From bug 801799 we've established that temporary-analysis can be discarded more aggressively: > Remove the preliminary return in TypeCompartment::maybePurgeAnalysis, and > then the limit can be adjusted with the > javascript.options.mem.analysis_purge_mb setting. It looks like the default is 100MB (http://mxr.mozilla.org/mozilla-central/source/modules/libpref/src/init/all.js#744). For B2G that should be wound back significantly, though we should probably let bug 804891 land first before doing measurements.

Actually, let's just use bug 801799 for this.