Re: New experimental btrfs branch ready for testing

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On Sat, Jun 06, 2009 at 11:38:45AM -0500, Steven Pratt wrote:
>
> No problem.  Raid results are uploading to  
> http://btrfs.boxacle.net/repository/raid/history/History.html  now.   
> There were massive improvements in the random write workloads,  
> especially with cow enabled!!  MailServer had moderate perf gains, but  
> dramatic decrease in CPU utilization, so this is very good as well.
>
> The only regression I see is on large file creates, CPU is up 200% or  
> more while performance is fairly flat.  btrfs_tree_lock now dominates  
> the profile.

I'm not able to reproduce the btrfs_tree_lock usage that you're seeing.
Could you please use the callgraph option to oprofile?

-chris

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