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RE: Information regarding problem when Windows cannot re-use PID numbers


FYI, I'm running cygwin on Win2K Pro and don't appear to have any memory
leaks, or any problems in general. My machine pretty much stays up 24/7 (I
do occasionally reboot out of force of habit.) I've got no personal FW, am
running AVG Anti Virus 6.0 and a pretty mixed bag of Windows services and
cygwin services. And I use Perl daily :) with no problems (albeit web server
cgi scripts.)

Here are some of my machine details:

$ uname -a
CYGWIN_NT-5.0 billhome 1.5.0(0.88/3/2) 2003-07-09 22:14 i686 unknown unknown
Cygwin

512K RAM, SP 3

$ ps -W

      PID    PPID    PGID     WINPID  TTY  UID    STIME COMMAND
        8       0       0          8    ?    0 14:24:48 *** unknown ***
      140       0       0        140    ?    0   Aug  6
\SystemRoot\System32\smss.exe
      188       0       0        188    ?    0   Aug  6
\??\C:\WINNT\system32\winlogon.exe
      216       0       0        216    ?    0   Aug  6
C:\WINNT\system32\services.exe
      228       0       0        228    ?    0   Aug  6
C:\WINNT\system32\lsass.exe
      480       0       0        480    ?    0   Aug  6
C:\WINNT\system32\svchost.exe
      516       0       0        516    ?    0   Aug  6
C:\WINNT\system32\spoolsv.exe
      580       0       0        580    ?    0   Aug  6
C:\PROGRA~1\Grisoft\AVG6\avgserv.exe
      592       0       0        592    ?    0   Aug  6
C:\WINNT\System32\drivers\CDAC11BA.EXE
      616       0       0        616    ?    0   Aug  6
C:\ControlIT\CtrITService.exe
      644       0       0        644    ?    0   Aug  6
C:\ControlIT\rp32u.exe
      652       1     652        652    ?   18   Aug  6 /usr/bin/cygrunsrv
      680       0       0        680    ?    0   Aug  6
C:\WINNT\System32\svchost.exe
      712       1     712        712    ?   18   Aug  6 /usr/bin/cygrunsrv
      744       0       0        744    ?    0   Aug  6
C:\cygwin\usr\sbin\cron.exe
      756       1     756        756    ?   18   Aug  6 /usr/sbin/inetd
      764       0       0        764    ?    0   Aug  6
C:\cygwin\usr\sbin\httpd.exe
      796     756     756        796    ?   18   Aug  6 /usr/sbin/inetd
      704       0       0        704    ?    0   Aug  6
C:\WINNT\LogWatNT.exe
      816       0       0        816    ?    0   Aug  6
C:\mysql\bin\mysqld.exe
      856       0       0        856    ?    0   Aug  6
C:\WINNT\system32\regsvc.exe
      872       0       0        872    ?    0   Aug  6
C:\WINNT\system32\MSTask.exe
      916       1     916        916    ?   18   Aug  6 /usr/bin/cygrunsrv
      980       0       0        980    ?    0   Aug  6
C:\WINNT\system32\stisvc.exe
      988       0       0        988    ?    0   Aug  6
C:\cygwin\usr\sbin\sshd.exe
     1040       0       0       1040    ?    0   Aug  6 C:\Program
Files\Executive Software\Undelete\UdServe.exe
     1064       0       0       1064    ?    0   Aug  6
C:\WINNT\System32\WBEM\WinMgmt.exe
     1096       0       0       1096    ?    0   Aug  6
C:\WINNT\system32\faxsvc.exe
     1352       0       0       1352    ?    0   Aug  6
C:\WINNT\Explorer.EXE
     1296     732     732       1296    ? 1005   Aug  6 /usr/sbin/httpd
     1356     732     732       1356    ? 1005   Aug  6 /usr/sbin/httpd
     1364     732     732       1364    ? 1005   Aug  6 /usr/sbin/httpd
     1384     732     732       1384    ? 1005   Aug  6 /usr/sbin/httpd
     1408     732     732       1408    ? 1005   Aug  6 /usr/sbin/httpd
     1552       0       0       1552    ?    0   Aug  6
C:\WINNT\System32\atiptaxx.exe
     1564       0       0       1564    ?    0   Aug  6 C:\Program
Files\Hewlett-Packard\HP Share-to-Web\hpgs2wnd.exe
     1588       0       0       1588    ?    0   Aug  6 C:\Program
Files\Microsoft Hardware\Mouse\point32.exe
     1608       0       0       1608    ?    0   Aug  6
C:\PROGRA~1\HEWLET~1\HPSHAR~1\hpgs2wnf.exe
     1616       0       0       1616    ?    0   Aug  6
C:\PROGRA~1\B'SCLI~1\Win2K\BSCLIP.exe
     1632       0       0       1632    ?    0   Aug  6
C:\PROGRA~1\Grisoft\AVG6\avgcc32.exe
     1644       0       0       1644    ?    0   Aug  6 C:\Program
Files\QuickTime\qttask.exe
     1656       0       0       1656    ?    0   Aug  6 C:\Program Files\ATI
Multimedia\main\ATISched.EXE
      688       0       0        688    ?    0   Aug  6 C:\Program
Files\Hewlett-Packard\Digital Imaging\bin\hpobnz08.exe
     1672       0       0       1672    ?    0   Aug  6 C:\Program
Files\Hewlett-Packard\Digital Imaging\bin\hpotdd01.exe
     1696       0       0       1696    ?    0   Aug  6 C:\Program
Files\Microsoft Office\Office\OSA.EXE
     1324       0       0       1324    ?    0   Aug  6 C:\Program
Files\QUICKENW\QWDLLS.EXE
     1676       0       0       1676    ?    0   Aug  6 C:\Program
Files\Microsoft Office\Office\1033\OLFSNT40.EXE
     1872       0       0       1872    ?    0   Aug  6
C:\mysql\bin\winmysqladmin.exe
     1896       0       0       1896    ?    0   Aug  6 C:\Program
Files\Hewlett-Packard\Digital Imaging\bin\hpoevm08.exe
      212       0       0        212    ?    0   Aug  6
C:\WINNT\System32\HPZipm12.exe
     1804       0       0       1804    ?    0   Aug  6 C:\Program
Files\Hewlett-Packard\Digital Imaging\Bin\hpoSTS08.exe
     1740     732     732       1740    ? 1005   Aug  6 /usr/sbin/httpd
     1724     732     732       1724    ? 1005   Aug  6 /usr/sbin/httpd
     1716     732     732       1716    ? 1005   Aug  6 /usr/sbin/httpd
     1964     732     732       1964    ? 1005   Aug  6 /usr/sbin/httpd
     2028     732     732       2028    ? 1005   Aug  6 /usr/sbin/httpd
     1956       0       0       1956    ?    0   Aug  7 C:\Program
Files\TextPad\TXTPAD32.EXE
     2120       0       0       2120    ?    0   Aug  7 C:\Program
Files\Internet Explorer\IEXPLORE.EXE
     2144       0       0       2144    ?    0   Aug  7 C:\Program
Files\PopupAdZero\PopupZeroTray.exe
     2508       1    2508       2508    0 1000   Aug  7 /usr/bin/rxvt
     2240       0       0       2240    ?    0   Aug  7
C:\cygwin\bin\bash.exe
     2084       0       0       2084    ?    0   Aug  7 C:\Program
Files\Internet Explorer\IEXPLORE.EXE
     2388       0       0       2388    ?    0   Aug  7 C:\Program
Files\mysqlcc\mysqlcc.exe
      540       0       0        540    ?    0   Aug  7 C:\Program
Files\Internet Explorer\IEXPLORE.EXE
     2340       0       0       2340    ?    0   Aug  7 C:\Program
Files\Microsoft Office\Office\FRONTPG.EXE
     2496       0       0       2496    ?    0   Aug  8 C:\Program
Files\Microsoft Office\Office\OUTLOOK.EXE
     2560       0       0       2560    ?    0   Aug  8 C:\Program
Files\Microsoft Office\Office\1033\wfxmsrvr.exe
     1936       0       0       1936    ?    0   Aug  8
C:\PROGRA~1\MICROS~3\Office\1033\OLFMOD32.EXE
     2568       0       0       2568    ?    0   Aug  8 C:\Program
Files\Internet Explorer\IEXPLORE.EXE
     2680       1    2680       2680    2 1000 13:28:54 /usr/bin/rxvt
     2512       0       0       2512    ?    0 13:28:54
C:\cygwin\bin\bash.exe
     2632       0       0       2632    ?    0 13:29:02
C:\cygwin\bin\perl.exe
     2128       0       0       2128    ?    0 13:29:02 C:\cygwin\bin\sh.exe
I    2132    2396    2664       2132    3 1000 13:29:02 /usr/bin/less
     2176    2012    2176       2492    1 1000 13:54:47 /usr/bin/ps
     2492       0       0       2492    ?    0 13:54:48 C:\cygwin\bin\ps.exe

I hope this might help.


Bill

> On Sat, Aug 09, 2003 at 07:40:57PM +0200, Yorick Koster wrote:
> >Hello list,
> >
> >Rogier & I have been busy trying to isolate the memory leak problem we
> >have encountered on Win2k machines. A lot of people on this list have
> >suggested this is in fact a Win2k problem. We have indeed verified this
> >is indeed not a CygWin issue, but I am not totally convinced this is a
> >Windows problem. The following command can be used to reproduce the leak:
> >
> >FOR /L %a IN (1,1,65535) DO echo exit | cmd
> >
> >By using the task manager, you can notice an increase in the use of
> >memory. symptoms:
> >- the available free physical memory reduces with a constant interval,
> >this will continue untill all physical memory is used
> >- apparently Windows can not swap this space, when it is no longer
> >possible to start a new command shell, there is still lots of swap space
> >available
> >- the memory is never freed, not even when a user logs off
> >- starting more applications will eventually cause Windows to crash
> >
> >The reason why I am not convinced this is a Windows problem, is because
> >of the fact that I have tested this on several Win2k machines, some of
> >them suffer from this bug while others do not. These machines are
> >identical and are installed using the same image. My guess was that it
> >is related to same 3rd party services, likely antivirus and/or personal
> >firewall software.
>
> The above would certainly rule out cygwin then since there isn't
> any cygwin
> component.
>
> Does RAMpage "fix" this problem, assuming you can even run it?  If so,
> that would indicate a memory fragmentation problem rather than a lack
> of memory problem.
>
> cgf
>
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