Another thing even more mysterious:
A ping between A and B takes 3 ms average
When A is the ping initiator, a 
"while [ 1 ];do ls;done" on B makes the ping
take 0.3 ms, same thing if the load is done 
on the host!!

Believe it or not, uml works faster on a loaded host!

Note: I am not using the ska4 patch, would it change
the temporal reactions of the umls?

Regards
Vincent Perrier






On Tue, 2008-04-01 at 11:42 -0400, Jeff Dike wrote:
> On Mon, Mar 31, 2008 at 08:29:50PM +0200, vincent-perrier wrote:
> > 1 When uml A does a ping -f to B, the select of B is completely
> >   blocked, I can ssh into B and look around without feeling latency,
> >   ps -ef dumps very fast all processes, all seems normal in B 
> >   but top in B blocks and shows nothing, ping blocks too, but it
> >   is normal, because it also uses the select as timout.
> 
> Aha, so something about the ping flood is shutting off the timer
> somehow.  Let me take a look...
> 
>                     Jeff
> 


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