slow windows foreground operation after installing cygwin-1.5.17-1

[Charles D. Russell]

The new cygwin1.dll (1.5.17-1) now lets me run fortran programs with large
static arrays that occupy most of the available memory, but it is no longer
possible to run Windows programs (MSWord or even Windows Explorer)
in the foreground while a big math problem is chugging along in the
background. (Windows XP SP2). I did not notice such a problem when using 
the old fudge   
of changing the stack size, when using -mno-cygwin, or even when using the
recent development snapshot cygwin1-20050510.dll. (Though I cannot be
completely certain that I ever tried running Windows programs
concurrently with a big job.)

The foreground Windows process appears not to get enough priority in the
time sharing allocation to function at a usable speed.  On the other 
hand, there
is no evident problem with foreground cygwin processes. Using
vim in a second cygwin window, I am typing this note in the foreground 
with no
problems.

In any event, the new dll beats being unable to run big fortran programs at
all.


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