[Info-vax] HIBertanting DECthreads process accrues CPU time.

Bob Koehler koehler at eisner.nospam.encompasserve.org
Mon Feb 14 08:21:18 EST 2011


In article <422e7e27-0a8a-45a6-a721-b6cf3addedb6 at u17g2000yqe.googlegroups.com>, John Wallace <johnwallace4 at yahoo.co.uk> writes:
> 
> I nowadays have only the vaguest of memories of how CPU time is
> accounted for on VMS, but I do recollect that it uses time-based
> sampling (eg a chunk was added to the active task's total every
> scheduler tick???) and is therefore potentially a little bit suspect
> if code wanted to play deliberately silly games.

   For the uninitiated:  you have to be carefull how you watch, too,
   because getting information about a process often means triggering
   ASTs that run in that process' context.




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