Memory leak Post: 302526136

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Operating Systems Linux Red Hat Memory leak Post 302526136 by Corona688 on Monday 30th of May 2011 12:43:02 PM

05-30-2011

Registered User

Quote:

Originally Posted by reply.ravi

exactly problem is i have 12 Red hat servers. all the servers consuming 20% of memory except this one its use more than 95 % of memory.

We've already been over this. You just had the usual "oh my god linux uses free memory as cache" newbie freakout. Lots of memory being cached is completely normal, even expected behavior. If none of your other servers have any memory used as cache, they are the ones that have something wrong with them. Cache is good. Cache makes your system faster. Cache is also still "free" memory that your server will give up and hand over to programs should they ask for it.

Stop freaking out. Stop messing around with your VM modes -- disabling cache hurts your systems -- and undo the changes you did. (If you don't know how, just reboot your system.)

Quote:

also slow compare other rest servers.

This problem is completely unrelated to memory. It has 6 gigabytes of free memory. You don't have to keep prodding at VM modes. The memory's fine, or was until you started messing with it.

What, exactly, is slow? Forget the memory already and tell us what performance problems you're having. What's your load average?

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LEARN ABOUT DEBIAN

data::objectdriver::driver::cache::memcached

Data::ObjectDriver::Driver::Cache::Memcached(3pm)	User Contributed Perl Documentation	 Data::ObjectDriver::Driver::Cache::Memcached(3pm)

NAME

       Data::ObjectDriver::Driver::Cache::Memcached - object driver for caching objects with memcached

SYNOPSIS

	   package MyObject;
	   use base qw( Data::ObjectDriver::BaseObject );

	   __PACKAGE__->install_properties({
	       ...
	       driver => Data::ObjectDriver::Driver::Cache::Memcached->new(
		   cache    => Cache::Memcached->new({ servers => @MEMCACHED_SERVERS }),
		   fallback => Data::ObjectDriver::Driver::DBI->new( @$DBI_INFO ),
	       ),
	       ...
	   });

	   1;

DESCRIPTION

       Data::ObjectDriver::Driver::Cache::Memcached provides automatic caching of retrieved objects in your memcached servers, when used in
       conjunction with your actual object driver.

USAGE

       o   Data::ObjectDriver::Driver::Cache::Memcached->new( %params )

	   Required members of %params are:

	   o   "cache"

	       The "Cache::Memcached" instance representing your pool of memcached servers.  See Cache::Memcached.

	   o   "fallback"

	       The "Data::ObjectDriver" object driver from which to request objects that are not found in your memcached servers.

DIAGNOSTICS

       The memcached driver provides integration with the "Data::ObjectDriver" debug and profiling systems. As these systems are designed around
       SQL queries, synthetic queries are logged to represent memcached operations. The operations generated by this driver are:

       o   "MEMCACHED_ADD ?"

	   Put an item in the cache that was not there. The arguments are the cache key for the object and the flattened representation of the
	   object to cache.

       o   "MEMCACHED_SET ?"

	   Put an item in the cache with new member data. The arguments are the cache key for the object and the flattened representation of the
	   object to cache.

       o   "MEMCACHED_DELETE ?"

	   Remove an object from the cache. The argument is the cache key for the object to invalidate.

       o   "MEMCACHED_GET ?"

	   Retrieve an object. The argument is the cache key for the requested object.

       o   "MEMCACHED_GET_MULTI ?"

	   Retrieve a set of objects. The arguments are the cache keys for the requested objects.

SEE ALSO

       "Cache::Memcached", http://www.danga.com/memcached/

LICENSE

       Data::ObjectDriver is free software; you may redistribute it and/or modify it under the same terms as Perl itself.

AUTHOR &; COPYRIGHT
       Except where otherwise noted, Data::ObjectDriver is Copyright 2005-2006 Six Apart, cpan@sixapart.com. All rights reserved.

perl v5.12.4							    2011-08-29			 Data::ObjectDriver::Driver::Cache::Memcached(3pm)