Bug 1347174 - per comment 10, limit the readahead size to prevent cache thrashing. r=cpearce

MozReview-Commit-ID: Ellinh8JIYE

--HG--
extra : rebase_source : 8f63ba1fd29e631cdafd5e56dbab958e7b044f0f
extra : intermediate-source : 0fe99aa9945fa33925a7885643af92bc007c338b
extra : source : f729d3953b822b5ecc208b46ac9fc0505aa69332

modules/libpref/init/all.js

@@ -296,11 +296,11 @@ pref("media.dormant-on-pause-timeout-ms", 5000);
 pref("media.cache_size", 512000);
 // When a network connection is suspended, don't resume it until the
 // amount of buffered data falls below this threshold (in seconds).
-pref("media.cache_resume_threshold", 999999);
+pref("media.cache_resume_threshold", 30);
 // Stop reading ahead when our buffered data is this many seconds ahead
 // of the current playback position. This limit can stop us from using arbitrary
 // amounts of network bandwidth prefetching huge videos.
-pref("media.cache_readahead_limit", 999999);
+pref("media.cache_readahead_limit", 60);
 
 // Master HTML5 media volume scale.
 pref("media.volume_scale", "1.0");