Re: AS performance with reiser4 on 2.6.3

["Dr. Giovanni A. Orlando" <gorlando@futuretg.com>]

Dear Mark,

    I appreciate the OSDL efforts and graphs you offer for ReiserFS 4, 
but I will
    appreciate a lot more if you adopt a distro that adopt ReiserFS 
like: SuSE, Lindows or our FTOSX.

    For us ReiserFS is important for RedHat really don't.

    So, I don't want to see again the RedHat 9, name here:
       http://developer.osdl.org/markw/fs/dbt2_stp_results.html

Thanks very much,
Giovanni

> Nikita Danilov wrote:
>
>> markw@osdl.org writes:
>> > Hi Nick,
>> > > I started getting some results with dbt-2 on 2.6.3 and saw that 
>> reiser4
>> > is doing a bit worse with the AS elevator.  Although reiser4 wasn't
>> > doing well to begin with, compared to the other filesystems.  I have
>> > links to the STP results on our 4-ways and 8-ways here:
>> >     http://developer.osdl.org/markw/fs/dbt2_stp_results.html
>>
>> There were no changes between 2.6.2 and 2.6.3 that could affect reiser4
>> performance, so it is not clear why numbers are so different. Probably
>> results should be averaged over several runs.
>>
> The differences don't "feel" like testing error, and in any event 
> something is seriously wrong.  That something is either poor fsync 
> performance, or poor scalability.  In any event, please investigate, 
> and please try such things as using capture on copy.  Mark, does this 
> benchmark like to use fsync?
>
> Thanks much mark for bringing this to our attention.
>
>> Also can you run test with
>>
>> http://www.namesys.com/snapshots/2004.02.25/extra/e_05-proc-sleep.patch
>>
>> applied? To use it turn CONFIG_PROC_SLEEP on (depends on
>> CONFIG_FRAME_POINTER), and do "cat /proc/sleep" before and after test
>> run.
>>
>> > > -- > Mark Wong - - markw@osdl.org
>>
>> Nikita.
>> -
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>
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