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>
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"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
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