Re: BTRFS Performance page

[Steven Pratt <slpratt@austin.ibm.com>]

Steven Pratt wrote:
> As discussed on the BTRFS conference call, myself and Kevin Corry have 
> set up some test machines for the purpose of doing performance testing 
> on BTRFS.  The intent is to have a semi permanent setup that we can 
> use to test new features and code drops in BTRFS as well as to do 
> comparisons to other file systems.  The systems are pretty much fully 
> automated for execution, so we should be able to crank out large 
> numbers of different benchmarks as well as keep up with GIT changes.
>
> The data is hosted at http://btrfs.boxacle.net/. So far we have the 
> data for the single disk tests uploaded. We should be able to upload 
> results from the larger RAID config tomorrow.
>
> Initial tests were done with the FFSB benchmark and we picked 5 common 
> workloads; create, random and sequential read, random write, and a 
> mail server emulation.  We plan to expand this based on feedback to 
> include more FFSB tests and/or other workloads.
>
> All runs have complete analysis data with them (iostat, mpstat, 
> oprofile, sar), as well as the FFSB profiles that can be used to 
> recreate any test we ran. We also have collected blktrace data but not 
> uploaded due to size.
>
> Please follow the results link on the bottom of the main page to get 
> to the current results.  Let me know what you like or don't like.   I 
> will post again when we get the RAID data uploaded.
RAID data is now uploaded.  The config used is 136 15k rpm fiber disks 
in 8 arrays all striped together with DM.  These results are not as 
favorable to BTRFS, as there seem to be some major issues with random 
write and mail server workloads.

http://btrfs.boxacle.net/repository/raid/Initial-compare/Initial-Compare-RAID0.html

Steve

>
>
> Steve
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