Our FMS2 stopped responding to incoming requests today. Looking in all the
edge.*.log files, they are flooded with this line:

Assert failed in /util/TCProcess.cpp line 609

any ideas what this is about? I had to restart FMS to get it to accept
connections again.

Linux: 2.6.17-1.2142_FC4smp

It happens sometimes on our FMS too. So it's certainly not some specific error
in your application(s). Some ppl recommended to set the application variable
"reuse" from true to false (check your xml configfiles) but in our case it
didn't help us a bit.

Some suggested that the amount of tcp-connections / sockets on the server
would be "full" but that would need about 60.000+ connections and guess what ;
netstat didn't show more than 200 at a time (in our case).

Does you app use a lot of external scripting (e.g. calling external xml-files
or scripts?) Do you clear those outgoing objects ? You can by issuing "obj =
null;" and then "delete obj;" but be warned for circular references (closures)
; in those cases you think you deleted an object but in fact it's still in
memory and -maybe- reserving an tcp-slot so in the end the FMS might run out of
free sockets. This is however more a conspiracy-plot-theory than scientific
based reverse-engineering :)

yes. our apps are heavy use with AMFPHP to handle all our database<->flash
interaction. But we run an apache process on each FMS server for localhost
access only. Meaning the local FMS apps contact localhost to access/instance
AMFPHP.

It was my understanding that this connection gets instanced only once when the
app loads. Am I wrong?

thanks.

Your FMS will create a connection when it's ordered to do so.

Unfortunately sometimes connections can timeout and stay there forever ;
keeping valuable resources busy. In my humble opinion FMS is leaking memory and
connections in many parts of perfectly correct user-code. To prevent FMS from
leaking you should make sure you clearup, close and delete objects that are
related to external scripts as often as possible. This will improve the
stability of your server(s).