to recover the swap memory

[kalyan.x.manchikanti at jpmchase.com]

There is a possibility that your app may have a memory leak. Google for
memory leak detectors to see if there's a freeware tool for you to run to
get some info.

 

One thing you can try is increase the swap space temporarily ( mkswap, add
to /etc/fstab and swapon -va) and see if the additional swap space is also
being taken up. If that is the case then you definitely have a problem app
on your hands.

 

Hth,

Kalyan

 

 

-----Original Message-----
From: redhat-sysadmin-list-bounces at redhat.com
[mailto:redhat-sysadmin-list-bounces at redhat.com] On Behalf Of
smal at ccmb.res.in
Sent: Thursday, February 01, 2007 10:01 PM
To: redhat-sysadmin-list at redhat.com
Subject: to recover the swap memory

 






 

Dear All

I shall greatly appreciate and honour, if anyone can suggest the solution
to the below mentioned issue.

The O/S of the m/c. is RHEL AS 3.0 with kernel 2.4.21-20. with x86_64 and
taroon update 3. The RAM is 2GB with swap memory another 2GB. The server
is functioning as mail server and this is the only application which is
loaded onto the system with a third party vendor's mail application
package.

For quite some time the swappable memory itself was found to be consumed
rather exhausted to its full quota of 2GB by the application resulting in
no free memory for subsequents tasks to execute. As a result of this not
only the application but also the system itself becomes frozen/hangs. The
system becomes inaccessible even through remote machines using rlogin or
putty etc to revive. Being the mail sever it is not desirable to have such
frequent interruption in its service.

1. The question is that how to retrieve/restore the swap memory back to
its full quota?
2. How to restore the system when it attains hung state without using
brute force / hot or cold boot?

Your guidelines and suggestions shall be highly appreciable and valuable.

with kind regards
s.mahalingam

S.Mahalingam
Bioinformatics Centre
Centre for Cellular and Molecular Biology
Habsiguda, Uppal Road, Hyderabad 500 007, India.

Ph:+91-40-27192773, 27192774, 27177814
+91-40-27160222 - 41 (20 Lines)
Ext: 2773, 2774
Fax: :+91-40-27160591, 27160311

E-mail:
smal at ccmb.res.in
smal8 at yahoo.com

http://www.ccmb.res.in
_______________________________________________
rhn-users mailing list
rhn-users at redhat.com
https://www.redhat.com/mailman/listinfo/rhn-users

 




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