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CONFIG_CGROUPS:
This option adds support for grouping sets of processes together,for use with process control subsystems such as Cpusets, CFS, memory controls or device isolation.

 

dev-libs/libcgroup
Homepage: Libcg - Library for Control Groups
Description: Tools and libraries to configure and manage kernel control groups

 

1. group daemons/www {
2.         perm {
3.                 task {
4.                         uid = root;
5.                         gid = webmaster;
6.                 }
7.                 admin {
8.                         uid = root;
9.                         gid = root;
10.                 }
11.         }
12.         cpu {
13.                 cpu.shares = 1000;
14.         }
15. }
16.  
17. mount {
18.   cpu = /cgroup/cpu;
19. }

1. #<user>         <controllers>   <destination>
2. #
3. john          cpu              daemons/www

1. Gentoo-11 mnt # ulimit -a
2. core file size          (blocks, -c) 0
3. data seg size           (kbytes, -d) unlimited
4. scheduling priority             (-e) 0
5. file size               (blocks, -f) unlimited
6. pending signals                 (-i) 31239
7. max locked memory       (kbytes, -l) 64
8. max memory size         (kbytes, -m) unlimited
9. open files                      (-n) 1024
10. pipe size            (512 bytes, -p) 8
11. POSIX message queues     (bytes, -q) 819200
12. real-time priority              (-r) 0
13. stack size              (kbytes, -s) 8192
14. cpu time               (seconds, -t) unlimited
15. max user processes              (-u) 31239
16. virtual memory          (kbytes, -v) unlimited
17. file locks                      (-x) unlimited

1. root@emsslx02:~# su - oracle
2. emsslx02:~$ ulimit -a
3. core file size        (blocks, -c) 0
4. data seg size         (kbytes, -d) unlimited
5. file size             (blocks, -f) unlimited
6. max locked memory     (kbytes, -l) 4
7. max memory size       (kbytes, -m) unlimited
8. open files                    (-n) 65536
9. pipe size          (512 bytes, -p) 8
10. stack size            (kbytes, -s) 10240
11. cpu time             (seconds, -t) unlimited
12. max user processes            (-u) 16384
13. virtual memory        (kbytes, -v) unlimited
14. emsslx02:~$