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From: bombadil@diku.dk (Kristian Nielsen)
Newsgroups: comp.sys.amiga.programmer
Subject: Re: Amiga system usage statistics (AmigaDOS 1.3)
Message-ID: <1991Mar25.161731.29334@odin.diku.dk>
Date: 25 Mar 91 16:17:31 GMT
References: <ben.5464@epmooch.UUCP>
Sender: news@odin.diku.dk (Netnews System)
Organization: Department of Computer Science, U of Copenhagen
Lines: 28

ben@epmooch.UUCP (Rev. Ben A. Mesander) writes:

>I'd like to write a program to compute percent CPU usage and store the
>usage data every so often into a file (I'd like to monitor how certain
>programs I run, such as UUCP news unbatching, use my system at 4AM and
>such). I'm aware of interactive tools like perfmon and Xoper, but I don't 
>know of any program that does what I want for the Amiga.

>Does anyone know of source to an interactive monitor program that I could
>look at and see how to collect this sort of data? Or could someone point
>me in the right direction (I have the RKM's)? Or is there a program that
>already does what I need?

>I'd like to be able to set the interval used to collect the CPU usage data,
>although, I suppose a fixed interval would not be useless.

Xoper, including the full source code (in >100k assembler) is available on
the fish series. From a brief look-over it would sem that it hooks into the
exec.library Switch() system call. This, however is less than
well-documented in the RMK's (probably for a good reason, but still...)

BTW, I suspect that Xoper isn't that accurate in its timings... On my GVP
28Mhz 3001 it likes to report that input.device is using about 40% of
CPU-time at full load (ray-tracing or similar). I really don't hope that
this is the case! (and if it is, how is a stock A500/2000 to run at all??)
Any comments on this?

	Kristian.