Re: reminder: content processes (e10s) are now used by desktop Firefox
Asa Dotzler schrieb: We should evaluate, possibly through telemetry or FHR, how many users are seeing the e10s thumbnails and if that number is high, I think we'll want to change the criteria for when we go to the e10s thumbnails. I saw a bug in a recent triage that said we are (or have been) overwriting thumbnails created before with less useful background thumbnails. That might be just a real bug, though. :) Robert Kaiser ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
On 6/08/2013 2:30 AM, Robert Kaiser wrote: We also get worse thumbnails than before on pages that are basically just a big login screen when you aren't actually logged in. In the short-term, bug 897880 might help with that - it will arrange so that an error response (roughly, a non 2XX response) will not cause an existing thumbnail to be overwritten. Thus, any thumbnails taken while actually visiting the page (ie, by the foreground thumbnail service) should continue to be used. We make no attempt to handle sites using purely cookie-based auth (ie, sites that always return 200 responses, but still render a please log in page based purely on cookies). Also, I mention it may only help in the short-term as it seems possible we will end up removing the foreground service completely to avoid jank and keep all thumbnailing off the main thread/process. However, AFAIK there are no concrete plans for this. Cheers, Mark ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
Justin Lebar schrieb: It's a lot better than the page a) playing audio, b) spinning your cpu, or a) pwning you. True. Still, if this is a problem (there /are/ a lot of websites which are just one big flash object), I wonder if we could detect it. Yes, I worry about those pages that are one big Flash object, or about pages which have a video as the centerpiece or such. We also get worse thumbnails than before on pages that are basically just a big login screen when you aren't actually logged in. It's pretty hard to figure out the right thing to do in cases like that, I guess (esp. on the well, but private info can't be shown front). Robert Kaiser ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
On 8/5/2013 9:30 AM, Robert Kaiser wrote: Justin Lebar schrieb: It's a lot better than the page a) playing audio, b) spinning your cpu, or a) pwning you. True. Still, if this is a problem (there /are/ a lot of websites which are just one big flash object), I wonder if we could detect it. Yes, I worry about those pages that are one big Flash object, or about pages which have a video as the centerpiece or such. We also get worse thumbnails than before on pages that are basically just a big login screen when you aren't actually logged in. It's pretty hard to figure out the right thing to do in cases like that, I guess (esp. on the well, but private info can't be shown front). Robert Kaiser Private info can't be shown is not a hard requirement here -- at least that's not the position of the Product or Privacy teams. The issue we're solving for here is over-the-shoulder privacy and we've used a pretty big hammer that we may want to back off of some. We should evaluate, possibly through telemetry or FHR, how many users are seeing the e10s thumbnails and if that number is high, I think we'll want to change the criteria for when we go to the e10s thumbnails. - A ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
On 08/03/2013 10:28 PM, Mark Hammond wrote: On 3/08/2013 5:30 AM, Philip Chee wrote: On 02/08/2013 16:57, t...@adblockplus.org wrote: The code in question was explicitly running in Firefox Mobile only. It used messageManager.loadFrameScript() API to inject code into the content process of new tabs - I doubt that it will work the same here, Adblock Plus would probably need to look explicitly for these browser remote=true elements (is there an event when they are created?). Altogether, supporting this in Adblock Plus should be possible - but it will require significant amounts of additional code and introduce quite a bit of new complexity. I also have doubts whether this is work that should receive priority. It has just occurred to me that Flashblock would probably be affected similarly. We ask the docShell to not allow plugins or media - so no flash should be seen anyway (which obviously some will consider a bug, but there you have it) Note that until bug 874016 lands it is unsafe to use plugins in content processes. ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
Mark Hammond schrieb: We ask the docShell to not allow plugins or media So that means that for any page with a video or a big Flash/Java thing on it, I would get a completely wrong thumbnail? That's unfortunate. Robert Kaiser ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
On Sun, Aug 4, 2013 at 8:15 AM, Robert Kaiser ka...@kairo.at wrote: Mark Hammond schrieb: We ask the docShell to not allow plugins or media So that means that for any page with a video or a big Flash/Java thing on it, I would get a completely wrong thumbnail? That's unfortunate. It's a lot better than the page a) playing audio, b) spinning your cpu, or a) pwning you. All of which can happen if we run flash/java. :) Still, if this is a problem (there /are/ a lot of websites which are just one big flash object), I wonder if we could detect it. ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
On Wed, Jul 31, 2013 at 1:10 AM, Gavin Sharp ga...@gavinsharp.com wrote: Bug 870100 enabled use of the background thumbnail service in Firefox desktop, which uses a browser remote=true to do thumbnailing of pages in the background. That means that desktop Firefox now makes use of E10S content processes. They have a short life time (one page load) and are generally triggered by opening about:newtab when thumbnails are missing or out of date (2 days old). Besides the crashes, NSPR logging to a file is messed up because all the processes write to the same log file. See: https://developer.mozilla.org/en-US/docs/Mozilla/Debugging/HTTP_logging?redirectlocale=en-USredirectslug=HTTP_Logging#Creating_separate_logs_for_child_processes I think it is time to make GECKO_SEPARATE_NSPR_LOGS the default. Cheers, Brian ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
On 3/08/2013 5:30 AM, Philip Chee wrote: On 02/08/2013 16:57, t...@adblockplus.org wrote: The code in question was explicitly running in Firefox Mobile only. It used messageManager.loadFrameScript() API to inject code into the content process of new tabs - I doubt that it will work the same here, Adblock Plus would probably need to look explicitly for these browser remote=true elements (is there an event when they are created?). Altogether, supporting this in Adblock Plus should be possible - but it will require significant amounts of additional code and introduce quite a bit of new complexity. I also have doubts whether this is work that should receive priority. It has just occurred to me that Flashblock would probably be affected similarly. We ask the docShell to not allow plugins or media - so no flash should be seen anyway (which obviously some will consider a bug, but there you have it) Cheers, Mark ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
On 02.08.2013 03:35, Gavin Sharp wrote: The experiment you're referring to was Adblock running in Firefox with remote tabs enabled, I think. I'm not up to date with how that experiment was progressing, but I think there are some fundamental differences between that scenario and the background content processes being used for the background thumbnailing service that might not make the two cases directly comparable. It would be valuable for an adblockplus developer to investigate, certainly. Unless I missed something, this is about Adblock Plus supporting the original incarnation of Firefox Mobile, the one with two separate processes for chrome and content. This code is long gone in the current Adblock Plus versions - it was a real pain to support due to lots of unavoidable code duplication. The last version still having it is Adblock Plus 1.3.10. The code in question was explicitly running in Firefox Mobile only. It used messageManager.loadFrameScript() API to inject code into the content process of new tabs - I doubt that it will work the same here, Adblock Plus would probably need to look explicitly for these browser remote=true elements (is there an event when they are created?). Altogether, supporting this in Adblock Plus should be possible - but it will require significant amounts of additional code and introduce quite a bit of new complexity. I also have doubts whether this is work that should receive priority. ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
On 02/08/2013 03:50, Nicholas Nethercote wrote: On Thu, Aug 1, 2013 at 6:29 PM, Gavin Sharp ga...@gavinsharp.com wrote: Do you have specific issues you're worried about, or are you just speaking about issues in general? This AdBlock issue worries me specifically. And the fact that there's breakage with our #1 add-on makes me worry in general. Ads are particularly annoying when you are using a page, in a thumbnail that effect is quite mitigated or nonexistent. The only problematic thing seems to be the thumbnail appears different than the page you commonly see, so you may not recognize it visually. -m ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
We are working on ways to make add-ons like adblock work with e10s on desktop without major changes to the add-on. That mechanism might work for the thumbnail case. Gavin can reach out to trev and discuss whether this is something we should try to make work. I do agree this isn't super high priority right now though and we can live with this behavior for thumbnails. Using e10s for this is really cool and greatly improves responsiveness, after all. Andreas t...@adblockplus.org wrote: On 02.08.2013 03:35, Gavin Sharp wrote: The experiment you're referring to was Adblock running in Firefox with remote tabs enabled, I think. I'm not up to date with how that experiment was progressing, but I think there are some fundamental differences between that scenario and the background content processes being used for the background thumbnailing service that might not make the two cases directly comparable. It would be valuable for an adblockplus developer to investigate, certainly. Unless I missed something, this is about Adblock Plus supporting the original incarnation of Firefox Mobile, the one with two separate processes for chrome and content. This code is long gone in the current Adblock Plus versions - it was a real pain to support due to lots of unavoidable code duplication. The last version still having it is Adblock Plus 1.3.10. The code in question was explicitly running in Firefox Mobile only. It used messageManager.loadFrameScript() API to inject code into the content process of new tabs - I doubt that it will work the same here, Adblock Plus would probably need to look explicitly for thesebrowser remote=true elements (is there an event when they are created?). Altogether, supporting this in Adblock Plus should be possible - but it will require significant amounts of additional code and introduce quite a bit of new complexity. I also have doubts whether this is work that should receive priority. ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
On 02/08/2013 16:57, t...@adblockplus.org wrote: The code in question was explicitly running in Firefox Mobile only. It used messageManager.loadFrameScript() API to inject code into the content process of new tabs - I doubt that it will work the same here, Adblock Plus would probably need to look explicitly for these browser remote=true elements (is there an event when they are created?). Altogether, supporting this in Adblock Plus should be possible - but it will require significant amounts of additional code and introduce quite a bit of new complexity. I also have doubts whether this is work that should receive priority. It has just occurred to me that Flashblock would probably be affected similarly. Phil -- Philip Chee phi...@aleytys.pc.my, philip.c...@gmail.com http://flashblock.mozdev.org/ http://xsidebar.mozdev.org Guard us from the she-wolf and the wolf, and guard us from the thief, oh Night, and so be good for us to pass. ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
It's certainly worrying given the number of security- and privacy-related addons people rely on working. Seeing ads in thumbnails is relatively harmless (if disconcerting), but if someone is relying on an addon for important security or privacy reasons, and we auto-updated them and bypassed their protections, that's more serious. -Jeff - Original Message - From: Philip Chee philip.c...@gmail.com To: dev-platform@lists.mozilla.org Sent: Friday, August 2, 2013 12:30:29 PM Subject: Re: reminder: content processes (e10s) are now used by desktop Firefox On 02/08/2013 16:57, t...@adblockplus.org wrote: The code in question was explicitly running in Firefox Mobile only. It used messageManager.loadFrameScript() API to inject code into the content process of new tabs - I doubt that it will work the same here, Adblock Plus would probably need to look explicitly for these browser remote=true elements (is there an event when they are created?). Altogether, supporting this in Adblock Plus should be possible - but it will require significant amounts of additional code and introduce quite a bit of new complexity. I also have doubts whether this is work that should receive priority. It has just occurred to me that Flashblock would probably be affected similarly. Phil -- Philip Chee phi...@aleytys.pc.my, philip.c...@gmail.com http://flashblock.mozdev.org/ http://xsidebar.mozdev.org Guard us from the she-wolf and the wolf, and guard us from the thief, oh Night, and so be good for us to pass. ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
On 8/2/2013 1:52 PM, Jeff Gilbert wrote: It's certainly worrying given the number of security- and privacy-related addons people rely on working. Seeing ads in thumbnails is relatively harmless (if disconcerting), but if someone is relying on an addon for important security or privacy reasons, and we auto-updated them and bypassed their protections, that's more serious. -Jeff I think it's up to add-ons to keep up with Firefox, not the other way around. We give them no less than 3 months to adjust to our changes. Is that not enough time? - A ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
Gavin Sharp schrieb: This has exposed some e10s crashes that previously weren't exposed on desktop. I've filed https://bugzilla.mozilla.org/show_bug.cgi?id=899758 to track them - please hang any other such crashes off that bug. If you're working in a component that has e10s-related crashes, please fix them :) Note that all those crashes I have seen so far are actually crashes of the browser process, not just a content process, i.e. those crashes take down the whole browser! KaiRo ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
Could this be why I'm starting to see banner ads in some of my newtab-page snapshots, despite never seeing them in a tab? I don't appear to see this on an old nightly24 snapshot I have lying around. -Jeff - Original Message - From: Gavin Sharp ga...@gavinsharp.com To: dev-platform dev-platform@lists.mozilla.org Cc: firefox-dev firefox-...@mozilla.org Sent: Tuesday, July 30, 2013 4:10:34 PM Subject: reminder: content processes (e10s) are now used by desktop Firefox I've mentioned this at the engineering meeting, but thought it worth a note here just to ensure everyone is aware: Bug 870100 enabled use of the background thumbnail service in Firefox desktop, which uses a browser remote=true to do thumbnailing of pages in the background. That means that desktop Firefox now makes use of E10S content processes. They have a short life time (one page load) and are generally triggered by opening about:newtab when thumbnails are missing or out of date (2 days old). This has exposed some e10s crashes that previously weren't exposed on desktop. I've filed https://bugzilla.mozilla.org/show_bug.cgi?id=899758 to track them - please hang any other such crashes off that bug. If you're working in a component that has e10s-related crashes, please fix them :) (Bug 891218 is also planning to make use of content processes for some Social-related functionality. Those remote processes will be longer-lived, typically having the same lifetime as the parent process.) Gavin ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
Seems likely, I recall markh mentioning something similar - adblock probably doesn't work in the content process. Gavin On Thu, Aug 1, 2013 at 5:38 PM, Jeff Gilbert jgilb...@mozilla.com wrote: Could this be why I'm starting to see banner ads in some of my newtab-page snapshots, despite never seeing them in a tab? I don't appear to see this on an old nightly24 snapshot I have lying around. -Jeff - Original Message - From: Gavin Sharp ga...@gavinsharp.com To: dev-platform dev-platform@lists.mozilla.org Cc: firefox-dev firefox-...@mozilla.org Sent: Tuesday, July 30, 2013 4:10:34 PM Subject: reminder: content processes (e10s) are now used by desktop Firefox I've mentioned this at the engineering meeting, but thought it worth a note here just to ensure everyone is aware: Bug 870100 enabled use of the background thumbnail service in Firefox desktop, which uses a browser remote=true to do thumbnailing of pages in the background. That means that desktop Firefox now makes use of E10S content processes. They have a short life time (one page load) and are generally triggered by opening about:newtab when thumbnails are missing or out of date (2 days old). This has exposed some e10s crashes that previously weren't exposed on desktop. I've filed https://bugzilla.mozilla.org/show_bug.cgi?id=899758 to track them - please hang any other such crashes off that bug. If you're working in a component that has e10s-related crashes, please fix them :) (Bug 891218 is also planning to make use of content processes for some Social-related functionality. Those remote processes will be longer-lived, typically having the same lifetime as the parent process.) Gavin ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
On Thu, Aug 1, 2013 at 5:46 PM, Gavin Sharp ga...@gavinsharp.com wrote: Seems likely, I recall markh mentioning something similar - adblock probably doesn't work in the content process. That seems... less than ideal. I don't think creeping down the e10s path when all the e10s issues haven't yet been resolved is a good idea. Nick ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
On Thu, Aug 1, 2013 at 6:24 PM, Nicholas Nethercote n.netherc...@gmail.comwrote: On Thu, Aug 1, 2013 at 5:46 PM, Gavin Sharp ga...@gavinsharp.com wrote: Seems likely, I recall markh mentioning something similar - adblock probably doesn't work in the content process. That seems... less than ideal. I don't think creeping down the e10s path when all the e10s issues haven't yet been resolved is a good idea. Do you have specific issues you're worried about, or are you just speaking about issues in general? In general, I don't see us resolving e10s issues until we have some incentive to do so, and get some sense of their relative severity. Gavin ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
The experiment you're referring to was Adblock running in Firefox with remote tabs enabled, I think. I'm not up to date with how that experiment was progressing, but I think there are some fundamental differences between that scenario and the background content processes being used for the background thumbnailing service that might not make the two cases directly comparable. It would be valuable for an adblockplus developer to investigate, certainly. Gavin On Thu, Aug 1, 2013 at 6:28 PM, Robert O'Callahan rob...@ocallahan.org wrote: On Fri, Aug 2, 2013 at 1:24 PM, Nicholas Nethercote n.netherc...@gmail.comwrote: On Thu, Aug 1, 2013 at 5:46 PM, Gavin Sharp ga...@gavinsharp.com wrote: Seems likely, I recall markh mentioning something similar - adblock probably doesn't work in the content process. That seems... less than ideal. I don't think creeping down the e10s path when all the e10s issues haven't yet been resolved is a good idea. I thought AdBlock in particular we did have working with e10s. Maybe those changes haven't landed yet, or maybe it doesn't know about the hidden tabs where we load sites for thumbnailing. Rob -- Jtehsauts tshaei dS,o n Wohfy Mdaon yhoaus eanuttehrotraiitny eovni le atrhtohu gthot sf oirng iyvoeu rs ihnesa.rt sS?o Whhei csha iids teoa stiheer :p atroa lsyazye,d 'mYaonu,r sGients uapr,e tfaokreg iyvoeunr, 'm aotr atnod sgaoy ,h o'mGee.t uTph eann dt hwea lmka'n? gBoutt uIp waanndt wyeonut thoo mken.o w * * ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
On Thu, Aug 1, 2013 at 6:29 PM, Gavin Sharp ga...@gavinsharp.com wrote: Do you have specific issues you're worried about, or are you just speaking about issues in general? This AdBlock issue worries me specifically. And the fact that there's breakage with our #1 add-on makes me worry in general. In general, I don't see us resolving e10s issues until we have some incentive to do so, and get some sense of their relative severity. Huh? This sentence seems entirely antithetical to our standard operating procedure. I.e. backing out known regressions, etc. Nick ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
On Thu, Aug 1, 2013 at 6:50 PM, Nicholas Nethercote n.netherc...@gmail.com wrote: On Thu, Aug 1, 2013 at 6:29 PM, Gavin Sharp ga...@gavinsharp.com wrote: Do you have specific issues you're worried about, or are you just speaking about issues in general? This AdBlock issue worries me specifically. And the fact that there's breakage with our #1 add-on makes me worry in general. To be clear, the issue is that thumbnails don't have ABP enabled, not that ABP falls over in general. In general, I don't see us resolving e10s issues until we have some incentive to do so, and get some sense of their relative severity. Huh? This sentence seems entirely antithetical to our standard operating procedure. I.e. backing out known regressions, etc. It's a trade-off, right? You can have thumbnails with ABP that jank the browser, or you can have thumbnails without ABP that don't. (AIUI the oop business also fixes the issue where thumbnails showed private data, like bank account info. There are probably other things it fixes too.) Showing banner ads in the screencaps doesn't seem like a big deal to me compared to what we get in return... I guess the biggest issue from my perspective might be that we're allowing advertisers to track us, by making HTTP requests we otherwise wouldn't. Hopefully we send the cookies to /dev/null, but even still they get our IP. ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
On Thu, Aug 1, 2013 at 6:50 PM, Nicholas Nethercote n.netherc...@gmail.com wrote: Huh? This sentence seems entirely antithetical to our standard operating procedure. I.e. backing out known regressions, etc. What known regression are you referring to here? Ads on thumbnails? That seems like a much less serious problem than the one that background thumbnailing solves (thumbnails missing entirely). Obviously the crashes and such will need to get fixed, and we won't ship the feature until we're happy with its overall quality. But the feedback we're getting from it being enabled on Nightly is invaluable. Gavin ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
On 08/01/2013 06:50 PM, Nicholas Nethercote wrote: On Thu, Aug 1, 2013 at 6:29 PM, Gavin Sharp ga...@gavinsharp.com wrote: Do you have specific issues you're worried about, or are you just speaking about issues in general? This AdBlock issue worries me specifically. And the fact that there's breakage with our #1 add-on makes me worry in general. Without special support, addons won't see content in the remote thumbnail processes since they don't have access to the DOM there. We have been working on making Adblock and other addons work in other processes, but the code isn't ready to ship. In general, I don't see us resolving e10s issues until we have some incentive to do so, and get some sense of their relative severity. Huh? This sentence seems entirely antithetical to our standard operating procedure. I.e. backing out known regressions, etc. As far as I know, the only strict backout policy we have is for performance regressions on certain commonly accepted benchmarks. It would be impractical to backout any change that causes a regression in anything. I think decisions about the thumbnail code should be made on the merits of that code alone. Personally I think that the benefits of generating the thumbnails off the main thread outweigh the loss of ad blocking in the thumbnails. -Bill ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
reminder: content processes (e10s) are now used by desktop Firefox
I've mentioned this at the engineering meeting, but thought it worth a note here just to ensure everyone is aware: Bug 870100 enabled use of the background thumbnail service in Firefox desktop, which uses a browser remote=true to do thumbnailing of pages in the background. That means that desktop Firefox now makes use of E10S content processes. They have a short life time (one page load) and are generally triggered by opening about:newtab when thumbnails are missing or out of date (2 days old). This has exposed some e10s crashes that previously weren't exposed on desktop. I've filed https://bugzilla.mozilla.org/show_bug.cgi?id=899758 to track them - please hang any other such crashes off that bug. If you're working in a component that has e10s-related crashes, please fix them :) (Bug 891218 is also planning to make use of content processes for some Social-related functionality. Those remote processes will be longer-lived, typically having the same lifetime as the parent process.) Gavin ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
Do we run JS code in these? I can imagine all sorts of things that would cause a crash if JS code can invoke random dom apis. I however very happy that we are testing browser remote=true in a limited fashion with this. Tom On Tue, Jul 30, 2013 at 7:10 PM, Gavin Sharp ga...@gavinsharp.com wrote: I've mentioned this at the engineering meeting, but thought it worth a note here just to ensure everyone is aware: Bug 870100 enabled use of the background thumbnail service in Firefox desktop, which uses a browser remote=true to do thumbnailing of pages in the background. That means that desktop Firefox now makes use of E10S content processes. They have a short life time (one page load) and are generally triggered by opening about:newtab when thumbnails are missing or out of date (2 days old). This has exposed some e10s crashes that previously weren't exposed on desktop. I've filed https://bugzilla.mozilla.org/show_bug.cgi?id=899758 to track them - please hang any other such crashes off that bug. If you're working in a component that has e10s-related crashes, please fix them :) (Bug 891218 is also planning to make use of content processes for some Social-related functionality. Those remote processes will be longer-lived, typically having the same lifetime as the parent process.) Gavin ___ firefox-dev mailing list firefox-...@mozilla.org https://mail.mozilla.org/listinfo/firefox-dev ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
Yes, JS is enabled in the pages loaded by the background thumbnailing service (with JS disabled the thumbnails would likely not be very representative in a lot of cases). Gavin On Tue, Jul 30, 2013 at 5:05 PM, Tom Schuster t...@schuster.me wrote: Do we run JS code in these? I can imagine all sorts of things that would cause a crash if JS code can invoke random dom apis. I however very happy that we are testing browser remote=true in a limited fashion with this. Tom On Tue, Jul 30, 2013 at 7:10 PM, Gavin Sharp ga...@gavinsharp.com wrote: I've mentioned this at the engineering meeting, but thought it worth a note here just to ensure everyone is aware: Bug 870100 enabled use of the background thumbnail service in Firefox desktop, which uses a browser remote=true to do thumbnailing of pages in the background. That means that desktop Firefox now makes use of E10S content processes. They have a short life time (one page load) and are generally triggered by opening about:newtab when thumbnails are missing or out of date (2 days old). This has exposed some e10s crashes that previously weren't exposed on desktop. I've filed https://bugzilla.mozilla.org/show_bug.cgi?id=899758to track them - please hang any other such crashes off that bug. If you're working in a component that has e10s-related crashes, please fix them :) (Bug 891218 is also planning to make use of content processes for some Social-related functionality. Those remote processes will be longer-lived, typically having the same lifetime as the parent process.) Gavin ___ firefox-dev mailing list firefox-...@mozilla.org https://mail.mozilla.org/listinfo/firefox-dev ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
Re: reminder: content processes (e10s) are now used by desktop Firefox
On Tue, Jul 30, 2013 at 5:05 PM, Tom Schuster t...@schuster.me wrote: Do we run JS code in these? I can imagine all sorts of things that would cause a crash if JS code can invoke random dom apis. I however very happy that we are testing browser remote=true in a limited fashion with this. Tom Most of the content-exposed DOM APIs have to work out of process today for B2G, so I'm not sure why you'd expect them to crash. There are probably some fun exceptions like the ancient window.crypto APIs though. - Kyle ___ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
