[Info-vax] $SETIMR granularity

Cap Taillat captaillat at gmail.com
Sat Nov 5 12:04:01 EDT 2011


> Does $SETIMR have the same (1/100 second) granularity on Itanium and
> Alpha as it does on the VAX?  Or is it 1/1024 second due to the clock speed?

Sort of.  Earlier you could set the clock to interrupt at up to 1K/sec
(on an NVAX) and have your timer entries delivered, but with a later
change, they were all queued to be released only on 100 MS
boundaries.  If you can get better that 1/100th granularity (from user
code) now, I'd like to know.

Gib



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