[Info-vax] maximum number of connections per process

[JF Mezei]

laps_e wrote:
> as knowing the maximum number of connections per process on OpenVMS 62
> or 71  ?

each connection basically uses a channel.

At the SYSGEN level, there is CHANNELCNT parameter which specifies max
number of channels a process can have.

At the UAF level, /FILLM  determines how many opened files you can hace
at a time. The help on this also includes "netowrk logical links". Not
sure if this is for files accessed over decnet or whether it covers all
types of network/mailbox/SYS$ICC etc links.

Other UAF parameters that impact will be

BIOLM DIOLM which limit the number of concurrent IO requests

(so if you have 5000 chanels opened, each with a read QIO waiting to
complete, you use 5000 BIOLM. (note that some types of network links
will use DIOLM).

There is also TQELM which dictates how many "timeout" conditions you can
have at any one time. Network drivers on VMS doN't (unfortunatly)
support timeout detection, but code can implement it with event flags
with a synchronous QIO and a SETTIMR followed by a wait for event flag
which completed when either of the two complete.