Date: Sun, 28 May 2000 13:53:31 +1000 From: "Jacob A. Hart" <c9710216@studentmail.newcastle.edu.au> To: Doug Barton <DougB@gorean.org> Cc: Sheldon Hearn <sheldonh@uunet.co.za>, FreeBSD-CURRENT <freebsd-current@FreeBSD.ORG> Subject: Re: Scheduler changes? Message-ID: <20000528135331.A241@carcass.au.hartware.com> In-Reply-To: <3930243C.CBAA911E@gorean.org>; from DougB@gorean.org on Sat, May 27, 2000 at 12:38:36PM -0700 References: <20000526131949.A9232@carcass.au.hartware.com> <74533.959349665@axl.ops.uunet.co.za> <20000527173624.A207@carcass.au.hartware.com> <3930243C.CBAA911E@gorean.org>
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On Sat, May 27, 2000 at 12:38:36PM -0700, Doug Barton wrote:
>
> Try setting the nice value for rc5 to something lower than 20, but
> higher than the highest (lowest) value running on your system. There was
> a bug with the scheduler in the past that items run at nice 20 were
> actually getting more cpu than they were supposed to.
I remember the scheduler bug you're talking about. My system feels much
the same as it did during 4.0-CURRENT when that bug was active. I had a
collection of wrapper scripts for CPU intensive programs that suspended
rc5des, ran the program, then reenabled it again. Should have held on to
them, I guess.
> If this change
> fixes things for you, please report it asap, since my understanding is
> that this problem is rather elusive and annoying.
No, it didn't work, unfortunately. To test it, I renice'd rc5des to a
couple of different values while encoding an MP3.
When niced at: +10 rc5des chewed ~40-45% CPU
+15 rc5des chewed ~35-40% CPU
+20 rc5des chewed ~25-30% CPU
If there's any other information I can provide, just let me know.
-jake
--=20
Jacob A. Hart <c9710216@studentmail.newcastle.edu.au>
Powered by: FreeBSD 5.0-CURRENT #9: Fri May 26 07:39:27 EST 2000
I believe the technical term is "Oops!"
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