Mail Archives: cygwin/2002/08/19/02:50:09
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I've been having a problem running out of process IDs and wrote a small
C program to test if it happens on other systems. On my system I use up
2000 PIDs in ~500-550 forks. This seems like a lot. Could others run
this and see if they see the same? Please drop me or the list a line
with how it runs on your machine.
I'm on Win XP home with cygwin 1.3.12. My cygcheck output is attached
as well as the short program.
Thanks,
Nils.
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Cygwin Win95/NT Configuration Diagnostics
Current System Time: Fri Aug 02 11:23:41 2002
Windows XP Home Edition Ver 5.1 Build 2600
Path: C:\cygwin\usr\local\bin
C:\cygwin\bin
C:\cygwin\bin
c:\WINDOWS\system32
c:\WINDOWS
c:\WINDOWS\System32\Wbem
C:\cygwin\bin\mh
SysDir: C:\WINDOWS\System32
WinDir: C:\WINDOWS
HOME = `C:\cygwin\home\NilsBoeffel'
MAKE_MODE = `unix'
PWD = `/home/NilsBoeffel'
USER = `NilsBoeffel'
ALLUSERSPROFILE = `C:\Documents and Settings\All Users'
APPDATA = `C:\Documents and Settings\Nils Boeffel\Application Data'
CLIENTNAME = `Console'
COLORFGBG = `10;default;0'
COLORTERM = `rxvt-xpm'
COMMONPROGRAMFILES = `C:\Program Files\Common Files'
COMPUTERNAME = `KAROO'
COMSPEC = `C:\WINDOWS\system32\cmd.exe'
DISPLAY = `:0'
EDITOR = `vim'
HOMEDRIVE = `C:'
HOMEPATH = `\Documents and Settings\Nils Boeffel'
LOGONSERVER = `\\KAROO'
MAILHOST = `debian.org'
MAILUSER = `lohner'
MANPATH = `:/usr/ssl/man'
NUMBER_OF_PROCESSORS = `1'
OS = `Windows_NT'
PATHEXT = `.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH'
PROCESSOR_ARCHITECTURE = `x86'
PROCESSOR_IDENTIFIER = `x86 Family 6 Model 11 Stepping 1, GenuineIntel'
PROCESSOR_LEVEL = `6'
PROCESSOR_REVISION = `0b01'
PROGRAMFILES = `C:\Program Files'
PS1 = `\w> '
SESSIONNAME = `Console'
SHLVL = `1'
SYSTEMDRIVE = `C:'
SYSTEMROOT = `C:\WINDOWS'
TEMP = `c:\DOCUME~1\NILSBO~1\LOCALS~1\Temp'
TERM = `xterm'
TMP = `c:\DOCUME~1\NILSBO~1\LOCALS~1\Temp'
USERDOMAIN = `KAROO'
USERNAME = `Nils Boeffel'
USERPROFILE = `C:\Documents and Settings\Nils Boeffel'
VISUAL = `vim'
WINDIR = `C:\WINDOWS'
WINDOWID = `167848544'
_ = `/usr/bin/cygcheck'
HKEY_CURRENT_USER\Software\Cygnus Solutions
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2
(default) = `/cygdrive'
cygdrive flags = 0x00000022
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\Program Options
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\MenuOrder\Start Menu\Programs\Cygnus Solutions
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2
(default) = `/cygdrive'
cygdrive flags = 0x00000022
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/
(default) = `C:/cygwin'
flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/bin
(default) = `C:/cygwin/bin'
flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/lib
(default) = `C:/cygwin/lib'
flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/X11R6/lib/X11/fonts
(default) = `C:\cygwin\usr\X11R6\lib\X11\fonts'
flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\Program Options
c: hd NTFS 28615Mb 60% CP CS UN PA FC
d: cd N/A N/A
e: cd N/A N/A
. /cygdrive user binmode,cygdrive
C:/cygwin / system binmode
C:/cygwin/bin /usr/bin system binmode
C:/cygwin/lib /usr/lib system binmode
C:\cygwin\usr\X11R6\lib\X11\fonts /usr/X11R6/lib/X11/fonts system binmode
. /cygdrive user binmode,cygdrive
Found: C:\cygwin\bin\bash.exe
Found: C:\cygwin\bin\cat.exe
Found: C:\cygwin\bin\cpp.exe
Found: C:\cygwin\bin\find.exe
Found: C:\cygwin\bin\gcc.exe
Found: C:\cygwin\bin\gdb.exe
Found: C:\cygwin\bin\ld.exe
Found: C:\cygwin\bin\ls.exe
Found: C:\cygwin\bin\make.exe
Found: C:\cygwin\bin\sh.exe
58k 2002/05/07 C:\cygwin\bin\cygbz2-1.dll - os=4.0 img=1.0 sys=4.0
"cygbz2-1.dll" v0.0 ts=2002/5/7 14:33
621k 2002/05/17 C:\cygwin\bin\cygcrypto.dll - os=4.0 img=1.0 sys=4.0
"cygcrypto.dll" v0.0 ts=2002/5/17 20:24
45k 2001/04/25 C:\cygwin\bin\cygform5.dll - os=4.0 img=1.0 sys=4.0
"cygform5.dll" v0.0 ts=2001/4/25 13:28
35k 2002/01/09 C:\cygwin\bin\cygform6.dll - os=4.0 img=1.0 sys=4.0
"cygform6.dll" v0.0 ts=2002/1/9 14:03
19k 2002/02/20 C:\cygwin\bin\cyggdbm.dll - os=4.0 img=1.0 sys=4.0
"cyggdbm.dll" v0.0 ts=2002/2/20 11:05
20k 2002/07/17 C:\cygwin\bin\cyghistory5.dll - os=4.0 img=1.0 sys=4.0
"cyghistory5.dll" v0.0 ts=2002/7/18 5:18
929k 2002/06/24 C:\cygwin\bin\cygiconv-2.dll - os=4.0 img=1.0 sys=4.0
"cygiconv-2.dll" v0.0 ts=2002/6/25 2:24
22k 2001/12/13 C:\cygwin\bin\cygintl-1.dll - os=4.0 img=1.0 sys=4.0
"cygintl-1.dll" v0.0 ts=2001/12/13 17:28
23k 2002/06/24 C:\cygwin\bin\cygintl-2.dll - os=4.0 img=1.0 sys=4.0
"cygintl-2.dll" v0.0 ts=2002/6/24 12:54
21k 2001/06/20 C:\cygwin\bin\cygintl.dll - os=4.0 img=1.0 sys=4.0
"cygintl.dll" v0.0 ts=2001/6/21 1:09
119k 2002/02/09 C:\cygwin\bin\cygjpeg6b.dll - os=4.0 img=1.0 sys=4.0
"cygjpeg6b.dll" v0.0 ts=2002/2/9 13:19
26k 2001/04/25 C:\cygwin\bin\cygmenu5.dll - os=4.0 img=1.0 sys=4.0
"cygmenu5.dll" v0.0 ts=2001/4/25 13:27
20k 2002/01/09 C:\cygwin\bin\cygmenu6.dll - os=4.0 img=1.0 sys=4.0
"cygmenu6.dll" v0.0 ts=2002/1/9 14:03
156k 2001/04/25 C:\cygwin\bin\cygncurses++5.dll - os=4.0 img=1.0 sys=4.0
"cygncurses++5.dll" v0.0 ts=2001/4/25 13:29
175k 2002/01/09 C:\cygwin\bin\cygncurses++6.dll - os=4.0 img=1.0 sys=4.0
"cygncurses++6.dll" v0.0 ts=2002/1/9 14:03
226k 2001/04/25 C:\cygwin\bin\cygncurses5.dll - os=4.0 img=1.0 sys=4.0
"cygncurses5.dll" v0.0 ts=2001/4/25 13:17
202k 2002/01/09 C:\cygwin\bin\cygncurses6.dll - os=4.0 img=1.0 sys=4.0
"cygncurses6.dll" v0.0 ts=2002/1/9 14:03
15k 2001/04/25 C:\cygwin\bin\cygpanel5.dll - os=4.0 img=1.0 sys=4.0
"cygpanel5.dll" v0.0 ts=2001/4/25 13:27
12k 2002/01/09 C:\cygwin\bin\cygpanel6.dll - os=4.0 img=1.0 sys=4.0
"cygpanel6.dll" v0.0 ts=2002/1/9 14:03
40k 2001/11/21 C:\cygwin\bin\cygpcre.dll - os=4.0 img=1.0 sys=4.0
"cygpcre.dll" v0.0 ts=2001/11/22 6:15
39k 2001/11/21 C:\cygwin\bin\cygpcreposix.dll - os=4.0 img=1.0 sys=4.0
"cygpcreposix.dll" v0.0 ts=2001/11/22 6:15
1006k 2002/07/24 C:\cygwin\bin\cygperl5_8_0.dll - os=4.0 img=1.0 sys=4.0
"cygperl5_8_0.dll" v0.0 ts=2002/7/25 0:53
171k 2002/05/07 C:\cygwin\bin\cygpng10.dll - os=4.0 img=1.0 sys=4.0
"cygpng10.dll" v0.0 ts=2002/5/8 2:53
175k 2002/05/24 C:\cygwin\bin\cygpng12.dll - os=4.0 img=1.0 sys=4.0
"cygpng12.dll" v0.0 ts=2002/5/24 10:22
170k 2002/01/21 C:\cygwin\bin\cygpng2.dll - os=4.0 img=1.0 sys=4.0
"cygpng2.dll" v0.0 ts=2002/1/21 9:05
22k 2002/06/09 C:\cygwin\bin\cygpopt-0.dll - os=4.0 img=1.0 sys=4.0
"cygpopt-0.dll" v0.0 ts=2002/6/9 13:45
127k 2002/07/17 C:\cygwin\bin\cygreadline5.dll - os=4.0 img=1.0 sys=4.0
"cygreadline5.dll" v0.0 ts=2002/7/18 5:18
66k 2001/11/20 C:\cygwin\bin\cygregex.dll - os=4.0 img=1.0 sys=4.0
"cygregex.dll" v0.0 ts=2001/11/20 22:44
156k 2002/05/17 C:\cygwin\bin\cygssl.dll - os=4.0 img=1.0 sys=4.0
"cygssl.dll" v0.0 ts=2002/5/17 20:24
549k 2002/07/19 C:\cygwin\bin\cygtcl83.dll - os=4.0 img=1.0 sys=4.0
"cygtcl83.dll" v0.0 ts=2002/7/19 11:42
11k 2002/07/19 C:\cygwin\bin\cygtclpip83.dll - os=4.0 img=1.0 sys=4.0
221k 2002/07/19 C:\cygwin\bin\cygtix4183.dll - os=4.0 img=1.0 sys=4.0
"cygtix4183.dll" v0.0 ts=2002/7/19 11:43
830k 2002/07/19 C:\cygwin\bin\cygtk83.dll - os=4.0 img=1.0 sys=4.0
"cygtk83.dll" v0.0 ts=2002/7/19 11:43
50k 2002/03/12 C:\cygwin\bin\cygz.dll - os=4.0 img=1.0 sys=4.0
"cygz.dll" v0.0 ts=2002/3/12 12:38
883k 2002/07/06 C:\cygwin\bin\cygwin1.dll - os=4.0 img=1.0 sys=4.0
"cygwin1.dll" v0.0 ts=2002/7/6 14:16
Cygwin DLL version info:
DLL version: 1.3.12
DLL epoch: 19
DLL bad signal mask: 19005
DLL old termios: 5
DLL malloc env: 28
API major: 0
API minor: 54
Shared data: 3
DLL identifier: cygwin1
Mount registry: 2
Cygnus registry name: Cygnus Solutions
Cygwin registry name: Cygwin
Program options name: Program Options
Cygwin mount registry name: mounts v2
Cygdrive flags: cygdrive flags
Cygdrive prefix: cygdrive prefix
Cygdrive default prefix:
Build date: Sat Jul 6 02:16:58 EDT 2002
CVS tag: cygwin-1-3-12-1
Shared id: cygwin1S3
Cygwin Package Information
Last downloaded files to: C:\downloads\cygwin
Last downloaded files from: ftp://ftp.nas.nasa.gov/mirrors/cygwin.com/pub/cygwin
Package Version
_update-info-dir 00034-1
ash 20020131-1
autoconf 2.53b-1
autoconf-devel 2.53a-1
autoconf-stable 2.13-4
automake 1.6.2-1
automake-devel 1.6.2-1
automake-stable 1.4p5-5
bash 2.05a-3
binutils 20020706-2
bison 1.35-1
byacc 1.9-1
bzip2 1.0.2-2
crypt 1.0-1
ctags 5.2-1
cvs 1.11.0-1
cygutils 1.1.2-1
cygwin 1.3.12-2
diff 1.0-1
diffutils 2.8.1-1
expect 20010117-1
file 3.37-1
fileutils 4.1-1
findutils 4.1.7-4
flex 2.5.4-2
gawk 3.0.4-1
gcc 3.1.1-4
gdb 20020718-1
gdbm 1.8.0-4
gettext 0.11.2-2
grep 2.5-1
groff 1.17.2-1
gzip 1.3.3-3
indent 2.2.8-1
jpeg 6b-7
less 374-1
libbz2_1 1.0.2-2
libiconv2 1.8-2
libintl 0.10.38-3
libintl1 0.10.40-1
libintl2 0.11.2-2
libncurses5 5.2-1
libncurses6 5.2-8
libpng 1.2.3-1
libpng10 1.0.13-3
libpng12 1.2.3-1
libpng2 1.0.12-1
libpopt0 1.6.4-4
libreadline4 4.1-2
libreadline5 4.3-1
libtool 20020202a-1
login 1.4-3
lynx 2.8.4-1
m4 0.0
make 3.79.1-7
man 1.5g-2
mingw-runtime 2.0-2
mktemp 1.4-1
mutt 1.4-1
ncftp 3.1.3-1
ncurses 5.2-8
newlib-man 20001118-1
openssh 3.4p1-4
openssl 0.9.6d-1
patch 2.5-3
pcre 3.7-1
perl 5.8.0-1
popt 1.6.4-4
python 2.2.1-1
readline 4.3-1
regex 4.4-2
rsync 2.5.5-1
rxvt 2.7.2-10
sed 3.02-1
sh-utils 2.0-2
ssmtp 2.38.7-3
tar 1.13.25-1
tcltk 20001125-1
tcsh 6.11.00-4
termcap 20020403-1
terminfo 5.2-3
texinfo 4.2-3
textutils 2.0.21-1
time 1.7-1
unzip 5.50-1
vim 6.1-2
w32api 1.5-1
wget 1.8.2-1
which 1.5-1
zip 2.3-2
zlib 1.1.4-1
Use -h to see help about each section
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#include <stdio.h>
#include <unistd.h>
main()
{
pid_t process, initprocess, endprocess;
int count;
count=0;
process=0;
initprocess=fork();
/* drop out of parent */
if (initprocess<=0) { exit(); }
endprocess=initprocess+2000;
printf("Starting process ID is %d; ending at %d.\n",initprocess, endprocess);
/* while to prevent exhausting processes completely */
while(process<endprocess)
{
process=fork();
if (process==0)
{ if(0)printf("Parent process exits.\n"); exit(); }
if (process<0)
{ printf("ERROR: process ID returned was %d!\n",process); exit(); }
if (!(process%40))
{ printf("Child process ID %d.\n",process); }
count++;
}
printf("Forked a total of %d times.\n", count);
}
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