(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Sat, 24 Feb 2018 03:56:38 +0000 bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=198913 > > Bug ID: 198913 > Summary: Swapping slows to about 20% of expected speed when > using multiple swap partitions on separate drives > (striping). > > ... > > Problems > 1) Linux's swap striping on nine drives performs at only 19.5% of the speed of > a memory-mapped file on a RAID 0 partition on the same nine drives. > 2) Linux's swap striping performs best with exactly four swap partitions and > performs almost as well with just three partitions. > Well that's interesting, thanks. Let's get this onto the mm developers' mailing list and perhaps someone will have a theory. And perhaps Hugh will have a think about it when he returns to the fold. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
