[mythtv-users] High load, low CPU usage

MegaDeTH megadeth at geekopolis.com
Sun Jul 13 23:05:29 EDT 2003


Also odd that TOP doesnt list how much memory is active/inactive.  Aside 
from that, your load is horrible, even on my dual 400 server I dont get 
load that high compiling kernels, there's something really wrong, you 
also have a LOT of processes running, both your sample top's have 150 
processes going, do you have lots of services running on that box?  On 
my desktop with a few things open, web/email/icq/irc/openoffice  I see 
~100 procs going.

On all my machines I run 2.4.21 with the preemptive & low latency 
patches, really makes the machine feel alot faster.

I've started playing with these patches too..

http://members.optusnet.com.au/ckolivas/kernel/



Shawn wrote:
> You might be experiencing scheduler starvation. What kernel are you
> using? (uname -r, but if you're using myth, you already know that)
> 
> 
> 
> On Sat, 2003-07-12 at 15:06, Steve Hill wrote:
> 
>>On Sat, 12 Jul 2003, Steve Hill wrote:
>>
>>
>>>I've just fiddled some BIOS settings and managed to get it to assign the 
>>>sound cards separate IRQs.  I think this may have reduced (or possibly 
>>>even resolved) the problem, but I need to test it for a while longer.
>>
>>Nope, it doesn't seem to have fixed the problem :(
>>The really odd thing is that sometimes it will run quite happilly with 
>>fairly minimal load (under 0.30) for an hour or more at a time and then 
>>other times it really loads up. :(
>>
>>Another top output below, but it doesn't really show a lot...
>>
>>  9:04pm  up 52 min,  3 users,  load average: 3.73, 2.05, 1.35
>>132 processes: 125 sleeping, 7 running, 0 zombie, 0 stopped
>>CPU states: 29.1% user,  0.7% system,  0.0% nice, 70.0% idle
>>Mem:   255492K av,  252044K used,    3448K free,  0K shrd,   16156K buff
>>Swap:  530136K av,   64736K used,  465400K free              86336K cached
>>
>>  PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM   TIME COMMAND
>> 1633 root      -1 -20 57216  35M  5104 S <  22.5 14.1   2:12 mythbackend
>> 1685 root      11   0  302M  24M 13192 R     4.3  9.6   2:05 X
>> 1874 steve      9   0 43504  42M 19804 R     2.5 16.8   0:36 mythfrontend
>> 1851 steve      9   0  3364 3364  1928 S     0.1  1.3   0:00 sawfish
>>    1 root       8   0   480  448   428 S     0.0  0.1   0:04 init
>>    2 root       9   0     0    0     0 SW    0.0  0.0   0:00 keventd
>>    3 root       9   0     0    0     0 SW    0.0  0.0   0:00 kapmd
> 
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