Re: File System Performance results

Steven Pratt
Wed, 29 Oct 2008 21:49:04 -0000

Steven Pratt wrote:
> Chris Mason wrote:
>> On Wed, 2008-10-22 at 15:06 -0500, Steven Pratt wrote:
>>
>>> We have set up a new page which is intended mainly for tracking the
>>> performance of BTRFS, but in doing so we are testing other
>>> filesystems as well (ext3, ext4, xfs and jfs).  Thought some people
>>> here might find the results useful.
>>>
>>
>> I think I understand the bad read performance in btrfs.  I was forcing
a
>> tiny max readahead size.
>>
>> The current git tree has fixes for it, along with a ton of new code.
>>
> Ok, we''ll kick off some new runs.
>
> Also, just need to push out the data fro odirect random write and mail
> server with fsync.
> Steve
We have completed testing on the random write tests with odirect.
Results can be found at:
Single disk:
http://btrfs.boxacle.net/repository/single-disk/Oct28-odirect-random-writes/Oct28-odirect-random-writes.html
Raid:
http://btrfs.boxacle.net/repository/raid/Oct28-odirect-random-writes/Oct28-odirect-random-writes.html

Also, the changes to the mail server emulation to use fsync on the
creates is also complete:
Single disk:
http://btrfs.boxacle.net/repository/single-disk/Oct28-mail-server-fsync-creates/Oct28-mail-server-fsync-creates.html
Raid:
http://btrfs.boxacle.net/repository/raid/Oct28-mail-server-fsync-creates/mail-server-fsync-creates.html

Steve

>
>> -chris
>>
>>
>
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