System crashing when swap hits 25%

[Simon Slater]

On Mon, 2008-03-10 at 21:01 -0400, Chris Snook wrote:
> >> sysrq-m and sysrq-t data out of the system.  You'll want to set 
> >> kernel.sysrq=1 first. 
> > Where do I find these?
> > 
> 
> There are two interfaces.  One is the /proc/sys directory, and the
> other 
> is sysctl.  If you want to set something with sysctl, the easy way is
> to 
> add a line in sysctl.conf (for example: vm.overcommit_memory=2) and
> then 
> run sysctl -p to process the config file again.
> 
	Have just been through a few man pages.
Temporarily, the command sysctl vm.overcommit_memory=2 would do the job?
What does the value '2' signify?
What do sysrq-m and sysrq-t do?  I haven't found them yet.
Oh, currently vm.overcommit_memory=0 and kernel.sysrq=0.

-- 
Regards
Simon