Re: [PATCH] preempt-kernel on 2.4.19-pre2-ac2 bugfix

Mike Fedyk
2002-03-08T00:04:54Z

On Thu, Mar 07, 2002 at 11:46:17PM +0000, Alan Cox wrote:
> > I'm using 2.4.19-pre2-ac2-prmpt which is only patched with:
> > preempt-kernel-rml-2.4.19-pre2-ac2-3
> > And it looks like the VM accounting has been messed up.
>
> I don't support pre-empt. If you can duplicate that without pre-empt then
> its interesting, but not its not implausible
>
> > Committed AS: 366712 kB
> >
> > As you can see, it says I'm using 366MB (roughly) of ram, but I'm only about
> > 95mb into swap with 128mb of ram.
>
> That is the worst case swap usage based on the current allocations made by
> the system. My laptop for example isnt into swap at all but has a worst
> case of about 60Mb of swap.
>
> > Alan, do you want me to try without preempt, or do you already have any
> > other reports like this?
>
> No others, also knowing what it is actually running would be useful.
>

I'm running kde, mutt, mozilla, make -j5 kernel compile on a loop for the
last coupld days. I wasn't using this much address space with the same work
load yesterday, so that's why I think there is a bug there.

Although, I seem to recall running the same compile loop on a larger system
(2x666 mhz p3 512mb ram, vnc, no local Xserver) on a previous (2.4.18-rc-ac)
kernel without any other patches.

This machine is a 350 p2 with 128mb ram.

00:00.0 Host bridge: Intel Corp. 440BX/ZX - 82443BX/ZX Host bridge (rev 02)
00:01.0 PCI bridge: Intel Corp. 440BX/ZX - 82443BX/ZX AGP bridge (rev 02)
00:07.0 ISA bridge: Intel Corp. 82371AB PIIX4 ISA (rev 02)
00:07.1 IDE interface: Intel Corp. 82371AB PIIX4 IDE (rev 01)
00:07.2 USB Controller: Intel Corp. 82371AB PIIX4 USB (rev 01)
00:07.3 Bridge: Intel Corp. 82371AB PIIX4 ACPI (rev 02)
00:0c.0 Multimedia audio controller: Ensoniq ES1371 [AudioPCI-97] (rev 02)
00:0d.0 Ethernet controller: Intel Corp. 82557 [Ethernet Pro 100] (rev 08)
01:00.0 Display controller: Texas Instruments TVP4020 [Permedia 2] (rev 01)

Mike