I/O scheduler Project

Sandip Jadhav jadhavsandip2402 at gmail.com
Tue Nov 27 19:40:54 PST 2012


Hello everyone,

As dragonfly doesn't have deadline scheduler, I was thinking about
implementing the deadline scheduler. will it be useful to have this policy
? does anyone have suggestion


On Sun, Oct 21, 2012 at 4:46 PM, Sandip Jadhav
<jadhavsandip2402 at gmail.com>wrote:

> Thank you Chris For you help.
>
>
> On Sun, Oct 21, 2012 at 3:34 PM, Chris Turner <
> c.turner at 199technologies.com> wrote:
>
>> On 10/21/12 09:42, Sandip Jadhav wrote:
>>
>>    I am thinking of working on I/O scheduler project which ismentioned
>>>
>> >   on dragonfly's project page.
>>
>> Probably the best references are the following manual pages + source code:
>>
>>   dsched(4), dsched(9), dsched_bfq(4)
>>
>> Main kernel files are in 'sys/kern/dsched'.
>>
>> There is a good post on the bfq scheduler here:
>>
>> http://leaf.dragonflybsd.org/**mailarchive/kernel/2011-08/**msg00008.html<http://leaf.dragonflybsd.org/mailarchive/kernel/2011-08/msg00008.html>
>>
>> There is also a 'fq' scheduler, but it does not have a manual page.
>> A good intro 'project' to get up to speed would maybe be to review
>> this scheduler and write a manual page documenting it - there were also
>> some kernel posts to dig up from when it was being added as well.
>>
>> Speaking of - survey time!
>>
>> Who's using I/O schedulers currently & with what settings??
>>
>> I had turned off my fq config at some time previously in a
>> failed/misguided
>> attempt to isolate some stability problems and haven't got back around to
>> reconfiguring..
>>
>> Cheers,
>>
>> - Chris
>>
>
>
>
> --
> Thanks
> Sandip Jadhav,
>
>
> --When you come to the end of your rope, tie a knot and hang on.
>



-- 
Thanks
Sandip Jadhav,


--When you come to the end of your rope, tie a knot and hang on.
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