Wordpress 100% CPU usage - Need some help

Hello,

From the beginning, I am getting 100% CPU usage without any reason. When I run top it shows 2-3 php-fpm PIDs with 40,50,20% as cpu usage. On nixstats.com sometimes in process tab it shows more than 200% as CPU. I have tried to set children to 10,50,100 but still no luck. I have also disabled wordpress cron jobs from wp-config.
If I buy 300-1000 visitors via pop in google analytics only 400-500 out of 1000 appears. But if I use link shortner and use my play store app link all them go through it.
Even php-fpm starts using 100% of CPU for 300 users. I saw users able to get 10M visitors per day on 2GB RAM server with nginx + php-fpm + wordpres. But in my case its not happening.
I also ran loader.io tests and 1000 clients per minute were delivered without any drop.
5000 clients per minute were delivered with 2% of drop.

Earlier I was having few problems & I have solved it by updating nginx & php.
My current server config:

Code:

CPU: Intel E5 4-Core
Ram: 12 GB
SSD: 300 GB
Provider: Contabo

When I test for server response I get 70-85ms.

Website info:

Code:

I have news website with average page size of 2MB.
Redis server is running properly
I am not using any plugin like wp super cache
Only redis object cache + nginx helper is used
Using PositiveSSL with HTTPS as default.
domain.conf is disabled
Currently, my site has 5k articles

I can provide login to nixstats.com to check server stats.

---

*I have to enable CRON jobs to start my work.

 

Is redis not enough for caching?

 

I have attached the outputs of the commands you stated above:

sar -r -f varlogsasa$(date +%d -d yesterday) · GitHub
ps aufxw · GitHub
sar -q -f varlogsasa$(date +%d -d yesterday) · GitHub
sar -q · GitHub
sar -r · GitHub
top bn-1 · GitHub

Output of top:
Seems like all 4 cores are used by php-fpm



/usr/local/etc/php-fpm.conf

Code:

[global]
; Log level
; Possible Values: alert, error, warning, notice, debug
; Default Value: notice
log_level = warning
pid = /var/run/php-fpm/php-fpm.pid
error_log = /var/log/php-fpm/www-error.log
emergency_restart_threshold = 10
emergency_restart_interval = 1m
process_control_timeout = 10s
;include=/usr/local/nginx/conf/phpfpmd/*.conf

[www]
user = nginx
group = nginx

listen = 127.0.0.1:9000
listen.allowed_clients = 127.0.0.1
;listen.backlog = -1

;listen = /tmp/php5-fpm.sock
listen.owner = nginx
listen.group = nginx
listen.mode = 0660

pm = ondemand
pm.max_children = 120
; Default Value: min_spare_servers + (max_spare_servers - min_spare_servers) / 2
pm.start_servers = 25
pm.min_spare_servers = 25
pm.max_spare_servers = 35
pm.max_requests = 500
pm.status_path = /status_phpfpm

; PHP 5.3.9 setting
; The number of seconds after which an idle process will be killed.
; Note: Used only when pm is set to 'ondemand'
; Default Value: 10s
pm.process_idle_timeout = 10s;

rlimit_files = 131072
rlimit_core = unlimited

; The timeout for serving a single request after which the worker process will
; be killed. This option should be used when the 'max_execution_time' ini option
; does not stop script execution for some reason. A value of '0' means 'off'.
; Available units: s(econds)(default), m(inutes), h(ours), or d(ays)
; Default Value: 0
;request_terminate_timeout = 60
; Default Value: 0
;request_slowlog_timeout = 0
slowlog = /var/log/php-fpm/www-slow.log

pm.status_path = /phpstatus
ping.path = /phpping
ping.response = pong

; Limits the extensions of the main script FPM will allow to parse. This can
; prevent configuration mistakes on the web server side. You should only limit
; FPM to .php extensions to prevent malicious users to use other extensions to
; exectute php code.
; Note: set an empty value to allow all extensions.
; Default Value: .php
security.limit_extensions = .php .php3 .php4 .php5

; catch_workers_output = yes
php_admin_value[error_log] = /var/log/php-fpm/www-php.error.log
php_admin_value[disable_functions] = shell_exec

 

Imgur: The magic of the Internet

Here's my Redmon stat. I think redis is working perfectly with wordpress.
I have around 5k+ article.
Should set redis TTL to an higher value?

 

Where can I specify the redis memory?

My average page size is 2MB, Do you think brotli compression will increase my performance?
My current ping dom stat:


Is this normal to have 100%+ php-fpm usage?

 

I think I have messed up with my WP installation.
I did installed via option 22 + redis without SSL but after that I installed SSL.

Then you helped me in setting up SSL on this thread: Wordpress - ERR_Connection_Refused 10 out of 100 times.

On running
curl -s https://domain.com/136687/ | tail -3

Code:

<!--Cached using Nginx-Helper on 2017-12-13 15:11:33. It took 5 queries executed in 0.211 seconds.-->
<!--Visit Nginx Helper for more details-->

 

Will brotli compression increase my wordpress page delivery speed?

 

@eva2000 I buy traffic for my site but out of 1000 only 400-500 are delivered. Is there any way I can check why it's happening?

 

@eva2000
Can I use nginx FastCGI cache just by switching with nginx helper plugin just by removing redis object cache plugin and selecting nginx Fastcgi cache? Will it work or there's something I need to change in vhost file?

 

I just got another issue. Redis is caching my admin panel also. I tried to disable a plugin but when I click on deactivate it says plugin deactivated but when I check plugin status is still activated. Then I disabled redis object cache and nginx helper then I was able to deactivate the plugin.

My also has theme panel and was not able to change those options because redis cached all those.
Is it possible that redis doing it?