linux - Synchronized calls across different computers -


i have 3 linux boxes, each running program.

the program needs call callback @ regular intervals, , each call must happen @ exact same time across 3 boxes. don't need other synchronization except calls.

if helps, 3 boxes have clocks synchronized ntp (one of boxes master).

is there way accomplish precision? preferably non linux specific. make things simple, callback must called each n ms if previous call hasn't completed yet.

how send request execute function far enough ahead of time including timestamp when function should executed? receiving application sleep/wait remaining time (some time lost due latency), execute function @ precise timestamp requested.

if called function takes longer interval, should consider using threads. if function executes transfer of results takes longer should away select() without additional threads.


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