[mythtv-users] Very High 'System' CPU Usage - nxtvepg was root cause
Simon Message
smessage at t-online.de
Thu Dec 2 21:48:42 UTC 2004
Hi there,
I have been using mythtv for about 2 months. It worked ok, but the performance was not great, this evening I finally tracked down the root cause, so I thought I would post to the list in case anyone else had the same problem. Basically when nxtvepg and mythtv were running at the same time, the idle cpu was 0% and any spare cpu was used by the system process (as shown in top), up to 80% system! Stopping nxtvepg seems to have solved the problem. I have done ABA checks, and I am sure it is nxtvepg with myth together.
nxtvepg is really useful here in Germany though, so I will keep experimenting to see if I can get it to behave. I think some people have managed it. At least I know where to look now. I think others have had this problem also, but I did not see a message on the list with the symptoms so explicitly stated.
I can now watch live TV, MP4 (standard settings video, slightly better audio) on my AthlonXP 1600+ at 576x576 with 20% idle CPU, impossible before.
Hope this helps someone,
Simon
PS Just for everyone's amusement here are the other things I tried:
3 different motherboards (latest purchased this evening...)
CPU upgrade
RAM upgrade
kernel upgrade (2.6.x to 2.6.9)
distro change, Suse 9.1 to KnoppMyth
IDE to SCSI hard disc
recording to ramdisk
different filesystems
overclocking
underclocking
almost every option in the bios
pci card in every different slot etc etc.
Good job the wife has been away for a couple of weeks...
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mythtv.org/pipermail/mythtv-users/attachments/20041202/e13d9152/attachment.html
More information about the mythtv-users
mailing list