> On Mon, 15 Jan 2007, Dennis Clarke wrote:
>
>>   This has probably been asked before but is there a kernel tunable that
>>  will restrict the high water mark for ZFS cache memory?  This way I could
>>  just grant 50% of mamory and no more.  That sort of thing.
>
> Hi Dennis,
>
> Yes - see:
>
> <URL:http://bugs.opensolaris.org/bugdatabase/view_bug.do?bug_id=6505658>
>

  thank you .. I'll look at that from a perspective of curiosity.

>>   A more important question would be, what effect would this have on
>> system
>> performance and am I merely thwarting progress.  Sort of like early owners
>> of the automobile were forced to send someone walking in front of them
>> with a light in order to ensure that the horses were not frightened.  That
>> sort of thing.
>
> The best (IMHO) answer is to try it on your system with your workload.
> Bear in mind that the ZFS developers are adamant that there should be no
> tunables and that the system should handle every situation automatically.
>

I think that the ZFS developers have been at this for what?  Five years?

I should really just defer to them on this and buy more RAM. :-)


-- 
Dennis Clarke

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