VM sysctl tuning

István leccine at gmail.com
Tue May 5 18:26:46 UTC 2009

I guess you can find some useful information here:

Please note the difference between 7.2 and all the previous releases.

"FreeBSD 7.2+ has improved kernel memory allocation strategy and no tuning
may be necessary on systems with more than 2 GB of RAM. "

Also wort play a bit with kern.maxvnodes as the document says.
Not to forget:



On Tue, May 5, 2009 at 4:20 PM, Stephen Sanders <ssanders at opnet.com> wrote:

> Does any know if there is any advantage to tuning sysctl's for the VM
> when one has an insane amount of memory in their machine?
> We've a system with 16GB of RAM that we are attempting to optimize the
> system's memory copy and disk write performance.
> Thanks.
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the sun shines for all

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