yeap, i'm just trying to help to reproduce the problem

i'm talking about the regression problem of speed between the same engine but different versions

compare a innodb vs myisam will give more performance sometimes, but sometimes not, the same to myisam/aria

aria can sometimes be faster at recovery time, but the most operations are slower cause it have more internal processing, page cache and other things
but when comparing the fixed/dynamic between both engines, it should be very near
the critical point IMHO is the regression problem, a old version being faster than a newer with same engine configurations

maybe it could be reported as a bug at jira issue tracking (maybe with anonymous data to help dev team to reproduce and find the problem) here: https://jira.mariadb.org/

Em ter., 2 de jun. de 2020 às 12:07, Reindl Harald <h.reindl@thelounge.net> escreveu:

Am 02.06.20 um 17:03 schrieb Roberto Spadim:
> Try to avoid compare aria/myisam cause it have a journal

how does that matter for selects and the point is "but MariaDB 10 MyISAM
is still a long way behind 5.5"

it's complety normal to also compare the same operations with different
engines and the point is still MyISAM without anything else touched got
way slower

> Em ter., 2 de jun. de 2020 às 11:48, Ling, Andy
> <Andy.Ling@grassvalley.com <mailto:Andy.Ling@grassvalley.com>> escreveu:
>
> Well I’ve had a go. Using MariaDB 5.5.68 and MyISAM tables I get
> times very similar to MySQL____
>
> __ __
>
> Some more definitive timings all on the same hardware…____
>
> __ __
>
> MySQL 5.5 MyISAM____
>
> __ __
>
> mysql> SELECT r.rushid FROM rushes r LEFT JOIN browse b ON r.rushID
> = b.rushID WHERE b.rushID IS NULL AND r.updated < NOW() - INTERVAL 1
> DAY;____
>
> +----------------------------------+____
>
> | rushid                           |____
>
> +----------------------------------+____
>
> | 4de1e340d664dd87c4afda2c27f700a8 |____
>
> | 455166dd2cefff65f578aa333f7a5581 |____
>
> | 44f02723e901d2e958c58b9813ebaeae |____
>
> +----------------------------------+____
>
> 3 rows in set (3.63 sec)____
>
> __ __
>
> __ __
>
> MariaDB 5.5.68 MyISAM____
>
> __ __
>
> MariaDB [quentin_v3]> SELECT r.rushid FROM rushes r LEFT JOIN browse
> b ON r.rushID = b.rushID WHERE b.rushID IS NULL AND r.updated <
> NOW() - INTERVAL 1 DAY;____
>
> +----------------------------------+____
>
> | rushid                           |____
>
> +----------------------------------+____
>
> | 4de1e340d664dd87c4afda2c27f700a8 |____
>
> | 455166dd2cefff65f578aa333f7a5581 |____
>
> | 44f02723e901d2e958c58b9813ebaeae |____
>
> +----------------------------------+____
>
> 3 rows in set (3.01 sec)____
>
> __ __
>
> MariaDB 10.4.2 MyISAM____
>
> __ __
>
> MariaDB [quentin_v3]> SELECT r.rushid FROM rushes r LEFT JOIN browse
> b ON r.rushID = b.rushID WHERE b.rushID IS NULL AND r.updated <
> NOW() - INTERVAL 1 DAY;____
>
> +----------------------------------+____
>
> | rushid                           |____
>
> +----------------------------------+____
>
> | 4de1e340d664dd87c4afda2c27f700a8 |____
>
> | 455166dd2cefff65f578aa333f7a5581 |____
>
> | 44f02723e901d2e958c58b9813ebaeae |____
>
> +----------------------------------+____
>
> 3 rows in set (12.890 sec)____
>
> __ __
>
> MariaDB 10.4.2 Aria____
>
> __ __
>
> MariaDB [quentin_v3]> SELECT r.rushid FROM rushes r LEFT JOIN browse
> b ON r.rushID = b.rushID WHERE b.rushID IS NULL AND r.updated <
> NOW() - INTERVAL 1 DAY;____
>
> +----------------------------------+____
>
> | rushid                           |____
>
> +----------------------------------+____
>
> | 4de1e340d664dd87c4afda2c27f700a8 |____
>
> | 455166dd2cefff65f578aa333f7a5581 |____
>
> | 44f02723e901d2e958c58b9813ebaeae |____
>
> +----------------------------------+____
>
> 3 rows in set (16.268 sec)____
>
> __ __
>
> So Aria is the slowest, but MariaDB 10 MyISAM is still a long way
> behind 5.5_

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