Operating System

Table of Contents

• SystemD Notizen
• InnoDB NUMA interleave with MariaDB
• Checking Galera Cluster SST timeout with SystemD
• Kill MariaDB Galera node under SystemD
• MariaDB Memory locking (--memlock) with SystemD
• Who is restarting my mariadbd?
• Location of SystemD unit files

SystemD Notizen

SystemD paged per default nach less. Das ist ungewohnt und doof, weil es gegen allgemeines Linux-Verhalten verstösst. Abhilfe schafft:

shell> systemctl --no-pager status
shell> alias systemctl='systemctl --no-pager'

Das …

One of our partners recently asked me on what platforms do we usually see MySQL installed out there…

The last 5 years I gave the answer: Typically it is 80% Linux, 10% Windows, 5% Solaris and 5% all others. But this was only the picture of my limited view and I was not sure how objective this was.

This time I really wanted to know it and so I collected the information of about 570 MySQL installations of customers.

The following numbers came out:

Operating System

shell> kill -l

Linux