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I recently bought a server. I have Centos 7 64-bit on it, with VestaCP installed (with one wordpress blog added).. Only these things are installed, nothing else as per my understanding. However, my memory usage is already 50% (512mb out of 1024). Is that much VestaCP with a fresh installation of wordpress consumes? because I was told VestaCP is very light.

Sorry for offtopic, but my question is.. Is there anyway I can check what processes are being using my memory and which ones are just using memory and I am not using them.. I mean, How can I free some of the memory usage on Centos..

I'd appreciate any sort of help, regards

  • You should start by taking a look at htop and sort it by memory usage. – Julie Pelletier May 15 '16 at 2:25
  • I installed htop, but after installing htop package, it is still not working.. :( It says command not found. – Umair K May 15 '16 at 2:31
  • If you're sure it installed, then search for it. – Julie Pelletier May 15 '16 at 2:34
  • How can I search for it? – Umair K May 17 '16 at 1:17
  • find / -name htop – Julie Pelletier May 17 '16 at 4:41
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Since I am newbie, so took me a time to figure out. Bascially, in VestaCP, there are a lot of additional services running from default. I wasn't using Mailbox (like clamd, exim, dovecot) and other mail related services. I stopped all those services and rebooted my server.. The memory got down to 200mb out of 1024mb.. which is okay.. :) I did it, by running the following command.

service clamd stop

So, always make sure that you are not running processes that you're not using.. I know for most it will sound simple, but hopefully for some newbies like me, it'll help.

Regards

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Please make sure, you have performed following commands to install Htop on your CentOS 7(64bit) Server as "root" privilege user :

# wget http://pkgs.repoforge.org/rpmforge-release/rpmforge-release-0.5.3-1.el7.rf.x86_64.rpm
# rpm -ihv rpmforge-release-0.5.3-1.el7.rf.x86_64.rpm
# yum install htop

Optionally, you can also use preinstalled “top” command which is similar to “htop

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