Sysadmin Centmin Performance On Storage Servers

Without know about specific configurations and setup of your app and file storage servers and how you have modified Centmin Mod LEMP stack configuration, it would be hard to know why i.e. how are files actually served downloaded/uploaded which what scripts and what script language and configuration etc. If it's served via php-fpm, then you need to tune your php-fpm settings outlined at PHP-FPM - How to troubleshoot & optimize PHP-FPM server?

Are they same servers you reloaded CentOS 7 OS on for Centmin Mod install ? Or newly ordered servers os same specs but not exactly the same servers as VestaCP ? If the latter then they can not be exactly the same as even changes in what particular network card /model are used can change the way network capabilities perform.

Centmin Mod is provided as is, so troubleshooting load issues is left to end user to do. However, there's many linux tools and scripts that can help you figure out what was causing the issues, when and why.

If you're providing info on this forum, more info might be helpful

1. What version of Centmin Mod ? .08 stable or .09 beta ? If .09 beta when was it installed and when was last time you updated ?
2. What's your VPS/Server hardware specifications ? cpu type ? memory available ? disk space ?
3. Who's your web host ? Different hosts have different limits for server resource usage and some are more restrictive that others so it could just be their resource usage policy you tripped which may or may not be restrictive. If restrictive, then real solution would be finding a better web host. If not restrictive, then it's finding out what caused high cpu load.
4. If running Centmin Mod 123.09beta01 or higher, you will have access to a cminfo top command which can also provide a summary of statistics - some of which are explained in info and linked articles below.

Tools and commands you will want to read up on and learn for basic system admin tasks and troubleshooting.

• 20 Command Line Tools to Monitor Linux Performance
• 13 Linux Performance Monitoring Tools - Part 2
• 80 Linux Monitoring Tools for SysAdmins - Server Density Blog
• Amazing ! 25 Linux Performance Monitoring Tools
• 20 Linux System Monitoring Tools Every SysAdmin Should Know
• My mysqlmymonlite.sh script can help with that mysqlmymonlite.sh Addon | Centmin Mod Community README text file has instructions for setting up a cronjob to email you reports i.e. every 10/15min or every hour.

For example what's output for these commands

Code (Text):

top -bn1

Code (Text):

ps aufxw

Code (Text):

sar -q

Code (Text):

sar -r

Code (Text):

sar -q -f /var/log/sa/sa$(date +%d -d yesterday)

Code (Text):

sar -r -f /var/log/sa/sa$(date +%d -d yesterday)

If you want to look at per process usage stats use pidstat run pidstat every 1 sec for 5 runs and sed is just to replace your main hostname with word hostname so mask your domain for posting on public places

Code (Text):

pidstat -durh 1 5 | sed -e "s|$(hostname)|hostname|g"

for posting code you might want to use CODE tags for code How to use forum BBCODE code tags

 

exact same server as Centmin Mod or different VPS with same web host ? if it's same web host then it could be the web host and/or OS/nginx/TCP settings which you may need to tune for your needs. Or it could be limited by your web app/php app which serves those downloads.