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SubjectRE: call for more SD versus CFS comparisons (was: Re: [ck] Mainline plans)
Date
From
> -----Message d'origine-----
> De : linux-kernel-owner@vger.kernel.org
> [mailto:linux-kernel-owner@vger.kernel.org] De la part de
> Fortier,Vincent [Montreal]
> Envoyé : 12 juin 2007 21:36
> À : Miguel Figueiredo; linux kernel mailing list; ck@vds.kolivas.org
> Cc : Con Kolivas; Ingo Molnar
> Objet : RE: call for more SD versus CFS comparisons (was: Re:
> [ck] Mainline plans)
>
> > -----Message d'origine-----
> > De : linux-kernel-owner@vger.kernel.org
> > [mailto:linux-kernel-owner@vger.kernel.org] De la part de Miguel
> > Figueiredo Envoyé : 11 juin 2007 20:30
> >
> > Hi all,
> >
> > some results based on massing_intr.c by Satoru, can be found on
> > http://people.redhat.com/mingo/cfs-scheduler/tools/massive_intr.c
> >
> >
> > I know that other people, who read lkml, also tested the
> same way, it
> > would be nice if they also post their data.
> >
>
> For the pleasure of comparing CPU schedulers, both CFS v16 &
> full CK2 patched pre-built kernels for Fedora 7 using latest
> build 3194 are now available at http://linux-dev.qc.ec.gc.ca
>
> There is also a not yet fully tuned YUM repository
> configuration file available at
> http://linux-dev.qc.ec.gc.ca/kernel/fedora/alt-sched.repo
> Although I suggest you download the rpm's directly from the
> web page & install both manually using rpm -ivh --force
>
> Have fun.
>

Also, now that I think of it, here are my results:

Test:
./massive_intr 20 6000

Hardware:
- Athlon 64 4200+
- 2GB ram
- nVidia 6600GT using latest Beta driver NVIDIA-Linux-x86_64-100.14.06-pkg2.run
- SATA drive
- On-board audio (00:04.0 Multimedia audio controller: nVidia Corporation CK804 AC'97 Audio Controller (rev a2))

Kernels:
CFS v16 2.6.21 FC7 build 3194
CK2 2.6.21 FC7 build 3194

Here is what the TOP output was looking like for both case:
top - 13:36:22 up 38 min, 4 users, load average: 20.41, 13.43, 7.49
Tasks: 172 total, 21 running, 150 sleeping, 0 stopped, 1 zombie
Cpu0 : 99.7%us, 0.3%sy, 0.0%ni, 0.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu1 : 94.7%us, 4.6%sy, 0.0%ni, 0.0%id, 0.0%wa, 0.3%hi, 0.3%si, 0.0%st
Mem: 2058860k total, 1217132k used, 841728k free, 56456k buffers
Swap: 1959888k total, 0k used, 1959888k free, 781636k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
6099 megalout 20 0 7860 224 136 R 10 0.0 0:26.12 massive_intr
6102 megalout 20 0 7860 224 136 R 10 0.0 0:26.27 massive_intr
6104 megalout 20 0 7860 224 136 R 10 0.0 0:26.51 massive_intr
6105 megalout 20 0 7860 224 136 R 10 0.0 0:26.32 massive_intr
6107 megalout 20 0 7860 224 136 R 10 0.0 0:26.62 massive_intr
6112 megalout 20 0 7860 224 136 R 10 0.0 0:26.32 massive_intr
6116 megalout 20 0 7860 224 136 R 10 0.0 0:26.26 massive_intr
6109 megalout 20 0 7860 224 136 R 10 0.0 0:26.32 massive_intr
6115 megalout 20 0 7860 224 136 R 10 0.0 0:26.50 massive_intr
6118 megalout 20 0 7860 224 136 R 9 0.0 0:26.37 massive_intr
6100 megalout 20 0 7860 224 136 R 9 0.0 0:26.51 massive_intr
6103 megalout 20 0 7860 224 136 R 9 0.0 0:26.24 massive_intr
6106 megalout 20 0 7860 224 136 R 9 0.0 0:26.32 massive_intr
6108 megalout 20 0 7860 224 136 R 9 0.0 0:26.32 massive_intr
6110 megalout 20 0 7860 224 136 R 9 0.0 0:26.54 massive_intr
6111 megalout 20 0 7860 224 136 R 9 0.0 0:26.37 massive_intr
6113 megalout 20 0 7860 224 136 R 9 0.0 0:26.56 massive_intr
6114 megalout 20 0 7860 224 136 R 9 0.0 0:26.30 massive_intr
6117 megalout 20 0 7860 224 136 R 9 0.0 0:26.34 massive_intr
6101 megalout 20 0 7860 224 136 R 9 0.0 0:26.31 massive_intr
4681 root 20 0 196m 67m 12m S 8 3.4 4:06.00 X
6036 megalout 20 0 694m 53m 32m S 2 2.6 0:07.82 amarokapp
4904 megalout 20 0 271m 9.9m 6948 S 1 0.5 0:18.16 gkrellm
5054 megalout 20 0 160m 45m 20m S 1 2.2 0:10.90 firefox-bin
5201 megalout 20 0 160m 9304 5480 S 1 0.5 0:01.42 emerald
5210 megalout 20 0 240m 12m 6284 S 1 0.6 0:33.29 beryl


CFS v16:
---------
beryl interractivity way too unresponsive..
- window decoration highlight taking around 5-10 secs to switch between windows focus
- window movement either impossible or animation laggy enough to not being seen at all.
- Cube rotation still possible using mouse scroll although really really really laggy

Amarok MP3 music:
- No audio skips at all. Playing really well!


CK2 patchset:
-------------
Beryl interractivity almost totally unresponsive... In fact mouse movement was near-impossible to control.
- window movement totally impossible
- Cube rotation still possible using mouse scroll although there was no animation at all

Amarok MP3 music:
- Same as CFS, no skips at all. Playing really well!


I'll quote Martin on the Ck mailing list:
> According to Ingo most of the interactivity issues should be fixed by now.
> Still I do not see how that translates to "CFS was generally better".

Well, here you go:
For having followed RSDL since version 0.28 I'd say Con did a really great job but for me CFS v16 now, on my hardware, offers better interactivity using beryl window manager.

- vin
-
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