Install Upgrade Just a Query regarding server upgrade

Generally auto optimized setups are initial install only so snapshots on upgraded servers won't have same auto optimized config settings. However, some can be done manually. But, going from 1GB to 2GB memory won't really change your optimized settings much at all, you'd need 4GB or 8+ GB memory to see some differences for auto optimized formulas to trigger more substantial changes.

You can also spin up a 2nd test 2GB same spec VPS and install Centmin Mod and compare it's auto optimizations to see what is different and apply them manually.

For PHP-FPM, you can recompile PHP via centmin.sh menu option 5 so auto redetects memory and server resources and manually re-run /usr/local/src/centminmod/tools/setio.sh as follows

Code (Text):

/usr/local/src/centminmod/tools/setio.sh set

which will recalculate MariaDB MySQL innodb I/O variable values to set

i.e.

Code (Text):

/usr/local/src/centminmod/tools/setio.sh set
Full Reads: 24975
Full Writes: 59362

set innodb_flush_neighbors = 0

innodb_io_capacity = 2900

+------------------------+-------+
/etc/my.cnf adjustment
+------------------------+-------+
existing value:
Variable_name   Value
innodb_io_capacity      2700
innodb_io_capacity_max  5400
new value:
Variable_name   Value
innodb_io_capacity      2900
innodb_io_capacity_max  5800

+------------------------+-------+
innodb io threads adjustment
+------------------------+-------+
existing value:
+------------------------+-------+
innodb_read_io_threads = 2
innodb_write_io_threads = 2
+------------------------+-------+
new value:
+------------------------+-------+
innodb_read_io_threads = 2
innodb_write_io_threads = 2
+------------------------+-------+

Restart MySQL server for io thread changes

 

What I posted above is correct still if you want to initial install auto optimize. But if you want to keep your existing settings and just enable PHP PGO, just set PHP_PGO='y' and recompile php via centmin.sh menu option 5