touch-packages team mailing list archive

[Seth Arnold <1458014@xxxxxxxxxxxxxxxxxx>]

It's highly unlikely that the audit_printk_skb() function is itself
slowing down your boot; it is designed to operate with extremely low
overhead, and the ratelimiting that is in effect here means that the
slowest portion of the function, actually writing characters to the
system log, is skipped entirely.

Probably what is actually slow is recompiling AppArmor policies; this is
an extremely computational heavy task that has been subject to extensive
optimization. We're planning further caching efforts in the future to
reduce the number of times that the policies must be recomputed. Chances
are quite good a second reboot, immediately after this one, would run
faster, since the profiles would probably not need to be rebuilt
immediately.

Thanks

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Touch seeded packages, which is subscribed to apparmor in Ubuntu.
https://bugs.launchpad.net/bugs/1458014

Title:
  audit_printk_skb slowing down boot

Status in apparmor package in Ubuntu:
  New

Bug description:
  Subjectively, my system slowed down after the recent GRUB update.

  As you can see from the following, audit_printk_skb is consuming a lot
  of boot time:

  [   13.243280] vboxdrv: Successfully loaded version 4.3.10_Ubuntu (interface 0x001a0007).
  [   13.257947] vboxpci: IOMMU not found (not registered)
  [   13.862999] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
  [   13.865996] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
  [   14.195776] r8169 0000:04:00.0 eth0: link down
  [   14.195796] r8169 0000:04:00.0 eth0: link down
  [   14.195827] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
  [   14.196138] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
  [   15.769090] r8169 0000:04:00.0 eth0: link up
  [   15.769097] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
  [   16.223084] init: plymouth-upstart-bridge main process ended, respawning
  [   42.424836] audit_printk_skb: 195 callbacks suppressed
  [   42.424839] type=1400 audit(1431891089.974:77): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/lib/cups/backend/cups-pdf" pid=2632 comm="apparmor_parser"
  [   42.424844] type=1400 audit(1431891089.974:78): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/cupsd" pid=2632 comm="apparmor_parser"
  [   42.425185] type=1400 audit(1431891089.974:79): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/cupsd" pid=2632 comm="apparmor_parser"
  (END)

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: apparmor 2.8.95~2430-0ubuntu5.1
  ProcVersionSignature: Ubuntu 3.13.0-53.88-generic 3.13.11-ckt19
  Uname: Linux 3.13.0-53-generic i686
  ApportVersion: 2.14.1-0ubuntu3.10
  Architecture: i386
  CurrentDesktop: Unity
  Date: Fri May 22 14:18:46 2015
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2014-04-29 (388 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140417)
  ProcKernelCmdline: BOOT_IMAGE=/boot/vmlinuz-3.13.0-53-generic root=UUID=8cf458ab-4ff9-4505-9a16-27da1ea7ec10 ro quiet splash vt.handoff=7
  SourcePackage: apparmor
  Syslog:
   
  UpgradeStatus: No upgrade log present (probably fresh install)

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