Re: workaround large MTU and N-order allocation failures

[Nick Piggin]

On Sun, 2005-09-18 at 17:35 +0300, Dan Aloni wrote:
> Hello,
> 
> Is there currently a workaround available for handling large MTU 
> (larger than 1 page, even 2-order) in the Linux network stack?
> 
> The problem with large MTU is external memory fragmentation in
> the buddy system following high workload, causing alloc_skb() to 
> fail.
> 
> I'm interested in patches for both 2.4 and 2.6 kernels.
> 

Yes there is currently a workaround. That is to keep increasing
/proc/sys/vm/min_free_kbytes until your allocation failures stop.

Nick

-- 
SUSE Labs, Novell Inc.



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