[DRBD-user] Kernel Memory Leak

Philipp Reisner philipp.reisner at linbit.com
Mon Oct 17 11:17:52 CEST 2005

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

Am Donnerstag, 13. Oktober 2005 19:25 schrieb Blake Atkins:
> Hello list,
> 	I am experiencing a memory leak with SuSE SLES9 x86_64 kernel
> 2.6.5-7.193-smp and a self-compiled DRBD 0.7.11.  Slabtop shows "size-256"
> growing at a rate of about 50MB an hour:
> 4200585 4200585 100%    0.25K 280039       15   1120156K size-256
> After a few days of this, the server runs out of RAM and requires a reboot.
> The problem only occurs on whichever node is currently primary and
> continues to occur regardless of the state of the primary.  I have not been
> able to determine what is filling "size-256" and I think that would require
> a new kernel with some expiremental slab debugging patches.  I searched the
> DRBD lists for memory leaks and all I discovered was the "bio" problem
> which appears to have been solved in version 0.7.10.  I would also expect
> slabtop to show one of the bio pools as consuming the RAM instead of
> "size-256" if I was experiencing the bio leak.  I am also not certain that
> DRBD is causing the leak but this problem does not occur on similar
> hardware / software configurations that do not use DRBD.  Has anyone
> experienced anything similar?  Is it possible to rule out DRBD as the cause
> of the memory leak?

Sounds very unlikely to me that this might be related to DRBD. 


: Dipl-Ing Philipp Reisner                      Tel +43-1-8178292-50 :
: LINBIT Information Technologies GmbH          Fax +43-1-8178292-82 :
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