Memory usage of Riot has increased quite a lot

[turt2live]

Description

I have a fairly large account that sits in 820 rooms, so it's not all that surprising that Riot uses a good chunk of my RAM. Over the last couple weeks I've noticed the RAM usage getting steadily higher, despite not joining more than a few rooms. Approximately a month ago the RAM usage was hovering around 1.2GB, and now it's anywhere between 1.7 and 2GB. I'm working on getting a memory snapshot, however the footprint is so large that chrome needs some extra flags to get the dump.

Version information

• Platform: web (in-browser)
• Browser: Chrome 62
• OS: Windows 10
• URL: riot.im/develop

[lampholder]

Do we have any ideas why this might be?

Potentially related to #3307

[turt2live]

It helped a bit to clear out the rageshake logs, however that only fixed the issue for a short while. I was seeing ~2GB of strings being loaded due to rageshake :(

[grahamperrin]

https://matrix.to/#/!DgvjtOljKujDBrxyHk:matrix.org/$15146526923278095CKgBf:matrix.org (2017-12-30):

Is it reasonable for the web app to use more than 1 G memory?
…
https://matrix.org/_matrix/media/v1/download/matrix.org/buFeNpKqWJVDrAWLxuqxbBAc

https://matrix.to/#/!DgvjtOljKujDBrxyHk:matrix.org/$15146764903622711dLWLX:matrix.org @ara4n replied:

yup, riot/web memory usage sucks atm and we need to improve it

Two frames from a (long) screen recording, made this morning (for a variety of purposes, not solely for Riot). The leap in use of virtual memory by Waterfox – from 4,811 M to 10.8 G, when https://riot.im/app/#/room/#mozilla_#firefox:matrix.org begins to load – is entertaining (not alarming):

:-) yeah, I could use fewer extensions, but the sixty-something that are currently enabled are a good fit for my workflows.

[hrj]

Do we have any ideas why this might be?

I wouldn't like to share a heap snapshot publicly, but I could share some statistics:

I am running version 0.13.5.

The tab manager of chromium was showing 0.5 GB of memory usage for the vector.im tab.

The heap snapshot was 261 MB. I assume the rest of the 0.5GB is used internally by Chromium.

Attaching a screenshot of the highest memory consuming object.

[turt2live]

I'm going to close this at risk of it being re-opened by someone on the team. Personally my memory usage has decreased and some other issues (#6212 and #3307 in particular).

[grahamperrin]

I haven't noticed a decrease …

[turt2live]

@grahamperrin /app is not updated to include the various improvements yet.

[grahamperrin]

Thanks @turt2live

With /develop it's fairly easy to have a colossal amount of virtual memory in use, for example from this:

– to this (more than 34 G):

– but that might be platform- and/or browser-specific,

• Mozilla bug 1441041 - memory not freed after ceasing to visit some types of content

[turt2live]

@grahamperrin I highly recommend opening a new issue if you're seeing this as not improved. Keep in mind there's also #6212 and #3307 which have somewhat derailed into general performance problems.

[grahamperrin]

Yep, in a nutshell:

• ignoring the red alert for connectivity, for /develop I see 686.04 MB in the screenshot
• that's significantly less than the 1,016.72 MB beneath the pointer in the shot of /app at Memory usage of Riot has increased quite a lot #5660 (comment)