I have a laravel application which I've installed on a 1GB standard droplet running ubuntu 20.4, nginx, MySQL 8 and php 7.4
The application isn't even live yet and I notice it's already using over 50% memory. Yesterday it was using 80% and after a system reboot its returned to using around 60% memory usage.
Below is a snap shot of the current high memory running processes. Is this level of memory usage normal for a laravel application which is not even live i.e. limited load?
top - 19:41:00 up 3:46, 1 user, load average: 0.08, 0.04, 0.01
Tasks: 101 total, 1 running, 100 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.3 us, 0.7 sy, 0.0 ni, 98.7 id, 0.3 wa, 0.0 hi, 0.0 si, 0.0 st
MiB Mem : 981.3 total, 90.6 free, 601.4 used, 289.3 buff/cache
MiB Swap: 0.0 total, 0.0 free, 0.0 used. 212.2 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
815 mysql 20 0 1305900 417008 13352 S 0.7 41.5 1:32.39 mysqld
2257 www-data 20 0 245988 44992 30180 S 0.0 4.5 0:04.67 php-fpm7.4
2265 www-data 20 0 243700 42204 29572 S 0.0 4.2 0:04.41 php-fpm7.4
2259 www-data 20 0 243960 42104 30380 S 0.0 4.2 0:04.44 php-fpm7.4
988 root 20 0 125160 36188 10604 S 0.3 3.6 0:09.89 php
388 root 19 -1 84404 35116 33932 S 0.0 3.5 0:01.14 systemd-journ+
741 root 20 0 627300 20936 6656 S 0.0 2.1 0:02.11 snapd
738 root 20 0 238392 18588 12624 S 0.0 1.8 0:00.83 php-fpm7.4
743 root 20 0 31348 18344 3844 S 0.0 1.8 0:02.75 supervisord
544 root rt 0 280180 17976 8184 S 0.0 1.8 0:00.90 multipathd
825 root 20 0 108036 15376 7732 S 0.0 1.5 0:00.10 unattended-up+
736 root 20 0 29220 13200 5544 S 0.0 1.3 0:00.11 networkd-disp+
726 do-agent 20 0 559436 12120 6588 S 0.0 1.2 0:01.78 do-agent
1 root 20 0 101964 11124 8024 S 0.0 1.1 0:02.52 systemd
623 systemd+ 20 0 23912 10488 6484 S 0.0 1.0 0:00.42 systemd-resol+
778 www-data 20 0 71004 9964 5240 S 0.0 1.0 0:02.43 nginx
My concern is once the application goes live and the load increases, more database connection it going to run out of memory. I know I can resize the droplet and increase the memory or set up some swap space but is this amount of memory usage normal for an unused application?
How can I optimize the high memory usage processes such as mysql, niginx, php. Mysql8 appear to be the main culprit hogging all the memory. Below are my mysql setting:
#
# The MySQL database server configuration file.
#
# One can use all long options that the program supports.
# Run program with --help to get a list of available options and with
# --print-defaults to see which it would actually understand and use.
#
# For explanations see
# http://dev.mysql.com/doc/mysql/en/server-system-variables.html
# Here is entries for some specific programs
# The following values assume you have at least 32M ram
[mysqld]
#
# * Basic Settings
#
user = mysql
# pid-file = /var/run/mysqld/mysqld.pid
# socket = /var/run/mysqld/mysqld.sock
# port = 3306
# datadir = /var/lib/mysql
# If MySQL is running as a replication slave, this should be
# changed. Ref https://dev.mysql.com/doc/refman/8.0/en/server-system- variables.html#sysvar_tmpdir
# tmpdir = /tmp
#
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address = 127.0.0.1
#
# * Fine Tuning
#
key_buffer_size = 16M
# max_allowed_packet = 64M
# thread_stack = 256K
# thread_cache_size = -1
# This replaces the startup script and checks MyISAM tables if needed
# the first time they are touched
myisam-recover-options = BACKUP
# max_connections = 151
# table_open_cache = 4000
#
# * Logging and Replication
#
# Both location gets rotated by the cronjob.
#
# Log all queries
# Be aware that this log type is a performance killer.
# general_log_file = /var/log/mysql/query.log
# general_log = 1
#
# Error log - should be very few entries.
#
log_error = /var/log/mysql/error.log
#
# Here you can see queries with especially long duration
# slow_query_log = 1
# slow_query_log_file = /var/log/mysql/mysql-slow.log
# long_query_time = 2
# log-queries-not-using-indexes
#
# The following can be used as easy to replay backup logs or for replication.
# note: if you are setting up a replication slave, see README.Debian about
# other settings you may need to change.
# server-id = 1
# log_bin = /var/log/mysql/mysql-bin.log
# binlog_expire_logs_seconds = 2592000
max_binlog_size = 100M
# binlog_do_db = include_database_name
# binlog_ignore_db = include_database_name
Any tips and advice much appreciate as this is the first time I'm using a vps.