Jetpack - a popular plugin for WordPress by WordPress. You can use it for many reasons like, Security, Single Sigin using Wordpress account, photon cdn, social share buttons, Vaultpreas backpack and many more.
This a really a useful and good plugin for the blogger, who are using Wordpress. But at the same time it is also a very heavy plugin for your web server.
If you install Jetpack and then active all the modules (or maximum) then your website may slow due to adding unnecessary JS and CSS by Jetpack.
I was using Jetpack only for Social Share buttons, 2FA (through SMS) & photon image cdn. It was great. But from last few weeks I noticed that server CPU usage reached 100%. When I checked on Analitics , there was only approx 30 realtime visitors. But website getting 502/504 Gateway error.
I contact with @GulshanKumar to get rid off from this problem. He reviewed my website data and web server logs. Then he informed me that the high CPU usages due to Jetpack (automatically adding some codes) and Truepush (using as push notification service).
He also suggest me to disable these two plugins. I followed his advice and after that I shocked, the CPU usgaes always below 15%. It’s not increasing significantly after getting 200+ realtime visitors kn my website.
Thanks @GulshanKumar for your help.