On Tue, 2007-02-06 at 20:38 +0200, Timo Sirainen wrote:
m: mmap_disable=yes f: fsync_disable=yes
imaptest clients=1 secs=30 Logi Sele Fetc Fet2 Stor Dele Expu Appe Disc m : 1502 1502 1501 1501 762 405 405 511 1501 : 1495 1495 1494 1494 780 407 407 513 1494 f+m : 1572 1572 1571 1571 802 439 439 534 1571 f : 1540 1540 1539 1539 770 416 416 517 1539
Except with 10 concurrent clients accessing the box, it does give a bit larger improvements:
imaptest clients=10 secs=30 seed=1 Logi Sele Fetc Fet2 Stor Dele Expu Appe Disc 1273 1272 1262 1262 633 493 493 1406 1263 m 1316 1315 1305 1305 659 509 508 1392 1305 f 1312 1311 1306 1304 650 494 493 1467 1301 f+m 1644 1641 1634 1633 769 728 727 1810 1634
Without fsync_disable=yes the values between mmap_disable=yes/no were pretty much the same, sometimes one was faster than the other.