Re: What MB/s is pulled from your buffer cache?
- From: Martin Klier <usn@xxxxxxxxx>
- To: usn@xxxxxxxxx
- Date: Tue, 12 Feb 2013 22:20:45 +0100
Sorry, obviously my numbers (TB column) were wrong. This is the new one:
CACHE_READ_BYTES CACHE_READ_BYTES_TB STARTUP_TIME UPTIME_DAYS
UPTIME_SECONDS BYTES_PER_SEC
---------------- ------------------- --------------------- -----------
-------------- -------------
2.5E+16 22718.03589 16.12.2012 18:11:49 58.17
5025692 4970209998
So it's 4,970,209,998 Bytes per second overall. Fairly less than yours. :)
Background: This is a devel DB, so usually they are doing fuzzy stuff.
Martin Klier schrieb:
>> It's over 100MB/s, which my knee jerk (emphasis on the latter) tells me that
>> this seems abnormally high for our li'l DB.
>>
>> I'm curious to see how that number compares to other installations, if folks
>> are willing.
>
> This heavily depends on the quality of your execution plans - have a
> look at SQL "SQL ordered by Buffer Gets" in AWR/Statspack reports. I
> don't think that number to be abnormally high...
>
> The DB is less than 2TB.
Regards
Martin Klier
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