Using system proxy settings slows down firefox
Categories
(Core :: Networking, defect, P2)
Tracking
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People
(Reporter: pbone, Assigned: mayhemer)
Details
(Keywords: perf, regression, Whiteboard: [necko-triaged])
I saw reports of this from reddit when 64 hit the release channel. I assumed it had been reported/would be fixed, but just now discovered that my wife's computer had this problem.
By default Firefox is set to "Use system proxy settings" but that slows down many many pageloads. Is this something we've seen in telemetry? By switching to "No proxy" page loading has seemed to double in performance.
Reporter | ||
Updated•6 years ago
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Assignee | |
Comment 1•6 years ago
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We know that there is one round trip between the proxy resolution thread and the main thread on the parent process for every request (see bug 1392272.) But I would not expect that to be that significant.
What platform and what settings are there for proxy?
Just in case, would you be willing to capture a log? https://developer.mozilla.org/en-US/docs/Mozilla/Debugging/HTTP_logging
Thanks.
Updated•6 years ago
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Reporter | ||
Comment 2•6 years ago
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(In reply to Honza Bambas (:mayhemer) from comment #1)
We know that there is one round trip between the proxy resolution thread and the main thread on the parent process for every request (see bug 1392272.) But I would not expect that to be that significant.
What platform and what settings are there for proxy?
amd64, Windows 10.
My partner read out the settings she could see on the screen in windows 10, my memory was that nothing in particular was selected regarding windows. and firefox was set to "Use system settings". I'll seek screenshots.
Just in case, would you be willing to capture a log? https://developer.mozilla.org/en-US/docs/Mozilla/Debugging/HTTP_logging
I'll see what I can do, but she did capture a perf.html profile:
Updated•6 years ago
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Comment 3•6 years ago
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Paul, were you able to capture the necko log?
Reporter | ||
Comment 4•6 years ago
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Hi Andrew,
I'll try to make some time with my partner to do this tomorrow. We ment to do it earlier but it slipped my mind.
Comment 5•6 years ago
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The priority flag is not set for this bug.
:selenamarie, could you have a look please?
Comment 6•6 years ago
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Ping :pbone for a necko log. :)
Reporter | ||
Comment 7•6 years ago
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My partner is capturing the logs now. She's testing by opening facebook.com which is "an especially slow site". Will it capture her cookies or other important info?
Thanks.
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Assignee | |
Comment 8•6 years ago
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(In reply to Paul Bone [:pbone] from comment #7)
My partner is capturing the logs now. She's testing by opening facebook.com which is "an especially slow site". Will it capture her cookies or other important info?
Thanks. And YES - it will. Send the log to my bugzilla email rather than exposing it here. Thanks.
Updated•6 years ago
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Reporter | ||
Comment 9•6 years ago
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Sent. thanks.
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Assignee | |
Updated•6 years ago
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Reporter | ||
Comment 10•6 years ago
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Honza has requested some more data via e-mail, this NI is to remind me to provide that (it'll be a couple of days).
Comment 11•6 years ago
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Paul, Honza, What is the status of this regression now? Thanks
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Assignee | |
Comment 12•6 years ago
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(In reply to Pascal Chevrel:pascalc from comment #11)
Paul, Honza, What is the status of this regression now? Thanks
I asked Paul for more info. The problem is visible in the log I was given so far, but the cause is not.
Reporter | ||
Comment 13•6 years ago
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Sorry, this stalled with me. I'll make some time for it on monday.
Reporter | ||
Comment 14•6 years ago
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I provided more info to Honza offline, but wasn't able to reproduce the bug this time so maybe the underlying cause was fixed recently.
Updated•6 years ago
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Assignee | |
Comment 15•6 years ago
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closing for lack of data and irreproducibility.
Description
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