netdev - Re: Network performance

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Date:	Mon, 29 Mar 2010 16:54:32 +0200
From:	Michal Simek <michal.simek@...alogix.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
CC:	LKML <linux-kernel@...r.kernel.org>,
	John Williams <john.williams@...alogix.com>,
	netdev@...r.kernel.org, Grant Likely <grant.likely@...retlab.ca>,
	John Linn <John.Linn@...inx.com>,
	"Steven J. Magnani" <steve@...idescorp.com>,
	Arnd Bergmann <arnd@...db.de>, akpm@...ux-foundation.org
Subject: Re: Network performance - iperf

Eric Dumazet wrote:
> Le lundi 29 mars 2010 à 13:33 +0200, Michal Simek a écrit :
> 
>> Do you have any idea howto improve TCP/UDP performance in general?
>> Or tests which can point me on weak places.
> 
> Could you post "netstat -s" on your receiver, after fresh boot and your
> iperf session, for 32 MB and 256 MB ram case ?
> 

I am not sure if is helpful but look below.

Thanks,
Michal

~ # ./netstat -s
Ip:
     0 total packets received
     0 forwarded
     0 incoming packets discarded
     0 incoming packets delivered
     0 requests sent out
Icmp:
     0 ICMP messages received
     0 input ICMP message failed.
     ICMP input histogram:
     0 ICMP messages sent
     0 ICMP messages failed
     ICMP output histogram:
Tcp:
     0 active connections openings
     0 passive connection openings
     0 failed connection attempts
     0 connection resets received
     0 connections established
     0 segments received
     0 segments send out
     0 segments retransmited
     0 bad segments received.
     0 resets sent
Udp:
     0 packets received
     0 packets to unknown port received.
     0 packet receive errors
     0 packets sent
     RcvbufErrors: 0
     SndbufErrors: 0
UdpLite:
     InDatagrams: 0
     NoPorts: 0
     InErrors: 0
     OutDatagrams: 0
     RcvbufErrors: 0
     SndbufErrors: 0
error parsing /proc/net/snmp: Success



-- 
Michal Simek, Ing. (M.Eng)
PetaLogix - Linux Solutions for a Reconfigurable World
w: www.petalogix.com p: +61-7-30090663,+42-0-721842854 f: +61-7-30090663
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