Re: Current has hosed the i8254 timecounter...

2000-11-15 Thread Adrian Chadd

On Tue, Nov 14, 2000, John Baldwin wrote:

  I'm seeing something similar with -current on this laptop here. Magically,
  if I jiggle the mouse whilst playing an mp3, things start to skip and the
  clock goes *way* off way (sometimes by a few seconds in a few seconds. :)
 
 That is probably due to the random harvesting thread.  Or rather, that the
 overhead of ithreads together with the random kthread and the load of playing
 mp3's is starving your CPU.  Do you have any idle time at all when this happens?

Yup, plenty. Its a fast laptop. I can get real numbers back again tomorrow.



Adrian

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Adrian Chadd"Programming is like sex:
[EMAIL PROTECTED]   One mistake and you have to support for
a lifetime." -- rec.humor.funny



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Re: Current has hosed the i8254 timecounter...

2000-11-14 Thread John Baldwin


On 14-Nov-00 Adrian Chadd wrote:
 On Mon, Nov 13, 2000, Poul-Henning Kamp wrote:
 
 It seems that something recently toasted the quasi-magic i8254 timecounter
 code to the point of unusability.
 
 On my laptop I run a ntpdate every minute, and the result looks like this:
 
 
 I'm seeing something similar with -current on this laptop here. Magically,
 if I jiggle the mouse whilst playing an mp3, things start to skip and the
 clock goes *way* off way (sometimes by a few seconds in a few seconds. :)

That is probably due to the random harvesting thread.  Or rather, that the
overhead of ithreads together with the random kthread and the load of playing
mp3's is starving your CPU.  Do you have any idle time at all when this happens?

-- 

John Baldwin [EMAIL PROTECTED] -- http://www.FreeBSD.org/~jhb/
PGP Key: http://www.baldwin.cx/~john/pgpkey.asc
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/


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Re: Current has hosed the i8254 timecounter...

2000-11-14 Thread Rogier R. Mulhuijzen


I'm seeing something similar with -current on this laptop here. Magically,
if I jiggle the mouse whilst playing an mp3, things start to skip and the
clock goes *way* off way (sometimes by a few seconds in a few seconds. :)

I've had this for a few weeks now (the skipage). It has been explained as 
IRQ latency due to SMPNG code.

Can someone make a guestimate on when this will be fixed?

Also I was dd'ing the install floppies today, and when I was in X with xmms 
playing I got about 300-600 bytes/s transfer rate to fd0. After a reboot 
and being on the commandline I got 27K/s. Except when I moved my mouse, 
then the transfer top floppy would slow down straight away.

 DocWilco



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