[mythtv-users] CPU Utilization Revisited

[Brian Foddy]

I've seen the same behavior for months, the X server seems
to cycle between almost no load to quite noticable.  Never
figured out why.

On Tuesday 20 May 2003 06:32 pm, Dan Robichaud wrote:
> I noticed something rather interesting last night as I was doing
> some testing at various resolutions and compression levels.
>
> I kept hearing people talking about seeing CPU utilizations of
> 4-9% for mythfrontend while watching live TV while whenever I
> looked, I was seeing more along the lines of 25-35% and was
> beginning to wonder whether I had X set up properly, etc, etc...
> (My X process also tends to eat up a lot of CPU - 20+ %...)
>
> Last night while experimenting with different compression
> settings and with top running from a telnet session on a
> different box, I noticed that my CPU utilization for X and
> mythfrontend noticeably dropped off (to 6-10%) once it had been
> up and running for a few minutes.  "Great!" I thought, "It's only
> on startup where it needs to consume a little more CPU to get
> things started up!"  But then I noticed over a long period of
> time that it would fluctuate back to those 30% levels again and
> then eventually back down to around 6% again.  Can anyone explain
> why this is?  I've also tried this in a lightweight windowm
> manager (fvwm2), but I get the same behaviour...
>
> I suppose I should also mention a little about my hardware/setup:
>
> MythTV 0.8 on RedHat 8.0
> Abit KG7 RAID MoBo
> AMD 1500+ XP
> 512 MB RAM
> 2 x Maxtor 120GB drives in RAID0
> SBLive! 5.1
> ATI TV Wonder
> ATI AIW Pro video card
>
> Not sure if it's related, but I should probably also mention that
> I tend to use RTJPEG settings at 480x480 (150-170 quality
> setting) because I find that the results are far better than
> MPEG4 when viewed on my 53" inch screen (I discuss this in
> another thread I just emailed out 5 minutes ago...)
>
> Dan Robichaud
>
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