Re: Bug#678958: CPU hog on machine with many routes

forwarded 678958 [email protected]
thanks

Hello Damyan,
thanks for the report: I'm forwarding it upstream.

Dear Gkrellm upstream authors,
a fellow Debian Developer has reported this issue which I hereby
forward to your attention.

Regards,
Sandro

On Mon, Jun 25, 2012 at 1:06 PM, Damyan Ivanov <[email protected]> wrote:
> Package: gkrellmd
> Version: 2.3.4-1
> Severity: normal
> Tags: upstream
>
> Hi,
>
> Using gkrellmd on machine with many routes (e.g. a router) is impractical.
>
> gkrellmd reads /proc/net/route in order to determine which interfaces are up,
> but this file may contain hundreds of thousands of lines, making parsing quite
> CPU-consuming.
>
> Even after lowering update-hz to 1, gkrellmd still uses about 40% CPU all the
> time and the machine load stays at 0.7.
>
> I guess it would be better if gkrellmd could use some other source of
> intormation for discovering active/inactive interfaces. 'ip link' utility seems
> to use the linux netlink socket for example.
>
> Another solution would be to add an option which disables the /proc/net/route
> scan or makes it very rare (silimar to inet-interval).
>
>
> Thanks for considering,
>     dam
>
> -- System Information:
> Debian Release: wheezy/sid
>   APT prefers unstable
>   APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental')
> Architecture: amd64 (x86_64)
>
> Kernel: Linux 3.2.0-2-amd64 (SMP w/4 CPU cores)
> Locale: LANG=bg_BG.UTF-8, LC_CTYPE=bg_BG.UTF-8 (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/dash
>
>



-- 
Sandro Tosi (aka morph, morpheus, matrixhasu)
My website: http://matrixhasu.altervista.org/
Me at Debian: http://wiki.debian.org/SandroTosi

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