RE: Kernel freeze under heavy (transmit) load

From: Devaney, Matthew (
Date: 2002-06-13 09:02:20 UTC

There was a post on here a few days back that suggested using a vanilla-kernel (as opposed to the redhat / Mandrake mod'd ones). Given I had a bit of free time yesterday I tried that with a 2.4.18 downloaded from, and so far I've been able to copy several large files at some 50+Kbytes a sec across the wlan and it hasn't crashed anything yet.

In both cases SMP was enabled, as was IO-APIC.

Colin - just out of interest, is your kernel a mod'd one? Or are you seeing the same behaviour with a clean kernel?


>-----Original Message-----
>From: Colin Palmer []
>Sent: 12 June 2002 22:22
>To: ''
>Subject: RE: Kernel freeze under heavy (transmit) load
>On Tue, 11 Jun 2002, Devaney, Matthew wrote:
>> Hi,
>> I've been getting the same problem with the 2002-05-19 driver .. In
>> previous versions the wlan card would just suddenly stop
>> packets under load and I had to reset the driver by hand to
>get it working
>> again - now it works under load most of the time but will
>> freeze the system. (At least I think it's the wlan.. having
>tried narrowing
>> it down that's what it looks like so-far)
>This may or may not be the same problem, but I can make a Prism2.5 PCI
>card hang the system consistently if the kernel (2.4.18) is
>compiled with
>SMP support. Wireless clients can connect fine, and ping ithe AP fine,
>but as soon as I start a large file transfer the host system freezes.
>Recompiling without SMP or IO-APIC enabled seems to fix it.
>Colin Palmer -- --
>Systems Engineer -- [One Short Of A Llama]


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