linux-kernel - howto boost write(2) performance?

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Date:	Tue, 09 Oct 2007 15:50:17 +0200
From:	Michael Stiller <ms@...ale.net>
To:	linux-kernel@...r.kernel.org
Subject: howto boost write(2) performance?

Hi list,

i'm developing an application (in C) which needs to write about 
1Gbit/s (125Mb/s) to a disk array attached via U320 SCSI. 
It runs on Dual Core 2 Xeons @2Ghz utilizing kernel 2.6.22.7. 

I buffer the data in (currently 4) 400Mb buffers and use write(2) in a
dedicated thread to write them to the raw disk (no fs). 

The write(2) performance is not good enough, the writer threads take to
much time, and i ask you for ideas, howto to boost the write
performance. 

Maybe mmaping the disk would work? 

Cheers,

-Michael

PS. I would like to be cc'd as i usually don't read the list due to high
traffic.

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