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Date: Thu, 18 May 2006 12:14:45 +1200
From: Mark Kirkwood <markir@paradise.net.nz>
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Subject: Re: Sequantial IO Performance improvement in 6.1-STABLE
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Mark Kirkwood wrote:
> I recently upgraded my FreeBSD machines from 6.0R to 6.1-STABLE
> 
> I noticed a pleasant surprise - improved disk IO!
> 
> In 6.0R best sequential throughput I ever saw was 170 MB/s (32k block 
> size reads on an 4G file). In 6.1-STABLE I'm seeing 190 Mb/s (32k block 
> size reads on an 4G file).
> 

Would have been even better if I'd spelled "sequential" correctly in the 
subject :-(...

I'm also seeing sequential write speed increasing from 120Mb/s to 140Mb/s.

I did wonder if this increased IO throughput is what is triggering the 
posts about data corruption in 6.1 - i.e. more throughput means more 
heat to dissipate!

Cheers

Mark