Re: Overhauling GUCS - Mailing list pgsql-hackers

From Josh Berkus
Subject Re: Overhauling GUCS
Date
Msg-id 484FFF42.7000408@agliodbs.com
Whole thread Raw
In response to Re: Overhauling GUCS  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-hackers
Tom Lane wrote:
> Josh Berkus <josh@agliodbs.com> writes:
>> Oh, and wal_buffers, the default for which we should just change if it
>> weren't for SHMMAX.
> 
> Uh, why?  On a workload of mostly small transactions, what value is
> there in lots of wal_buffers?

Actually, it's also useful for any workload with many connections.  Any 
time you have high throughput, really.  We've seen this on DBT2, 
SpecJAppserver and iGen.

--Josh


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