[plug] kernel 2.4 enet+disk weirdness

[Russell Steicke]

On Tue, Aug 13, 2002 at 05:11:04PM +0800, Craig Ringer wrote:
> hi all
> I'm currently scp'ing my mp3/ogg collection from my PC to my laptop and 
> I've noticed something rather interesting. It is now running kernel 2.4 
> after a nuke-and-reinstall session, and it is failing to symltaneously 
> write to disk and recieve over ethernet.  Under kernel 2.2 it was 
> happily streaming data from ethernet direct to disk but now it is doing 
> some ugly alternation stuff and taking much longer to copy.

Check the output of "hdparm /dev/hda" and see if unmaskirq is on or off.  
If it's off, read the hdparm man page, particularly the warnings about 
reliability with the -u flag, and then if you're still game, try setting 
the unmaskirq flag with "hdparm -u1 /dev/hda".