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Memory leak Urgent [message #1938]

Thu, 09 March 2006 06:19

jbond007
Messages: 78
Registered: January 2006
Location: Miami

Member

the vps leak memory have 3 gb ram and rum 3 vps

RAM Total Used Free
2.97 GB 2.48 GB 496.24 MB

how clean the buffer or ram or another solution
my vps run debian
my host run centos 4.2
Thank you

whitout reboot the system !

[Updated on: Thu, 09 March 2006 06:20]

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Re: Memory leak Urgent [message #1939 is a reply to message #1938]

Thu, 09 March 2006 08:04

kir
Messages: 1645
Registered: August 2005
Location: Moscow, Russia

Senior Member

Sorry I don't really understand what you mean. Could you be more specific?

Please note that RAM is also used for buffers and cache, so there is nothing wrong with the fact that most RAM is used -- Linux is wise in that regard and use (otherwise) free RAM for cache.

Kir Kolyshkin

http://static.openvz.org/userbars/openvz-developer.png

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Re: Memory leak Urgent [message #1943 is a reply to message #1939]

Thu, 09 March 2006 15:46

jbond007
Messages: 78
Registered: January 2006
Location: Miami

Member

dear kir
have only 3 vps debian fresh install and my host tell me that i use 1.5 gb ram

how can clean the cache

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Re: Memory leak Urgent [message #1945 is a reply to message #1938]

Thu, 09 March 2006 16:10

bjmg
Messages: 32
Registered: December 2005
Location: Puettlingen, Germany

Member

Please read a book/the documentation about the linux memory management.
please also try to look into the output of the command "free". It looks like

             total       used       free     buffers     cached
Mem:       2057604    2037524      20080       23640    1045648
-/+ buffers/cache:     968236    1089368
Swap:      2996112       2684    2993428

As you can see I have 2 GB of memory and only 26MB free BUT - and that is important - I also have 23 MB of buffer space and about 1GB of cache space. So in reality I have about 1 GB of free memory because the cache and buffer space is allocated dynamically.
I only have 1 GB of free memory because that is my workstation and I just use a large java application.
You can change that behaviour if you know what your are doing with sysctl.

Bernhard

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Re: Memory leak Urgent [message #1947 is a reply to message #1943]

Thu, 09 March 2006 16:32

kir
Messages: 1645
Registered: August 2005
Location: Moscow, Russia

Senior Member

To start with, there is no sense to free that memory used by cache -- it will be freed as soon as it will be needed. It's just Linux doesn't waste resources -- but rather uses them wisely.

To continue with, this is not a problem, and this is in no way OpenVZ-related.

To end with, here are some more info on topic:
http://gentoo-wiki.com/FAQ_Linux_Memory_Management
http://sourcefrog.net/weblog/software/linux-kernel/free-mem. html

Kir Kolyshkin

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Re: Memory leak Urgent [message #1949 is a reply to message #1947]

Thu, 09 March 2006 17:45

jbond007
Messages: 78
Registered: January 2006
Location: Miami

Member

kir you think this will not issue? Crying or Very Sad

have 3 gb after create vps user and i type free cache go up
1 user total 700 mb in cache
is not way to release the cache ?
the solution is reboot !
but i think is not good idea
any one has same problem ?
Thank you

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Re: Memory leak Urgent [message #1950 is a reply to message #1947]

Thu, 09 March 2006 17:54

jbond007
Messages: 78
Registered: January 2006
Location: Miami

Member

kir you think this will not issue?
have 3 gb after create vps user and i type free cache go up
1 user total 700 mb in cache
is not way to release the cache ?
the solution is reboot !
but i think is not good idea
any one has same problem ?
Thank you

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