Subject | Re: [firebird-support] Re: GEN_UUID performance |
---|---|
Author | Thomas Steinmaurer |
Post date | 2011-04-05T19:44Z |
Hi Sean,
measures.
--
With regards,
Thomas Steinmaurer
Upscene Productions
http://www.upscene.com
http://blog.upscene.com/thomas/
Download LogManager Series, FB TraceManager today!
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>>> Wow, that's a hugh difference. I suspected there would be someThe default one. I simply created a new database without any tuning
>>> penalty, but never thought it would be that great. Nice going on the
>> benchmark.
>>
>> The basic outcome with additional tests was, that using a numeric pk value
>> pretty much behaves as a GUID, if the numeric pk value isn't feed by a
>> generator/sequence providing an increasing number, but with a somehow
>> random value. It's possibly related to keeping the index tree in-sync with
>> newly inserted records.
>
> What was the size of the page cache?
measures.
> Does performance change if you increase the page cache?Yes, it does. Thanks. ;-)
--
With regards,
Thomas Steinmaurer
Upscene Productions
http://www.upscene.com
http://blog.upscene.com/thomas/
Download LogManager Series, FB TraceManager today!
Continuous Database Monitoring Solutions supporting
Firebird, InterBase, Advantage Database, MS SQL Server
and NexusDB!