On Wed, 2011-04-27 at 19:25 +0100, Colin Ian King wrote: > Just like to add that I've seen almost identical issues with 2.6.38 > copying large amounts of data to an ext4 filesystem with systems with > small amounts of memory. > > I found that increasing /sys/fs/ext4/sdaX/max_writeback_mb_bump worked > around the issue. With the PREEMPT kernel, values of 256 and 512 don't prevent kswapd spinning up to 99% and staying there. James -- 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 internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>