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Message #155243
[Bug 1518457] Re: kswapd0 100% CPU usage
I can also confirm the issue on Amazon AWS t2.nano
Linux ip-172-31-5-83 4.2.0-22-generic #27-Ubuntu SMP Thu Dec 17 22:57:08 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
after DDing a 512Mb file:
top - 18:36:00 up 9 min, 1 user, load average: 1.03, 0.64, 0.30
Tasks: 74 total, 3 running, 71 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.5 us, 27.0 sy, 0.2 ni, 41.3 id, 9.8 wa, 0.0 hi, 0.0 si, 21.2 st
KiB Mem: 498852 total, 86092 used, 412760 free, 4852 buffers
KiB Swap: 0 total, 0 used, 0 free. 15444 cached Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
32 root 20 0 0 0 0 R 98.4 0.0 1:59.16 kswapd0
1 root 20 0 37432 2552 1044 S 0.0 0.5 0:02.77 systemd
2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd
3 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0
5 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/0:0H
6 root 20 0 0 0 0 S 0.0 0.0 0:00.02 kworker/u30:0
7 root 20 0 0 0 0 S 0.0 0.0 0:00.03 rcu_sched
8 root 20 0 0 0 0 S 0.0 0.0 0:00.00 rcu_bh
9 root 20 0 0 0 0 R 0.0 0.0 0:00.02 rcuos/0
10 root 20 0 0 0 0 S 0.0 0.0 0:00.00 rcuob/0
11 root rt 0 0 0 0 S 0.0 0.0 0:00.00 migration/0
12 root rt 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/0
13 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 khelper
14 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kdevtmpfs
15 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 netns
16 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 perf
17 root 20 0 0 0 0 S 0.0 0.0 0:00.01 xenwatch
root@ip-172-31-5-83:/home/ubuntu# ps -aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.4 0.5 37432 2552 ? Ss 18:26 0:02 /sbin/init
root 2 0.0 0.0 0 0 ? S 18:26 0:00 [kthreadd]
root 3 0.0 0.0 0 0 ? S 18:26 0:00 [ksoftirqd/0]
root 5 0.0 0.0 0 0 ? S< 18:26 0:00 [kworker/0:0H]
root 6 0.0 0.0 0 0 ? S 18:26 0:00 [kworker/u30:0]
root 7 0.0 0.0 0 0 ? S 18:26 0:00 [rcu_sched]
root 8 0.0 0.0 0 0 ? S 18:26 0:00 [rcu_bh]
root 9 0.0 0.0 0 0 ? S 18:26 0:00 [rcuos/0]
root 10 0.0 0.0 0 0 ? S 18:26 0:00 [rcuob/0]
root 11 0.0 0.0 0 0 ? S 18:26 0:00 [migration/0]
root 12 0.0 0.0 0 0 ? S 18:26 0:00 [watchdog/0]
root 13 0.0 0.0 0 0 ? S< 18:26 0:00 [khelper]
root 14 0.0 0.0 0 0 ? S 18:26 0:00 [kdevtmpfs]
root 15 0.0 0.0 0 0 ? S< 18:26 0:00 [netns]
root 16 0.0 0.0 0 0 ? S< 18:26 0:00 [perf]
root 17 0.0 0.0 0 0 ? S 18:26 0:00 [xenwatch]
root 18 0.0 0.0 0 0 ? S 18:26 0:00 [xenbus]
root 20 0.0 0.0 0 0 ? S 18:26 0:00 [khungtaskd]
root 21 0.0 0.0 0 0 ? S< 18:26 0:00 [writeback]
root 22 0.0 0.0 0 0 ? SN 18:26 0:00 [ksmd]
root 23 0.0 0.0 0 0 ? S< 18:26 0:00 [crypto]
root 24 0.0 0.0 0 0 ? S< 18:26 0:00 [kintegrityd]
root 25 0.0 0.0 0 0 ? S< 18:26 0:00 [bioset]
root 26 0.0 0.0 0 0 ? S< 18:26 0:00 [kblockd]
root 27 0.0 0.0 0 0 ? S< 18:26 0:00 [ata_sff]
root 28 0.0 0.0 0 0 ? S< 18:26 0:00 [md]
root 29 0.0 0.0 0 0 ? S< 18:26 0:00 [devfreq_wq]
root 30 0.0 0.0 0 0 ? S 18:26 0:00 [kworker/u30:1]
root 32 23.3 0.0 0 0 ? R 18:26 2:11 [kswapd0]
root 33 0.0 0.0 0 0 ? S 18:26 0:00 [fsnotify_mark]
root 34 0.0 0.0 0 0 ? S 18:26 0:00 [ecryptfs-kthrea]
root 45 0.0 0.0 0 0 ? S< 18:26 0:00 [kthrotld]
root 46 0.0 0.0 0 0 ? S< 18:26 0:00 [acpi_thermal_pm]
root 47 0.0 0.0 0 0 ? S 18:26 0:00 [scsi_eh_0]
root 48 0.0 0.0 0 0 ? S< 18:26 0:00 [scsi_tmf_0]
root 49 0.0 0.0 0 0 ? S 18:26 0:00 [scsi_eh_1]
root 50 0.0 0.0 0 0 ? S< 18:26 0:00 [scsi_tmf_1]
root 55 0.0 0.0 0 0 ? S< 18:26 0:00 [ipv6_addrconf]
root 74 0.0 0.0 0 0 ? S< 18:26 0:00 [deferwq]
root 75 0.0 0.0 0 0 ? S< 18:26 0:00 [charger_manager]
root 129 0.0 0.0 0 0 ? S< 18:26 0:00 [kpsmoused]
root 140 0.0 0.0 0 0 ? S 18:26 0:00 [kworker/0:2]
root 246 0.0 0.0 0 0 ? S 18:26 0:00 [jbd2/xvda1-8]
root 247 0.0 0.0 0 0 ? S< 18:26 0:00 [ext4-rsv-conver]
root 301 0.0 0.0 0 0 ? S 18:27 0:00 [kauditd]
root 311 0.0 0.8 39756 4248 ? Ss 18:27 0:00 /lib/systemd/systemd-journald
root 319 0.0 0.0 0 0 ? S 18:27 0:00 [kworker/0:10]
root 338 0.0 0.5 43284 2528 ? Ss 18:27 0:00 /lib/systemd/systemd-udevd
systemd+ 388 0.0 0.1 100300 636 ? Ssl 18:27 0:00 /lib/systemd/systemd-timesyncd
root 505 0.0 0.0 0 0 ? S< 18:27 0:00 [kworker/0:1H]
root 574 0.0 1.3 23460 6888 ? Ss 18:27 0:00 dhclient -1 -v -pf /run/dhclient.eth0.pid -lf /var/lib/dhcp/dhclient.eth0.leases eth0
message+ 653 0.0 0.1 42856 944 ? Ss 18:27 0:00 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation
root 668 0.0 0.1 28540 756 ? Ss 18:27 0:00 /lib/systemd/systemd-logind
root 669 0.0 0.1 33612 712 ? Ss 18:27 0:00 /sbin/cgmanager -m name=systemd
daemon 670 0.0 0.0 19180 420 ? Ss 18:27 0:00 /usr/sbin/atd -f
syslog 679 0.0 0.2 260604 1224 ? Ssl 18:27 0:00 /usr/sbin/rsyslogd -n
root 682 0.0 0.2 280228 1400 ? Ssl 18:27 0:00 /usr/lib/accountsservice/accounts-daemon
root 683 0.0 0.0 29848 232 ? Ss 18:27 0:00 /usr/bin/lxcfs /var/lib/lxcfs/
root 684 0.0 0.1 26052 716 ? Ss 18:27 0:00 /usr/sbin/cron -f
lxc-dns+ 809 0.0 0.1 45272 844 ? S 18:27 0:00 dnsmasq -u lxc-dnsmasq --strict-order --bind-interfaces --pid-file=/run/lxc/dnsmasq.pid --listen-address 10.0.3.
root 826 0.0 0.2 277036 1300 ? Ssl 18:27 0:00 /usr/lib/policykit-1/polkitd --no-debug
root 1018 0.0 0.2 69932 1236 ? Ss 18:28 0:00 /usr/sbin/sshd -D
root 1026 0.0 0.1 14576 532 tty1 Ss+ 18:28 0:00 /sbin/agetty --noclear tty1 linux
root 1027 0.0 0.0 12824 416 ttyS0 Ss+ 18:28 0:00 /sbin/agetty --keep-baud 115200 38400 9600 ttyS0 vt220
root 1119 0.0 0.2 99776 1452 ? Ss 18:28 0:00 sshd: ubuntu [priv]
ubuntu 1121 0.0 0.3 45168 1680 ? Ss 18:28 0:00 /lib/systemd/systemd --user
ubuntu 1122 0.0 0.3 58792 1604 ? S 18:28 0:00 (sd-pam)
ubuntu 1190 0.0 0.2 99776 1464 ? S 18:29 0:00 sshd: ubuntu@pts/0
ubuntu 1191 0.0 0.5 21356 2620 pts/0 Ss 18:29 0:00 -bash
root 1216 0.0 0.3 55524 1736 pts/0 S 18:30 0:00 sudo su
root 1217 0.0 0.2 48812 1240 pts/0 S 18:30 0:00 su
root 1218 0.0 0.5 19836 2632 pts/0 S 18:30 0:00 bash
root 1238 0.0 0.0 0 0 ? S 18:32 0:00 [kworker/u30:2]
root 1255 0.0 0.5 17200 2624 pts/0 R+ 18:36 0:00 ps -aux
root@ip-172-31-5-83:/home/ubuntu# dmesg
[ 0.000000] Initializing cgroup subsys cpuset
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Initializing cgroup subsys cpuacct
[ 0.000000] Linux version 4.2.0-22-generic (buildd@lcy01-22) (gcc version 5.2.1 20151010 (Ubuntu 5.2.1-22ubuntu2) ) #27-Ubuntu SMP Thu Dec 17 22:57:08 UTC 2015 (Ubuntu 4.2.0-22.27-generic 4.2.6)
[ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.2.0-22-generic root=UUID=8b439d74-d58f-493e-ae94-3074e2fcfe1d ro console=tty1 console=ttyS0 net.ifnames=0
[ 0.000000] KERNEL supported cpus:
[ 0.000000] Intel GenuineIntel
[ 0.000000] AMD AuthenticAMD
[ 0.000000] Centaur CentaurHauls
[ 0.000000] x86/fpu: xstate_offset[2]: 0240, xstate_sizes[2]: 0100
[ 0.000000] x86/fpu: Supporting XSAVE feature 0x01: 'x87 floating point registers'
[ 0.000000] x86/fpu: Supporting XSAVE feature 0x02: 'SSE registers'
[ 0.000000] x86/fpu: Supporting XSAVE feature 0x04: 'AVX registers'
[ 0.000000] x86/fpu: Enabled xstate features 0x7, context size is 0x340 bytes, using 'standard' format.
[ 0.000000] x86/fpu: Using 'eager' FPU context switches.
[ 0.000000] e820: BIOS-provided physical RAM map:
[ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009dfff] usable
[ 0.000000] BIOS-e820: [mem 0x000000000009e000-0x000000000009ffff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000000e0000-0x00000000000fffff] reserved
[ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x000000001fffffff] usable
[ 0.000000] BIOS-e820: [mem 0x00000000fc000000-0x00000000ffffffff] reserved
[ 0.000000] NX (Execute Disable) protection: active
[ 0.000000] SMBIOS 2.4 present.
[ 0.000000] DMI: Xen HVM domU, BIOS 4.2.amazon 12/07/2015
[ 0.000000] Hypervisor detected: Xen
[ 0.000000] Xen version 4.2.
[ 0.000000] Xen Platform PCI: I/O protocol version 1
[ 0.000000] Netfront and the Xen platform PCI driver have been compiled for this kernel: unplug emulated NICs.
[ 0.000000] Blkfront and the Xen platform PCI driver have been compiled for this kernel: unplug emulated disks.
You might have to change the root device
from /dev/hd[a-d] to /dev/xvd[a-d]
in your root= kernel command line option
[ 0.000000] HVMOP_pagetable_dying not supported
[ 0.000000] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved
[ 0.000000] e820: remove [mem 0x000a0000-0x000fffff] usable
[ 0.000000] e820: last_pfn = 0x20000 max_arch_pfn = 0x400000000
[ 0.000000] MTRR default type: write-back
[ 0.000000] MTRR fixed ranges enabled:
[ 0.000000] 00000-9FFFF write-back
[ 0.000000] A0000-BFFFF write-combining
[ 0.000000] C0000-FFFFF write-back
[ 0.000000] MTRR variable ranges enabled:
[ 0.000000] 0 base 0000F0000000 mask 3FFFF8000000 uncachable
[ 0.000000] 1 base 0000F8000000 mask 3FFFFC000000 uncachable
[ 0.000000] 2 disabled
[ 0.000000] 3 disabled
[ 0.000000] 4 disabled
[ 0.000000] 5 disabled
[ 0.000000] 6 disabled
[ 0.000000] 7 disabled
[ 0.000000] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WC UC- WT
[ 0.000000] found SMP MP-table at [mem 0x000fbba0-0x000fbbaf] mapped at [ffff8800000fbba0]
[ 0.000000] Scanning 1 areas for low memory corruption
[ 0.000000] Base memory trampoline at [ffff880000098000] 98000 size 24576
[ 0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff]
[ 0.000000] [mem 0x00000000-0x000fffff] page 4k
[ 0.000000] BRK [0x01ff1000, 0x01ff1fff] PGTABLE
[ 0.000000] BRK [0x01ff2000, 0x01ff2fff] PGTABLE
[ 0.000000] BRK [0x01ff3000, 0x01ff3fff] PGTABLE
[ 0.000000] init_memory_mapping: [mem 0x1fe00000-0x1fffffff]
[ 0.000000] [mem 0x1fe00000-0x1fffffff] page 2M
[ 0.000000] init_memory_mapping: [mem 0x00100000-0x1fdfffff]
[ 0.000000] [mem 0x00100000-0x001fffff] page 4k
[ 0.000000] [mem 0x00200000-0x1fdfffff] page 2M
[ 0.000000] RAMDISK: [mem 0x1f20e000-0x1f7adfff]
[ 0.000000] ACPI: Early table checksum verification disabled
[ 0.000000] ACPI: RSDP 0x00000000000EA020 000024 (v02 Xen )
[ 0.000000] ACPI: XSDT 0x00000000FC00F5A0 000054 (v01 Xen HVM 00000000 HVML 00000000)
[ 0.000000] ACPI: FACP 0x00000000FC00F260 0000F4 (v04 Xen HVM 00000000 HVML 00000000)
[ 0.000000] ACPI: DSDT 0x00000000FC0035E0 00BBF6 (v02 Xen HVM 00000000 INTL 20090123)
[ 0.000000] ACPI: FACS 0x00000000FC0035A0 000040
[ 0.000000] ACPI: FACS 0x00000000FC0035A0 000040
[ 0.000000] ACPI: APIC 0x00000000FC00F360 0000D8 (v02 Xen HVM 00000000 HVML 00000000)
[ 0.000000] ACPI: HPET 0x00000000FC00F4B0 000038 (v01 Xen HVM 00000000 HVML 00000000)
[ 0.000000] ACPI: WAET 0x00000000FC00F4F0 000028 (v01 Xen HVM 00000000 HVML 00000000)
[ 0.000000] ACPI: SSDT 0x00000000FC00F520 000031 (v02 Xen HVM 00000000 INTL 20090123)
[ 0.000000] ACPI: SSDT 0x00000000FC00F560 000031 (v02 Xen HVM 00000000 INTL 20090123)
[ 0.000000] ACPI: Local APIC address 0xfee00000
[ 0.000000] No NUMA configuration found
[ 0.000000] Faking a node at [mem 0x0000000000000000-0x000000001fffffff]
[ 0.000000] NODE_DATA(0) allocated [mem 0x1fffb000-0x1fffffff]
[ 0.000000] [ffffea0000000000-ffffea00007fffff] PMD -> [ffff88001ea00000-ffff88001f1fffff] on node 0
[ 0.000000] Zone ranges:
[ 0.000000] DMA [mem 0x0000000000001000-0x0000000000ffffff]
[ 0.000000] DMA32 [mem 0x0000000001000000-0x000000001fffffff]
[ 0.000000] Normal empty
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000000001000-0x000000000009dfff]
[ 0.000000] node 0: [mem 0x0000000000100000-0x000000001fffffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000000001000-0x000000001fffffff]
[ 0.000000] On node 0 totalpages: 130973
[ 0.000000] DMA zone: 64 pages used for memmap
[ 0.000000] DMA zone: 21 pages reserved
[ 0.000000] DMA zone: 3997 pages, LIFO batch:0
[ 0.000000] DMA32 zone: 1984 pages used for memmap
[ 0.000000] DMA32 zone: 126976 pages, LIFO batch:31
[ 0.000000] ACPI: PM-Timer IO Port: 0xb008
[ 0.000000] ACPI: Local APIC address 0xfee00000
[ 0.000000] IOAPIC[0]: apic_id 1, version 17, address 0xfec00000, GSI 0-47
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 low level)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 low level)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 low level)
[ 0.000000] ACPI: IRQ0 used by override.
[ 0.000000] ACPI: IRQ5 used by override.
[ 0.000000] ACPI: IRQ9 used by override.
[ 0.000000] ACPI: IRQ10 used by override.
[ 0.000000] ACPI: IRQ11 used by override.
[ 0.000000] Using ACPI (MADT) for SMP configuration information
[ 0.000000] ACPI: HPET id: 0x8086a201 base: 0xfed00000
[ 0.000000] smpboot: Allowing 15 CPUs, 14 hotplug CPUs
[ 0.000000] PM: Registered nosave memory: [mem 0x00000000-0x00000fff]
[ 0.000000] PM: Registered nosave memory: [mem 0x0009e000-0x0009ffff]
[ 0.000000] PM: Registered nosave memory: [mem 0x000a0000-0x000dffff]
[ 0.000000] PM: Registered nosave memory: [mem 0x000e0000-0x000fffff]
[ 0.000000] e820: [mem 0x20000000-0xfbffffff] available for PCI devices
[ 0.000000] Booting paravirtualized kernel on Xen HVM
[ 0.000000] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645519600211568 ns
[ 0.000000] setup_percpu: NR_CPUS:256 nr_cpumask_bits:256 nr_cpu_ids:15 nr_node_ids:1
[ 0.000000] PERCPU: Embedded 33 pages/cpu @ffff88001e600000 s96728 r8192 d30248 u262144
[ 0.000000] pcpu-alloc: s96728 r8192 d30248 u262144 alloc=1*2097152
[ 0.000000] pcpu-alloc: [0] 00 01 02 03 04 05 06 07 [0] 08 09 10 11 12 13 14 --
[ 0.000000] xen: PV spinlocks enabled
[ 0.000000] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes)
[ 0.000000] Built 1 zonelists in Node order, mobility grouping on. Total pages: 128904
[ 0.000000] Policy zone: DMA32
[ 0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.2.0-22-generic root=UUID=8b439d74-d58f-493e-ae94-3074e2fcfe1d ro console=tty1 console=ttyS0 net.ifnames=0
[ 0.000000] PID hash table entries: 2048 (order: 2, 16384 bytes)
[ 0.000000] Calgary: detecting Calgary via BIOS EBDA area
[ 0.000000] Calgary: Unable to locate Rio Grande table in EBDA - bailing!
[ 0.000000] Memory: 491268K/523892K available (8148K kernel code, 1237K rwdata, 3800K rodata, 1460K init, 1292K bss, 32624K reserved, 0K cma-reserved)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=15, Nodes=1
[ 0.000000] Hierarchical RCU implementation.
[ 0.000000] Build-time adjustment of leaf fanout to 64.
[ 0.000000] RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=15.
[ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=64, nr_cpu_ids=15
[ 0.000000] NR_IRQS:16640 nr_irqs:952 16
[ 0.000000] xen:events: Using 2-level ABI
[ 0.000000] xen:events: Xen HVM callback vector for event delivery is enabled
[ 0.000000] Offload RCU callbacks from all CPUs
[ 0.000000] Offload RCU callbacks from CPUs: 0-14.
[ 0.000000] Console: colour VGA+ 80x25
[ 0.000000] console [tty1] enabled
[ 0.000000] Cannot get hvm parameter CONSOLE_EVTCHN (18): -22!
[ 0.000000] console [ttyS0] enabled
[ 0.000000] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 30580167144 ns
[ 0.000000] hpet clockevent registered
[ 0.000000] tsc: Detected 2400.036 MHz processor
[ 0.008000] Calibrating delay loop (skipped), value calculated using timer frequency.. 4800.07 BogoMIPS (lpj=9600144)
[ 0.016004] pid_max: default: 32768 minimum: 301
[ 0.020014] ACPI: Core revision 20150619
[ 0.033954] ACPI: All ACPI Tables successfully acquired
[ 0.040029] Security Framework initialized
[ 0.044016] AppArmor: AppArmor initialized
[ 0.048002] Yama: becoming mindful.
[ 0.052065] Dentry cache hash table entries: 65536 (order: 7, 524288 bytes)
[ 0.060098] Inode-cache hash table entries: 32768 (order: 6, 262144 bytes)
[ 0.068046] Mount-cache hash table entries: 1024 (order: 1, 8192 bytes)
[ 0.072004] Mountpoint-cache hash table entries: 1024 (order: 1, 8192 bytes)
[ 0.080171] Initializing cgroup subsys blkio
[ 0.088005] Initializing cgroup subsys memory
[ 0.092011] Initializing cgroup subsys devices
[ 0.096003] Initializing cgroup subsys freezer
[ 0.100003] Initializing cgroup subsys net_cls
[ 0.104003] Initializing cgroup subsys perf_event
[ 0.112004] Initializing cgroup subsys net_prio
[ 0.116003] Initializing cgroup subsys hugetlb
[ 0.120056] CPU: Physical Processor ID: 0
[ 0.124743] mce: CPU supports 2 MCE banks
[ 0.128020] Last level iTLB entries: 4KB 1024, 2MB 1024, 4MB 1024
[ 0.136002] Last level dTLB entries: 4KB 1024, 2MB 1024, 4MB 1024, 1GB 4
[ 0.159504] ftrace: allocating 30910 entries in 121 pages
[ 0.188675] x2apic: IRQ remapping doesn't support X2APIC mode
[ 0.196003] Switched APIC routing to physical flat.
[ 0.202098] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=0 pin2=0
[ 0.249577] clocksource: xen: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns
[ 0.256007] Xen: using vcpuop timer interface
[ 0.256013] installing Xen timer for CPU 0
[ 0.260052] smpboot: CPU0: Intel(R) Xeon(R) CPU E5-2676 v3 @ 2.40GHz (fam: 06, model: 3f, stepping: 02)
[ 0.268027] cpu 0 spinlock event irq 53
[ 0.271942] Performance Events: unsupported p6 CPU model 63 no PMU driver, software events only.
[ 0.276737] x86: Booted up 1 node, 1 CPUs
[ 0.280007] smpboot: Total of 1 processors activated (4800.07 BogoMIPS)
[ 0.284010] NMI watchdog: disabled (cpu0): hardware events not enabled
[ 0.288003] NMI watchdog: Shutting down hard lockup detector on all cpus
[ 0.292349] devtmpfs: initialized
[ 0.297159] evm: security.selinux
[ 0.300005] evm: security.SMACK64
[ 0.303716] evm: security.SMACK64EXEC
[ 0.304005] evm: security.SMACK64TRANSMUTE
[ 0.308003] evm: security.SMACK64MMAP
[ 0.312003] evm: security.ima
[ 0.315722] evm: security.capability
[ 0.316141] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[ 0.320097] pinctrl core: initialized pinctrl subsystem
[ 0.324129] RTC time: 18:26:47, date: 01/10/16
[ 0.328133] NET: Registered protocol family 16
[ 0.332153] cpuidle: using governor ladder
[ 0.336014] cpuidle: using governor menu
[ 0.340075] ACPI: bus type PCI registered
[ 0.344005] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
[ 0.348389] PCI: Using configuration type 1 for base access
[ 0.353036] ACPI: Added _OSI(Module Device)
[ 0.356005] ACPI: Added _OSI(Processor Device)
[ 0.360003] ACPI: Added _OSI(3.0 _SCP Extensions)
[ 0.364006] ACPI: Added _OSI(Processor Aggregator Device)
[ 0.369023] xen: --> pirq=16 -> irq=9 (gsi=9)
[ 0.371647] ACPI: Interpreter enabled
[ 0.372008] ACPI Exception: AE_NOT_FOUND, While evaluating Sleep State [\_S1_] (20150619/hwxface-580)
[ 0.380004] ACPI Exception: AE_NOT_FOUND, While evaluating Sleep State [\_S2_] (20150619/hwxface-580)
[ 0.387055] ACPI: (supports S0 S3 S4 S5)
[ 0.388003] ACPI: Using IOAPIC for interrupt routing
[ 0.392031] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
[ 0.457209] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
[ 0.460013] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI]
[ 0.464014] acpi PNP0A03:00: _OSC failed (AE_NOT_FOUND); disabling ASPM
[ 0.468058] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended PCI configuration space under this bridge.
[ 0.472766] acpiphp: Slot [0] registered
[ 0.477601] acpiphp: Slot [3] registered
[ 0.480385] acpiphp: Slot [4] registered
[ 0.484388] acpiphp: Slot [5] registered
[ 0.488372] acpiphp: Slot [6] registered
[ 0.492412] acpiphp: Slot [7] registered
[ 0.496360] acpiphp: Slot [8] registered
[ 0.500496] acpiphp: Slot [9] registered
[ 0.504742] acpiphp: Slot [10] registered
[ 0.508376] acpiphp: Slot [11] registered
[ 0.512377] acpiphp: Slot [12] registered
[ 0.516580] acpiphp: Slot [13] registered
[ 0.520399] acpiphp: Slot [14] registered
[ 0.525385] acpiphp: Slot [15] registered
[ 0.528788] acpiphp: Slot [16] registered
[ 0.532401] acpiphp: Slot [17] registered
[ 0.536405] acpiphp: Slot [18] registered
[ 0.540406] acpiphp: Slot [19] registered
[ 0.544488] acpiphp: Slot [20] registered
[ 0.548519] acpiphp: Slot [21] registered
[ 0.552441] acpiphp: Slot [22] registered
[ 0.556506] acpiphp: Slot [23] registered
[ 0.560403] acpiphp: Slot [24] registered
[ 0.564398] acpiphp: Slot [25] registered
[ 0.568378] acpiphp: Slot [26] registered
[ 0.572522] acpiphp: Slot [27] registered
[ 0.576338] acpiphp: Slot [28] registered
[ 0.580363] acpiphp: Slot [29] registered
[ 0.584471] acpiphp: Slot [30] registered
[ 0.588676] acpiphp: Slot [31] registered
[ 0.592364] PCI host bridge to bus 0000:00
[ 0.596006] pci_bus 0000:00: root bus resource [bus 00-ff]
[ 0.600004] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window]
[ 0.604014] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff window]
[ 0.608008] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window]
[ 0.612007] pci_bus 0000:00: root bus resource [mem 0xf0000000-0xfbffffff window]
[ 0.616311] pci 0000:00:00.0: [8086:1237] type 00 class 0x060000
[ 0.618280] pci 0000:00:01.0: [8086:7000] type 00 class 0x060100
[ 0.621316] pci 0000:00:01.1: [8086:7010] type 00 class 0x010180
[ 0.624548] pci 0000:00:01.1: reg 0x20: [io 0xc100-0xc10f]
[ 0.625614] pci 0000:00:01.1: legacy IDE quirk: reg 0x10: [io 0x01f0-0x01f7]
[ 0.628008] pci 0000:00:01.1: legacy IDE quirk: reg 0x14: [io 0x03f6]
[ 0.632006] pci 0000:00:01.1: legacy IDE quirk: reg 0x18: [io 0x0170-0x0177]
[ 0.636007] pci 0000:00:01.1: legacy IDE quirk: reg 0x1c: [io 0x0376]
[ 0.641393] pci 0000:00:01.3: [8086:7113] type 00 class 0x068000
[ 0.641675] * Found PM-Timer Bug on the chipset. Due to workarounds for a bug,
* this clock source is slow. Consider trying other clock sources
[ 0.645558] pci 0000:00:01.3: quirk: [io 0xb000-0xb03f] claimed by PIIX4 ACPI
[ 0.649085] pci 0000:00:02.0: [1013:00b8] type 00 class 0x030000
[ 0.649592] pci 0000:00:02.0: reg 0x10: [mem 0xf0000000-0xf1ffffff pref]
[ 0.650014] pci 0000:00:02.0: reg 0x14: [mem 0xf3000000-0xf3000fff]
[ 0.652462] pci 0000:00:03.0: [5853:0001] type 00 class 0xff8000
[ 0.653341] pci 0000:00:03.0: reg 0x10: [io 0xc000-0xc0ff]
[ 0.653644] pci 0000:00:03.0: reg 0x14: [mem 0xf2000000-0xf2ffffff pref]
[ 0.658618] ACPI: PCI Interrupt Link [LNKA] (IRQs *5 10 11)
[ 0.664263] ACPI: PCI Interrupt Link [LNKB] (IRQs 5 *10 11)
[ 0.671933] ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11)
[ 0.676297] ACPI: PCI Interrupt Link [LNKD] (IRQs *5 10 11)
[ 0.705541] ACPI: Enabled 2 GPEs in block 00 to 0F
[ 0.708044] xen:balloon: Initialising balloon driver
[ 0.716025] xen_balloon: Initialising balloon driver
[ 0.720126] vgaarb: setting as boot device: PCI:0000:00:02.0
[ 0.724000] vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none
[ 0.724010] vgaarb: loaded
[ 0.727870] vgaarb: bridge control possible 0000:00:02.0
[ 0.728175] init_memory_mapping: [mem 0x20000000-0x27ffffff]
[ 0.732005] [mem 0x20000000-0x27ffffff] page 2M
[ 0.732884] [ffffea0000800000-ffffea00009fffff] PMD -> [ffff88001da00000-ffff88001dbfffff] on node 0
[ 0.732938] SCSI subsystem initialized
[ 0.736044] libata version 3.00 loaded.
[ 0.736066] ACPI: bus type USB registered
[ 0.740028] usbcore: registered new interface driver usbfs
[ 0.744011] usbcore: registered new interface driver hub
[ 0.748020] usbcore: registered new device driver usb
[ 0.752137] PCI: Using ACPI for IRQ routing
[ 0.756006] PCI: pci_cache_line_size set to 64 bytes
[ 0.756571] e820: reserve RAM buffer [mem 0x0009e000-0x0009ffff]
[ 0.756684] NetLabel: Initializing
[ 0.760004] NetLabel: domain hash size = 128
[ 0.764004] NetLabel: protocols = UNLABELED CIPSOv4
[ 0.768015] NetLabel: unlabeled traffic allowed by default
[ 0.772090] HPET: 3 timers in total, 0 timers will be used for per-cpu timer
[ 0.776017] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0
[ 0.782375] hpet0: 3 comparators, 64-bit 62.500000 MHz counter
[ 0.787073] clocksource: Switched to clocksource xen
[ 0.794102] AppArmor: AppArmor Filesystem Enabled
[ 0.798669] pnp: PnP ACPI init
[ 0.802157] system 00:00: [mem 0x00000000-0x0009ffff] could not be reserved
[ 0.810376] system 00:00: Plug and Play ACPI device, IDs PNP0c02 (active)
[ 0.810457] system 00:01: [io 0x08a0-0x08a3] has been reserved
[ 0.816516] system 00:01: [io 0x0cc0-0x0ccf] has been reserved
[ 0.822414] system 00:01: [io 0x04d0-0x04d1] has been reserved
[ 0.828243] system 00:01: Plug and Play ACPI device, IDs PNP0c02 (active)
[ 0.828268] xen: --> pirq=17 -> irq=8 (gsi=8)
[ 0.828288] pnp 00:02: Plug and Play ACPI device, IDs PNP0b00 (active)
[ 0.828307] xen: --> pirq=18 -> irq=12 (gsi=12)
[ 0.828321] pnp 00:03: Plug and Play ACPI device, IDs PNP0f13 (active)
[ 0.828335] xen: --> pirq=19 -> irq=1 (gsi=1)
[ 0.828347] pnp 00:04: Plug and Play ACPI device, IDs PNP0303 PNP030b (active)
[ 0.828360] xen: --> pirq=20 -> irq=6 (gsi=6)
[ 0.828362] pnp 00:05: [dma 2]
[ 0.828374] pnp 00:05: Plug and Play ACPI device, IDs PNP0700 (active)
[ 0.828393] xen: --> pirq=21 -> irq=4 (gsi=4)
[ 0.828406] pnp 00:06: Plug and Play ACPI device, IDs PNP0501 (active)
[ 0.828439] system 00:07: [io 0x10c0-0x1141] has been reserved
[ 0.835889] system 00:07: [io 0xb044-0xb047] has been reserved
[ 0.841914] system 00:07: Plug and Play ACPI device, IDs PNP0c02 (active)
[ 0.865915] pnp: PnP ACPI: found 8 devices
[ 0.875866] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns
[ 0.884236] pci_bus 0000:00: resource 4 [io 0x0000-0x0cf7 window]
[ 0.884238] pci_bus 0000:00: resource 5 [io 0x0d00-0xffff window]
[ 0.884240] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff window]
[ 0.884241] pci_bus 0000:00: resource 7 [mem 0xf0000000-0xfbffffff window]
[ 0.884277] NET: Registered protocol family 2
[ 0.889317] TCP established hash table entries: 4096 (order: 3, 32768 bytes)
[ 0.896188] TCP bind hash table entries: 4096 (order: 4, 65536 bytes)
[ 0.902456] TCP: Hash tables configured (established 4096 bind 4096)
[ 0.909178] UDP hash table entries: 256 (order: 1, 8192 bytes)
[ 0.915583] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
[ 0.923462] NET: Registered protocol family 1
[ 0.927634] pci 0000:00:00.0: Limiting direct PCI/PCI transfers
[ 0.933727] pci 0000:00:01.0: PIIX3: Enabling Passive Release
[ 0.938804] pci 0000:00:01.0: Activating ISA DMA hang workarounds
[ 0.944771] pci 0000:00:02.0: Video device with shadowed ROM
[ 0.944836] PCI: CLS 0 bytes, default 64
[ 0.944904] Trying to unpack rootfs image as initramfs...
[ 1.918341] Freeing initrd memory: 5760K (ffff88001f20e000 - ffff88001f7ae000)
[ 1.925681] RAPL PMU detected, API unit is 2^-32 Joules, 3 fixed counters 655360 ms ovfl timer
[ 1.933270] hw unit of domain pp0-core 2^-14 Joules
[ 1.938299] hw unit of domain package 2^-14 Joules
[ 1.943812] hw unit of domain dram 2^-16 Joules
[ 1.949483] microcode: CPU0 sig=0x306f2, pf=0x1, revision=0x25
[ 1.956101] microcode: Microcode Update Driver: v2.00 <tigran@xxxxxxxxxxxxxxxxxxxx>, Peter Oruba
[ 1.964170] Scanning for low memory corruption every 60 seconds
[ 1.971284] futex hash table entries: 4096 (order: 6, 262144 bytes)
[ 1.979020] Initialise system trusted keyring
[ 1.983900] audit: initializing netlink subsys (disabled)
[ 1.989124] audit: type=2000 audit(1452450409.469:1): initialized
[ 1.994901] HugeTLB registered 2 MB page size, pre-allocated 0 pages
[ 2.003740] zpool: loaded
[ 2.007969] zbud: loaded
[ 2.011418] VFS: Disk quotas dquot_6.6.0
[ 2.015678] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[ 2.022292] fuse init (API version 7.23)
[ 2.026324] Key type big_key registered
[ 2.030737] Key type asymmetric registered
[ 2.035244] Asymmetric key parser 'x509' registered
[ 2.041175] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 249)
[ 2.049578] io scheduler noop registered
[ 2.053605] io scheduler deadline registered (default)
[ 2.058109] io scheduler cfq registered
[ 2.062249] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[ 2.067820] pciehp: PCI Express Hot Plug Controller Driver version: 0.4
[ 2.075405] intel_idle: does not run on family 6 model 63
[ 2.075484] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0
[ 2.083291] ACPI: Power Button [PWRF]
[ 2.088137] input: Sleep Button as /devices/LNXSYSTM:00/LNXSLPBN:00/input/input1
[ 2.095109] ACPI: Sleep Button [SLPF]
[ 2.099913] GHES: HEST is not enabled!
[ 2.105670] xen: --> pirq=22 -> irq=28 (gsi=28)
[ 2.105779] xen:grant_table: Grant tables using version 1 layout
[ 2.113210] Grant table initialized
[ 2.117138] Cannot get hvm parameter CONSOLE_EVTCHN (18): -22!
[ 2.122866] Serial: 8250/16550 driver, 32 ports, IRQ sharing enabled
[ 2.161452] 00:06: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
[ 2.171661] Linux agpgart interface v0.103
[ 2.178792] brd: module loaded
[ 2.184392] loop: module loaded
[ 2.194347] ata_piix 0000:00:01.1: version 2.13
[ 2.195341] scsi host0: ata_piix
[ 2.200409] scsi host1: ata_piix
[ 2.205156] ata1: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0xc100 irq 14
[ 2.212055] ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xc108 irq 15
[ 2.228305] libphy: Fixed MDIO Bus: probed
[ 2.234120] tun: Universal TUN/TAP device driver, 1.6
[ 2.239155] tun: (C) 1999-2004 Max Krasnyansky <maxk@xxxxxxxxxxxx>
[ 2.244948] PPP generic driver version 2.4.2
[ 2.249616] xen_netfront: Initialising Xen virtual ethernet driver
[ 2.279258] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 2.285826] ehci-pci: EHCI PCI platform driver
[ 2.290630] ehci-platform: EHCI generic platform driver
[ 2.296769] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 2.305654] ohci-pci: OHCI PCI platform driver
[ 2.310341] ohci-platform: OHCI generic platform driver
[ 2.315400] uhci_hcd: USB Universal Host Controller Interface driver
[ 2.321193] i8042: PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13:PS2M] at 0x60,0x64 irq 1,12
[ 2.332441] serio: i8042 KBD port at 0x60,0x64 irq 1
[ 2.338263] serio: i8042 AUX port at 0x60,0x64 irq 12
[ 2.343693] mousedev: PS/2 mouse device common for all mice
[ 2.350541] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input2
[ 2.360099] rtc_cmos 00:02: rtc core: registered rtc_cmos as rtc0
[ 2.366321] rtc_cmos 00:02: alarms up to one day, 114 bytes nvram, hpet irqs
[ 2.373527] i2c /dev entries driver
[ 2.377623] device-mapper: uevent: version 1.0.3
[ 2.383453] device-mapper: ioctl: 4.33.0-ioctl (2015-8-18) initialised: dm-devel@xxxxxxxxxx
[ 2.394007] ledtrig-cpu: registered to indicate activity on CPUs
[ 2.399950] PCCT header not found.
[ 2.404187] NET: Registered protocol family 10
[ 2.409646] NET: Registered protocol family 17
[ 2.414944] Key type dns_resolver registered
[ 2.420927] Loading compiled-in X.509 certificates
[ 2.426812] Loaded X.509 cert 'Build time autogenerated kernel key: 5ba1353109d27849ddd6fbd554a5534438beafab'
[ 2.436748] registered taskstats version 1
[ 2.455938] zswap: loading zswap
[ 2.459802] zswap: using zbud pool
[ 2.463625] zswap: using lzo compressor
[ 2.468765] blkfront: xvda: barrier or flush: disabled; persistent grants: disabled; indirect descriptors: enabled;
[ 2.479167] Key type trusted registered
[ 2.487682] Key type encrypted registered
[ 2.492567] AppArmor: AppArmor sha1 policy hashing enabled
[ 2.498339] ima: No TPM chip found, activating TPM-bypass!
[ 2.503734] evm: HMAC attrs: 0x1
[ 2.507168] xvda: xvda1
[ 2.608104] xenbus_probe_frontend: Device with no driver: device/vfb/0
[ 2.614787] Magic number: 0:5:443
[ 2.618877] rtc_cmos 00:02: setting system clock to 2016-01-10 18:26:50 UTC (1452450410)
[ 2.627603] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
[ 2.636395] EDD information not available.
[ 2.643987] PM: Hibernation image not present or could not be loaded.
[ 2.645549] Freeing unused kernel memory: 1460K (ffffffff81d37000 - ffffffff81ea4000)
[ 2.654532] Write protecting the kernel read-only data: 12288k
[ 2.660287] Freeing unused kernel memory: 32K (ffff8800017f8000 - ffff880001800000)
[ 2.668468] Freeing unused kernel memory: 296K (ffff880001bb6000 - ffff880001c00000)
[ 2.690364] random: udevadm urandom read with 22 bits of entropy available
[ 2.762779] FDC 0 is a S82078B
[ 2.831487] AVX2 version of gcm_enc/dec engaged.
[ 2.836578] AES CTR mode by8 optimization enabled
[ 2.924089] tsc: Refined TSC clocksource calibration: 2399.998 MHz
[ 2.932178] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x229835b7123, max_idle_ns: 440795242976 ns
[ 3.838651] input: ImExPS/2 Generic Explorer Mouse as /devices/platform/i8042/serio1/input/input4
[ 9.588528] EXT4-fs (xvda1): mounted filesystem with ordered data mode. Opts: (null)
[ 11.187675] random: nonblocking pool is initialized
[ 14.609918] systemd[1]: Failed to insert module 'kdbus': Function not implemented
[ 15.242105] systemd[1]: systemd 225 running in system mode. (+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ -LZ4 +SECCOMP +BLKID -ELFUTILS +KMOD -IDN)
[ 15.259046] systemd[1]: Detected virtualization xen.
[ 15.262406] systemd[1]: Detected architecture x86-64.
[ 15.270552] systemd[1]: Set hostname to <ubuntu>.
[ 15.378663] systemd[1]: Initializing machine ID from random generator.
[ 15.382289] systemd[1]: Installed transient /etc/machine-id file.
[ 18.620994] systemd[1]: sshd-keygen.service: Cannot add dependency job, ignoring: Unit sshd-keygen.service failed to load: No such file or directory.
[ 18.629655] systemd[1]: display-manager.service: Cannot add dependency job, ignoring: Unit display-manager.service failed to load: No such file or directory.
[ 18.638849] systemd[1]: Set up automount Arbitrary Executable File Formats File System Automount Point.
[ 18.649419] systemd[1]: Started Forward Password Requests to Wall Directory Watch.
[ 18.660465] systemd[1]: Reached target Encrypted Volumes.
[ 18.667202] systemd[1]: Reached target Swap.
[ 18.672851] systemd[1]: Reached target Remote File Systems (Pre).
[ 18.681031] systemd[1]: Created slice Root Slice.
[ 18.687904] systemd[1]: Listening on udev Kernel Socket.
[ 18.694810] systemd[1]: Listening on Journal Audit Socket.
[ 18.702067] systemd[1]: Listening on /dev/initctl Compatibility Named Pipe.
[ 18.713335] systemd[1]: Listening on Journal Socket (/dev/log).
[ 18.722692] systemd[1]: Created slice User and Session Slice.
[ 18.729575] systemd[1]: Listening on Journal Socket.
[ 18.737302] systemd[1]: Listening on udev Control Socket.
[ 18.744259] systemd[1]: Reached target User and Group Name Lookups.
[ 18.752401] systemd[1]: Created slice System Slice.
[ 18.759971] systemd[1]: Starting Setup Virtual Console...
[ 18.769014] systemd[1]: Mounting Debug File System...
[ 18.777601] systemd[1]: Created slice system-getty.slice.
[ 18.784968] systemd[1]: Starting Create list of required static device nodes for the current kernel...
[ 18.796732] systemd[1]: Starting Increase datagram queue length...
[ 18.807772] systemd[1]: Starting Load Kernel Modules...
[ 18.815365] systemd[1]: Mounting POSIX Message Queue File System...
[ 18.823655] systemd[1]: Created slice system-serial\x2dgetty.slice.
[ 18.856984] systemd[1]: Starting Uncomplicated firewall...
[ 18.864735] systemd[1]: Starting Remount Root and Kernel File Systems...
[ 18.873785] systemd[1]: Reached target Slices.
[ 18.881302] systemd[1]: Mounting Huge Pages File System...
[ 18.889300] systemd[1]: Starting udev Coldplug all Devices...
[ 18.898284] systemd[1]: Started Setup Virtual Console.
[ 18.944194] systemd[1]: Mounted POSIX Message Queue File System.
[ 18.952215] systemd[1]: Mounted Debug File System.
[ 18.955529] systemd[1]: Mounted Huge Pages File System.
[ 18.967368] systemd[1]: Started Increase datagram queue length.
[ 18.976241] systemd[1]: Listening on Syslog Socket.
[ 18.982396] systemd[1]: Starting Journal Service...
[ 19.044175] EXT4-fs (xvda1): re-mounted. Opts: (null)
[ 19.048701] systemd[1]: Started Create list of required static device nodes for the current kernel.
[ 19.059577] systemd[1]: Started Load Kernel Modules.
[ 19.072792] systemd[1]: Started Uncomplicated firewall.
[ 19.081762] systemd[1]: Started Remount Root and Kernel File Systems.
[ 19.097361] systemd[1]: Starting Load/Save Random Seed...
[ 19.111568] systemd[1]: Starting Ensure /etc/mtab is a symlink to /proc/mounts...
[ 19.129279] systemd[1]: Starting Apply Kernel Variables...
[ 19.140824] systemd[1]: Mounting FUSE Control File System...
[ 19.146253] systemd[1]: Starting Create Static Device Nodes in /dev...
[ 19.156875] systemd[1]: Mounted FUSE Control File System.
[ 19.170785] systemd[1]: Started udev Coldplug all Devices.
[ 19.233069] systemd[1]: Started Load/Save Random Seed.
[ 19.354467] systemd[1]: Started Ensure /etc/mtab is a symlink to /proc/mounts.
[ 19.367148] systemd[1]: Started Apply Kernel Variables.
[ 19.985039] systemd[1]: Started Journal Service.
[ 20.178207] systemd-journald[311]: Received request to flush runtime journal from PID 1
[ 21.996298] ifquery[398]: segfault at 1 ip 0000000000403187 sp 00007ffe89165ae0 error 4 in ifup[400000+d000]
[ 22.307144] Built 1 zonelists in Node order, mobility grouping on. Total pages: 123648
[ 22.307147] Policy zone: DMA32
[ 22.307577] Built 1 zonelists in Node order, mobility grouping on. Total pages: 123648
[ 22.307578] Policy zone: Normal
[ 22.581164] ppdev: user-space parallel port driver
[ 22.698923] Console: switching to colour frame buffer device 100x37
[ 23.563917] audit: type=1400 audit(1452450431.440:2): apparmor="STATUS" operation="profile_load" profile="unconfined" name="lxc-container-default" pid=495 comm="apparmor_parser"
[ 23.564250] audit: type=1400 audit(1452450431.444:3): apparmor="STATUS" operation="profile_load" profile="unconfined" name="lxc-container-default-with-mounting" pid=495 comm="apparmor_parser"
[ 23.564489] audit: type=1400 audit(1452450431.444:4): apparmor="STATUS" operation="profile_load" profile="unconfined" name="lxc-container-default-with-nesting" pid=495 comm="apparmor_parser"
[ 23.704146] audit: type=1400 audit(1452450431.584:5): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/sbin/dhclient" pid=509 comm="apparmor_parser"
[ 23.704437] audit: type=1400 audit(1452450431.584:6): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=509 comm="apparmor_parser"
[ 23.704661] audit: type=1400 audit(1452450431.584:7): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/NetworkManager/nm-dhcp-helper" pid=509 comm="apparmor_parser"
[ 23.704877] audit: type=1400 audit(1452450431.584:8): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/lib/connman/scripts/dhclient-script" pid=509 comm="apparmor_parser"
[ 23.712485] audit: type=1400 audit(1452450431.592:9): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/bin/lxc-start" pid=510 comm="apparmor_parser"
[ 23.786342] audit: type=1400 audit(1452450431.664:10): apparmor="STATUS" operation="profile_load" profile="unconfined" name="/usr/sbin/tcpdump" pid=512 comm="apparmor_parser"
[ 27.796134] xenbus_probe_frontend: Waiting for devices to initialise: 25s...20s...15s...10s...5s...0s...
[ 52.708683] xenbus_probe_frontend: Timeout connecting to device: device/vfb/0 (local state 3, remote state 1)
[ 54.163590] cgroup: new mount options do not match the existing superblock, will be ignored
[ 54.562406] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 54.683257] bridge: automatic filtering via arp/ip/ip6tables has been deprecated. Update your scripts to load br_netfilter if you need this.
[ 55.182401] nf_conntrack version 0.5.0 (3897 buckets, 15588 max)
[ 57.811546] audit: type=1400 audit(1452450465.685:11): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/bin/lxc-start" pid=828 comm="apparmor_parser"
[ 57.815158] audit: type=1400 audit(1452450465.689:12): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="lxc-container-default" pid=832 comm="apparmor_parser"
[ 57.815165] audit: type=1400 audit(1452450465.689:13): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="lxc-container-default-with-mounting" pid=832 comm="apparmor_parser"
[ 57.815169] audit: type=1400 audit(1452450465.689:14): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="lxc-container-default-with-nesting" pid=832 comm="apparmor_parser"
[ 73.966169] EXT4-fs (xvda1): resizing filesystem from 2094474 to 3930147 blocks
[ 76.050816] EXT4-fs (xvda1): resized filesystem to 3930147
root@ip-172-31-5-83:/home/ubuntu# cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=15.10
DISTRIB_CODENAME=wily
DISTRIB_DESCRIPTION="Ubuntu 15.10"
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https://bugs.launchpad.net/bugs/1518457
Title:
kswapd0 100% CPU usage
Status in linux package in Ubuntu:
In Progress
Bug description:
As per bug 721896 and various others:
I'm on an AWS t2.micro instance (Xeon E5-2670, 991MiB of memory).
Occasionally (about once a day), kswapd0 falls into a busy loop and
spins on 100% CPU usage indefinitely. This can be provoked by
copying/writing large files (e.g. dding a 256MB file), but it happens
occasionally otherwise. System memory usage (not including
buffers/caches) currently sits at 36%, which is typical[1]. Initially
I had no swap space configured; I've since tried enabling a 256MB swap
file, but the problem continues to occur and no swap space is used.
The system can be recovered with `echo 1 > /proc/sys/vm/drop_caches`.
Happy to provide further information/take further debugging actions.
[1] Full output from `free`:
total used free shared buffers cached
Mem: 1014936 483448 531488 28556 9756 112700
-/+ buffers/cache: 360992 653944
Swap: 262140 0 262140
ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: linux-image-4.2.0-18-generic 4.2.0-18.22
ProcVersionSignature: Ubuntu 4.2.0-18.22-generic 4.2.3
Uname: Linux 4.2.0-18-generic x86_64
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Nov 19 19:40 seq
crw-rw---- 1 root audio 116, 33 Nov 19 19:40 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CRDA: N/A
Date: Fri Nov 20 20:44:30 2015
Ec2AMI: ami-1c552a76
Ec2AMIManifest: (unknown)
Ec2AvailabilityZone: us-east-1d
Ec2InstanceType: t2.micro
Ec2Kernel: unavailable
Ec2Ramdisk: unavailable
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99
MachineType: Xen HVM domU
PciMultimedia:
ProcEnviron:
TERM=screen
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 xen
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-18-generic root=UUID=35bc01f4-4602-4823-976e-508edef899df ro console=tty1 console=ttyS0 net.ifnames=0
RelatedPackageVersions:
linux-restricted-modules-4.2.0-18-generic N/A
linux-backports-modules-4.2.0-18-generic N/A
linux-firmware N/A
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/06/2015
dmi.bios.vendor: Xen
dmi.bios.version: 4.2.amazon
dmi.chassis.type: 1
dmi.chassis.vendor: Xen
dmi.modalias: dmi:bvnXen:bvr4.2.amazon:bd05/06/2015:svnXen:pnHVMdomU:pvr4.2.amazon:cvnXen:ct1:cvr:
dmi.product.name: HVM domU
dmi.product.version: 4.2.amazon
dmi.sys.vendor: Xen
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References
