Excessive CPU usage by Calendar component
Categories
(Calendar :: General, defect)
Tracking
(thunderbird_esr128 affected)
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| thunderbird_esr128 | --- | affected |
People
(Reporter: dhlocker, Unassigned)
Details
(Keywords: perf)
User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:130.0) Gecko/20100101 Firefox/130.0
Steps to reproduce:
Switched from Mail tab to Calendar tab
Actual results:
Calendar displayed; CPU usage by thunderbird-bin went from 7-8% to 120+%; T'bird became non-responsive. Sometimes, after waiting several minutes, I was able to search in calendar, but mostly it just sat there doing nothing.
Expected results:
Display calendar; allow calendar search; responsive behaviour (no minutes of waitiing.)
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Reporter | |
Comment 1•1 year ago
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Memory consumption also increased. Started at 535MB; increased within one minute to 1.4GB; at two minutes it's at 2.0GB and seems to have stabilised.
I also noted that I had "All Events" selected in the search chooser. (no search active; nothing in the search window)
switching to "Events in the Past" changed CPU usage down to 1-4%; memory approx 480MB
switching to "Events in this Calendar Month" -> 1-5% CPU (memory consumption is down to 433MB);
"Events in Current View" -> 3-7% CPU; 440MB
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Reporter | |
Comment 2•1 year ago
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n.b. recent (within the last 24hrs) update - version is specifically 128.2.1esr (64-bit) in an Ubuntu snap.
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Updated•1 year ago
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Reporter | |
Comment 4•1 year ago
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(In reply to Wayne Mery (:wsmwk) from comment #3)
What types of calendars?
ANd how many?
I'm not sure what the "type" of a calendar might be.
Eleven calendars:
- one US Holidays (read-only) calendar
- three with five years each with six months of repeats of scheduled classes
- five with occasional non-repetetive events
- one with several items per week for a few years
- one ("Home") calendar with most events
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Reporter | |
Comment 5•1 year ago
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FWIW, I've had all of these calendars (same configuration; same number of events, etc, modulo occasional additions in the last couple of months) for years now. This is the first time I've experienced such a slowdown. It happened immediately after the upgrade from 128.2.1esr (64-bit) to 128.2.3esr (64-bit).
Description
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