Re^2: Reaping Zombies

Replies are listed 'Best First'.
Re^3: Reaping Zombies by salva (Canon) on Feb 15, 2006 at 19:23 UTC
It seems to be expensive it terms of CPU usage What do you mean exactly? have you found the `waitpid` system call to be expensive, or are you talking about the full process? What else are you doing inside the while loop besides calling the reaper? You should be calling `sleep` or `select` or any other thing that causes your program to do nothing for a while!	[reply] [d/l] [select]
Re^4: Reaping Zombies by ikegami (Patriarch) on Feb 15, 2006 at 19:36 UTC
If nothing else is done in the loop, just remove `WNOHANG` instead of sleeping.	[reply] [d/l]
Re^4: Reaping Zombies by dsb (Chaplain) on Feb 15, 2006 at 19:33 UTC
Well I'm thinking it's the call to `waitpid()`. I've only just added the multi-threaded processing and the script was using a lot of CPU. With the reaper code, it running at 20-30% CPU usage...eesh dsb This `@ISA my( $cool ) %SIG`	[reply]
Re^5: Reaping Zombies by salva (Canon) on Feb 15, 2006 at 19:35 UTC
but are you doing anything else inside the while loop or just calling the reaper?	[reply]