netdev - Re: Loopback performance from kernel 2.6.12 to 2.6.37

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Message-ID: <1289280152.2790.23.camel@edumazet-laptop>
Date:	Tue, 09 Nov 2010 06:22:32 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Andrew Hendry <andrew.hendry@...il.com>
Cc:	Jesper Dangaard Brouer <jdb@...x.dk>,
	netdev <netdev@...r.kernel.org>
Subject: Re: Loopback performance from kernel 2.6.12 to 2.6.37

Le mardi 09 novembre 2010 à 11:05 +1100, Andrew Hendry a écrit :
> results on an i7 860 @ 2.80Ghz machine, no virtualization involved. 2.6.37-rc1+
> 
> # time dd if=/dev/zero bs=1M count=10000 | netcat  127.0.0.1 9999
> 10000+0 records in
> 10000+0 records out
> 10485760000 bytes (10 GB) copied, 50.2022 s, 209 MB/s
> 
> real	0m50.210s
> user	0m1.094s
> sys	0m57.589s

Thanks !

Could you take a pef snapshot during the test ?

# perf record -a -g sleep 10
# perf report



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