https://bugzilla.kernel.org/show_bug.cgi?id=15688 Albert Strasheim <fullung@xxxxxxxxx> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |fullung@xxxxxxxxx --- Comment #7 from Albert Strasheim <fullung@xxxxxxxxx> 2010-04-29 08:35:27 --- I've been seeing a similar issue with a LSI 1068 connected to a Sun J4400 JBOD. Solaris can drive a single 4-port PHY (12Gb/s) at about 1000 MB/sec but Linux maxes out at 830 MB/sec running 2.6.32 included with RHEL 6 beta. As I write to more disks at the same time, the throughput (MB/sec) per disk starts dropping after the 7th disk: #disks thruput tpdelta tp/disk expected tp 1 82 0 82.00 82 2 165 83 82.50 164 3 248 83 82.67 246 4 331 83 82.75 328 5 413 82 82.60 410 6 494 81 82.33 492 7 578 84 82.57 574 8 623 45 77.88 656 9 643 20 71.44 738 10 659 16 65.90 820 11 671 12 61.00 902 12 681 10 56.75 984 I'll do some tests with 4.22.00.00 now. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
