06-20-2017, 04:46 PM
(06-20-2017, 02:59 PM)xdude Wrote: So what happens when the server needs more power ? Lets say suddenly it needs 45% ? Does this act like a kill switch and shut down the process ?
No, all it does is limit CPU cycles per certain amount in a certain amount of time. (As like 1/100 cycle, in terms of something like that).
Quote:The work of cpulimit is done all in userspace, so it doesn't interfere with the Linux scheduler. Basically, the target process, which you can specify by pid, name, or command line, is continuosly paused and resumed by sending it SIGSTOP and SIGCONT signals. Signals are sent by cpulimit in appropriate moments, based on the limit specified by user and the process statistics read from /proc
Think to it like when you are running a full CPU core, what happens to the programs running on it? They are slower and studders. This is more or less the same proccess, as the Linux scheduler would also do something similar to this (STOP/CONT) when other proccesses need CPU time when a core is full