Closed
Bug 1145738
Opened 10 years ago
Closed 10 years ago
JS Tree View/Flamegraph sometimes doesn't render any frames
Categories
(DevTools :: Performance Tools (Profiler/Timeline), defect, P1)
Tracking
(Not tracked)
RESOLVED
WORKSFORME
People
(Reporter: jsantell, Assigned: jsantell)
References
Details
Can't consistently recreate this, but once it fails, it seems to fail until restart. It's like no profiler data exists.
Assignee | ||
Updated•10 years ago
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Blocks: perf-tool-v2
Updated•10 years ago
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Assignee | ||
Comment 1•10 years ago
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What happens is the profiler start time is X, and when we receive the samples from the back end, all the samples have times < X, so no samples are rendered. this is very bad. Maybe this only happens when you have the profiler running for awhile. All my sample profiles are only about 2-3 seconds long.
earliest time, latest time, profiler start time
3244051 - 3270404 - 3390269
3440575.5 - 3466624 - 3552771
3924127.5 - 3950841.5 - 4048497
Assignee | ||
Comment 2•10 years ago
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It seems as if some point, the profiler restarted, and gProfilerStartTime was not reset. Causing our profiler start time from startProfiler() (so Date.now() - gProfilerStartTime) to no longer match the internal timing used by profiler to match its samples.
Assignee | ||
Comment 3•10 years ago
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To clarify, with no toolboxes open or anything, and opening a new toolbox to start a new recording, the profiler is considered "active"
Assignee | ||
Comment 4•10 years ago
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This is more than a papercut - this makes all of the profiler literally unusable
Assignee | ||
Comment 5•10 years ago
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Seeing this in old profiler in Fx38 as well. I think it mostly happens with long running instances.
Assignee | ||
Comment 6•10 years ago
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Haven't seen this in awhile, but we need to keep an eye on this and ensure this doens't happenf or long running instances.
Assignee: nobody → jsantell
Priority: -- → P1
Updated•10 years ago
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Status: NEW → ASSIGNED
Assignee | ||
Comment 7•10 years ago
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Haven't seen this at all, luckily.. CLOSING
Status: ASSIGNED → RESOLVED
Closed: 10 years ago
Resolution: --- → WORKSFORME
Updated•6 years ago
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Product: Firefox → DevTools
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Description
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