How to incease memory utilisation?

[RobKamp]

I have installed Freenas 8.2.0 Beta3 x64.
I have 16GB installed.
It is an AMD E-350 Mobo and uses five 3TB disks.
There is also a 64GB SSD that is used for cache.
I run RAIDZ.

At the moment 14GB of the 16GB is not used.

What parameters do I have to change to start using all this memory?

 

[Joshua Parker Ruehlig]

In my experience nothing. In an earlier version they put some parameters that lowered memory utilization but they took thos out after people (including I) complained. I think my memory starts out low as well after a restart and jumps up whenever I start streaming videos. ZFS is smart enough to know to throw / leave stuff in memory.

 

[ProtoSD]

You can set vfs.zfs.arc_max to a number around 3/4 of your RAM. Setting vm.kmem_size is not necessary in the x64 version as the default is already 32GB, so unless you have more than 32GB don't worry about that. I just upgraded to 8GB and my memory wasn't being utilized either.

 

[Joshua Parker Ruehlig]

hmm, I took all my tunning off and Freenas sits at around 13gb of my 16gb ram. I think if you don't mess with it freenas will tune itself. So my vote is tuning not necessary for memory utilization, just use. Like mine fills up after someone streams a movie and will stay filled up unless I have to reboot my box.

 

[RobKamp]

Thanks. I turned on autotune and it increased memory usage a lot. it now has 6GB free in stead of 14GB.