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Date: Thu, 10 Nov 2005 16:11:47 -0500
From: Greg Bur <greg.bur@gmail.com>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] Abysmally slow 2D performance using proprietary Nvidia driver on dual Xeon system (EMT64)
In-Reply-To: <Pine.BSO.4.58.0511101248460.21417@ida.bway.net>
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On 11/10/05, A. Khattri <ajai@bway.net> wrote:
>
> On Thu, 10 Nov 2005, Greg Bur wrote:
>
> > It definitely is not an issue with swapping to disk. For some reason X
> is
> > causing a high CPU load and it acts like its only using one processor.
> If I
> > switch back to the open source driver the load seems to be balanced
> across
> > all "4" processors. To make things even more interesting if I open
> glxgears
> > while using the Nvidia driver the problem can be temporarily alleviated=
.
> The
> > CPU load drops back to normal and the system is much more responsive.
> The
> > open source driver is working fine for now but I sure would like to kno=
w
> > what it is that I'm doing to cause the Nvidia driver to perform so
> poorly.
>
> Maybe the Nvidia drivers dont play well with threading and/or SMP?
That's my guess that this point. If I get the inspiration tonight I'll try
disabling hyperthreading in the BIOS and also recompiling the kernel withou=
t
SMP support. What has me beating my head against the wall so much is not th=
e
poor performance but the fact that one out of every 10 or 15 attempts the
driver works as expected. I suppose if something positive is to be made of
this it is that I will be more reluctant to play any games because I will
have to reboot into Windows.
--
>
> --
> gentoo-user@gentoo.org mailing list
>
>
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On 11/10/05, <b class=3D"gmail_sendername">A. Khattri</b> <<a href=3D"ma=
ilto:ajai@bway.net">ajai@bway.net</a>> wrote:<div><span class=3D"gmail_q=
uote"></span><blockquote class=3D"gmail_quote" style=3D"border-left: 1px so=
lid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
On Thu, 10 Nov 2005, Greg Bur wrote:<br><br>> It definitely is not an is=
sue with swapping to disk. For some reason X is<br>> causing a high CPU =
load and it acts like its only using one processor. If I<br>> switch bac=
k to the open source driver the load seems to be balanced across
<br>> all "4" processors. To make things even more interesting=
if I open glxgears<br>> while using the Nvidia driver the problem can b=
e temporarily alleviated. The<br>> CPU load drops back to normal and the=
system is much more responsive. The
<br>> open source driver is working fine for now but I sure would like t=
o know<br>> what it is that I'm doing to cause the Nvidia driver to perf=
orm so poorly.<br><br>Maybe the Nvidia drivers dont play well with threadin=
g and/or SMP?
</blockquote><div><br>
That's my guess that this point. If I get the inspiration tonight
I'll try disabling hyperthreading in the BIOS and also recompiling the
kernel without SMP support. What has me beating my head against
the wall so much is not the poor performance but the fact that one out
of every 10 or 15 attempts the driver works as expected. I
suppose if something positive is to be made of this it is that I will
be more reluctant to play any games because I will have to reboot into
Windows. <br>
</div><br><blockquote class=3D"gmail_quote" style=3D"border-left: 1px=
solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">-=
-<br><br>--<br><a href=3D"mailto:gentoo-user@gentoo.org">gentoo-user@gentoo=
.org</a>
mailing list<br><br></blockquote></div><br>
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