|From:||Heikki Linnakangas <hlinnaka(at)iki(dot)fi>|
|To:||Claudio Freire <klaussfreire(at)gmail(dot)com>|
|Cc:||Peter Geoghegan <pg(at)heroku(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>|
|Subject:||Re: Tuplesort merge pre-reading|
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On 09/12/2016 06:47 PM, Claudio Freire wrote:
> On Mon, Sep 12, 2016 at 12:02 PM, Claudio Freire <klaussfreire(at)gmail(dot)com> wrote:
>> On Sun, Sep 11, 2016 at 12:47 PM, Heikki Linnakangas <hlinnaka(at)iki(dot)fi> wrote:
>>> Here's a new version of these patches, rebased over current master. I
>>> squashed the two patches into one, there's not much point to keep them
>> I don't know what was up with the other ones, but this one works fine.
>> Benchmarking now.
> I spoke too soon, git AM had failed and I didn't notice.
> regression.diffs attached
> Built with
> ./configure --enable-debug --enable-cassert && make clean && make -j7
> && make check
Ah, of course! I had been building without assertions, as I was doing
performance testing. With --enable-cassert, it failed for me as well
(and there was even a compiler warning pointing out one of the issues).
Sorry about that.
Here's a fixed version. I'll go through Peter's comments and address
those, but I don't think there was anything there that should affect
performance much, so I think you can proceed with your benchmarking with
this version. (You'll also need to turn off assertions for that!)
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