In Firefox 13, the cycle collector is more efficient, spending less time examining memory that is still in use, which results in less pauses as you use Firefox. This action reduces Firefox’s memory usage. The Firefox cycle collector works to automatically free some of this memory when it is no longer needed. Cycle CollectorĪs you interact with the browser and Web content, memory is allocated as needed. This results in Firefox starting faster as tabs-on-demand reduces processing requirements, network usage, and memory consumption. Loading of background tabs is deferred until a tab is selected. In Firefox 13, only the active tab will load.
For windows with many tabs this may cause a delay before you can interact with Firefox as each tab must load its content. In Firefox 12, all tabs are loaded on start-up. Tabs-on-demand is a feature that reduces start-up time for Firefox windows with many tabs. Currently in beta, this release includes a number of responsiveness related fixes, most notably tabs-on-demand, cycle collector improvements, and start-up optimization. Project Snappy kicked off at the end of the year with the goal of improving Firefox responsiveness.Īlthough Snappy first contributed fixes to Firefox 11, Snappy’s most noticeable contributions to date are landing with Firefox 13. We identified a number of short term projects that together could achieve significant responsiveness improvements in day-to-day Firefox usage. Back in the fall of 2011, we took a targeted look at Firefox responsiveness issues.
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