[plt-scheme] Re: some progress in identifying cause of DrScheme file explorer intermittent freezing problem on Japanese version of Windows XP Pro, Service Pack 3

From: Eli Barzilay (eli at barzilay.org)
Date: Thu Jun 4 06:33:55 EDT 2009

On Jun  4, Benjamin L.Russell wrote:
> On Thu, 4 Jun 2009 06:05:53 -0400, Eli Barzilay
> Here is what the trace showed just before the trace was stopped:
> [...]
> Apparently, a call to "ReadProcessMemory(2f0, 252618, 1abbcf4c, 50,
> ...) = 1" is being repeatedly executed, during which time the
> DrScheme.exe process freezes in the "Select a file" dialog box.
> Mysteriously, after about 5 seconds, the repetition stops, and the
> user is able to navigate freely for about 10 seconds until the next
> freeze, which again lasts for about 5 seconds.

Yes, that's *much* better than a description of how it gets stuck --
for example, it's unlikely that the cause is a networked filesystem.
(And something that looks strange to me is that the address that is
read is low.)

> Would you like me to put up the entire trace file on some file server
> so that you can download it?

At this point I'll let Matthew see if there's anything that looks
suspicious and/or see if a complete log will be helpful.  One thing
that might help as well is adding timestamps or something similar to
the log so it is visible exactly where things get stuck.  (But I'd
wait for Matthew's input before putting up a huge log file.)

          ((lambda (x) (x x)) (lambda (x) (x x)))          Eli Barzilay:
                  http://www.barzilay.org/                 Maze is Life!

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