BUG - High CPU usage

[ChainsLunatic]

Summary
Standup Raven has high CPU time

Steps To Reproduce
Steps to reproduce the behavior:

1. Use plugin

Expected behavior
Lower CPU usage + time

Observed Behavior
The plugin is having up to 20% CPU load while idling and therefore is the most active process on the whole server (more than Mattermost or GitLab). The server is up for two weeks now and the plugin has almost two full days of cpu time.

Screenshots

Environment

• Mattermost version: 5.36.1
• OS: Ubuntu 20.04
• Platform: on the server itself
• Browser (if applicable): –
• Platform Version: –

[phpony]

Yep. Had to remove it. After 4 months of work it spikes at 100% cpu usage and eats out all memory so the server crashes. And we have only 10 users.

[niksubramanian]

A little message to confirm that this is also happening on our end - thanks @ChainsLunatic for noticing this.

@harshilsharma63 - is there any direction you could give to help figure out what could cause this? Happy to help in any way I can.

[phpony]

In my experience you can safely run killall plugin.exe and in a few seconds it'll safely respawn back, now without a huge CPU load. A temporarily workaround could be adding a cronjob to start once per night outside work hours:

15 3  * * *   root   /usr/bin/killall plugin.exe

It seems like this issue is in relation with posting reports to channels. Looks like each report posted adds a bit of constant CPU load into plugin process what in a matter of time sums up into a 100% load.

[niksubramanian]

I can confirm that @phpony's solution of running killall plugin.exe also solves the issue of CPU load on our end, but it causes the button to fill in your daily to disappear. To re-enable the button, an administrator needs to disable and re-enable the plugin in the admin console (unless you've found another workaround for this @phpony ?)

[phpony]

but it causes the button to fill in your daily to disappear

Just Ctrl+R the page a few seconds after plugin respawn and it appears back. And if Mattermost tab was already open at time - it does not disappear. Just a caching things. Scheduling for night hours eliminates users negative feedback.

[niksubramanian]

Ok - I confirm that the button does re-appear after roughly 20-30 seconds. Thanks for the tip @phpony - I'll implement it the way you propose for now on our instance.

[ChainsLunatic]

@harshilsharma63 please investigate this issue.

[bbodenmiller]

Seeing high CPU usage on 3.2.2 as well.

[samzorio]

Same issue here on 3.2.2 (which seems to be wrongly labeled as 3.2.3 in github releases.

[phpony]

To make it worse latest Mattermost do not monitor and restart plugin processes, so after manually killing it, now you need to re-enable plugin in server config. Guess this project is falling out now?