> Doc's recent question re: CHANNELCNT have brought up a question I've been
> meaning to ask.
> SYSGEN sez:
> $ mcr sysgen help sys chann
> CHANNELCNT specifies the number of permanent I/O channels
> available to the system.
> This special parameter is used by Compaq and is subject to
> change. Do not change this parameter unless Compaq recommends
> that you do so.
> Aside from changing CHANNELCNT under recommendation from hp or a third-party
> software vendor, is there a good reason to leave CHANNELCNT alone? Is this
> warning a remnant from an earlier time, or is it still valid?
> Bradford J. Hamilton "All opinions are my own"
> bMradAhamiPltSon-at-atMtAbi.cPoSm "Lose the MAPS, and replace
Well, it's a maximum. There's no rule that says the system has to use as many
channels as it's allowed to. The individual processes are limited by the SYSUAF
data. Setting CHANNELCNT to some ridiculously high value should not hurt a
system, however, it might wreck havoc with AUTOGEN.
If you think there is a problem, collect FEEDBACK often. The report will tell
you the highest usage of many things. AUTOGEN should bump the parameter if it
sees any need to do so.
Disclaimer, I don't know how AUTOGEN uses and modifies CHANNELCNT, the above is
just from experience, not intimate knowledge of AUTOGEN.
I have seen advice, from DEC, to set CHANNELCNT very high, 64,000 I believe, to
allow a BACKUP user account to make maximum useage of resources.
David Froble Tel: 724-529-0450
Dave Froble Enterprises, Inc. Fax: 724-529-0596
T-Soft, Inc. 170 Grimplin Road Vanderbilt, PA 15486