[prod]root@virt2:/root# vzctl enter 32013
entered into CT 32013
root@broker:/# sysctl -w fs.mqueue.msg_max=100
sysctl: permission denied on key 'fs.mqueue.msg_max'

root@broker:/# echo 100 > /proc/sys/fs/mqueue/msg_max
-bash: /proc/sys/fs/mqueue/msg_max: Permission denied

CAPABILITY="CHOWN:on DAC_OVERRIDE:on DAC_READ_SEARCH:on FOWNER:on FSETID:on KILL:on SETGID:on SETUID:on SETPCAP:on LINUX_IMMUTABLE:on NET_BIND_SERVICE:on NET_BROADCAST:on NET_ADMIN:on NET_RAW:on IPC_LOCK:on IPC_OWNER:on SYS_MODULE:on SYS_RAWIO:on SYS_CHROOT:on SYS_PTRACE:on SYS_PACCT:on SYS_ADMIN:on SYS_BOOT:on SYS_NICE:on SYS_RESOURCE:on SYS_TIME:on SYS_TTY_CONFIG:on MKNOD:on LEASE:on VE_ADMIN:on FS_MASK:on"

root@broker:~# 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) 257067
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) 257067
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited