8 Oct
2009
8 Oct
'09
9:20 p.m.
Hi!
I use Kubuntu Karmic testing (will be released 29 Oct). After some upgrade I
have got this problem: on high system load (say, building NetBeans from
sources or other JVM-running intensive task - JVM is very greedy wrt CPU,
starting multiple threads) clicks takes place on playing back (doesn't depends
on player - MPD (very stable!) and Amarok using shows the same result).
At first I have tried to play with different io schedulers: deadline and noop
seem to be slightly better rather anticipatory and cfq, but still stutters
takes place. So the problem seems to be related with CPU shareing rather hdd
access.
Where to dig in further? I'd like to avoid using of rt-kernel as far as I know
generic one is able to be smooth wrt my situation.
9 Oct
9 Oct
8:04 a.m.
You could nice up the JVM thing or you could use a BFS-patched kernel. Other
than that, no way out because this is an inherent issue of the Linux kernel.
You might try using jack output for those apps, and in realtime, because
then they would have the front seats :)
8:46 a.m.
On Friday 09 October 2009 14:03:51 Ray Rashif wrote:
You could nice up the JVM thing or you could use a
BFS-patched kernel.
Other than that, no way out because this is an inherent issue of the Linux
kernel. You might try using jack output for those apps, and in realtime,
because then they would have the front seats :)
I have found, multiple issues related to CPU scheduling were fixed in kernel
2.6.31.3. IIRC, the problem arised approximately when I upgraded the system to
2.6.31.2, so, I hope, 2.6.31.3 will cure the issue.
9:07 a.m.
2009/10/9 Andrew Gaydenko <a(a)gaydenko.com>
On Friday 09 October 2009 14:03:51 Ray Rashif wrote:
That was fast, but good to know. I myself was just preparing my menu.lst to
boot to a .2 kernel =/
You could nice up the JVM thing or you could use
a BFS-patched kernel.
Other than that, no way out because this is an inherent issue of the
Linux
kernel. You might try using jack output for
those apps, and in realtime,
because then they would have the front seats :)
I have found, multiple issues related to CPU scheduling were fixed in
kernel
2.6.31.3. IIRC, the problem arised approximately when I upgraded the system
to
2.6.31.2, so, I hope, 2.6.31.3 will cure the issue.
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participants (2)
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Andrew Gaydenko -
Ray Rashif