Re: unannounced p10.gz fixes lockups
Dr. Werner Fink (werner@suse.de)
Mon, 22 Sep 1997 15:08:17 +0200
> The way I prefer to stess kernel is about 33% I/O, 33% processing in
> kernel (preferably not IO related), and 33% in user land.
>
> the first I usually get by 'dd if=/dev/hda5 of=/dev/null' hda5 is in my
> case 2 gb so it is usually enough (you can use 'hda' instead)
>
> the 2nd I usaully get by 'ping -f -s 1024 foo'. Note a) the '1024' is
> emprical value which is big enough to cause high load (kernel space), yet
> small enough not to make kernel lose packets ..Also I have a local network
> of two computesr so I prefer ping the machine being tested from the
> different machine (so that ping does not use cpu) and the network card is
> in use, and interrupts .. it can give you sometimes very interesting
> results.
>
> the 3rd, userland ... first i start netscape .. 4.03-pro preferably ..
> (still I need good idea for a busy web site w/ java and animated gifs )
> www.absnews.com seems be good choice ..
>
> then I usaully start 'make -j zImage' for 2.0.31-pre10, but that is enough
> I also have start, 'make World' for Xfree86-3.3.1, and 'make -j' for
> sss-1.2.20
>
> anything less than that will not kill kernel (even one make less). the
> result of above in mine case is usually that loads beings to skyrocket,
> plenty zobmies, and later differrent 'bad' things. [note it worked for me
> w/ pre-9 .. I still have to see what happens w/ pre-10]
Dont't forget writing on a loop device ...
Werner