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Top Forums UNIX for Dummies Questions & Answers Clearing memory cache on Linux server Post 302808959 by SkySmart on Friday 17th of May 2013 06:53:27 PM
Old 05-17-2013
Clearing memory cache on Linux server

i wish to clear memory cache on a production box and i was wondering what is the worst that can happen if i do?

i already tested this on a backup server and everything seemed fine.

but i need to know from you experts what are the worst things that can happen when i run it on a real server:

Code:
sync && echo 1 > /proc/sys/vm/drop_caches

the reason i need to run this is because i've been getting error messages similar to:

Code:
could not be performed due to a fork() error: 'Resource temporarily unavailable'.

before running the above command, i will of course make sure all applications aon the host are shut down. then i'll run the command.

any advice?
 

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qrun(8B)								PBS								  qrun(8B)

NAME
qrun - run a pbs batch job SYNOPSIS
qrun [-a] [-H host] job_identifier ... DESCRIPTION
The qrun command is used to force a batch server to initiate the execution of a batch job. The job is run regardless of scheduling posi- tion, resource requirements, or state. In order to execute qrun, the user must have PBS Operation or Manager privilege. OPTIONS
-a Specifies the job(s) is to be run asynchronously. -H host Specifies the host within the cluster on which the job(s) are to be run. The host argument is the name of a host that is a member of the cluster of hosts managed by the server. If the option is not specified, the server will select the "worst possible" host on which to execute the job. OPERANDS
The qrun command accepts one or more job_identifier operands of the form: sequence_number[.server_name][@server] STANDARD ERROR
The qrun command will write a diagnostic message to standard error for each error occurrence. EXIT STATUS
Upon successful processing of all the operands presented to the qrun command, the exit status will be a value of zero. If the qrun command fails to process any operand, the command exits with a value greater than zero. SEE ALSO
pbs_server(8B), pbs_sched(8B), qmgr(1B) Local qrun(8B)
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