Messages in this thread | | | Date | Fri, 14 Jan 2005 01:11:18 +0100 | From | Pavel Machek <> | Subject | Re: VST patches ported to 2.6.11-rc1 |
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Hi!
> I really hate sf download system... Here are those patches (only > common+i386) ported to 2.6.11-rc1.
Good news is it booted. But I could not measure any powersavings by turning it on. (I could measure difference between HZ=100 and HZ=1000).
Hmm, it does not want to do anything. threshold used to be 1000, does it mean that it would not use vst unless there was one second of quiet state? I tried to lower it to 10 ("get me HZ=100 power consumption") but it does not seem to be used, anyway:
root@amd:/proc/sys/kernel/vst# cat successful_vst_exit 0 root@amd:/proc/sys/kernel/vst# cat external_intr_exit 0 root@amd:/proc/sys/kernel/vst#
> +config HIGH_RES_RESOLUTION > + int "High Resolution Timer resolution (nanoseconds)" > + depends on HIGH_RES_TIMERS > + default 1000 > + help > + This sets the resolution in nanoseconds of the CLOCK_REALTIME_HR and > + CLOCK_MONOTONIC_HR timers. Too fine a resolution (small a number) > + will usually not be observable due to normal system latencies. For an > + 800 MHz processor about 10,000 (10 microseconds) is recommended as a > + finest resolution. If you don't need that sort of resolution, > + larger values may generate less overhead.
Ugh, if minimum recomended value is 10K, why does it have 1K as a default?
> + The system boots with VST enabled and it can be disabled by: > + "echo 0 > /proc/sys/kernel/vst/enable".
It definitely booted with vst disabled here... echo 1 did the trick through.
>short_timer_fns This is an array of 5 entries of the form > ... > 0xc110ea80 when the timer expires. >Both of these arrays are kept as circular lists and read back such >that >the latest entry is presented to the reader first. The entries are >cleared when read.
...it is bad idea to have them world-readable, then. Pavel
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