Sounds like a win 2K issue
I can only hope that windows vista has better control over
processor/memory handling
We shall see!
Jim
Arnold wrote:
Search "disable dual core" for a lot of stuff on the subject. Seems
you're not the only one to run into problems. Frankly, dual-core is one
advance that I'd stay a mile away from until I'm convinced it's been
proven over time. I worked with it mainframe land, and recall fixing a
bug that required clearing the processor's instruction cache. Not that
we as app developers should every have to worry about such things, but
the whole thing involves really tricky timing considerations that I
would have thought impossible for Windows to deal with (message-driven
vs interrupt-driven). Obviously they've got it to work - most of the
time - but I really wonder if it can be made to work reliably ALL of the
time.
Bill
I've a problem I THINK might be a dual-core issue. I've read
the "buffer
overrun" threads.
Environment: A new dual-core 2 gig machine at a client site.
Runs Win2K
SP4, and VFP9 SP1.
I converted an application from VFP tables to mySQL, and have
a VFP utility
that loads the mySQL tables from the VFP tables to get things
started. Uses
SQL passthough. Uses the mySQL ODBC 3.51 driver.
I have no problems at all on my development machine; there
are no problems
if I run the upload on another machine on the network at the
client site.
However, on the dual-core machine, the SQL INSERTs that I use
to load the
tables fail sometimes with SQL SYNTAX errors. mySQL complains
about there
being an error in the SQL statement, and the error message it
sends back
shows a corrupted INSERT statement. It does not happen on the
same record
each time - it is random. And if I simply re-issue the
INSERT, it works. I
modified the program to do retries, and I can upload the
tables this way.
On a 15000 record table, I might get 30 errors that work when retried.
I did some other tests - I created a remote view, and then
updated the
table this way - no problems - perhaps VFP is doing retries.
I am limiting memory via SYS(3050) to around 24 meg, just as a test.
On ONE occasion I got the dreaded "Buffer overrun" message from the C
library. I also got this message once on my home machine.
However, both
machines are running SP1, which supposedly fixes this error.
Any thoughts? Is it possible to disable part of a dual-core
machine via the
BIOS? (This is an ACER machine, which I think uses an AMD
chip set). That
would be the proof.
Thoughts, anyone? I have no idea on how to solve this one.
Many thanks
Larry Bradley
Orleans (Ottawa), Ontario, CANADA
[excessive quoting removed by server]
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