CPU/Memory Rate Limit

From PicOS 2.6, we added the CPU rate limit for processes of PicOS. Including pica_lcmgr, pica_sif, and ovs-vswitchd.

Summary:

The default CPU usage is 40% if not provided, and default memory size is 150 MB.
The warning message will be printed if the memory size is bigger than the default value.
The CPU limitation is based on all CPU's on the system. If the system CPU is P2020 dual cores, 40% CPU limitation is equal to 80% single CPU.

Running CPU/memory rate limit tools manually as follows:

sudo /pica/bin/system/tools/pica_monitor -v -c 40 -m 150 pica_lcmgr

Checking CPU/memory rate limit tools as follows:

admin@XorPlus$ps -aux | grep pica_monitor                      
warning: bad ps syntax, perhaps a bogus '-'?
See http://gitorious.org/procps/procps/blobs/master/Documentation/FAQ
root      3420  0.6  0.7  38944  3896 ?        S<l  Apr07   3:42 /pica/bin/system/tools/pica_monitor -c 40 -m 150 pica_lcmgr 
admin    26490  0.0  0.1   2128   688 pts/0    S+   03:26   0:00 grep --color=auto pica_monitor
admin@XorPlus$