Re: synchronous commit vs. hint bits

On Tue, Nov 29, 2011 at 1:42 AM, YAMAMOTO Takashi
<yamt(at)mwd(dot)biglobe(dot)ne(dot)jp> wrote:
>> On Mon, Nov 7, 2011 at 5:26 PM, Simon Riggs <simon(at)2ndquadrant(dot)com> wrote:
>>
>>>> 5. Make the WAL writer more responsive, maybe using latches, so that
>>>> it doesn't take as long for the commit record to make it out to disk.
>>>
>>> I'm working on this already as part of the update for power
>>> reduction/group commit/replication performance.
>>
>> I extracted this from my current patch for you to test.
>
> is it expected to produce more frequent fsync?

Yes, I would expect that. What kind of increase are you seeing? Is
it causing a problem for you, or are you just making an observation?

--
Robert Haas
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