>>>>> Dave Kleikamp (DK) writes:

 DK> On Tue, 2006-11-07 at 11:47 -0800, Andrew Morton wrote:
 >> Why is ext3 slow??

 DK> Allocation?  I don't see anything indicating that Bill is overwriting an
 DK> existing file, so there is block allocation and journaling overhead.  If
 DK> that's the case, it would be interesting to see how fast ext3 is when
 DK> overwriting a file.  Extents and delayed allocation should improve on
 DK> this a lot.  

this was my first suspiction as well. though in my testing on opteron
write achieved ~300MB/s consuming 100% cpu. so it would be interesting
to see vmstat output and actual cpu consumption.

thanks, Alex
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