What is included in "Idle" and "Other" times into Aggregated times pie-chart of timeline tab

[Srikumar B]

In this picture, What times are included for "Other" and "Idle"? How do i see the breakup of these "Other" and "Idle" on timeline tab?

[Jonathan Garbee]

Idle is just that, nothing was going on so nothing to worry about as far as I know.

Other is "un-instrumented activity". Which is stuff that currently isn't able to be broken down. So, you can't analyze what was going on in there from the DevTools.

These are covered in the DevTools Docs [1].

[1] https://developer.chrome.com/devtools/docs/timeline#about-clear-or-light-gray-frames

On Wed, Apr 8, 2015 at 2:19 PM, Srikumar B <sriku...@gmail.com> wrote:

In this picture, What times are included for "Other" and "Idle"? How do i see the breakup of these "Other" and "Idle" on timeline tab?

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[Sri]

Jonathan, Thanks for the reply. It is helpful.

From the frame-view, I see that some of "Other" entries are of Type "Update Counters" in my profile. What does it mean by?

Looking at this frame (shown in the picture), I dont know why a small chunks of grey colored bars aggregated to 590ms. Does all "Other" times are represented in bars?

Just in case, My timeline data is 6MB hence i compressed and attached here.

Thanks again for the reply

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-Sri

[Srikumar B]

I am sorry for bad alignment of the reply. Reattaching the screenshot with better quality Kindly reply.

[Alexei Filippov]

Hi Sri,

As Jonathan already pointed out Other refers to an activity not [yet] instrumented by DevTools.

The UpdateCounters events are not responsible for that. They are really tiny and actually were not supposed to be show on the flame chart at all.

I loaded your timeline into the latest Chrome Canary and can see that there are several network responses from doubleclick.net arrive during this timeframe. So I guess the uninstrumented time is spent in data retrieval and probably initiation of associated rasterizing tasks. See the screenshot http://grab.by/GgQM

Cheers,

Alexei

On Wed, Apr 8, 2015 at 10:21 PM, Srikumar B <sriku...@gmail.com> wrote:

I am sorry for bad alignment of the reply. Reattaching the screenshot with better quality Kindly reply.

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[Srikumar B]

Thanks Alexei.

As you and Jonathan said, "Other" is "not instrumented" times and "Idle" is browser idle time(no activity).

If so, How Dev-tools calculate "Idle time" by separating from "Other (not instructed times)"?

[Jonathan Garbee]

The DevTools can tell when the CPU is doing something (un-instrumented) compared to when it isn't the thing being waited on (GPU most likely) for idle.

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[Paul Irish]

I spent some time looking at this. 

All of these gaps are right after the HTML payload of an iframe is returned. 

It appears we're doing a synchronous IPC to grab cookies for the upcoming network request from that iframe'd page.

Trace attached if anyone is interested.  One of these 100ms gaps is located at 29360ms.