961373 - about:healthreport's totalTime is not aware of SIGTSTP

Status: RESOLVED WONTFIX

(Firefox Health Report Graveyard :: Client: Desktop, enhancement)

Description

[unixway.drive+moz]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:26.0) Gecko/20100101 Firefox/26.0 (Beta/Release)
Build ID: 20140116224729

Steps to reproduce:

* Open about:healthreport page
* p=$(pidof firefox); kill -TSTP $p; sleep 5m; kill -CONT $p
* Refresh page


Actual results:

"time open" field has it's value increased by the amount of time browser spent in a stopped state.


Expected results:

"time open" value should not include such amounts of time.

Comment 1

[Gregory Szorc [:gps]]

You are right. But I don't think this is high priority.

This likely requires support at the platform level, since we'd need to read some /proc/self data structure to get the actual process alive time as opposed to computing it from wall time. If the underlying Gecko API for process time takes SIGTSTP into consideration, FHR will get this for nearly free.

bsmedberg: Can you help me triage this to the proper Gecko component?

Comment 2

[Benjamin Smedberg]

Since we're measuring wall-clock time here, time when the computer is sleeping or a particular process is stopped don't figure into it.