Cygwin slow on x64 systems - another slowdown

[Sagi Ben-Akiva]

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