Re: Severe trashing in 2.4.4

From: Frank de Lange (
Date: Sun Apr 29 2001 - 17:14:53 EST

On Mon, Apr 30, 2001 at 12:06:52AM +0200, Manfred Spraul wrote:
> You could enable STATS in mm/slab.c, then the number of alloc and free
> calls would be printed in /proc/slabinfo.
> > Yeah, those as well. I kinda guessed they were related...
> Could you check /proc/sys/net/core/hot_list_length and skb_head_pool
> (not available in /proc, use gdb --core /proc/kcore)? I doubt that this
> causes your problems, but the skb_head code uses a special per-cpu
> linked list for even faster allocations.
> Which network card do you use? Perhaps a bug in the zero-copy code of
> the driver?

I'll give it a go once I reboot into 2.4.4 again (now in 2.4.3 to get some
'work' done). Using the dreaded ne2k cards (two of them), which have caused me
more than one headache already...

I'll have a look at the driver for these cards.


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