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How to tune the system to use all 8GB RAM

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shakky4711
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How to tune the system to use all 8GB RAM

Post by shakky4711 »

Hello,

my NAS4Free 9.1.0.1 Sandstorm 573 embedded 64bit is running with all default options on a ASUS E35M1-I Board with 8GB RAM. Currently only a zfs-mirror is running, speed is no matter because most clients are equipped mit 100mbit NICs only.

I mentioned that the RAM usage is really low (never more than 2GB), and often see the HD led operate. I know there are some tuning switches to force the system to use all RAM.

I would be pleased when some users could post their ZFS tuning switches.

Many thanks
Shakky

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raulfg3
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Re: How to tune the system to use all 8GB RAM

Post by raulfg3 »

I use ZFSKernTune and select 8GB and no disable prefetch
12.1.0.4 - Ingva (revision 7743) on SUPERMICRO X8SIL-F 8GB of ECC RAM, 11x3TB disk in 1 vdev = Vpool = 32TB Raw size , so 29TB usable size (I Have other NAS as Backup)

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HP T510

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shakky4711
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Re: How to tune the system to use all 8GB RAM

Post by shakky4711 »

Hello Raulf,

stupid question, is this the right location?
system - advanced - syctl.conf

what is the correct syntax for the value I must enter at "mib" and the value really "8gb"?

i do not want to risk a breaking system because of a wrong syntax, learned the lesson hard that FreeBSD does not tolerate any little mistake...

Shakky

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raulfg3
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Re: How to tune the system to use all 8GB RAM

Post by raulfg3 »

As I say I use ZFSkernTune and forget what variables are involved, please install it , is really easy: viewtopic.php?f=71&t=1278&p=10011

If still do you want to modify involves variables by hand , this post can help you:

viewtopic.php?f=71&t=1278&p=10011
12.1.0.4 - Ingva (revision 7743) on SUPERMICRO X8SIL-F 8GB of ECC RAM, 11x3TB disk in 1 vdev = Vpool = 32TB Raw size , so 29TB usable size (I Have other NAS as Backup)

Wiki
Last changes

HP T510

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