MSYS2: ulimit: max user processes: cannot modify limit: Invalid arguments Being a victim of a fork bomb of my own construction, I want to reduce the maximum number of user processes in my MSYS2 (MinGW32) system from 256 down to 50.
I have these commands at the top of my .bashrc: ulimit -S -c 0 # Don't want coredumps. ulimit -S -u 50 # limit 50 processes export FUNCNEST=44 # limit function recursion and I get this terminal output: ++ ulimit -S -c 0 ++ ulimit -S -u 50 bash: ulimit: max user processes: cannot modify limit: Invalid argument ++ export FUNCNEST=44 ++ FUNCNEST=44 Note the first ulimit command (for core dump size) works; the second for max user processes fails. I am a member of the administrators group. I hope that's sufficient authority, as my system does not have SU or SUDO commands, nor do I know how to logon on as (or switch to) root. There is no /etc/security/ directory for system wide limits. MSYS2 in installed on Windows XP SP3, 32-bit. + id User uid=197614(User) gid=197121(None) groups=11(Authenticated Users),197121(None),197616(HelpLibraryUpdaters),544(Administrators),545(Users) Can you please explain what I am doing wrong, or how to limit the number of shells being spun off? Here is what ulimit -a displays: core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited file size (blocks, -f) unlimited open files (-n) 256 pipe size (512 bytes, -p) 8 stack size (kbytes, -s) 2040 cpu time (seconds, -t) unlimited max user processes (-u) 256 virtual memory (kbytes, -v) unlimited Here is what ulimit -Ha displays: + ulimit -Ha core file size (blocks, -c) unlimited data seg size (kbytes, -d) unlimited file size (blocks, -f) unlimited open files (-n) 3200 pipe size (512 bytes, -p) 8 stack size (kbytes, -s) unlimited cpu time (seconds, -t) unlimited max user processes (-u) 256 virtual memory (kbytes, -v) unlimited Here is what ulimit -Sa displays: + ulimit -Sa core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited file size (blocks, -f) unlimited open files (-n) 256 pipe size (512 bytes, -p) 8 stack size (kbytes, -s) 2040 cpu time (seconds, -t) unlimited max user processes (-u) 256 virtual memory (kbytes, -v) unlimited PS: Posted to https://unix.stackexchange.com/questions/320494/msys2-ulimit-max-user-processes-cannot-modify-limit-invalid-arguments and I have yet to receive any reply. ------------------------------------------------------------------------------ Developer Access Program for Intel Xeon Phi Processors Access to Intel Xeon Phi processor-based developer platforms. With one year of Intel Parallel Studio XE. Training and support from Colfax. Order your platform today. http://sdm.link/xeonphi _______________________________________________ Msys2-users mailing list Msys2-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/msys2-users
