This bug was fixed in the package linux - 2.6.32-35.78
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linux (2.6.32-35.78) lucid-proposed; urgency=low
[Herton R. Krzesinski]
* Release Tracking Bug
- LP: #871899
[ Andrew Dickinson ]
* SAUCE: sched: Prevent divide by zero when cpu_power is 0
- LP: #614853
[
** Branch linked: lp:ubuntu/lucid-proposed/linux-mvl-dove
** Branch linked: lp:ubuntu/maverick-proposed/linux-mvl-dove
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Title:
igb kernel module
** Branch linked: lp:ubuntu/lucid-proposed/linux-ec2
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https://bugs.launchpad.net/bugs/829566
Title:
igb kernel module reporting fix
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Used nload and dstat to verify the stats are correct. This patch seems
good.
Linux ubuntu.localhost 2.6.32-35-server #78-Ubuntu SMP Tue Oct 11
16:26:12 UTC 2011 x86_64 GNU/Linux
** Tags removed: verification-needed-lucid
** Tags added: verification-done-lucid
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@joe: no, 2.6.32-34.77 doesn't include it.
But the kernel 2.6.32-35.78 in -proposed includes it, and is awaiting
verification that it solves the problem. Please test the kernel and
update this bug with the results. If the problem is solved, change the
tag 'verification-needed-lucid' to 'verificati
Just to verify, does 2.6.32-34.77 include this change?
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Title:
igb kernel module reporting fix
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@tim has a new kernel been released yet with this patch?
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Title:
igb kernel module reporting fix
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ht
Joe - The next version will be 2.6.32-34.78 (or higher) which will have
this patch. This bug report will get spammed with a reminder to test
when its promoted to -proposed.
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What version of the 10.04 kernel are we likely to see this in?
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Title:
igb kernel module reporting fix
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** Changed in: linux (Ubuntu Lucid)
Status: In Progress => Fix Committed
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Title:
igb kernel module reporting fix
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Joe - I was looking at the current upstream driver when I decided irq
save/restore was not required. It looks to me like the stats gathered
are produced by hardware and are not under CPU control. And in fact, the
original intent of the lock portion of the patch was to prevent
collision between simu
tim - i was saving/restoring irqs because the rx/tx queue stats could be
modified when a tx/rx completes (for example, check the end of
igb_clean_tx_irq). the individual queue stats are totaled up in
igb_update_stats so updating the stats in igb_clean_tx_irq could be
problematic...
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Joe - spin_lock_irqsave/spin_lock_irqrestore is not necessary. How about
this patch? I think its SRU'able.
** Patch added: "UBUNTU: SAUCE: igb: Protect stats update (v1)"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/829566/+attachment/2433172/+files/0001-UBUNTU-SAUCE-igb-Protect-stats-
hi tim:
how about this patch?
** Patch added: "igb-fix.patch"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/829566/+attachment/2432363/+files/igb-fix.patch
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Joe - it all depends on the possibility for regression. Did you have a
patch mind?
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Title:
igb kernel module reporting fix
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Would you be willing to SRU a patch that simply fixes the stats
collecting for the igb driver rather than the above patch that updates
the interface as well?
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Joe - the patches required to fix this are way too intrusive for an SRU.
Your best bet is to use one of the LTS backported kernels, e.g., linux-
image-server-lts-backport-natty.
** Changed in: linux (Ubuntu)
Status: Confirmed => Won't Fix
** Changed in: linux (Ubuntu)
Assignee: (unass
@Andy
The basic issue is that we have software that monitors our servers using
these stats and due to how they are tracked in the igb driver in 10.04
we miss our network statistics every other second. Obviously this is
suboptimal, especially considering it seems that most other drivers
don't have
This is a kernel bug (with fix :)) so shoving over to linux package.
** Package changed: linux-meta (Ubuntu) => linux (Ubuntu)
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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@Joe
Is it possible for you attach a debdiff of all the changes that would be
required?
Also, changes to a stable release must pass all the requirements for a
stable release update[1].
[1] https://wiki.ubuntu.com/StableReleaseUpdates
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It looks like the interface changed a bit too so this commit is also
needed.
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=28172739f0a276eb8d6ca917b3974c2edb036da3
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