I'm curious to see how ours would react under that setting hehe. Next
time I'm in the lab I'll try and fire it up for kicks and see what
happens.

Stace

-----Original Message-----
From: Alan Ford [mailto:[EMAIL PROTECTED] 
Sent: Monday, August 11, 2003 3:19 PM
To: CF-Talk
Subject: CFMX performance issue

>but I think at
>the very least it shows that 200 simultaneous threads is massive
overkill.

Ok, already :-)

Forget 200 - I've reset it to 96.

Now, to everyone who is saying that 96 is too high my own experience of
trying to keep the site running smoothly at all costs is that an SRR of
96 is *way* better than 20. This is experience of coping with overloads
on a daily basis for 3 weeks or so.

It does not reduce the number of times the number of running threads
grows (nor does it increase it), but it does reduce dramatically the
number of times that cfmx has to queue threads and the recovery when it
is not queuing is much faster than when it is. With SRR set to 20 it was
not unusual to have cfmx queuing 20 times a day or more. Almost every
timed it queued I had to intervene. Now 2 or 3 is the norm, and the 17
other times when the thread count grows it recovers quickly without
queuing. I now have to intervene once or twice a day (though
unfortunately I still have to watch it like a hawk!). (By intervene I
mean restrict the max number of connections in IIS down to about 300.
cfmx recovers, I reset the connections to unlimited).

This business about 4 threads per processor is from CF 4 days. Surely
the calculation is different with cfmx, simply because it's a completely
different engine?

Alan

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