Perhaps we could take a nuanced version of this option... > Or we could not save dynamic iframes that are not visible.
…changing it to ‘Put a reasonable cap on the amount of history we store for invisible, dynamic iframes, using a fifo queue’? Mike. On Nov 13, 2013, at 2:09 PM, David Rajchenbach-Teller <dtel...@mozilla.com> wrote: > *** The problem > > We are currently faced with a problem on facebook.com (see bug 934935) > that brings Firefox to its knees because our session restore accumulates > huge amounts of dead data. This problem is most likely a Facebook bug, > and we are in touch with the Facebook team to see if they can address > it, but we are also thinking about counter-measures. > > The problem seems to be due to the combination of the following things: > - facebook.com uses huge URLs (1kb), presumably for some kind of > ad-tracking (annoying, but not a facebook bug); > - facebook.com opens iframes and never closes them (presumably a > facebook bug); > - facebook.com uses the history API to push states (which increases the > number of states that we need to save to disk). > > The net result is that users who spend lots of time on Facebook without > Adblock end up with thousands of (conceptually dead) iframes saved to > sessionstore.js, which is quite bad. > > > *** Discussions > > We could get rid of the issue by not saving dynamically generated > iframes to sessionstore.js. > > Or we could not save dynamic iframes that are not visible. > > Or we could not save dynamic iframes in non-current positions in the > history. > > etc. > > All of these choices would change the semantics of sessionstore.js and > would alter the user experience when reopening/recovering from crash on > some sites that make good use of dynamic iframes. > > I would like people's opinion on such changes or possible other > countermeasures. > > Cheers, > David > > > -- > David Rajchenbach-Teller, PhD > Performance Team, Mozilla > _______________________________________________ > dev-platform mailing list > dev-platform@lists.mozilla.org > https://lists.mozilla.org/listinfo/dev-platform
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