Re: Ancient OT History Question
Re: Ancient OT History Question
- Subject: Re: Ancient OT History Question
- From: Quinn <email@hidden>
- Date: Wed, 20 Feb 2002 10:32:36 +0000
At 13:38 -0800 19/2/02, Scott Burgess wrote:
It seems to run okay on 8.1 (slower, of course),
but it seems to lock out system calls, including
my app's WaitNextEvent and also OTScheduleSystemTask()
calls. Can anyone remember having any problems
like this?
What hardware are you running on? If you've dug up an old machine to
run 8.1 on, you may be being bit by non-network related problems.
Specifically, Gazzelle-based machines (Power Mac 55xx, 65xx, 20th
Anniversary) have problems doing async I/O to the internal ATA drive
with VM on; on such a machine an async I/O is actually handled
synchronously, which works but can produce exactly the symptoms you
described.
If that isn't it, try instrumenting your interrupt time code
(possibly using the Instrumentation SDK) to see how long each of the
async calls are taking to return and how long before their completion
routines are called.
S+E
--
Quinn "The Eskimo!" <
http://www.apple.com/developer/>
Apple Developer Technical Support * Networking, Communications, Hardware
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