netdev - Re: pktgen: tricks

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Message-ID: <4ABB4AD9.50002@gmail.com>
Date:	Thu, 24 Sep 2009 12:32:57 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Denys Fedoryschenko <denys@...p.net.lb>
CC:	Stephen Hemminger <shemminger@...tta.com>,
	Jesper Dangaard Brouer <jdb@...x.dk>,
	Robert Olsson <robert@...julf.net>, netdev@...r.kernel.org
Subject: Re: pktgen: tricks

Denys Fedoryschenko a écrit :
> On Thursday 24 September 2009 03:41:41 Stephen Hemminger wrote:
>> Other kernel config help:
>>   - turn off lock dependency checker, kmecheck, page alloc debug
>>     basically anything that slows stuff down
>>   - turn off content group scheduler
> Maybe, but i'm not sure (i can't test it):
> Disable randomize VA space? On embedded boards it was helping. 
> In some case disabling SMP helped, when various SMP locks involved, but maybe 
> not for pktgen.
> 
>

pktgen is a kernel module, and is not affected by randomize VA space.

But of course, disabling SMP must help, as long as your machine needs
one cpu only :)

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