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[peterzay <peterzay1@xxxxxxxxx>]

I will look into bootcharts as soon as possible.

I was expecting more info from the log of step #6.

You will recall that rate limiting gave the following kind of output:

[   17.062400] init: plymouth-upstart-bridge main process ended, respawning
[   42.218430] audit_printk_skb: 177 callbacks suppressed

When /etc/sysctl.d/99-printk_ratelimiting.conf with
kernel.printk_ratelimit=0 was implemented, I expected detail on those
callbacks.

Instead, I got:

[   17.530175] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   19.396738] init: plymouth-upstart-bridge main process ended, respawning
[   44.236269] type=1400 audit(1437703237.706:71): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/lib/cups/backend/cups-pdf" pid=2413 comm="apparmor_parser"

What happened between 19 secs and 44 secs?  Remember, this is a fast 4
core machine.

I would appreciate your thoughts on that?

Then we can look at bootcharts.

Thanks.


** Changed in: apparmor (Ubuntu)
       Status: Incomplete => New

-- 
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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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