From owner-freebsd-current  Sat Sep 15  1:25:22 2001
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From: Gary Jennejohn <garyj@jennejohn.org>
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To: Mike Smith <msmith@freebsd.org>,
	Geoff Rehmet <geoff@illuminati.is.co.za>
Subject: ACPI and -current performance (was Re: -current TCP performance hosed?)
Date: Sat, 15 Sep 2001 10:25:32 +0200
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Cc: Bosko Milekic <bmilekic@technokratis.com>, current@freebsd.org
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On Saturday 15 September 2001 00:18, Mike Smith wrote:
> > Nope, no debug options, but I am getting loads of
> >
> > microuptime() went backwards (29804.3839847 -> 29804.925730)
>
> ALi chipset?  Try turning off the ACPI timer if you haven't already;
>
> set debug.acpi.disable="timer"
>
> at the loader prompt.  If this works, please let me know (with ACPI in the
> subject line so I don't miss it).
>

Just an additional data point.

I was getting lousy performance under -current with ISDN. The transfers would 
hang for long periods of time with a fairly large number of used mbufs - 
which apparently were not being emptied.

Using the above hint at boot time has restored the normal performance.

Interstingly, I never saw performance problems over ethernet.

Note that this is a ASUS A7M266 mobo with the AMD760 chipset.

--- 
Gary Jennejohn garyj@jennejohn.org gj@freebsd.org

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