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echo: artware
to: All
from: Tobias Ernst
date: 1999-01-05 11:34:42
subject: Patches and Performance

Hallo All!

Some of you recently mentioned that Timed with our Y2K patch applied seems
to be more slow than the Timed without the patch. This is interesting. It
is true that the patch leads to more frequent procedure calls / interrupt
calls at some points, but I don't think the performance impact should be
visible. Especially, it should not be visible in the user interface
performance ...

Personally, I am, among others, running Timed/DOS on an 80286, and even
there, I could not observe any performance impact after applying the patch.

So I think that if on your system the patched Timed is more slow than the
unpatched one, there must be another reason for it. I suspect it is some
sort of interaction between the interrupt vectors I have used and the
"operating system" from Redmond ...

Those persons that observerd a *visible* performance impact, could you
please report what hardware, what operating system and what version of
Timed (DOS, /386, /2) you are using.

Viele Gre,
Tobias

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