Performance Issues

[mitsol]

Hi! Recently i recognized that my Meteor projects got very slow using chrome (in development). At first I thought it was caused by a Meteor update, however when i tried to start chrome without extensions all went back to rocket speed! Disabling one extension after the other revealed that the meteor-devtools were the reason for this. Any suggestions how to avoid this? All in all i really like meteor-devtools 👍

[leonardoventurini]

Can you share your computer specs (CPU, memory, OS, etc)? I suspect it might be related to the new performance feature capturing every minimongo call or the new Chrome's API. Please share all information you can so it helps with the investigation. Thanks 😉

[plb666]

Thank you for you work. I have the same issue on my MacBook Pro (16-inch, 2019):

• 2,3 GHz Intel Core i9 8 core
• 16 GB 2667 MHz DDR4
• macOS Monterey 12.3.1
• Chrome version 100.0.4896.88 (Build ufficiale) (x86_64)

[mitsol]

I use it on an IMAC Pro 2017

• 3,2 GHz 8-Core Intel Xeon W
• 32 GB 2666 MHz DDR4
• macOS Monterey 12.3.1
• Version 100.0.4896.127

[HoptimizeME]

Same here on a Mac M1 Max with 32gb. The admin console of our app is does not finish loading anymore. I agree, there are way too much subscribes on this page but still ;-)

[leonardoventurini]

@HoptimizeME I am sad to hear these reports, I am investigating. Thanks for the feedback.

[HoptimizeME]

@HoptimizeME I am sad to hear these reports, I am investigating. Thanks for the feedback.

Thanks a lot Leonardo! It's greatly appreciated. We've just discovered it and we're impressed by how much it's going to help us!

Thanks again!

[leonardoventurini]

Glad to hear that @HoptimizeME.

I suspect it is some edge case specific to your applications, will need your help solving this.

@mitsol @plb666 Do you guys get any unusual amount of calls (or increased processing time) in the Performance tab for any operations when the slowdown occur?

@HoptimizeME Do you get any errors in the console? You can also go to the chrome://extensions page and inspect the extension worker:

[plb666]

In our case, the methods and subscriptions can return fairly large JSONs. I noticed that when the page is loaded, the DDP TAB finishes displaying the information very late, in my case it takes more than a minute with this data:

From a quick performance analysis, it seems that all the time is used by the processTraces function.

[leonardoventurini]

Wait, processTraces is from the old devtools not mine:

Are you guys using this one?

https://chrome.google.com/webstore/detail/meteor-devtools-evolved/ibniinmoafhgbifjojidlagmggecmpgf?hl=en

cc @plb666 @mitsol

[HoptimizeME]

Wait, processTraces is from the old devtools not mine:

Are you guys using this one?

https://chrome.google.com/webstore/detail/meteor-devtools-evolved/ibniinmoafhgbifjojidlagmggecmpgf?hl=en

cc @plb666 @mitsol

Hi,

Chrome says it's using this one yes. When clicking the link, the button says "Remove from Chrome" but it also says :
Offered by leonardoventurini
Version 1.5
Updated April 13, 2022

So it seems it's made by you. Is it confusing both because of the name or an ID ?

Regards,

Burni

[leonardoventurini]

@plb666 What about you? Can you confirm that?

@HoptimizeME Nah I was just confused since @plb666 mentioned a function not present in my codebase.

If you guys want to pick a time in my Calendly so we can repro together, that would be helpful. 😉

[plb666]

@leonardoventurini I reinstalled the extension, now I have the 1.5 version of Meteor Devtools Evolved

The performance TAB is always empty and app performance is very slow.

Minimongo:

Subscriptions:

DDP:

The chrome instance uses 222% of the cpu:

Processing of DDP messages seems very slow, as does adding records to Minimongo. Whereas the profiler seems to report nothing interesting.

[leonardoventurini]

@mitsol @plb666 I see now, I believe it is the version of Chrome, it presented this kind of behavior you are describing with Manifest v3 extensions in v100. Please try upgrading if possible. If the issue still occurs then please schedule a time with me in my Calendly.

https://calendly.com/leonardoventurini/quick-call