Yes, it did continue to help. I'd suggest it be included for future
stable updates.
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https://bugs.launchpad.net/bugs/1327360
Title:
xfs_btree_cur leak
Status in “linux”
I ran this kernel on a relatively busy server over the past 5 days and
it looks like the second version of your patched kernel has closed the
memory leak and resolved the bug.
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The patched did not seem to help.
$ uname -rv
3.2.0-65-generic #98~lp1327360v1 SMP Fri Jun 13 21:24:49 UTC 2014
$ uptime
18:02:53 up 19:30, 1 user, load average: 1.62, 1.71, 1.68
$ sudo grep xfs_btree_cur /proc/slabinfo
xfs_btree_cur 161382 161382208 392 : tunables00
Thanks! We'd appreciate some time, as we have largely dealt with the
issue by upgrading to the 3.8.0 backport kernel, and I'm going on
vacation next week. I'll see if one of my colleagues can get back to
you.
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Public bug reported:
There appears to be a kernel memory leak of xfs_btree_cur in recent
Precise kernels (3.2.0-45 and -63 are affected, for sure). The slab
can grow unbounded; we've seen it grow larger than 32GB via slabtop.
The affected hosts have XFS mounted on / (root filesystem).
We have
$ uname -a
Linux REDACTED 3.2.0-45-generic #70-Ubuntu SMP Wed May 29 20:12:06 UTC 2013
x86_64 x86_64 x86_64 GNU/Linux
$ sudo grep xfs_btree_cur /proc/slabinfo
xfs_btree_cur 26695461 26695461208 392 : tunables000
: slabdata 684499 684499 0
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$ uname -a
Linux
See http://www.redhat.com/archives/dm-devel/2012-July/msg00015.html for
a confirmation of this issue on mainline 3.5rc4 (since fixed).
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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