Sequence-view in chrome://tracing?

[Gabriel Charette]

Hey guys,

I was chatting with someone in Waterloo last week (don't remember name :-S) and they asked whether we would integrate some sort of "sequence view" in chrome://tracing now that we're moving from dedicated threads to sequences on TaskScheduler.

I think that would be awesome. TaskScheduler tasks are already tagged with metadata which includes "SequenceToken" but it'd be even better if a view could be toggled to see all tasks in the same sequence on a single line.

Could that also make sense for the Blink scheduler? (even though its sequences are all funneled to single thread).

I have no idea how to do this but would love to see it happen :)

Gab

[Alex Clarke]

On 29 November 2016 at 16:17, Gabriel Charette <g...@chromium.org> wrote:

Hey guys,

I was chatting with someone in Waterloo last week (don't remember name :-S) and they asked whether we would integrate some sort of "sequence view" in chrome://tracing now that we're moving from dedicated threads to sequences on TaskScheduler.

I think that would be awesome. TaskScheduler tasks are already tagged with metadata which includes "SequenceToken" but it'd be even better if a view could be toggled to see all tasks in the same sequence on a single line.

Could that also make sense for the Blink scheduler? (even though its sequences are all funneled to single thread).

Possibly it could.  Despite there only being 1 main thread, there might be 100+ task queues each of which has their own sequence.

 

I have no idea how to do this but would love to see it happen :)

Gab

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[Sami Kyostila]

That's not a bad idea. Not sure how easy it is to implement since a lot of about:tracing is built around the trace model, which is very process/thread-centric.

Note that it's also pretty easy to write a new component for visualizing state snapshots dumped by TaskScheduler if you want to build something more custom.

- Sami

ti 29. marraskuuta 2016 klo 16.27 'Alex Clarke' via task-scheduler-dev <task-sche...@chromium.org> kirjoitti:

On 29 November 2016 at 16:17, Gabriel Charette <g...@chromium.org> wrote:

Hey guys,

I was chatting with someone in Waterloo last week (don't remember name :-S) and they asked whether we would integrate some sort of "sequence view" in chrome://tracing now that we're moving from dedicated threads to sequences on TaskScheduler.

I think that would be awesome. TaskScheduler tasks are already tagged with metadata which includes "SequenceToken" but it'd be even better if a view could be toggled to see all tasks in the same sequence on a single line.

Could that also make sense for the Blink scheduler? (even though its sequences are all funneled to single thread).

Possibly it could.  Despite there only being 1 main thread, there might be 100+ task queues each of which has their own sequence.

 

I have no idea how to do this but would love to see it happen :)

Gab

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