Memory available

[ibaker]

I have a server with 16gig of ram...it runs memcache. I have 2 XF sites on it and 1 ecom shop site.

In WHM it is reporting that only around 25% of memory is being used:


But when I log in to the server using Putty and run free -m it says it is using just about all memory:


Can anyone advise of an explanation for this...thanks

 

[Walter]

Linux uses all available memory for caching so normally you have free memory = 0.

WHM subtracts the caching so beginners are not irritated.
Just use the numbers from free and calc avail memory minus caching (in your screenshot: 16 GB minus 10 GB caching).

 

[ibaker]

Thanks Walter...

 

[Walter]

Was your site busy at these times? It probably would be better to give Mysql some RAM for caching...

 

[ibaker]

No, it wasn't very busy when I took those screen shots. The reason I was asking is that I am having a chat room installed and the chat room people said there wasn't enough free memory to run it...they said that I only had about 1gig of memory available. Not being a server admin person I needed to verify what they were saying and whether there was a problem with my server...thanks again

 

[p4guru]

I have a server with 16gig of ram...it runs memcache. I have 2 XF sites on it and 1 ecom shop site.

In WHM it is reporting that only around 25% of memory is being used:
View attachment 46684

But when I log in to the server using Putty and run free -m it says it is using just about all memory:
View attachment 46685

Can anyone advise of an explanation for this...thanks

nice read http://www.linuxatemyram.com/