memory leak in autofs-4.1.3-114 on FC3/i386?

memory leak in autofs-4.1.3-114 on FC3/i386?

[Axel Thimm]

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Hi,

an updated FC3/i386 box with mail server functionality accesses
O(1000) accounts over NFS (NFS server is a dated Tru64 Unixcluster).

The automount process consumes memory until we have to kill it, or the
machine starts oom-killing us. Here is a graph:

	http://www.physik.fu-berlin.de/~dreger/memusage.png

(We have also seen bad behaviour of rpc.idmapd in the past, and 200MB
looks a bit too much for mapping 1000 accounts)

As a side note: Even though there are only 1000 accounts on this
system, mounts are attempted on each forged incoming address,
e.g. there is a multitude of failing mount requests, perhaps that's
causing the large rpc.idmapd process space and automount's memory
consumption?

Anything else we can provide for debugging? Thanks.
-- 
Axel.Thimm at ATrpms.net

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Re: memory leak in autofs-4.1.3-114 on FC3/i386?

[Ian Kent]

On Fri, 29 Apr 2005, Axel Thimm wrote:

> Hi,
> 
> an updated FC3/i386 box with mail server functionality accesses
> O(1000) accounts over NFS (NFS server is a dated Tru64 Unixcluster).
> 
> The automount process consumes memory until we have to kill it, or the
> machine starts oom-killing us. Here is a graph:
> 
> 	http://www.physik.fu-berlin.de/~dreger/memusage.png
> 
> (We have also seen bad behaviour of rpc.idmapd in the past, and 200MB
> looks a bit too much for mapping 1000 accounts)
> 
> As a side note: Even though there are only 1000 accounts on this
> system, mounts are attempted on each forged incoming address,
> e.g. there is a multitude of failing mount requests, perhaps that's
> causing the large rpc.idmapd process space and automount's memory
> consumption?

I'm not sure I understand what's going on here.
Can you provide a debug log please.

> 
> Anything else we can provide for debugging? Thanks.

Jeff Moyer has a 4.1.4 rpm on his people page. Can you give that a try 
please.

Ian