Ok. It must be something like that then.

(Although my experiences usually that query times are very stable and
repeatable. Often 20% slower or so on the first run and then they
settle down. In this case I was experiencing a dramatic speed up from
about 10s to just 100ms.)

- mike

On Mon, Apr 15, 2013 at 8:01 AM, Noel Grandin <[email protected]> wrote:
> We don't store our query cache to disk.
>
> But the operating system will be caching disk contents itself, which will
> make a large difference.
>
> You could try clearing the operating system disk cache, but you'd have to
> have to google around to figure it out for your OS.
>
>
> On 2013-04-15 04:52, Mike Goodwin wrote:
>>
>> Hi,
>>
>> Is it possible to clear the query cache? For the purposes of comparing
>> query performance.
>>
>> Even restarting the database does not seem to work, so they must be
>> getting cached to disk,
>>
>> thanks,
>>
>> Mike
>>

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