https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=242747
--- Comment #11 from Conrad Meyer <c...@freebsd.org> --- Yeah, I suspect NCPU threads per disk across 8 disks is not really a great default! geli's ncpu default is probably reasonable for single-disk laptops, but doesn't factor in larger arrays. threads=2 x 8 disks gets you to 16, or the number of real cores. IIRC Epyc has only 128-bit wide vector units internally, but I don't see how that would affect aesni(4); AES itself is a 128-bit cipher, and the aesni(4) driver only uses SSE intrinsics, which act on 128-bit vectors. It may simply have fewer vector units and attempting to use 32 of them at the same time contests for shared resources. -- You are receiving this mail because: You are the assignee for the bug. _______________________________________________ freebsd-geom@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-geom To unsubscribe, send any mail to "freebsd-geom-unsubscr...@freebsd.org"
