Re: 2.5.2-pre1 dbench 32 hangs in vmstat "b" state

Jens Axboe
2001-12-24T17:03:18Z

On Mon, Dec 24 2001, rwhron@earthlink.net wrote:
> On Mon, Dec 24, 2001 at 03:03:37PM +0100, Jens Axboe wrote:
> > On Fri, Dec 21 2001, rwhron@earthlink.net wrote:
> > What IDE controller are you using? The two other reports so far have
> > been with VIA, maybe that's a clue.
>
> I do have one of the perhaps buggier VIA chipsets.
>
> 00:00.0 Host bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133] (rev 03)
> 00:01.0 PCI bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133 AGP]
> 00:07.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South] (rev 40)
> 00:07.1 IDE interface: VIA Technologies, Inc. Bus Master IDE (rev 06)
> 00:07.4 Bridge: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] (rev 40)
> 00:0d.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139 (rev 10)
> 00:0f.0 Multimedia audio controller: C-Media Electronics Inc CM8738 (rev 10)
> 01:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G400 AGP (rev 04)
>
> 00:07.1 IDE interface: VIA Technologies, Inc. Bus Master IDE (rev 06) (prog-if 8a [Master SecP PriP])
> Subsystem: VIA Technologies, Inc. Bus Master IDE
> Flags: bus master, medium devsel, latency 32
> I/O ports at d000 [size=16]
> Capabilities: <available only to root>
>
> It's been reliable for a long time, but it wouldn't compile an Athlon
> optimized kernel until 2.4.1x. (Kernel would Oops at boot time unless
> compiled with CONFIG_M586=y)

Ok noted

> > Anyways, could you please reproduce with this applied?
> >
> > --
> > Jens Axboe
>
> With the patch, it still hangs on this system. I recompiled with
> CONFIG_NOHIGHMEM=y and CONFIG_M586=y, but that ended up with all processes
> in "b" state during dbench 32 too.

I would suspect that, do you get any kernel messages?

> I tried unpatched 2.5.2-pre1 on a k6-2. dbench 32 hung similarly with
> 32 in "b", bo and bi = 0, and id = 100. That machine is ill now and can't
> find "init" when booting, boot single, or boot init=/bin/bash.

Please send ps -eo cmd,wchan info for a hung machine.

--
Jens Axboe