Re: Using quicksort for every external sort run

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От Peter Geoghegan
Тема Re: Using quicksort for every external sort run
Дата
Msg-id CAM3SWZRvFjsANdZ6Y4K+K9G9-FHkLpTBKHEfpd4qxo1P6oNHQg@mail.gmail.com
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Ответ на Re: Using quicksort for every external sort run  (Peter Geoghegan <pg@heroku.com>)
Ответы Re: Using quicksort for every external sort run  (Peter Geoghegan <pg@heroku.com>)
Список pgsql-hackers
On Tue, Dec 8, 2015 at 6:44 PM, Peter Geoghegan <pg@heroku.com> wrote:
> On Tue, Dec 8, 2015 at 6:39 PM, Greg Stark <stark@mit.edu> wrote:
>> Fwiw attached are two patches for perusal. One is a trivial patch to
>> add the size of the tape to trace_sort output. I guess I'll just apply
>> that without discussion.
>
> +1

>> +/*
>> + * Obtain total disk space currently used by a LogicalTapeSet, in blocks.
>> + */
>> +long
>> +LogicalTapeBlocks(LogicalTapeSet *lts, int tapenum)
>> +{
>> +     return lts->tapes[tapenum].numFullBlocks * BLCKSZ + 1;
>> +}

Why multiply by BLCKSZ here?

-- 
Peter Geoghegan



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