Firefox in 2011 – Firefox plans for 2012

Posted Mar 14, 2012 15:18 UTC (Wed) by mpr22 (subscriber, #60784)
In reply to: Firefox in 2011 – Firefox plans for 2012 by xl0
Parent article: Firefox in 2011 – Firefox plans for 2012

Having read the fine linked article, I now have the impression that you didn't read the fine linked article.

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Firefox in 2011 – Firefox plans for 2012

Posted Mar 14, 2012 20:39 UTC (Wed) by valyala (guest, #41196) [Link] (2 responses)

There is also an interesting blog about memshrink progress in Firefox - http://blog.mozilla.com/nnethercote/category/memshrink/ .

Firefox in 2011 – Firefox plans for 2012

Posted Mar 15, 2012 19:51 UTC (Thu) by scientes (guest, #83068) [Link] (1 responses)

> However, until this week, this don’t-discard-it-immediately behaviour was also used when a tab is closed!

I don't exactly agree with the exclamation point, as I do alot of ctr-shift-t (restore previous tab), but I guess that already requires the whole page to be fetched and reloaded again.

Firefox in 2011 – Firefox plans for 2012

Posted Mar 16, 2012 9:26 UTC (Fri) by valyala (guest, #41196) [Link]

I suppose tab contents is restored from browser's cache if pages's caching policy allows this. Site's data can be either in RAM or already swapped out to persistent storage, but this is still faster than fetching the data from the internet.

As for the image data discarding, this means that browser discards only decoded pixels, while keeping the original encoded image in the cache. Since decoded pixels may occupy more than 10x memory comparing to the encoded image, smart image data discarding can significantly reduce browser's memory consumption. Read "#2: Better Foreground Tab Image Handling" at http://blog.mozilla.com/nnethercote/2012/01/25/memshrink-... for more details.