[lkml]   [2007]   [Jun]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [RFC PATCH 0/6] Convert all tasklets to workqueues
On Fri, 2007-06-22 at 23:59 +0200, Ingo Molnar wrote:
> * Linus Torvalds <> wrote:
> > If the numbers say that there is no performance difference (or even
> > better: that the new code performs better or fixes some latency issue
> > or whatever), I'll be very happy. But if the numbers say that it's
> > worse, no amount of cleanliness really changes that.
> Most of the tasklet uses are in rarely used or arcane drivers - in fact
> none of my 10 test-boxes utilizes _any_ tasklet in any way that could
> even get close to mattering to performance. In other words: i just
> cannot test this, nor do i think that others will really test this.

This is exactly why I included that CONFIG option in the first series.
Because, I only have a handful of hardware that actually uses tasklets.
And all those pr_debugs I had where turned on on most of my boxes. I
was not flooded with prints either (every function including
tasklet_schedule had a print).

So, basically, I can't do benchmarks. I was hoping to get this into -mm
with a easy way for people, who have hardware that uses tasklets
extensively, to run it with tasklets on and off to see if there is a
difference. My fear of not having a config option to switch between the
two (for -mm only) is that we may lose benchmarking from those that are
not comfortable at removing this patch from -mm. There are people out
there that download and test the -mm tree straight from
Just because someone compiles their own kernel doesn't mean they can (or
will) patch it.

-- Steve

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2007-06-23 01:03    [W:0.176 / U:1.784 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site