xargs -P

Another entry in my occasional series of options Unix never had when I were a lad (last time: tail -F)...

I needed to use xargs(1) the other day to run lots of really cheap jobs, each of which had a high latency.

This was taking a long time until a friendly youngster suggested I use GNU xargs' -P option. Starting again with -P 32, my job finished in less time than I'd already wasted.