[mythtv-users] FC4 High Load Average
Christian Hack
christianh at edmi.com.au
Fri Aug 5 10:00:52 UTC 2005
I recently reinstalled my system from scratch using Fedora Core 4 and
Jarod's guide (thanks Jarod). Everything installed with basically no
hitches. The machine is an XP2400 + nForce 1 motherboard + Nvidia GF 440MX
with 2 Hauppauge Nova-T DVB cards. I'm using the nvidia drivers from atrpms
and the DVB drivers which came with FC4. 3 x 120GB drives are LVMed to make
one small system partition (10GB) and one large storage partition. DMA is
definitely on on all drives.
Now when watching something and transcoding another program in the
background I'm seeing load averages up around the 4, 5 and 6 mark.
This starts to make the playback framerate stutter a bit. Sound is
unaffected, but the picture is a bit jerky.
Just playback of a something currently recording (about 22-25% CPU) results
in peak load averages up around the 3 mark. It fluctuates anywhere between
0.5 and 3 though. No playback (but still recording) and the average drops
down to <0.1 as expected. From top:
top - 19:51:20 up 5 days, 10:55, 4 users, load average: 2.78, 1.99, 2.07
Tasks: 97 total, 3 running, 94 sleeping, 0 stopped, 0 zombie
Cpu(s): 26.3% us, 4.3% sy, 0.7% ni, 66.1% id, 2.3% wa, 0.3% hi, 0.0% si
Mem: 515184k total, 509140k used, 6044k free, 13300k buffers
Swap: 0k total, 0k used, 0k free, 166596k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2917 mythtv 15 0 353m 169m 35m S 23.9 33.7 847:10.84 mythfrontend
2530 root 15 0 142m 69m 21m S 4.3 13.9 127:06.89 X
2301 root 16 0 233m 25m 12m S 2.0 5.1 61:50.25 mythbackend
2921 mythtv 25 10 35432 13m 6472 R 0.7 2.7 27:32.72 rhn-applet-gui
1 root 16 0 1744 568 492 S 0.0 0.1 0:02.47 init
2 root 34 19 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0
3 root RT 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/0
4 root 10 -5 0 0 0 S 0.0 0.0 0:00.02 events/0
5 root 13 -5 0 0 0 S 0.0 0.0 0:00.01 khelper
6 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 kthread
8 root 20 -5 0 0 0 S 0.0 0.0 0:00.00 kacpid
94 root 10 -5 0 0 0 S 0.0 0.0 0:00.02 kblockd/0
97 root 15 0 0 0 0 S 0.0 0.0 0:00.00 khubd
143 root 16 0 0 0 0 S 0.0 0.0 0:15.39 pdflush
144 root 15 0 0 0 0 S 0.0 0.0 0:13.49 pdflush
146 root 16 -5 0 0 0 S 0.0 0.0 0:00.00 aio/0
Before this I had Redhat 8.0 and was using a fairly recent CVS version of
Myth on the exact same hardware and I never saw these high load averages.
Any ideas what would cause loads this high?
Thanks
CH
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