![memory leak in firefox memory leak in firefox](https://uploads-us-west-2.insided.com/webroot-en/attachment/37062i6885DDA1EBC2EBC5.png)
- Memory leak in firefox how to#
- Memory leak in firefox Patch#
- Memory leak in firefox code#
- Memory leak in firefox series#
If you're are a C++ programmer and want to help diagnose or fix bugs, check out Performance:Leak_Tools along with David Baron's screencasts, and hang out in #developers on. When Firefox exits, it will print a detailed but understandable summary of what types of objects leaked. mozconfig option "-enable-logrefcnt" (or build debug) and run your build with XPCOM_MEM_LEAK_LOG=2. If you're an advanced user, you can do something similar with with trace-refcnt, which detects leaks of all reference-counted objects, not just windows and documents.
Memory leak in firefox how to#
If it reports that documents or windows leaked, try to figure out how to reproduce the leak and then file a bug report. If you're a Firefox user, an easy way to help is to browse with a trunk nightly build wrapped in a script that calls when Firefox exits. You don't have to be a C++ programmer to help find leaks in Firefox.
Memory leak in firefox code#
(This led me to find several bugs in evalcx, but no additional leaks.)ĭavid Baron got the stack walking code and the stack fixer working on Mac, making it possible to use trace-malloc and the refcount balancer on Mac ( bug 336517, bug 392118).
![memory leak in firefox memory leak in firefox](https://i.stack.imgur.com/bpjVc.png)
![memory leak in firefox memory leak in firefox](http://cybernetnews.com/wp-content/uploads/2007/08/firefoxmemoryleak.jpg)
Memory leak in firefox Patch#
I asked him to modify his patch so I could use jsfunfuzz to test for JavaScript Engine leaks, and he did. Igor Bukanov responded quickly with not only a patch for the bug but also a leak detection patch to enable regression testing of JavaScript Engine leaks. Kris Zyp found a leak in the JavaScript Engine when using the watch method ( bug 394709). Later, he tested the top 20 Firefox extensions and found leaks in several of them.ĭavid Baron recorded seven leak debugging screencasts, which you can watch to see how David Baron debugs real leaks. Steve England tested the top 500 web sites, finding two leaks. With this code, DEBUG_CC builds of Firefox can notice when an object "expected to be garbage" is not collected and then explain in detail why it was not collected.
Memory leak in firefox series#
See LeakingPages and bug 394517 for details.ĭavid Baron created a series of patches to the cycle collector to aid in debugging leaks. Robert has caught at least 6 distinct leak bugs using this script, 3 of which have already been fixed. The script detects leaks using trace-refcnt, the same test used by RL future versions might use trace-malloc in order to catch additional leaks. The random URLs come from the Yahoo directory (biased toward older, top-level pages), (biased toward newer, geeky pages), and AltaVista (biased toward pornography). Robert Sayre created a script to load random pages and see whether they cause leaks. Since this test runs on Tinderbox, it's likely that regressions will be noticed quickly, even if they don't turn Tinderbox orange. Memory leaksĭavid Baron checked in a patch for the last bug that contributed to RLk on Linux, bringing the number of XPCOM objects leaked during this test to zero.
![memory leak in firefox memory leak in firefox](http://blog.mozilla.org/hacks/files/2012/11/leak-gc-events.png)
When I pointed out the bug to Brendan Eich, he excitedly assigned the bug to himself.Įli Friedman discovered that nsFloatCache was no longer necessary and eliminated most of it ( bug 381385). The patch will make image data join text runs in using time-based caching rather than traditional space-bounded caching.Īaron suggested having an "about:memory" page showing a breakdown of Firefox's memory use ( bug 392351). ImageLib module owner Stuart Parmenter experimented with a competing idea in bug 386377, but now he plans to help with Federico's patch. Memory usageįederico Mena-Quintero submitted a patch to make Firefox discard decompressed image data after five seconds ( bug 296818). Hopefully, the result of this effort will be that Firefox 3 uses less memory than Firefox 2 did, especially after it has been used for several hours. Many Mozilla community members, including both volunteers and Mozilla Corporation employees, have been helping to reduce Firefox's memory usage and fix memory leak bugs lately.