From: Benjamin LaHaise <ben.lahaise@neterion.com>
To: netdev@vger.kernel.org
Subject: lots of cpu time spent in skb_copy_bits() in net-next with small mtu
Date: Fri, 12 Jun 2009 12:13:20 -0400 [thread overview]
Message-ID: <20090612161320.GB4290@neterion.com> (raw)
Hi folks,
Just a heads up: something in net-next is resulting in lots of cpu time
being spent in skb_copy_bits() (called from tcp_collapse()) when an ethernet
interface mtu is lowered to 576 on the source and dest machines running
netperf. This behaviour does not appear in 2.6.29. I'll try to bisect
it this weekend.
-ben
next reply other threads:[~2009-06-12 16:16 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-12 16:13 Benjamin LaHaise [this message]
2009-06-12 19:57 ` lots of cpu time spent in skb_copy_bits() in net-next with small mtu Ilpo Järvinen
2009-06-16 19:20 ` John Dykstra
2009-06-17 5:46 ` Ilpo Järvinen
2009-06-17 5:53 ` David Miller
2009-06-17 6:57 ` Ilpo Järvinen
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