Check in Chrome's built-in task manager - those additional processes are likely the browser extensions you have.

Unable to reproduce this issue on reported version 62.0.3202.94 chromium using windows 10 with steps mentioned below.

1. Launched chromium and opened almost 20 tabs.
2. Opened Windows task manager and observed only one chromium task
3. Opened Chrome task manager and observed no high CPU usage.

@Reporter:Could you please retry the scenario by removing all extensions.
If the issue stills persist, it would be great if you could provide chrome://gpu details and a "memory-infra" trace.
When the system gets in this state: Follow below steps 1) Navigate to about:tracing 2) hit "record" in the upper left 3) select ""manually select settings"" 4) Make sure all checkmarks are clear other than "memory-infra" in the right column 5) hit record and allow the trace to run for ~30s before stopping it. 6) save the trace (upper left-hand corner) and attach here

Thanks!

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>> Check in Chrome's built-in task manager - those additional processes are likely the browser extensions you have.

Okay, probably you are right, and probably these are extensions, but! But number of processes in Task Manager is not squared against number of tabs.
I snapshoted/screenshoted a certain time moment, when There were opened 17 tabs, 2 incognito tabs, and the total number of my extensions is nine.
Anyway 17 + 2 + 9 is not 32 (what we see in task manager).

Again, what consumption indicators can be treated as normal? 

Does number that are highlighted on my screenshoted are "normal"? GPU load seems excessive, as only text pages are opened without any flash animation or smth like this.

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Thank you for providing more feedback. Adding requester "sc00335628@techmahindra.com" to the cc list and removing "Needs-Feedback" label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Reporter, the built-in task manager in Chrome can be invoked from the browser menu or via Shift-Esc. It'll show all processes *actually* used by the browser, including GPU, extensions, plugins, tabs. It's customizable. You can compare the output to the system task manager and see if all processes are accounted for. 

OK, now I see that report from built-in task manager is correlated with Windows one.
We see here, that we have 26 tabs plus 9 extensions and we have 35 tabs in Win Task Manager.

It is novelty for me, that Browser itself and GPU are separate processes.
However, excesivve memory usage is still an issue. Will observe the situation further.

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@Reporter: Could you please send the tracing details by following steps mentioned in comment#3. This would help in further triaging of the issue.

Thanks!

>> Could you please send the tracing details by following steps mentioned in comment#3. This would help in further triaging of the issue.

Okay, I removed all the extension and retried the scenario. I opened 20+ tabs and measured the load. It was significantly less than previously, because of the lack of extensions I assume. BUT! But the number of tabs doesn't agree with number of processes anyway. 

Number of extensions is ZERO in this example, I wanna highlight, and we have 26 processes anyway.

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Adding the extensions to browser increases the load up to the sky, which is not normal.

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Thank you for providing more feedback. Adding requester "sc00335628@techmahindra.com" to the cc list and removing "Needs-Feedback" label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

chrome://gpu

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Memory trace

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As per Comment#12 & 13, reporter has provided GPU and memory trace related files

@Dev, can anyone from the dev team have a look at this issue

It is not an expectation to have a 1:1 correspondence between processes to tabs. Chrome will create different processes for different reasons. A selection of process types includes...
* The Browser Process
* gpu-process
* nacl-loader
* Renderer
* ppapi
* Utility
* Watcher
* and more.

Each process uses the same Chrome bootstrapper but may load different DLLs to get the job done.

The browser process shouldn't use more than a few hundred MB. If it's using a lot, that's a real bug.

A renderer's process usage is a function of the memory used by a website. A process consumes memory in an OS and the OS charges it to that process. When a website consumes memory, it's technically supposed to be charged to the website but it is charged to Chrome because the OS doesn't know about websites. It only knows about processes.

There is some work to reduce the number of active renderers running by discarding the tab. This is somewhat like (but not exactly like) terminating a process on the OS.

Hopefully this answers some questions about processes in Chrome.