[Tech] The effect of slow nodes

[Jano]

toad wrote:

> What's the difference between search failure, RNF and DNF? Search
> failure is a timeout? If so, this is with throttling? There shouldn't be
> _that_ many timeouts...

I think two messages I sent yesterday have been lost, at least I don't see
them through Gmane.

This run is without any throttling mechanism. In one of the lost messages it
seemed that the collapse point was in the 6-8 range. About the failure
meanings, I leave this to Michael to answer.

I'll repost the messages now.

> 
> On Wed, Dec 06, 2006 at 09:26:01PM +0100, Jano wrote:
>> > Jano wrote:
>> > 
>> >> About the purple line: these simulations die by OOM errors in the
>> >> simulator. In particular, I guess you're concerned by the drop. I'd
>> >> not give it any meaning, it's almost surely a partial execution. I'll
>> >> take care to remove these wrong results next time.
>> >> 
>> >> Nonetheless, I'm going to check it and come back to confirm.
>> > 
>> > Mmmmm I was wrong. Some of these simulations are ending properly and
>> > most request are failing with RNF. Even the ones dying because of OOM
>> > show prevalence of RNF. I'm going to run a more detailed series in the
>> > critical range where absence of balancing collapses.
>> 
>> This is yet another run in the range 6..8/0.2, now without OOMs...