[CONFIGURATION] Safe to stop mysqld ?

[stuarte]

Hi,

Using htop I have discovered that my Kubuntu 22.04 LTS laptop is running many(!) instances of /usr/sbin/mysqld. Each instance has a different PID and appears(!) to have the same MEM% of 4.8.
As I am not using mysql, would it be safe to to stop these daemons/services ?

Stuart

[claydoh]

As I am not using mysql,

Something is, though. Probably Kontact, via mariaDB (a fork of mysql).
Obviously whatever is using the database will either gripe, or just restart the service, if you kill or stop them.

[Schwarzer Kater]

If you press [F5] to get the "Tree" view in htop - does this reveal what started the mysqld instances?

[GreyGeek]

Or, in a Konsole you can enter
pstree | grep mysql

[stuarte]

Good morning all,

Thank you all for your responses and please accept my apologies for the tardiness of my own response..

Something is, though. Probably Kontact, via mariaDB (a fork of mysql).

claydoh:Hmm. as I am not using either of those(!), do I just stop those services/daemons as well or just uninstall them ? I do not "see" me having a use case for them in the near future.

Schwarzer Kater: Please see the attached screenshot (file: mysqld_problem.png) for what pressing F5 in htop revealed. This was captured after I had gone into htop's F2 Setup/Display options and clicked on/selected " Highlight program "basename" ".

Stuart

[stuarte]

Hi again,

My apologies to GreyGeek for not including you in my previous response. Entering

pstree | grep mysql

in Konsole revealed the following :-

kub@kub-SATELLITE-L870-18V:~$ pstree | grep mysql
|-mysqld---37*[{mysqld}]

Am I correct in thinking that 37* means that there are 37 instances of mysqld running ? If so, that's a lot of resources that could be reclaimed.

Stuart

[claydoh]

I don't think that the 4.9% is per instance, it may be total, as you would have much more than 100% usage.

But in any case, you have installed something that uses a database. It may be using mariadb, which iirc still uses 'mysql' as the naming, as it is a replacement for MySQL.
Anything KDE related that uses akonadi (calendar/address book stuff) would pull this in, as well as any number of other applications.

Stop it, and see which things break