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Date: Tue, 29 Jan 2002 05:17:31 +0800 (SGT)
From: Jeff Chua <jeffchua@silk.corp.fedex.com>
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To: Jeff Chua <jchua@fedex.com>
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Subject: Re: 2.4.18-pre7 slow ... apm problem
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On Tue, 29 Jan 2002, Jeff Chua wrote:

> > > 1) keyboard rate is a bit slow on 2.4.18-pre7 compared to 2.4.18-pre6.
> > What _exactly_ does this mean? Can you elaborate more on your setup and
> > your problem?
>
> slow ... means that even without vmware, if I just hit return, the lines
> would scroll for about every 10 lines and there'll be a litte pause (<0.3
> sec). With pre6, there's no such behavior, and if CONFIG_APM_CPU_IDLE is
> not set, the "pause" goes away.

2.0 cps on "guest" linux os just pressing "g". 30 cps on "host" linux os.

>
> > > 2) On vmware 3.0, ping localhost is very slow. 2.4.18-pre6 has not
> > such problem.
> > 1) linux with vmware and guest system linux
>
> "host" system is linux. "guest" system is linux (actually, I tried with NT
> as well, same problem).
>
> If I ping from the "host" linux console to the "guest" linux system,
> responses came back, and does not hang. I'll double check this last point.
> Got to recompile the kernel again.

slow from "guest" os to "host" os.
slow from "guest" os to guest's 127.0.0.1

fast from "host" os to "guest" os.

If I set idle_threshold to 100, problem goes away.

APM is not enabled on "guest" os.

Jeff.

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