On Thu, Nov 28, 2013 at 10:55:04AM -0500, Christopher Faylor wrote: >On Thu, Nov 28, 2013 at 02:08:13PM +0100, Corinna Vinschen wrote: >>On Nov 28 15:20, George M. Florendo wrote: >>> Hi, >>> >>> I run a non cygwin apache process named httpd.exe. Checking it with >>> "ps -W" shows a listing of the same process (with PID 4560 in this >>> case) twice. >>> >>> $ ps -W | grep httpd >>> 4560 1604 4560 5304 pty0 1000 09:55:21 >>> /home/georgeflorendo/wamp/bin/apache/Apache2.4.4/bin/httpd >>> 4560 1604 4560 5304 pty0 1000 09:55:21 >>> /home/georgeflorendo/wamp/bin/apache/Apache2.4.4/bin/httpd >>> 7508 0 0 7508 ? 0 15:09:50 >>> C:\cygwin\home\georgeflorendo\wamp\bin\apache\Apache2.4.4\bin\httpd.exe >>> >>> Doing a "ps aux" shows it only once. >>> >>> $ ps aux >>> PID PPID PGID WINPID TTY UID STIME COMMAND >>> 1340 7856 1340 5720 pty5 1000 15:13:50 /usr/bin/ps >>> 1604 4008 1604 2292 pty0 1000 09:17:01 /usr/bin/bash >>> 4008 1 4008 4008 ? 1000 09:17:00 /usr/bin/mintty >>> 4560 1604 4560 5304 pty0 1000 09:55:21 >>> /home/georgeflorendo/wamp/bin/apache/Apache2.4.4/bin/httpd >>> >>> <snipped> >>> >>> Is it correct that ps -W shows the same process twice? >> >>Not exactly but it could happen. Can you try the latest snapshot Cygwin >>DLL from http://cygwin.com/snapshots/ and see if it fixes the problem? > >I don't see anything in the ChangeLog which would affect this and I'd >be concerned if there was. > >There are scenarios where two different windows pids can be associated >with the same Cygwin pid. You should only see it when you do a "ps -W". > >So, AFAICT, the correct answer to the "Is it correct" is "Yes'.
Oops. Sorry. Just noticed that the pids weren't "different". There are still pathological situations where a pid can show up twice when doing a "ps -W". I've seen the issue before but fixing it would involve a global process lock which would slow down Cygwin for the benefit of a more accurate "ps -W". cgf -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
