On Friday 14 February 2003 11:46 am, Harold L Hunt II wrote: > patrick charles wrote: > > On Thursday 13 February 2003 09:03 pm, David Dawes wrote: > >>On Thu, Feb 13, 2003 at 02:11:40PM -0700, patrick charles wrote: > >>>On Wednesday 12 February 2003 10:20 pm, David Dawes wrote: > >>>>On Tue, Feb 11, 2003 at 02:51:04PM -0700, patrick charles wrote: > >>>>>>On Saturday 08 February 2003 05:41 pm, David Dawes wrote: > >>>>>>>On Sat, Feb 08, 2003 at 01:07:25PM -0700, patrick charles wrote: > >>>>>>>>How would I communicate this? Somebody on XFree86 working with or > >>>>>>>>have contact with the appropriate people in kernel/agpgart > >>>>>>>>development? > >>>>>>> > >>>>>>>First of all, how are you "killing" the X server? I haven't seen > >>>>>>>this behaviour when the X server exits normally, and I've done a > >>>>>>>lot of testing where 32MB is allocated per run on machines with > >>>>>>>only 128MB of physical memory. > >>>>>>> > >>>>>>>There are people here familiar with the kernel agpgart driver. > >>>>>>> > >>>>>>>Note that just because top shows that there's little memory free > >>>>>>>doesn't mean that the agpgart driver isn't freeing it. Also the > >>>>>>>agpgart driver allocates physical pages, never swap. I'm not sure > >>>>>>>what the symptoms are when it can't get any free physical pages. > >>>>>>>On my test system the free memory indicated by top does go up when > >>>>>>>the X server exits, and this is on an otherwise idle system. > >>>>>>> > >>>>>>>So, I'd suggest starting a bare X server (run just 'X') on an > >>>>>>>otherwise idle system, see what top reports, then exit it cleanly > >>>>>>>(<Ctrl><Alt><Backspace>), and see if the free memory amount > >>>>>>>changes. Check the X server log to confirm how much memory was > >>>>>>>allocated via the agpgart mechanism (look for the lines containing > >>>>>>>"Allocated"). > >>>>>>> > >>>>>>>If that looks OK, then try the same thing you tried before but with > >>>>>>>a bare X server and an idle system. > >>>>>>> > >>>>>>>David > >>>>> > >>>>>David, > >>>>> > >>>>>I ran some tests as you suggested. I started up a bare X server using > >>>>>the command 'X' on an idle system. I then exited cleanly using > >>>>>ctrl-alt-bak. > >>>>> > >>>>>I recorded the amount of physical RAM free before and after the X > >>>>>start. I repeated this process. > >>>>> > >>>>>After 13 iterations, the machine became very sluggish. > >>>>> > >>>>>After 16 iterations, the machine hung. > >>>>> > >>>>>Still looks like X (or, the agpgart driver?) is not freeing resources. > >>>>>The machine gradually ran out of physical RAM. > >>>> > >>>>I just tried repeating this with what I think should be an even more > >>>>demanding configuration: 845G system with 128MB physical memory, 1MB > >>>>stolen memory (preallocated video memory), X configured to use 32MB > >>>>video memory, so just over 31MB of physical memory needs to be > >>>> allocated at each server start. > >>>> > >>>>After several iterations, I got to a pattern where the free memory > >>>>after the server starts is 2MB, and the free memory when it exits is > >>>>41MB. I went as far as 25 iterations without any change in this > >>>> pattern and without any slowdown. > >>>> > >>>>This is with RH 7.3, using the default kernel plus an agpgart driver > >>>>patched for correct 845G support. The 2.4.20 kernel should already > >>>> have the correct 845G agpgart support. > >>>> > >>>>The source for the agpgart driver I'm using can be found at > >>>><http://www.xfree86.org/~dawes/intel-85x/agpgart-85x.tar.gz>, in case > >>>>that makes a difference. > >>>> > >>>>David > >>> > >>>Ok. > >>> > >>>To simplify my environment, I did a fresh install of Red Hat 8.0. > >>> > >>>I then installed kernel 2.4.20-2.21 and XFree86-4.2.99.3-20030115, > >>>taken as RPM's from the RH81 'phoebe' beta, required for the i845 > >>> support. > >>> > >>>So, I now have a 'clean' setup which doesn't contain any of the pieces > >>>which I previously downloaded/built from various cvs repositories. > >>> > >>>On this machine (which has quite a few services running since it is a > >>>default 8.0 workstation-type install), it only takes 6 restart > >>> iterations of X before the system hangs. > >>> > >>>I (unfortunately) have 4 of these brand new GX60 machines. I see the > >>> exact same behavior on all of them. > >>> > >>>Therefore, I don't think the problem is specific to a particular system. > >>>By using the RH RPM's, also doesn't appear that the problem stems from > >>>something peculiar in my build environment. > >>> > >>>You tried on an i845G and can't reproduce, but you are using RH7.3? > >> > >>Yep, RH7.3 with its default kernel plus the agpgart driver referenced > >>above. Could you try your setup using that agpgart driver? That > >>might help narrow down if the problem lies there or elsewhere. I > >>don't see how the problem could be anywhere other than the kernel > >>or agpgart driver. > >> > >>David > > > > i replaced agpgart.o with one recompiled from agpgart-85x.tar.gz > > > > % uname -a > > Linux localhost.localdomain 2.4.20-2.21 #1 Wed Jan 15 20:31:35 EST 2003 > > i686 i686 i386 GNU/Linux > > > > % ls -l /lib/modules/2.4.20-2.21/kernel/drivers/char/agp > > -rw-r--r-- 1 root root 64920 Feb 14 12:21 agpgart.o > > -rw-r--r-- 1 root root 23738 Jan 15 18:38 agpgart.o.gz.bak > > > > > > I am still seeing the same behavior. > > Yeah, you replaced the file, but did the new module get installed? Run > lsmod as root: > > lsmod | grep agpgart > > Send in the results of that. > > Handling the easy stuff, :) > > Harold
yup. the module is autoloaded after I start X: % lsmod | head -3 Module Size Used by Not tainted i830 74304 1 agpgart 44264 11 (autoclean) -pat _______________________________________________ Devel mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/devel
