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Top Forums Shell Programming and Scripting High CPU Utilization of the script Post 302413269 by bakunin on Thursday 15th of April 2010 05:29:40 AM
Old 04-15-2010
Quote:
Originally Posted by nandu
Currently, i have been told that eventhough there are no files to process, the CPU utilization is very high.
To help you in this we would have to have a look at your script. Without concrete analysis of concrete code all suggestions will be vague at best and misleading at the worst.

Quote:
Originally Posted by nandu
also, currently there is a sleep of 5 secs in the script, if i increase it to 60 seconds, does it make a difference to the performance?
A sleep is not all too taxing on the systems resources so probably CPU load will drop overall because the taxing parts of your script will not be executed as often as before.

As you might notice the amassed use of "might", "could", "probably" and similar words point to a lot of uncertainty on this side of the keyboard. What is really going on can only be analyzed when you show the facts instead of second-hand-impressions of some hearsay. Maybe your quoted consultant is correct, maybe he is completely wrong - its simply impossible to find out given the data presented by you.

bakunin
 

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ATF-SH(1)						    BSD General Commands Manual 						 ATF-SH(1)

NAME
atf-sh [-s shell] -- interpreter for shell-based test programs SYNOPSIS
atf-sh script DESCRIPTION
atf-sh is an interpreter that runs the test program given in script after loading the atf-sh(3) library. atf-sh is not a real interpreter though: it is just a wrapper around the system-wide shell defined by ATF_SHELL. atf-sh executes the inter- preter, loads the atf-sh(3) library and then runs the script. You must consider atf-sh to be a POSIX shell by default and thus should not use any non-standard extensions. The following options are available: -s shell Specifies the shell to use instead of the value provided by ATF_SHELL. ENVIRONMENT
ATF_LIBEXECDIR Overrides the builtin directory where atf-sh is located. Should not be overridden other than for testing purposes. ATF_PKGDATADIR Overrides the builtin directory where libatf-sh.subr is located. Should not be overridden other than for testing purposes. ATF_SHELL Path to the system shell to be used in the generated scripts. Scripts must not rely on this variable being set to select a specific interpreter. EXAMPLES
Scripts using atf-sh(3) should start with: #! /usr/bin/env atf-sh Alternatively, if you want to explicitly choose a shell interpreter, you cannot rely on env(1) to find atf-sh. Instead, you have to hardcode the path to atf-sh in the script and then use the -s option afterwards as a single parameter: #! /path/to/bin/atf-sh -s/bin/bash ENVIRONMENT
ATF_SHELL Path to the system shell to be used in the generated scripts. SEE ALSO
atf-sh(3) BSD
September 27, 2014 BSD
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