
"In recent weeks and months there has been quite a bit of work towards improving the responsiveness of the Linux desktop with some very significant milestones building up recently and new patches continuing to come. This work is greatly improving the experience of the Linux desktop when the computer is withstanding a great deal of CPU load and memory strain. Fortunately, the exciting improvements are far from over. There is a new patch that has not yet been merged but has undergone a few revisions over the past several weeks and it is quite small - just over 200 lines of code -
but it does wonders for the Linux desktop."
Member since:
2007-02-17
http://marc.info/?l=linux-kernel&m=128978361700898&w=2
(Imagine that pert were Xorg or whatnot instead)
Using Mathieu Desnoyers' wakeup-latency testcase:
With taskset -c 3 make -j 10 running..
taskset -c 3 ./wakeup-latency& sleep 30;killall wakeup-latency
without:
maximum latency: 42963.2 µs
average latency: 9077.0 µs
missed timer events: 0
with:
maximum latency: 4160.7 µs
average latency: 149.4 µs
missed timer events: 0
An order of magnitude improvement in latency for a small patch has got to be worthwhile.
Average latency improved from about 1 millisecond down to 150 microseconds. Maximum latency improved from 42 milliseconds down to 4 milliseconds.
Edited 2010-11-18 00:11 UTC