Excessive memory usage of webrender (render-texture-hosts) on Google spreadsheets
Categories
(Core :: Graphics: WebRender, defect, P3)
Tracking
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People
(Reporter: whimboo, Unassigned)
References
Details
When creating a memory report via about:memory yesterday I noticed a high memory usage of WebRender especially in render-texture-hosts.
2,365.59 MB (100.0%) -- gfx
└2,365.59 MB (100.0%) -- webrender
├──1,680.66 MB (71.05%) -- textures
│ ├──1,521.47 MB (64.32%) ── render-texture-hosts
After closing same tabs and minimizing memory it turns out that it might belong to a Google spreadsheet that I edited yesterday. After closing it and minimizing memory the memory usage of WebRender dropped by 900MB. Reopening the tab added again about 500MB.
This is the Google spreadsheet that is causing the issue.
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Comment 2•1 year ago
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Interesting is that I can also see a huge memory usage for the js-realm of the same spreadsheet, which actually references the scripted sheet where I have a IMPORTDATA function running in the cell C1. Maybe this is related and it leaks memory?
5,388,814,304 B (100.0%) -- explicit
├──5,037,170,232 B (93.47%) -- window-objects
│ ├──4,841,831,696 B (89.85%) -- top(https://docs.google.com/spreadsheets/d/1mjV9qLSR6FNtAjKCvNP4QBW7Ea2Q5JwsVxbszbYqEMQ/edit?gid=1346698167#gid=1346698167, id=180)
│ │ ├──4,715,812,936 B (87.51%) -- active
│ │ │ ├──4,681,833,032 B (86.88%) -- window(https://docs.google.com/spreadsheets/d/1mjV9qLSR6FNtAjKCvNP4QBW7Ea2Q5JwsVxbszbYqEMQ/edit?gid=1346698167#gid=1346698167)
│ │ │ │ ├──4,625,974,112 B (85.84%) -- js-realm(https://docs.google.com/spreadsheets/d/1mjV9qLSR6FNtAjKCvNP4QBW7Ea2Q5JwsVxbszbYqEMQ/edit?gid=1346698167#gid=1346698167)
│ │ │ │ │ ├──4,611,263,616 B (85.57%) -- classes
│ │ │ │ │ │ ├──4,018,965,696 B (74.58%) -- class(Object)/objects
│ │ │ │ │ │ │ ├──2,595,349,296 B (48.16%) ── gc-heap
│ │ │ │ │ │ │ └──1,423,616,400 B (26.42%) -- malloc-heap
│ │ │ │ │ │ │ ├──1,418,309,024 B (26.32%) ── slots
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Comment 3•1 year ago
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What platform is this on? Opening that doc on Linux reports ~245 MB of memory in render texture hosts on Linux on my local machine.
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Comment 4•1 year ago
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I'm on Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14.7.1; rv:135.0) Gecko/20100101 Firefox/135.0 ID:20250105092842.
You most likely have to make a copy of the file and run that import multiple times. Therefore go to the scripted (5th) tab and press F2 on the C1 cell. Change the u=1 to something else and press return. This will re-load the data. Also maybe copy and paste entries from that tab over to the 4th tab.
Sorry, but I do not have exact steps yet. Happy to record a memory profile if you could tell exactly what needs to be measured.
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Comment 5•1 year ago
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Andrew, could you please take a look at comment 2? The leak in gc-heap is probably different. So shall I file a separate bug for it?
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Comment 6•1 year ago
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Sure, though I'm not sure who is going to look into it. It isn't necessarily a leak, but that does seem like an awful lot of memory for a single spreadsheet.
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Comment 7•1 year ago
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(In reply to Andrew McCreight [:mccr8] from comment #6)
Sure, though I'm not sure who is going to look into it. It isn't necessarily a leak, but that does seem like an awful lot of memory for a single spreadsheet.
Sure. Filed bug 1944803 for the JS part.
Glenn, maybe you can check my comment 4? Anything I could further help with? Thanks.
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Comment 8•1 year ago
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Added to gfx-triage so we can determine an appropriate priority and who may have time to look at this.
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Comment 9•1 year ago
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It seems like this is probably S3 P3 for now, unless we see a smoking gun or more widespread issues.
It would probably be nice to be able to see a breakdown of what the render-texture-hosts are, even if it's just "came from origin sheets.google.com" or something.
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Updated•1 year ago
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Updated•1 year ago
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Comment 10•1 year ago
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(In reply to Kelsey Gilbert [:jgilbert] from comment #9)
It would probably be nice to be able to see a breakdown of what the render-texture-hosts are, even if it's just "came from origin sheets.google.com" or something.
How could this be done? Is there some extra setting that I would have to use to get this information? Happy to provide the requested information.
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Comment 11•1 year ago
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(In reply to Henrik Skupin [:whimboo][⌚️UTC+2] from comment #10)
(In reply to Kelsey Gilbert [:jgilbert] from comment #9)
It would probably be nice to be able to see a breakdown of what the render-texture-hosts are, even if it's just "came from origin sheets.google.com" or something.
How could this be done? Is there some extra setting that I would have to use to get this information? Happy to provide the requested information.
Kelsey, I would appreciate if you could tell me which data is needed and how to get it. It's kinda annoying for me given that I have to restart Firefox more often than I would like due to the high memory usage. Thanks.
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Comment 12•1 year ago
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It looks way better these days. I wonder if Google pushed some fix for that leak and that it was not our fault. I'll close as WFM for now but will reopen in case the problem comes back.
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