Comment 277 for bug 131094

Im using bfsbfq kernel. Its just a little better than the generic kernel.

2010/3/25 Paulo J. S. Silva <email address hidden>:
> Actually, there is this PPA:
>
> https://launchpad.net/~darxus/+archive/bfsbfq
>
> That have the BFS scheduler and BFQ I/O scheduler which may also play
> an interesting role here.  I have not tried it yet but I should try it
> soon.
>
> best,
>
> Paulo
>
>
> On Thu, Mar 25, 2010 at 8:50 AM, Jeff Epstein <email address hidden> wrote:
>> I believe that this problem can be alleviated by using Con Kolivas's BFS
>> scheduler instead of the stock scheduler. There are PPAs on Launchpad
>> where you can get kernels with the BFS scheduler for Lucid and Karmic.
>> On my system, it really seems to make the system much more reponsive. I
>> hope that the Linux kernel team consider including the BFS scheduler as
>> an option in future kernel releases, and until then I think the Ubuntu
>> team should consider making a BFS kernel the default for the desktop
>> version of Ubuntu.
>>
>> --
>> Heavy Disk I/O harms desktop responsiveness
>> https://bugs.launchpad.net/bugs/131094
>> You received this bug notification because you are a direct subscriber
>> of the bug.
>>
>
>
> --
> Paulo José da Silva e Silva
> Professor Associado, Dep. de Ciência da Computação
> (Associate Professor, Computer Science Dept.)
> Universidade de São Paulo - Brazil
>
> e-mail: <email address hidden>         Web: http://www.ime.usp.br/~pjssilva
>
> --
> Heavy Disk I/O harms desktop responsiveness
> https://bugs.launchpad.net/bugs/131094
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in The Linux Kernel: Invalid
> Status in “linux” package in Ubuntu: Confirmed
> Status in “linux-source-2.6.22” package in Ubuntu: Won't Fix
>
> Bug description:
> Binary package hint: linux-source-2.6.22
>
> When compared with 2.6.15 in feisty, heavy disk I/O causes increased iowait times and affects desktop responsiveness in 2.6.22
>
> this appears to be a regression from 2.6.15 where iowait is much lower and desktop responsiveness is unaffected with the same I/O load
>
> Easy to reproduce with tracker - index the same set of files with 2.6.15 kernel and 2.6.22 kernel and the difference in desktop responsiveness is massive
>
> I have not confirmed if a non-tracker process which does heavy disk i/o (especially writing) replicates this yet - will do further investigation soon
>
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