Chet Ramey <chet.ra...@case.edu> 于2018年12月22日周六 上午12:51写道： > > On 12/19/18 1:10 AM, jake wrote: > > Hi all, > > > > I did a test about run a bash scriplt never quit,but met a memory usage > > issue that cause used memory continuous increase. > > This issue was present in bash-3.2.x, bash-4.0.x, bash-4.1.x, bash-4.2.x, > > bash-4.3.x. However, This issue was disappeared in bash-4.4.0, I can't trace > > which patch fixed the issue or which new feature was introduced in > > bash-4.4.0. > > > > Here is bash script: > > ------------------------------------------------------------------------------ > > #!/bin/bash > > > > logger "Started testing" > > while(true);do > > while (true); do > > ls > /dev/null > > done > > done > > What is the hard limit on the number of processes for a process started in > this environment? (The value of `ulimit -n'.)
Hi Chet, Below is all of the values of the bash ulimit optionals, this issue present in this environment ---------------------------------------------------------------------- root@localhost:/root> cat ulimit.txt core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 516046 max locked memory (kbytes, -l) 64 max memory size (kbytes, -m) unlimited open files (-n) 1024 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) 8192 cpu time (seconds, -t) unlimited max user processes (-u) 516046 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited --------------------------------------------------------------------------- But found change the -u optionals value through the ( ulimit -u 1024) will let this issue disapeared. Thanks, Chen. > > -- > ``The lyf so short, the craft so long to lerne.'' - Chaucer > ``Ars longa, vita brevis'' - Hippocrates > Chet Ramey, UTech, CWRU c...@case.edu http://tiswww.cwru.edu/~chet/
