Re: [Bug 12832] New: kernel leaks a lot of memory

[Andrew Morton <akpm@linux-foundation.org>]

(switched to email.  Please respond via emailed reply-to-all, not via the
bugzilla web interface).

On Sat,  7 Mar 2009 11:27:12 -0800 (PST) bugme-daemon@bugzilla.kernel.org wrote:

> http://bugzilla.kernel.org/show_bug.cgi?id=12832
> 
>            Summary: kernel leaks a lot of memory
>            Product: Memory Management
>            Version: 2.5
>      KernelVersion: 2.6.27
>           Platform: All
>         OS/Version: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: high
>           Priority: P1
>          Component: Other
>         AssignedTo: akpm@osdl.org
>         ReportedBy: drzeus-bugzilla@drzeus.cx
> 
> 
> Latest working kernel version: 2.6.26
> Earliest failing kernel version: 2.6.27
> Distribution: Fedora
> Hardware Environment: x86_64
> Software Environment: Fedora 9 & 10
> Problem Description:
> 
> Starting from 2.6.27, the kernel eats up a whole lot more of memory (hundreds
> of MB) at no gain.
> 
> I've compared what I can from 2.6.26 and so far haven't found where this
> missing memory has disappeared.
> 
> Original bug in RH's bugzilla:
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=481448
> 

hm, not a lot to go on there.

We have quite a lot of instrumentation for memory consumption - were
you able to work out where it went by comparing /proc/meminfo,
/proc/slabinfo, `echo m > /proc/sysrq-trigger', etc?

Is the memory missing on initial boot up, or does it take some time for
the problem to become evident?

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>