Ubuntu
linux package

  1. Bug #620074
  2. Comment #38

Comment 38 for bug 620074

Revision history for this message
In , larppaxyz (larppaxyz-linux-kernel-bugs) wrote :

Different scheduler (#11) doesn't seem to do much. I did some quick and dirty testing with my laptop :

Linux lupaus 2.6.28-customlupaus #4 SMP PREEMPT Thu Dec 25 15:05:35 EET 2008 x86_64 GNU/Linux
Vanilla 2.6.28 kernel, config from Ubuntu 8.10, with some modifications to suit my laptop

with io scheduler cfq
./threadtest 100 200000
min:0.004ms|avg:0.007-0.008ms|mid:0.008ms|max:894.480ms|duration:187.588s

with elevator=as (eg. io scheduler anticipatory)
./threadtest 100 200000
min:0.004ms|avg:0.007-0.008ms|mid:0.008ms|max:884.016ms|duration:188.248s

---

with io scheduler cfq
./proctest 50 100000
min:0.005ms|avg:0.005-0.006ms|mid:0.006ms|max:460.631ms|duration:35.773s

with elevator=as (eg. io scheduler anticipatory)
./proctest 50 100000
min:0.005ms|avg:0.006-0.006ms|mid:0.006ms|max:479.695ms|duration:36.645s