04.05.2018 11:42, Alexey Kovyazin a...@ib-aid.com [firebird-support] wrote:
> the single badly designed query with many page fetches can "improve" this
> parameter a lot,
> without any real improvement in the performance, of course.
The question was about cache effectiveness which is always m
I am totally agree with Mark.
Ratio of page reads/page fetches for all queries has a little sense.
For example, the single badly designed query with many page fetches can
"improve" this parameter a lot, without any real improvement in the
performance, of course.
Regards,
Alexey Kovyazin
IBSur
On 3-5-2018 15:52, Javier Cintron fcintr...@yahoo.com [firebird-support]
wrote:
>
>
> Thank you very much!
You shouldn't focus purely on this metric, greater page caches may lead
to more pages returned from memory, but also increase memory consumption
and overhead from things like cache evict
Thank you very much!On Thursday, May 3, 2018, 3:30:32 AM CDT, Dimitry
Sibiryakov s...@ibphoenix.com [firebird-support]
wrote:
03.05.2018 7:56, Javier Cintron fcintr...@yahoo.com [firebird-support] wrote:
> Firebird ver 2.5.7.27050 64 bits
> Windows Server 2012R2
>
> ¿Is there a w
03.05.2018 7:56, Javier Cintron fcintr...@yahoo.com [firebird-support] wrote:
> Firebird ver 2.5.7.27050 64 bits
> Windows Server 2012R2
>
> ¿Is there a way to calculate the effectiveness of incrementing the page cache
> buffer ?
select cast(mon$page_reads as double precision)/mon$page_fetche