Re: I/O scheduler Project

[Sandip Jadhav <jadhavsandip2402@xxxxxxxxx>]

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Thank you Chris For you help.

On Sun, Oct 21, 2012 at 3:34 PM, Chris Turner
<c.turner@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.

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Thank you Chris For you help.<br><br><div class=3D"gmail_quote">On Sun, Oct=
 21, 2012 at 3:34 PM, Chris Turner <span dir=3D"ltr">&lt;<a href=3D"mailto:=
c.turner@199technologies.com" target=3D"_blank">c.turner@199technologies.co=
m</a>&gt;</span> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div class=3D"im">On 10/21/12 09:42, Sandip =
Jadhav wrote:<br>
<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
=A0 I am thinking of working on I/O scheduler project which ismentioned<br>
</blockquote>
&gt; =A0 on dragonfly&#39;s project page.<br>
<br></div>
Probably the best references are the following manual pages + source code:<=
br>
<br>
=A0 dsched(4), dsched(9), dsched_bfq(4)<br>
<br>
Main kernel files are in &#39;sys/kern/dsched&#39;.<br>
<br>
There is a good post on the bfq scheduler here:<br>
<br>
<a href=3D"http://leaf.dragonflybsd.org/mailarchive/kernel/2011-08/msg00008=
.html" target=3D"_blank">http://leaf.dragonflybsd.org/<u></u>mailarchive/ke=
rnel/2011-08/<u></u>msg00008.html</a><br>
<br>
There is also a &#39;fq&#39; scheduler, but it does not have a manual page.=
<br>
A good intro &#39;project&#39; to get up to speed would maybe be to review<=
br>
this scheduler and write a manual page documenting it - there were also<br>
some kernel posts to dig up from when it was being added as well.<br>
<br>
Speaking of - survey time!<br>
<br>
Who&#39;s using I/O schedulers currently &amp; with what settings??<br>
<br>
I had turned off my fq config at some time previously in a failed/misguided=
<br>
attempt to isolate some stability problems and haven&#39;t got back around =
to<br>
reconfiguring..<br>
<br>
Cheers,<br>
<br>
- Chris<br>
</blockquote></div><br><br clear=3D"all"><br>-- <br>Thanks<br>Sandip Jadhav=
,<br><br><br>--When you come to the end of your rope, tie a knot and hang o=
n. <br>

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