ZFS Memory useage

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dhenzler

ZFS Memory useage

Post by dhenzler »

I have a ZFS GhostBSD system which I really like. However when starting the software management tool, it would come up with a memory availability issue for a couple seconds then clear, and proceed to work normally.

Curious about this, and knowing that ZFS uses system Ram for caching I decided to add more memory... moving from 8GB to 16GB and running it at 1600MHz.

System seems snappier, however the ram useage is nearly 80% at times,and is generally hovering at 66% or more. I searched for some GhostBSD compatible command to limit RAM use. However have not found any. Wondering if I should try some Linux or Solaris11 commands?

HELP !
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ericbsd
Developer
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Joined: Mon Nov 19, 2012 7:54 pm

Re: ZFS Memory useage

Post by ericbsd »

add vfs.zfs.arc_max="4G" in /boot/loader.conf that will limit arc to 4GB of ram.
dhenzler

Re: ZFS Memory useage

Post by dhenzler »

just curious what size RAM is required per 500 Gigabite of HD
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ericbsd
Developer
Posts: 2052
Joined: Mon Nov 19, 2012 7:54 pm

Re: ZFS Memory useage

Post by ericbsd »

It is 1GB of RAM per 1TB of HHD.
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