Subj : PerfView API
To   : All
From : Lesha Tsoorgaev
Date : Sun Jul 30 2000 01:56 pm

Hello All,

On 30/Jul/00 at 14:24 Lesha Tsoorgaev writes to All:

 LT> The second question is about TIMER0.SYS. Can PIT manipulations 
 LT> affect PerfView accuracy? AFAIK it is based on the same timer 
 LT> channel 0.

The question is already obsolete. I have checked it, TIMER0 breaks PerfView 
mechanism til releasing IRQ0. It seems to be difficult to maintain PerfView 
during TIMER0 running. (But it seems to be even more difficult before and 
after, at least for me, at least using IRQ0 with PIT 0 default divider 65536.) 
Anyway maintaining PerfView mechanism will require further changes to CLOCK0x 
and, may be, TIMER0, IMHO.

Cheers,
\Lesha

--- MadMED v0.42i/OS2 (Apr 25 1997 15:17:26)
 * Origin: HDD2G/HPFS+HDD32M/RT-11 (2:5020/1613)

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