linux-kernel - Re: [PATCH 00/20] mm: Preemptibility -v4

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Message-ID: <AANLkTinFc+1wimmN3CQQzO-s3=uah8YDFzdy+Da=vsCx@mail.gmail.com>
Date:	Thu, 2 Sep 2010 17:36:35 +0200
From:	Mat <jackdachef@...il.com>
To:	peterz@...radead.org
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>, piotr@...owicz.com
Subject: Re: [PATCH 00/20] mm: Preemptibility -v4

Hi Peter,

I'm currently also testing your preemptibility patchset and have to
say that on top of 2.6.36-rc3 it really seems to make a positive
difference for me :)

since I'm only a regular (power)user utilizing linux-distributions for
my everyday work I can report only about that:

- the desktop stays very responsive even during copying, backing up
and transferring of large amounts of data (e.g. backing up 1 TB of
data via rsync between different filesystems); this includes the GUI
staying responsive, the mouse not lagging and apps opening up almost
instantaneously
- there is very little to no noticable lags or repetitions when
hearing webradio or audios during longer periods of time
- and much more


considering that 2.6.36 received several other improvements in this area
- http://lkml.org/lkml/2010/8/1/40, the patches from Wu Fengguang and
KOSAKI Motohiro
- concurrency managed workqueues
- and other performance improvements, especially VFS
may also add up to this

anyways: please consider adding this to next/mainline during the next
merge cycle

my linux-desktop didn't feel that reponsive for a long time ! ^^
if I recall correctly if felt comparably responsive when I used Con's
RSDL or SD scheduler - CFS and CFQ have made great progress in terms
of desktop usage, interactivity and delays

Regards and thanks to everyone involved in the continued improvements
in this area

Mat
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