Re: 2.6.32 swapper allocation failure with plenty of memoryavailable

[Benjamin Herrenschmidt]

On Tue, 2010-08-10 at 08:05 +0200, Mikael Abrahamsson wrote:
> Hi.
> 
> Yesterday my Ubuntu 10.04 machine with their 2.6.32 (amd64) kernel, under 
> a lot of disk IO and network stress stopped responding. I thought it had 
> frozen completely, but ~2 hours later it came back to life.
> 
> When I logged in I saw a lot of "swapper allocation failure" and r8169 
> timeouts in dmesg (first time I've seen this cause network instability 
> like this, but it's also the first motherboard I've tested with that has a 
> r8169 NIC).
 .../...

I noticed that on a completely different setup as well... 2.6.32 tend to
have a hard time servicing the skb allocations for demanding network
drivers.

Probably some threshold in the VM that might want tuning...

Cheers,
Ben.


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/