> 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, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>