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Full Discussion: MySQL Performance Problems
The Lounge What is on Your Mind? MySQL Performance Problems Post 303041973 by Neo on Tuesday 10th of December 2019 04:13:08 AM
Old 12-10-2019
Quote:
Originally Posted by Neo
There is a single fall back query related to the "similar man pages" and tag searches which has an under 0.4 second "slow query"; and I plan redesign that "fall back query" to get rid of that occasional delay which effects only non registered users and tag searches.
Mitigated this slow query for "tag search" and the associated "similar man page".

Still need fine tuning for bad spelling of tags, etc; but over all the performance is much better (and the quality / spelling of the tags issue it a different issue than DB query performance, generally).
 

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PMDAMYSQL(1)						       Performance Co-Pilot						      PMDAMYSQL(1)

NAME
pmdamysql - MySQL database PMDA DESCRIPTION
pmdamysql is a Performance Co-Pilot PMDA which extracts live performance data from a running MySQL database. INSTALLATION
pmdamysql uses a configuration file from (in this order): o /etc/pcpdbi.conf o $PCP_PMDAS_DIR/mysql/mysql.conf This file can contain overridden values (Perl code) for the settings listed at the start of pmdamysql.pl, namely: o database name (see DBI(3) for details) o database user name o database pass word Once this is setup, you can access the names and values for the mysql performance metrics by doing the following as root: # cd $PCP_PMDAS_DIR/mysql # ./Install If you want to undo the installation, do the following as root: # cd $PCP_PMDAS_DIR/mysql # ./Remove pmdamysql is launched by pmcd(1) and should never be executed directly. The Install and Remove scripts notify pmcd(1) when the agent is installed or removed. Binary Status values in text Some of the status values are in the form of YES/NO or ON/OFF. Since these cannot be intepreted by tools like PMIE, they have been duplicated with a _num extension and the values of 1 (YES/ON) or 0 (NO/OFF). Eg: o mysql.slave_status.slave_io_running o mysql.slave_status.slave_io_running_num FILES
/etc/pcpdbi.conf configuration file for all PCP database monitors $PCP_PMDAS_DIR/mysql/mysql.conf configuration file for pmdamysql $PCP_PMDAS_DIR/mysql/Install installation script for the pmdamysql agent $PCP_PMDAS_DIR/mysql/Remove undo installation script for the pmdamysql agent $PCP_LOG_DIR/pmcd/mysql.log default log file for error messages from pmdamysql SEE ALSO
pmcd(1), pmdadbping.pl(1) and DBI(3). # vi: sw=4 ts=4 et: 3.8.10 Performance Co-Pilot PMDAMYSQL(1)
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