Take the 2-minute tour ×
Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

I have a KSH crawler script that crawls filesystems on my network, and i would like to limit it to 25% cpu usage, so it does not impact running systems. I am currently using nice but when i run SED, FIND, and some other commands CPU is going above 60% and I dont want that to happen.

I have heard of ulimit, but that is for BASH. Is there a KSH variant of this?

share|improve this question
    
CPU above 60% probably means the CPU would be 60% idle if the script were not running. Is there actual evidence of other processes being starved of CPU? –  RedGrittyBrick Sep 25 '12 at 16:08
    
@RedGrittyBrick No, but we cannot take any chance that there will be...nor can we take these systems offline, without failing over to DR. Which is not an option. –  nitrobass24 Sep 29 '12 at 1:10
add comment

1 Answer

If you have multiple cores, use CPU-pinning AKA CPU-affinity. See taskset

The Linux scheduler will honor the given CPU affinity and the process will not run on any other CPUs.

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.