netdev - Re: forcedeth driver hangs under heavy load

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Message-ID: <4BC5D191.9030905@gmail.com>
Date:	Wed, 14 Apr 2010 15:30:41 +0100
From:	stephen mulcahy <smulcahy@...il.com>
To:	Ayaz Abdulla <aabdulla@...dia.com>
CC:	Eric Dumazet <eric.dumazet@...il.com>,
	David Miller <davem@...emloft.net>,
	"bhutchings@...arflare.com" <bhutchings@...arflare.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"ben@...adent.org.uk" <ben@...adent.org.uk>,
	"572201@...s.debian.org" <572201@...s.debian.org>
Subject: Re: forcedeth driver hangs under heavy load

Ayaz Abdulla wrote:
> Attached fix has been submitted to netdev.

I've run my reproducer with this patch applied to be Debian 2.6.32 
kernel and so far the problem with nodes becoming unresponsive hasn't 
occurred.

NIC settings were left the default so this looks positive

root@...e23:~# ethtool -k eth0
Offload parameters for eth0:
rx-checksumming: on
tx-checksumming: on
scatter-gather: on
tcp-segmentation-offload: on
udp-fragmentation-offload: off
generic-segmentation-offload: on
generic-receive-offload: off
large-receive-offload: off

Thanks!

-stephen
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