Hello Rainer,

Monday, March 19, 2007, 3:07:54 AM, you wrote:

RH> Thanks for the feedback. Please see below.

>> ZFS should give back memory used for cache to system
>> if applications are demanding it. Right it should but sometimes it
>> won't.
>> 
>> However with databases there's simple workaround - as
>> you know how much ram all databases will consume at least you can
>> limit ZFS's arc cache to remaining free memory (and possibly reduce
>> it even more byt 2-3x factor). For details on how to do it see 'C'mon
>> ARC, stay small...' thread here.
>> 
>> So if you have 16GB RAM in a system and want 10GB for
>> SGA + another 2GB for Oracle + 1GB for other kernel resources you
>> are with 3GB left.
>> 
>> So I would limit arc c_max to 3GB or even to 1GB.

RH> I was of the understanding that this kernel setting was only
RH> introduced in newer Nevada builds. Does this actually work under Solaris 
10, Update 3?

Yes

-- 
Best regards,
 Robert                            mailto:[EMAIL PROTECTED]
                                       http://milek.blogspot.com

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