This is the mail archive of the
cygwin-developers
mailing list for the Cygwin project.
Cygwin slow on x64 systems - another slowdown
- From: Sagi Ben-Akiva <sagi at graphtech dot co dot il>
- To: cygwin-developers at cygwin dot com
- Date: Wed, 06 Oct 2010 14:43:04 +0200
- Subject: Cygwin slow on x64 systems - another slowdown
Hi,
Since my last email I kept investigating the slowdown issue on x64 systems and
found another slowdown.
I used the same test which prints the number of seconds since epoch and then
counts the amount of lines that were printed in a second.
Here are some of the results for my test machine which is installed with Windows
XP x64 :
Win Ver | CPU Mhz | DLL Ver | timestamp | Result |
------------------------+---------+----------+------------+--------+
CYGWIN_NT-5.2-WOW64 | 1808 | 1.5.21-2 | 1161592805 | 5 |
CYGWIN_NT-5.2-WOW64 | 1808 | 1.5.21-2 | 1161332425 | 12 |
CYGWIN_NT-5.2-WOW64 | 1808 | 1.5.19-4 | 1142338816 | 12 |
CYGWIN_NT-5.2-WOW64 | 1808 | 1.5.19-4 | 1142005204 | 31 |
I went over the changes between the 2 different revisions for cygwin 1.5.21-2
and it seems that one of the changes that were submitted on
'2006/10/22 14:57:43' is the cause for the slowdown.
I still don't know which one but I will keep investigating.
Thank you,
Sagi.
--
Sagi Ben-Akiva - sagi at graphtech dot co dot il
GraphTech Computer Systems