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Issue metadata

Status: WontFix
Owner: ----
Closed: Apr 2018
Cc:
Components:
EstimatedDays: ----
NextAction: ----
OS: ----
Pri: 3
Type: Bug



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Trace Network Quality Estimator

Project Member Reported by benjhayden@chromium.org, Apr 20 2016

Issue description

Wow, NetworkQualityEstimator looks useful!
I wonder if it might be useful for tracing?
If a netlog event looks long, it might help speed up debugging to know that RTT was high or throughput was low.
Eventually, these estimations might even be useful for metrics.

Trace viewer would probably want to visualize this information as sparklines, not object snapshots. I'd need to dig to see how sparklines like memory usage are traced. Might be related to tracing UMA histograms.

 
Sorry, I do not have the context for this. What kind of tracing do we want to do?

Also, I thought NQE already has tracing enabled: https://code.google.com/p/chromium/codesearch#search/&q=f:estimator.cc%20TRACE_EVENT&ssfr=1&sq=package:chromium&type=cs
The RTT and throughput estimates might be useful to have in the trace log, in addition to trace events covering NQE's methods, and in addition to having the estimates in UMA.
No particular use cases need this yet. This came up in a discussion about parameterizing normalization functions for TBMv2 loading metrics as a nice-to-have-eventually.

ChartTrack in catapult looks like the appropriate UI base class.
Components: Internals>Network>NetworkQuality

Comment 4 by bengr@chromium.org, Mar 14 2017

Status: Available (was: Untriaged)

Comment 5 by bengr@chromium.org, Nov 8 2017

Refreshed during triage.
Refreshed during triage.
Refreshed during triage.
Is there any use cases that need this yet? Otherwise, it might just make sense to close this bug until any use cases that need it come up.
Status: WontFix (was: Available)
Lets reopen this if it's needed later. For now, it does not seem like NQE is consuming too many CPU cycles. 

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