[Users] Maybe Kernel Memory Leak, Not Sure

Aleksandar Ivanisevic aleksandar at ivanisevic.de
Fri Sep 12 03:47:06 PDT 2014


FWIW, I have experienced similar issue, but since I'm also running zfs
which is still pretty experimental, I've blamed it on zfs. Unfortunately
I had to reboot quickly without much time to investigate.

What I usually do is look at the slabs (cat /proc/slabinfo or use
slabtop) and any hugepages (fgrep HugePages /proc/meminfo) that
might be just sitting there. Unfortunately I didn't find the way to link
slabs to the parts of the kernel that are alocating them, except when it
isn't obvious from the name.

Of course, it could be that the running processes have leaks or "leaks",
I assume that you already used top and similar tools to figure out
where the memory is going.

regards,

"JR Richardson" <jmr.richardson at gmail.com>
writes:

> Hi All,
>
>  
>
> I€™ve been using OpenVZ for many years, was on a fairly old kernel for a
> long time, VE€™s running great no issues. I recently upgraded to kernel
> 2.6.32-openvz-042stab090.4-amd64, same VE€™s, after 75 days in production
> the memory on the host node is maxed and I€™m seeing issues in the VE€™s
> with MySQL database dips, slow responses and such.
>
>  
>
> Any known issues with memory leaks with the newer kernels, should I try
> upgrading to linux-source-2.6.32-openvz-042stab093.4-amd64 or downgrade to
> another older version?
>
>  
>
> Opinions very welcome.
>
>  
>
> Thanks.
>
>  
>
> JR
>
> JR Richardson
>
> Engineering for the Masses
>
>  
>
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-- 
Ti si arogantan, prepotentan i peglaš vlastitu frustraciju. -- Ivan
Tišljar, hr.comp.os.linux



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