From owner-freebsd-emulation  Mon Apr  3 14: 4: 0 2000
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Date: Mon, 3 Apr 2000 23:01:31 +0200
From: Guido van Rooij <guido@gvr.org>
To: Arjan de Vet <Arjan.deVet@adv.iae.nl>
Cc: freebsd-emulation@freebsd.org
Subject: Re: Vmware 2.0 / NT4 / 100% system CPU time
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References: <20000403150934.A11399@adv.iae.nl>
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In-Reply-To: <20000403150934.A11399@adv.iae.nl>; from Arjan de Vet on Mon, Apr 03, 2000 at 03:09:34PM +0200
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On Mon, Apr 03, 2000 at 03:09:34PM +0200, Arjan de Vet wrote:
> 
> This works OK except for the fact that when doing nothing in the virtual
> PC (according to NT perf.mon.) it uses 98-100% system CPU time and using
> truss I only see this being repeated all the time at an enormous speed:

This did not happen a couple of months ago.

> 
>     syscall linux_newselect(0x15,0xbfbff474,0x0,0x0,0xbfbff468)
> 	    returns 0 (0x0)
>     syscall linux_ioctl(0xa,0xcb,0xbfbff540)
> 	    returns 311 (0x137)
>     syscall gettimeofday(0xbfbff4e8,0x0)
> 	    returns 0 (0x0)
>     syscall linux_newselect(0x15,0xbfbff474,0x0,0x0,0xbfbff468)
> 	    returns 0 (0x0)
>     syscall linux_ioctl(0xa,0xcb,0xbfbff540)
> 	    returns 311 (0x137)
>     syscall gettimeofday(0xbfbff4e8,0x0)
> 	    returns 0 (0x0)
> 

This ioctl is defined in vmmon:
/usr/ports/emulators/vmware2/work/vmware-distrib/vmmon-only/include/iocontrols.h

and seems to be IOCTLCMD_RUN. This seems to be the main interface from
VMware towards the vmmon module.
It strikes me as odd though that it has to be called 20+ times a second.
I am sure that it didn't use to be that way....

If Sam is listening: is this caused by a difference between vmware 1.2 and 2.0?

-Guido


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