During calender weeks 6,7,8 and 9 this problem did not occur anymore.
Strange enough...
** Changed in: linux (Ubuntu)
Status: Confirmed = Invalid
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Now we have:
- worker1: Trusty with Trusty kernel, no swapping
- worker2: Utopic with Kernel 3.13.11-031311ckt14-generic, swapping
- worker3: Utopic with Kernel 3.18.2-031802-generic, swapping
So we still encounter the swapping problem with Utopic installations no matter,
which kernel is
Downgraded kernel on one machine with Utopic to kernel from
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.13.11-ckt14-trusty/
The machine with Trusty installed runs now for 6 days without swapping and same
load as all other machines.
Rebooted the second machine with Utopic to have an
Would it be possible for you to test the latest 3.13 upstream stable kernel?
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.13.11-ckt14-trusty/
This will tell us if the fix in mainline already made it's way into
stable updates.
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Ping. Do you have any hints where to look for the cause of this very
different caching behaviour of the latest mainline kernel?
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trusty + mainline kernel works like a charm, worker 2 and 3 are swapping
again...
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Title:
memory leak with unknown reason after
So it must be some setting within the system that affects this behavior.
Any hints from the Ubuntu guys what we should look for?
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worker 01 now has trusty with a 3.19.0 mainline kernel:
root@cx1000-01:~# cat /etc/issue
Ubuntu 14.04.1 LTS \n \l
root@cx1000-01:~# uname -a
Linux cx1000-01 3.19.0-031900rc4-generic #201501112135 SMP Sun Jan 11 21:36:48
UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
root@cx1000-01:~#
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short summery:
worker01: trusty, unmodified = no problems
worker02: utopic, patched perl = massive swap use
worker03: utopic, mainline kernel (3.18.2-031802-generic #201501082011) =
massive swap use
what should we do next? boot the utopic or mainline kernel on trusty?
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worker 01 has been reinstalled with trusty
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Title:
memory leak with unknown reason after upgrade to utopic
Status in linux package
So booting the Trusty kernel on a Utopic install does not fix the issue?
That may indicate a Userspace issue. In the bug description, you say:
Since the upgrade from trusty to utopic at October 27. Would you be
able to re-install Trusty on a machine and confirm that it does not
exhibit the bug?
the bug also occurs with the upstream kernel
** Tags added: kernel-bug-exists-upstream
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Title:
memory leak with unknown reason
the upgraded bios didn't helped, system just starts to swap again
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Title:
memory leak with unknown reason after upgrade to utopic
Does this issue go away if you boot back into the trusty kernel?
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Title:
memory leak with unknown reason after upgrade to utopic
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.18 kernel[0].
If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.
If the mainline kernel does not fix
the trusty kernel didn't helped at all.
worker 03 has been updated to mainline kernel:
root@cx1000-03:~# uname -a
Linux cx1000-03 3.18.0-031800-generic #201412071935 SMP Mon Dec 8 00:36:34 UTC
2014 x86_64 x86_64 x86_64 GNU/Linux
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bios of worker 03 has been updated to 6.00.1.13:
[0.00] DMI: FUJITSU PRIMERGY CX122 S1
/D2899, BIOS 6.00 Rev. 1.13.2899.A1 01/19/2012
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** Changed in: linux (Ubuntu)
Importance: Undecided = Medium
** Tags added: kernel-da-key
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Title:
memory leak with unknown
** Tags added: bios-outdated-6.00.1.13
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Title:
memory leak with unknown reason after upgrade to utopic
Status in linux package in
** Attachment added: munin cpu
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1401817/+attachment/4279329/+files/cpu.png
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sorry, typo: ...so please DON'T hesitate to ask for any information or
help.
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Title:
memory leak with unknown reason after upgrade
** Attachment added: munin processes
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1401817/+attachment/4279330/+files/processes.png
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Hi,
Could you run 'top' then type 'M' to see which processes are using the most
memory?
--chris
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Title:
memory leak with unknown
I can reproduce this very easily. Just download a 30G file with wget.
The kernel fills up your memory until the machine starts swapping. Most
consuming memory area is the cache memory.
$ free
Gesamt Belegt Frei Gemeinsam Puffer Cached
Speicher: 16374340 15801164 573176
Hmm, sorry. Downloaded file is stored in an XFS filesystem on a rotating
disc partition. So there needs to be something wrong in the block cache
implementation in the kernel causing memory usage to be higher that
available memory. And consuming more memory for block caches than
currently is
here is the top output:
top - 17:56:06 up 1 day, 8:48, 1 user, load average: 0.00, 2.67, 14.10
Tasks: 269 total, 1 running, 268 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.0 us, 0.0 sy, 0.0 ni,100.0 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem: 49452964 total, 45681296 used, 3771668
and another one with corresponding ps aux:
top - 18:04:02 up 1 day, 8:56, 1 user, load average: 0.04, 0.80, 8.61
Tasks: 269 total, 1 running, 268 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.0 us, 0.0 sy, 0.0 ni,100.0 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem: 49452964 total,
top after some hours of idle:
top - 22:37:02 up 1 day, 13:29, 1 user, load average: 0.00, 0.01, 0.05
Tasks: 268 total, 3 running, 265 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.6 us, 0.3 sy, 0.0 ni, 98.7 id, 0.4 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem: 49452964 total, 45896468 used,
root@cx1000-02:~# free
total used free sharedbuffers cached
Mem: 49452964 20993700 284592649296160 19588 19612676
-/+ buffers/cache:1361436 48091528
Swap: 50320380 15316644 35003736
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top after stopping the buildservice:
top - 22:37:55 up 1 day, 13:30, 1 user, load average: 0.00, 0.01, 0.05
Tasks: 245 total, 2 running, 243 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.0 us, 0.0 sy, 0.0 ni,100.0 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem: 49452964 total, 45567572
top after unmounting the big ramdisk:
top - 22:39:08 up 1 day, 13:31, 1 user, load average: 0.05, 0.03, 0.05
Tasks: 245 total, 1 running, 244 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.0 us, 0.0 sy, 0.0 ni,100.0 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem: 49452964 total, 20996188
top directly after reboot (of another, identical system):
top - 22:51:44 up 2 min, 1 user, load average: 0.53, 0.72, 0.32
Tasks: 258 total, 1 running, 257 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.1 us, 0.0 sy, 0.0 ni, 99.9 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem: 49453024
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