maria-discuss team mailing list archive

[Justin Swanhart <greenlion@xxxxxxxxx>]

Hi,

Are you using MyISAM or InnoDB?  What are the values of table_open_cache,
table_definition_cache and innodb_open_files?

--justin

On Tue, Apr 21, 2015 at 6:26 AM, Honza Horak <hhorak@xxxxxxxxxx> wrote:

> Hey, with limited experiences with mariadb deployments, I'm wondering how
> many open files by the mysqld daemon is still sane (expected).
>
> We have a customer that reports hundreds of thousands of open files with
> 600 connections (thread_pool_max_threads is used). Those processes seem
> rather stalled, but files in the datadir are often opened 40.000 times.
>
> Is it even possible that one file is opened several times during
> processing one query? Or does it mean there are ~40.000 queries running?
>
> Version of MariaDB: 5.5.40
>
> Honza
>
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