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SubjectRe: Memory leak in 2.6.11-rc1?
On Sun, Jan 23, 2005 at 08:03:15PM +0000, Russell King wrote:
> I think I may be seeing something odd here, maybe a possible memory leak.
> The only problem I have is wondering whether I'm actually comparing like
> with like. Maybe some networking people can provide a hint?
>
> Below is gathered from 2.6.11-rc1.
>
> bash-2.05a# head -n2 /proc/slabinfo
> slabinfo - version: 2.1
> # name <active_objs> <num_objs> <objsize> <objperslab> <pagesperslab>
> bash-2.05a# cat /proc/net/rt_cache | wc -l; grep ip_dst /proc/slabinfo
> 115
> ip_dst_cache 759 885 256 15 1
> bash-2.05a# cat /proc/net/rt_cache | wc -l; grep ip_dst /proc/slabinfo
> 117
> ip_dst_cache 770 885 256 15 1
> bash-2.05a# cat /proc/net/rt_cache | wc -l; grep ip_dst /proc/slabinfo
> 133
> ip_dst_cache 775 885 256 15 1
> bash-2.05a# cat /proc/net/rt_cache | wc -l; grep ip_dst /proc/slabinfo
> 18
> ip_dst_cache 664 885 256 15 1
>...
> bash-2.05a# cat /proc/net/rt_cache | wc -l; grep ip_dst /proc/slabinfo
> 24
> ip_dst_cache 675 885 256 15 1
> bash-2.05a# cat /proc/net/rt_cache | wc -l; grep ip_dst /proc/slabinfo
> 24
> ip_dst_cache 669 885 256 15 1
>
> I'm fairly positive when I rebooted the machine a couple of days ago,
> ip_dst_cache was significantly smaller for the same number of lines in
> /proc/net/rt_cache.

FYI, today it looks like this:

bash-2.05a# cat /proc/net/rt_cache | wc -l; grep ip_dst /proc/slabinfo
26
ip_dst_cache 820 1065 256 15 1

So the dst cache seems to have grown by 151 in 16 hours... I'll continue
monitoring and providing updates.

--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of: 2.6 PCMCIA - http://pcmcia.arm.linux.org.uk/
2.6 Serial core
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