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Top Forums Shell Programming and Scripting BASH Execution Delay / Speedup Post 302933423 by gmark99 on Friday 30th of January 2015 10:59:40 AM
Old 01-30-2015
Unfortunately we built the database custom as well, so we'll have to test out the capacity. In reference to another comment, each job does six queries, and they're not very time sensitive at all. If we have to throttle requests, we can do that. What guidance you folks have provided so far is invaluable. I'll explore the advice I've gotten and come back if I have more questions, which I'm very likely to have.

Thanks!!!

---------- Post updated 01-30-15 at 09:55 AM ---------- Previous update was 01-29-15 at 07:45 PM ----------

Reply to sea:

The "my_job" processes just wait for the returns of function calls that read the data or that are operating hardware.

---------- Post updated at 09:59 AM ---------- Previous update was at 09:55 AM ----------

I have a couple more questions.

If I execute a "wait" command, does that cause a wait until ALL the child background processes have completed?

It was suggested I put in a "sleep 3" command after an "exit"? Did I get the right? Or after a "done"? Why, specifically?

Thanks!
 

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wait(1) 						      General Commands Manual							   wait(1)

NAME
wait - await process completion SYNOPSIS
[pid] DESCRIPTION
If no argument is specified, waits until all processes (started with of the current shell have completed, and reports on abnormal termina- tions. If a numeric argument pid is given and is the process ID of a background process, waits until that process has completed. Other- wise, if pid is not a background process, exits without waiting for any processes to complete. Because the system call must be executed in the parent process, the shell itself executes without creating a new process (see wait(2)). Command-Line Arguments supports the following command line arguments: The unsigned decimal integer process ID of a command, whose termination is to wait for. WARNINGS
Some processes in a 2-or-more-stage pipeline may not be children of the shell, and thus cannot be waited for. SEE ALSO
csh(1), ksh(1), sh-posix(1), sh(1), wait(2). STANDARDS CONFORMANCE
wait(1)
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