8 Feb
2006
8 Feb
'06
3:48 p.m.
On Wed, Feb 08, 2006 at 11:41:18AM +0100, Florian Schmidt mista.tapas-at-gmx.net |LAU|
wrote:
On Tue, 07 Feb 2006 19:43:18 -0500
Lee Revell <rlrevell(a)joe-job.com> wrote:
Yes, I tried that, and it didn't work.
On Tue, 2006-02-07 at 18:46 -0500, Chuck Martin
wrote:
i think the kernel thread in question is "softirq-timer/0". It is kinda
resistant against the usual
chrt -f -p `pidof "softirq-timer/0"` On Tue, Feb 07, 2006 at 05:22:23PM -0500, Lee
Revell rlrevell-at-joe-job.com |LAU| wrote:
Not sure, it's in the list archive. Hmm, IIRC this might have been related to the
softirq timer thread being
preempted - try setting it to the maximum RT priorirty (99).
How is that done? (This is on Slackware 10.0).
but something like this works:
/usr/bin/chrt -f -p 96 `/usr/bin/getpid.sh "softirq-timer/0"`
where getpid.sh looks like this:
[snip]
I didn't try that with your script, but I did the equivalent by manually
checking the output of "ps aux" for the PID and entering
chrt -f -p 99 3
Here are the first few lines of "ps aux":
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.1 0.1 560 244 ? S 02:19 0:00 init [2]
root 2 0.0 0.0 0 0 ? S 02:19 0:00 [softirq-high/0]
root 3 0.0 0.0 0 0 ? S 02:19 0:00 [softirq-timer/0]
root 4 0.0 0.0 0 0 ? S 02:19 0:00 [softirq-net-tx/]
root 5 0.0 0.0 0 0 ? S 02:19 0:00 [softirq-net-rx/]
root 6 0.0 0.0 0 0 ? S 02:19 0:00 [softirq-scsi/0]
root 7 0.0 0.0 0 0 ? S 02:19 0:00 [softirq-tasklet]
root 8 0.0 0.0 0 0 ? S< 02:19 0:00 [desched/0]
root 9 0.6 0.0 0 0 ? S< 02:19 0:00 [events/0]
after trying a PID of 3, I also tried all of the other PIDs from 2 to 9,
as well as every PID for every "[IRQ x]" line in the output of "ps
aux",
where x is any number. None of them fixed the problem.
I just don't know whether this is a cure for the
problem at hand. I
haven't read the whole thread.
Any other suggestions? The original problem is that the system clock
is extremely slow, causing the time to be off and things like "sleep 1"
to take 10 to 30 times as long as they should.
Chuck