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Top Forums UNIX for Advanced & Expert Users echo 1 > /proc/sys/vm/drop_caches a good idea? Post 302462837 by erick_tuk on Friday 15th of October 2010 07:18:03 AM
Old 10-15-2010
echo 1 > /proc/sys/vm/drop_caches a good idea?

Hi folks.
I work with several production servers, and I have seen in some Kernel Cache using most of the memory.

See this pic:

Image


Do you think this is a smart choice? Remember these are productions servers and it is extremely necesary this does not cause any issues further.

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

 

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Cache::Memory(3pm)					User Contributed Perl Documentation					Cache::Memory(3pm)

NAME
Cache::Memory - Memory based implementation of the Cache interface SYNOPSIS
use Cache::Memory; my $cache = Cache::Memory->new( namespace => 'MyNamespace', default_expires => '600 sec' ); See Cache for the usage synopsis. DESCRIPTION
The Cache::Memory class implements the Cache interface. This cache stores data on a per-process basis. This is the fastest of the cache implementations, but is memory intensive and data can not be shared between processes. It also does not persist after the process dies. However data will remain in the cache until cleared or it expires. The data will be shared between instances of the cache object, a cache object going out of scope will not destroy the data. CONSTRUCTOR
my $cache = Cache::Memory->new( %options ) The constructor takes cache properties as named arguments, for example: my $cache = Cache::Memory->new( namespace => 'MyNamespace', default_expires => '600 sec' ); See 'PROPERTIES' below and in the Cache documentation for a list of all available properties that can be set. METHODS
See 'Cache' for the API documentation. PROPERTIES
Cache::Memory adds the property 'namespace', which allows you to specify a different caching store area to use from the default. All methods will work ONLY on the namespace specified. my $ns = $c->namespace(); $c->set_namespace( $namespace ); For additional properties, see the 'Cache' documentation. SEE ALSO
Cache AUTHOR
Chris Leishman <chris@leishman.org> Based on work by DeWitt Clinton <dewitt@unto.net> COPYRIGHT
Copyright (C) 2003-2006 Chris Leishman. All Rights Reserved. This module is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either expressed or implied. This program is free software; you can redistribute or modify it under the same terms as Perl itself. $Id: Memory.pm,v 1.9 2006/01/31 15:23:58 caleishm Exp $ perl v5.12.4 2011-08-05 Cache::Memory(3pm)
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