lkml.org 
[lkml]   [2003]   [Aug]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] O11int for interactivity
William Lee Irwin III wrote:
>> Well, I was vaguely hoping a useful way to instrument the io stuff
>> would already be out there.

On Tue, Aug 05, 2003 at 01:23:08PM +1000, Nick Piggin wrote:
> Not really.
> For a process doing blocking reads you could measure the time
> from when a process submits a read to when it gets the result.
> I suppose you also need some minimum rate too but I really can't
> see that being the problem here.

I'm at least aware of patches for 2.4.x that log io scheduling
decisions in the driver, which is basically what I was hoping for.

On a higher level, are you thinking there's some indication the
io schedulers themselves aren't involved? Or that something higher-
level should be instrumented? If so, what?


-- wli
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:47    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site