> BEHAVIOR CHANGE > =============== > > Users will notice that the applications will get throttled once the > crossing the global (background + dirty)/2=15% threshold. For a single > "cp", it could be soft throttled at 2*bdi->write_bandwidth around 15% s/2/8/ Sorry, the initial soft throttle bandwidth for "cp" is about 8 times of bdi bandwidth when reaching 15% dirty pages. > dirty pages, and be balanced at speed bdi->write_bandwidth around 17.5% > dirty pages. Before patch, the behavior is to just throttle it at 17.5% > dirty pages. > > Since the task will be soft throttled earlier than before, it may be > perceived by end users as performance "slow down" if his application > happens to dirty more than ~15% memory. -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
