Re: Firefox fat on Javascript?
[email protected] Thu, 12 May 2011 15:52:31 +0000
| Newsgroups | gmane.comp.mozilla.performance |
|---|---|
| Message-ID | <[email protected]> |
On Wed, 11 May 2011 01:27:01 -0400, Boris Zbarsky wrote: > On 5/10/11 11:59 PM, [email protected] wrote: >> [It seems reasonable for a browser to require at least 143 MiB of >> physical memory.] Maybe it is, but my intuition says otherwise; I doubt we will come to a satisfactory conclusion in this discussion, so we'll leave it at that. >> Surely the Laws of the Universe do not require 2/3 of my physical memory to >> run 3 different profiles of a goddamn web browser. Even Profile 0 seems a >> little rotund; I mean, FFS, that little guy alone uses enough memory to hold >> 16 fullscreen, 32-bit RGBA (that is, including alpha) dumps of my 1920x1200 >> resolution screen. WTF is Firefox doing? > > about:memory (especially with Nicholas Nethercote's recent changes) > should be able to tell you some of that. The data from about:memory for each firefox instance follows; for reference, here are the descriptions of the 3 instances (each of which runs a different profile): Profile Usage ------- ----- 0 Reading news (aggregators and otherwise), watching YouTube and other Flash video, making `First!' posts on slashdot, reading technical documentation, searching for everything via Google, editing Wikipedia, etc. I pretty much do a little bit of everything with this instance and spend most of my time on the web using it. 1 Basically just sitting there with one browser window opened to my Gmail account; I haven't been using it much lately... it has literally just sat there, unused with Gmail ticking in the background. 2 Running Vimperator with a few of [what I think are] relatively static pages just sitting there; maybe I'll make an occasional Google search, but it mainly goes unused. Profile 0: (heavy usage) Overview Memory mapped: 217,055,232 Memory in use: 159,548,300 Other Information Description Value malloc/allocated.......................159,551,508 malloc/mapped 217,055,232 malloc/committed.......................217,055,232 malloc/dirty 2,580,480 js/gc-heap..............................32,505,856 js/string-data 3,484,380 js/mjit-code...............................100,752 images/chrome/used/raw 0 images/chrome/used/uncompressed............179,680 images/chrome/unused/raw 0 images/chrome/unused/uncompressed................0 images/content/used/raw 893,214 images/content/used/uncompressed........11,330,676 images/content/unused/raw 809 images/content/unused/uncompressed...........1,024 storage/sqlite/pagecache 9,217,264 storage/sqlite/other.....................1,537,152 layout/all 3,936,739 layout/bidi....................................212 gfx/surface/image 79,112 content/canvas/..................................2 d_pixel_bytes 0 Profile 1: (Gmail) Overview Memory mapped: 367,001,600 Memory in use: 222,837,828 Other Information Description Value malloc/allocated.......................222,841,036 malloc/mapped 367,001,600 malloc/committed.......................367,001,600 malloc/dirty 2,351,104 js/gc-heap..............................97,517,568 js/string-data 6,139,150 js/mjit-code...............................531,503 storage/sqlite/pagecache 6,041,992 storage/sqlite/other.....................1,469,704 images/chrome/used/raw 0 images/chrome/used/uncompressed............146,880 images/chrome/unused/raw 0 images/chrome/unused/uncompressed................0 images/content/used/raw 214,097 images/content/used/uncompressed...........350,396 images/content/unused/raw 0 images/content/unused/uncompressed...............0 layout/all 2,782,929 layout/bidi....................................462 gfx/surface/image 56,428 Profile 2: (Vimperator) Overview Memory mapped: 429,916,160 Memory in use: 371,937,160 Other Information Description Value malloc/allocated.......................371,940,320 malloc/mapped 429,916,160 malloc/committed.......................429,916,160 malloc/dirty 2,019,328 js/gc-heap.............................136,314,880 js/string-data 4,804,338 js/mjit-code...............................229,488 images/chrome/used/raw 0 images/chrome/used/uncompressed............133,060 images/chrome/unused/raw 0 images/chrome/unused/uncompressed................0 images/content/used/raw 3,338,152 images/content/used/uncompressed........29,185,369 images/content/unused/raw 0 images/content/unused/uncompressed...............0 storage/sqlite/pagecache 4,865,440 storage/sqlite/other.....................1,574,456 layout/all 11,508,560 layout/bidi......................................0 gfx/surface/image 377,140 content/canvas/..................................2 d_pixel_bytes 1,342,336 P.S. For dubious reasons, Mailman munged the Message-ID of my last email, which was: [email protected] and before Mailman will munge the Message-ID of this email, it is: [email protected] If you add such munging to the fact that a user must subscribe to each mailing list before posting, then I can safely say that Mozilla has one of the worst communications infrastructures ever devised.