Difference between revisions of "Ulimits openvz"
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− | + | Resource limits is the concept where you regulate several resources consumed by a process on an UNIX operating systems. | |
+ | show ulimits: | ||
+ | ulimit -a | ||
+ | |||
+ | Show soft limit: | ||
+ | ulimit -Sa | ||
+ | |||
+ | Hard limits: | ||
+ | ulimit -Ha | ||
+ | |||
+ | |||
+ | Also limits stored in file /etc/security/limits.conf | ||
+ | |||
+ | |||
+ | examples used in openvz production: | ||
1 case. (working fine tested) | 1 case. (working fine tested) | ||
Line 22: | Line 36: | ||
− | 2 case. more unlimited but seems | + | 2 case. more unlimited but seems could be problematic sometimes |
# ulimit -a | # ulimit -a | ||
core file size (blocks, -c) 0 | core file size (blocks, -c) 0 | ||
Line 42: | Line 56: | ||
"[[Category:Admin area]]" | "[[Category:Admin area]]" | ||
+ | |||
+ | To set ulimit specify it with param like: | ||
+ | |||
+ | ulimit -n 2048 # set open files limit | ||
+ | |||
+ | The limits will apply only for current shell. so you need to exit exact conf file if you like to apply limit globally/permanently |
Latest revision as of 12:22, 17 June 2015
Resource limits is the concept where you regulate several resources consumed by a process on an UNIX operating systems.
show ulimits:
ulimit -a
Show soft limit:
ulimit -Sa
Hard limits:
ulimit -Ha
Also limits stored in file /etc/security/limits.conf
examples used in openvz production:
1 case. (working fine tested)
# ulimit -a core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 513923 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) 10240 cpu time (seconds, -t) unlimited max user processes (-u) 1024 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited
2 case. more unlimited but seems could be problematic sometimes
# ulimit -a core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) unlimited 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) unlimited cpu time (seconds, -t) unlimited max user processes (-u) 1024 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited
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To set ulimit specify it with param like:
ulimit -n 2048 # set open files limit
The limits will apply only for current shell. so you need to exit exact conf file if you like to apply limit globally/permanently