> On Apr 24, 2017, at 3:04 PM, jocelyn fournier <jocelyn.fourn...@gmail.com>
> wrote:
>
>>>
> You should search read_rnd_buff_size, it's used in sql/records.cc to compute
> the size of the cache_records in the READ_RECORD struct.
>
>
>
But, the original link implied use with mrr, however, this page:
https://mariadb.com/kb/en/mariadb/multi-range-read-optimization/
<https://mariadb.com/kb/en/mariadb/multi-range-read-optimization/>
Says:
"MariaDB uses mrr_buffer_size as a limit of MRR buffer size for range access,
while MySQL uses read_rnd_buffer_size.”
So, I guess it is still used, but, not for mrr.
Steve
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