Another update:
This is the same testing but for cfs-v7.
Summary:
1. context switch rate is much higher than for cfs-v6 for the same
sched_granularity_ns 20
2. Video playback suffered. FPS is much lower.
3. Trying different values of sched-granularity_ns didn't help
(neither did the default)
so SD context-switched twice as much and saturated the CPU fully, while
under cfs-v6 there was 34% idle time left. That double context-switch
rate and higher CPU utilization could easily result in you experiencing
a 'smoother' desktop (and smoother video playback) on SD.
could you try to maximize
On 27/04/07, hechacker1 <[EMAIL PROTECTED]> wrote:
"REPORT: sd-0.46 vs cfs-v6 vs mainline 2.6.21-rc7 Beryl + Video + Audio"
Hardware:
Dell Inspiron 700m laptop
1.7GHz Pentium M (Dothan 2M cache)
2GB RAM
1000Hz
Gentoo Linux
dyn-tick
700m # cat /sys/devices/system/cpu/cpu0/cpufreq/ondemand/samplin
* hechacker1 <[EMAIL PROTECTED]> wrote:
> "REPORT: sd-0.46 vs cfs-v6 vs mainline 2.6.21-rc7 Beryl + Video + Audio"
thanks for testing it out.
one immediate observation i have is that you used a 2msec granularity
setting on CFS, but even that did not cause context-switching as high as
SD's rr_
On Thu, 2007-04-26 at 21:01 -0700, hechacker1 wrote:
> Overall:
> SD-0.46 is my new choice for scheduler. When not under load everything
> run's better or similarly to cfs or mainline. Under load however it
> shows the most responsiveness.
>
> Occasionally I had complete mouse freezes with cfs wh
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