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Re: Slow versus fast VAXen



On 21/04/14 2:31 PM, Anders Magnusson wrote:
John Klos skrev 2014-04-21 19:32:
One more thing - what is different between the 4000/30 and the 4000/60
with regards to timing? Both are running netbsd-6, but the 4000/30 is
showing ping times in increments of 10 ms:
Hm, it seems to be a bunch of things that may interact here.

Some VAXen do not have a fine-granularity timer, so the lowest time
difference is 10ms.  MV2 is one, and obviously the 4000/30.

Hm, my MVII reports down to about 3ms, which is, I believe, approximately the context switch time.

--Toby



The 4000/60 has a better timer, but something seems to be wrong, either
in the use of the timer, or somewhere else.  The near-200ms delay may be
a hint on what to search for.

-- Ragge





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