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Date: Fri, 21 Jun 2002 21:42:56 -0400
From: Alan Dobkin <Alan AT ADobkin DOT Net>
To: Cygwin <cygwin AT cygwin DOT com>
Subject: Cygwin 1.3.11 DLL Slowness After 6/10/2002
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All cygwin operations have a significant delay on my system (Win2K-SP2) 
when using any of the snapshots after 6/10, including the current test 
1.3.11 release distributed with setup.  Reverting back to the 1.3.10 
release or even the 6/10 snapshot immediately corrects the problem.  

For example, opening a bash prompt (i.e. using cygwin.bat in a Win2K 
command shell), which normally takes only 3-4 seconds, now takes from 
15-30 seconds (up to 10 times longer than before).  Nothing else has 
changed on my system other than the cygwin DLL version.

Here is the output of the time command with different DLL versions:

bash-2.05a$ time uname -srvm
CYGWIN_NT-5.0 1.3.10(0.51/3/2) 2002-02-25 11:14 i686

real    0m0.341s
user    0m0.020s
sys     0m0.020s

bash-2.05a$ time uname -srvm
CYGWIN_NT-5.0 1.3.11s(0.53/3/2) 20020610 22:31:23 i686

real    0m0.344s
user    0m0.020s
sys     0m0.010s

bash-2.05a$ time uname -srvm
CYGWIN_NT-5.0 1.3.11s(0.53/3/2) 20020614 20:30:02 i686

real    0m5.360s
user    0m0.040s
sys     0m0.010s

bash-2.05a$ time uname -srvm
CYGWIN_NT-5.0 1.3.11s(0.53/3/2) 20020615 18:02:33 i686

real    0m5.209s
user    0m0.030s
sys     0m0.040s

bash-2.05a$ time uname -srvm
CYGWIN_NT-5.0 1.3.11s(0.53/3/2) 20020616 19:40:25 i686

real    0m2.941s
user    0m0.030s
sys     0m0.050s

bash-2.05a$ time uname -srvm
CYGWIN_NT-5.0 1.3.11s(0.53/3/2) 20020618 20:18:00 i686

real    0m3.016s
user    0m0.040s
sys     0m0.040s

bash-2.05a$ time uname -srvm
CYGWIN_NT-5.0 1.3.11s(0.53/3/2) 20020619 20:43:50 i686

real    0m2.783s
user    0m0.020s
sys     0m0.010s

bash-2.05a$ time uname -srvm
CYGWIN_NT-5.0 1.3.11(0.53/3/2) 2002-06-19 21:00 i686

real    0m2.870s
user    0m0.040s
sys     0m0.000s

bash-2.05a$ time uname -srvm
CYGWIN_NT-5.0 1.3.11s(0.53/3/2) 20020621 01:37:56 i686

real    0m2.975s
user    0m0.030s
sys     0m0.030s

As you can see, the time increases significantly as of the 6/14 snapshot, 
then decreases by almost half on 6/16, but it is still almost ten times 
longer than with the 6/10 snapshot and the current release.

Let me know if it would be helpful for me to run additional tests, etc. 
to narrow down the source of the problem.

Alan

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