Sequantial IO Performance improvement in 6.1-STABLE

Mark Kirkwood markir at
Wed May 17 17:14:52 PDT 2006

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!



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