limits.conf to set memory limits
- by Rupert Jipe
I would like to limit any process from using more than 500 MB of RAM. AFAIK this is done using RSS in /etc/security/limits.conf but the process called gnome-panel apparently is using 618436 kB of VmRSS. How can this be ?
/etc/security/limits.conf
* hard rss 512000
username@debian:~$ cat /proc/3002/status
Name: gnome-panel
State: S (sleeping)
Tgid: 3002
Pid: 3002
PPid: 2910
TracerPid: 0
Uid: 1000 1000 1000 1000
Gid: 1000 1000 1000 1000
FDSize: 64
Groups: 20 24 25 29 44 46 112 116 117 1000 1002 1003
VmPeak: 916636 kB
VmSize: 916636 kB
VmLck: 0 kB
VmHWM: 618436 kB
VmRSS: 618436 kB
VmData: 601972 kB
VmStk: 104 kB
VmExe: 516 kB
VmLib: 29232 kB
VmPTE: 1760 kB
Threads: 1
SigQ: 0/14001
SigPnd: 0000000000000000
ShdPnd: 0000000000000000
SigBlk: 0000000000000000
SigIgn: 0000000020001000
SigCgt: 0000000180000000
CapInh: 0000000000000000
CapPrm: 0000000000000000
CapEff: 0000000000000000
CapBnd: ffffffffffffffff
Cpus_allowed: 3
Cpus_allowed_list: 0-1
Mems_allowed: 00000000,00000001
Mems_allowed_list: 0
voluntary_ctxt_switches: 871965
nonvoluntary_ctxt_switches: 47553
PaX: PeMRs
username@debian:~$ cat /proc/3002/limits
Limit Soft Limit Hard Limit Units
Max cpu time unlimited unlimited seconds
Max file size unlimited unlimited bytes
Max data size unlimited unlimited bytes
Max stack size 8388608 unlimited bytes
Max core file size 0 0 bytes
Max resident set 524288000 524288000 bytes
Max processes 100 100 processes
Max open files 1024 1024 files
Max locked memory 65536 65536 bytes
Max address space unlimited unlimited bytes
Max file locks unlimited unlimited locks
Max pending signals 14001 14001 signals
Max msgqueue size 819200 819200 bytes
Max nice priority 0 0
Max realtime priority 0 0
Max realtime timeout unlimited unlimited us
