If you really want to free up some memory space, by clearing out free page caches, directory entries and inode caches, try the below:
Do not expect to see huge free memory instantly though.
Reboot should not be the first troubleshooting step, especially for Un*x.
If your server's memory is being consumed almost 100% constantly, check free -m and concentrate on used column for -/+ buffers/cache:. This tells you how much memory is used by the applications apart from the cache and file system buffers.
If that amount is too high, run sar -B and concentrate on majflt/s field. This tells you how many major page faults (when kernel does not find a page in RAM and incurs reading pages from disk swap area) are occurring per second.
Compare that data with the data gathered when your system had reasonable free memory. If you see differences are high, check which processes are eating up memory, which can be found by issuing top and sorting the RES column.
Dear all,
My server has shutdown frequently.
It is AMD64, OS is RHEL 4 U5.
I've seen the system log, before the shutdown occured:
Jul 29 04:28:56 localhost kernel: EDAC k8 MC0: general bus error: participating processor(local node response), time-out(no timeout) memory transaction... (2 Replies)
Hello All
I just want to know how to Shut Down the Solaris Machines( Servers ) for Maintainance and then Start Up the Machines ( Servers ) .
I think I will have to Log In as root to do that .
Also how do i Check if all the services running on that server before shut down are running... (6 Replies)
hi ,
i installed RHEL 5 server in one machine . i am able to login through putty . But not through Exceed . i mean to say i want a graphical user interface through exceed . some other machine i am able to log in through exceed .
is there any configuration is there for that one . did i miss... (3 Replies)
I installed RHEL 6.1 with KDE 4.3.4 using LDAP on a PC and have now the problem to specifiy a user/Profile specific start menu.
I have used already the kmenuedit tool and tailored for one user a specific menu, successfully.
I changed as an example the konsole submenu.
The kmenuedit was... (0 Replies)
I'm attempting to build a RHEL 6.3 yum errata server inside our company firewall with no luck. Is this something Red Hat attempts to prevent people from doing?
I have done all the steps that I've been able to find to create a repository and configure it.
My two repo files look like the... (2 Replies)
Hi Friends,
My Server is con't stated..it shows the below error..
Red hat exterprise Linux As Release 4(nahat)
kernel 2.6.9-5.ELsmp on an i686
INIT : id "x" respawing too fast :disabled for 5 minutes...
Please help help
Thanks,
Srinivas (1 Reply)
Dear All,
I have a RHEL 5 server of 64 bit . I have disabled the firewalls and added the name server also in resolv.conf.
I want to connect to internet inorder to link the machine with Linux Network.
# I could not connect to any website from this server for ex
ping google.com is not... (8 Replies)
Hi All,
I am new to linux and i am configuring DNS server but while i restart service it shows below given error. Please help to solve this error.
# /etc/init.d/named restart
Stopping named:
Generating /etc/rndc.key:
... (2 Replies)
Dear All ,
One of our Oracle Database Server , which got hanged a couple of days before , so that we could not login to the Server , but it was pinging.
So we tried various options and at last we did a reboot of this server.
To find out the root cause of the Server Hang , when i checked the... (2 Replies)
Good afternoon
I need your help please.
There is a Mantenance Windos which needs to Restart de Database Server 192.x.x.97 to set up some configuration
Is it mandatory or not to stop/start Applcation server that runs in 192.x.x.95 ?
Is it mandatory or not to stop/start apache and Tomcat?... (3 Replies)