From: "Petr Vandrovec" <VANDROVE@vc.cvut.cz>
To: Antonio Vargas <wind@cocodriloo.com>
Cc: linux-kernel@vger.kernel.org, pme@hyglo.com
Subject: Re: vmware strange scheduling priority
Date: Mon, 16 Jun 2003 21:31:23 +0200 [thread overview]
Message-ID: <49A923E3DE6@vcnet.vc.cvut.cz> (raw)
On 15 Jun 03 at 20:59, Antonio Vargas wrote:
> On Mon, Jun 16, 2003 at 08:39:38PM +0200, Peter Enderborg wrote:
> > Im playing with vmware 4.0 workstation. And it do some strange
> > things.
> > I start vmware with nice and I got this:
> > 26499 pme 19 19 95980 93M 95020 R N 12 32.6 24.8 8:55
> > vmware-vmx
> > 26439 pme 19 19 8416 8008 7692 R N 8 3.2 2.0 2:02
> > vmware-vmx
> > 26492 pme 6 -10 95980 93M 95020 R < 12 2.6 24.8 0:34
> > vmware-vmx
> > 26409 pme 19 19 4900 3916 2484 S N 0 1.0 1.0 0:29
> > vmware
> > 26433 pme 5 -10 8416 8008 7692 S < 8 0.5 2.0 0:29
> > vmware-vmx
> > 26493 pme 5 -10 8056 7268 6988 S < 0 0.5 1.8 0:20
> > vmware-mks
> > 26495 pme 9 0 67672 65M 66888 S 0 0.2 17.4 0:11
> > vmware-vmx
> >
> >
> > It have changed the prioority to -10 for some of its own tasks. How
> > can that be done? Its a non suid binary started
> > by a normal user. It's very ugly, but Im more intressted in how it
> > can be done.
> > The kernel is a 2.4.20.
>
> pure guessing here...
> vmware relies on having kernel modules instaled.. perhaps
> the do an ioctl to enter the module and then they spin
> off some threads with nice -10 from inside?
Nope. vmware-vmx is suid...
Petr Vandrovec
vandrove@vc.cvut.cz
P.S.: And if you play with default priority for VMware, do not
complain that it is slow as a molase...
next reply other threads:[~2003-06-16 19:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-06-16 19:31 Petr Vandrovec [this message]
-- strict thread matches above, loose matches on Subject: below --
2003-06-16 18:39 Peter Enderborg
2003-06-15 18:59 ` Antonio Vargas
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