Subject | Re: [firebird-support] Change page size from 8k to 16k? |
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Author | Dmitry Kuzmenko |
Post date | 2014-02-27T23:36:33Z |
Hello, Kjell!
Friday, February 28, 2014, 3:23:34 AM, you wrote:
KR> I'm going to do a gbak backup/restore on my 100 Gbyte database this
KR> weekend, and was wondering if perhaps I should bump up the page size
KR> from 8 kbyte to 16 kbyte.
KR> What should I look for?
KR> I'm running gstat -a -i right now. Is this the appropriate options to
KR> get the relevant figures?
No. The best way, always, minimum gsta -h, or maximum gstat -r.
Only gstat -r shows record size, versions, etc.
You should look at indices, that have depth greater than 3 (equal to 4
or more).
Anyway, you may always compare performance. 100gb is not such a big
database that could not be set to 8k back at appropriate time if
you will find that something become slower at 16k.
--
Dmitry Kuzmenko, www.ib-aid.com
Friday, February 28, 2014, 3:23:34 AM, you wrote:
KR> I'm going to do a gbak backup/restore on my 100 Gbyte database this
KR> weekend, and was wondering if perhaps I should bump up the page size
KR> from 8 kbyte to 16 kbyte.
KR> What should I look for?
KR> I'm running gstat -a -i right now. Is this the appropriate options to
KR> get the relevant figures?
No. The best way, always, minimum gsta -h, or maximum gstat -r.
Only gstat -r shows record size, versions, etc.
You should look at indices, that have depth greater than 3 (equal to 4
or more).
Anyway, you may always compare performance. 100gb is not such a big
database that could not be set to 8k back at appropriate time if
you will find that something become slower at 16k.
--
Dmitry Kuzmenko, www.ib-aid.com