Re: Simplifying wal_sync_method

UFS was the filesystem on the Solaris 9 box.

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Thomas F. O'Connell
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Sitening, LLC

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On Aug 11, 2005, at 4:18 PM, Andrew Sullivan wrote:

> On Wed, Aug 10, 2005 at 02:11:48AM -0500, Thomas F. O'Connell wrote:
>
>> I was recently witness to a benchmark of 7.4.5 on Solaris 9 wherein
>> it was apparently demonstrated that fsync was the fastest option
>> among the 7.4.x wal_sync_method options.
>>
>> If there's a way to make this information more useful by providing
>> more data, please let me know, and I'll see what I can do.
>>
>
> What would be really interesting to me to know is what Sun did
> between 8 and 9 to make that so.  We don't use Solaris for databases
> any more, but fsync was a lot slower than whatever we ended up using
> on 8.  I wouldn't be surprised if they'd wired fsync directly to
> something else; but I can hardly believe it'd be faster than any
> other option.  (Mind, we were using Veritas filesyste with this, as
> well, which was at least half the headache.)
>
> A