Skip site navigation (1)Skip section navigation (2)
Date:      Wed, 13 Dec 2000 00:47:09 -0500
From:      Barry Lustig <barry@lustig.com>
To:        vns@delta.odessa.ua
Cc:        nsayer@kfu.com, emulation@freebsd.org, dillon@earth.backplane.com
Subject:   Re: VMWare performance when returning from suspend to disk
Message-ID:  <3A370D5C.B2569990@lustig.com>
References:  <20001211003601.B937@gblx.net> <3A369583.A8F6236B@sftw.com> <200012130515.AAA00406@jupiter.delta.ny.us>

next in thread | previous in thread | raw e-mail | index | archive | help
"Vladimir N.Silyaev" wrote:
> 
> In muc.lists.freebsd.emulation, you wrote:
> >> VMWare running on dual 800Mhz with 512MB RAM runs great, except when I
> >> suspend to disk and then restore that image.  When the restored image starts
> >> running, the mouse will move for a few moments and then freeze and then start
> >> moving again.  The same behavior happens to window input.  During the
> >> freezes, VMWare seems to be doing a lot of I/O.  Any thoughts on where to
> >> look?
> >
> >I see this same symptom. My guest is win2k with 64M of RAM on a machine
> >with 192M. I can only suspect that it's some part of the guest
> >initialization that doesn't get run when you resume that does get run
> >when you boot, and that doesn't matter on Linux (since presumably one
> >doesn't see this when the host is a Linux box). This implies that it's a
> >bug in vmmon, but I don't know enough about that code to make coherent
> >suggestions. :-)
> Not likely. Actualy vmmon module it's very simple - it just has
> functionality to allocate fixed memory pages and make context switch back
> and forward to huge piece of code executed at RING 0. This code doesn't
> make any OS interaction, so fortunatly, this binary image executed on Linux
> also runned on FreeBSD (I think the same code used in VMware/NT).
> 
> Returning to mentioned problem, my guess is it's a differencies it the
> VM implementation between FreeBSD and Linux. But unfortunatly we don't have
> any ability to traceback that.
> 
I wonder if this has anything to do with a VM problem Matt Dillon just posted
about in freebsd-stable (Re: Extreme high load with 12/7 4-releng).

barry


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-emulation" in the body of the message




Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?3A370D5C.B2569990>