On 2019-11-29 14:30, Rasmus Villemoes wrote: > When one wants to sleep for some number of milliseconds, one can > do (at least in bash) > > sleep $(printf '%d.%03d' $((x/1000)) $((x%1000))) > > but that's a bit cumbersome.
Why not use floating-point numbers directly? $ sleep 0.01234 Calling sleep(1) with a small milliseconds argument seems anyway a very rough hammer, because the overhead to launch the executable is larger than the actual nanosleep(2) system call. $ for i in $(seq 10); do time sleep 0.00345 ; done 2>&1 | grep real real 0m0.006s real 0m0.004s real 0m0.005s real 0m0.005s real 0m0.005s real 0m0.005s real 0m0.004s real 0m0.004s real 0m0.005s real 0m0.005s As such, I'm only 30:70 to support the 'ms' suffix (or even 'ns'). Have a nice day, Berny
