Date: Tue, 20 May 2008 20:27:03 +0800 From: Warren Guy <warren.guy@calorieking.com> To: freebsd-scsi@freebsd.org Subject: Very poor performance from Dell/LSI Logic SAS 3000 series SATA/SAS RAID controller FreeBSD 6.3 Message-ID: <4832C397.3090004@calorieking.com>
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Hi,
We have a few recently acquired Dell Poweredge SC440 machines in our offi=
ce
running FreeBSD 6.3 that are experiencing very poor disk performance. The=
RAID
controller they are supplied with appears to be an "LSI Logic SAS 3000 Se=
ries".
There are two 250GB SATA disks in RAID 1 configuration. 6-7MB/s seems to =
be the
best I can get out of them. A Linux 2.6 machine with identical hardware a=
nd
disk/controller configuration exhibits no such performance impediments.
Any information or pointers are greatly appreciated.
bonnie++ output:
Version 1.93c ------Sequential Output------ --Sequential Input- --R=
andom-
Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --S=
eeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /s=
ec %CP
eva.internal 300M 306 99 6722 1 5591 1 533 99 +++++ +++ 23=
59 37
Latency 26715us 157ms 2193ms 25385us 808us 38=
52us
Version 1.93c ------Sequential Create------ --------Random Create--=
------
eva.internal -Create-- --Read--- -Delete-- -Create-- --Read--- -De=
lete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /s=
ec %CP
16 4572 11 +++++ +++ +++++ +++ 3019 7 +++++ +++ 283=
67 40
Latency 1277ms 23us 33us 1396ms 92us 3=
17ms
1.93c,1.93c,eva.internal,1,1211281869,300M,,306,99,6722,1,5591,1,533,99,+=
++++,+++,2359,37,16,,,,,4572,11,+++++,+++,+++++,+++,3019,7,+++++,+++,2836=
7,40,26715us,157ms,2193ms,25385us,808us,3852us,1277ms,23us,33us,1396ms,92=
us,317ms
and bonnie++ from the Linux 2.6 machine:
Version 1.03 ------Sequential Output------ --Sequential Input- --R=
andom-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --S=
eeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /s=
ec %CP
webvms 300M 41255 78 114551 26 565402 88 52867 94 +++++ +++ +=
++++ +++
------Sequential Create------ --------Random Create--=
------
-Create-- --Read--- -Delete-- -Create-- --Read--- -De=
lete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /s=
ec %CP
16 3571 95 +++++ +++ +++++ +++ 3543 92 +++++ +++ 107=
87 82
webvms,300M,41255,78,114551,26,565402,88,52867,94,+++++,+++,+++++,+++,16,=
3571,95,+++++,+++,+++++,+++,3543,92,+++++,+++,10787,82
uname:
FreeBSD eva.internal 6.3-RELEASE-p1 FreeBSD 6.3-RELEASE-p1 #0: Wed Feb 13=
02:56:56 UTC 2008 root@i386-builder.daemonology.net:/usr/obj/usr/src/=
sys/SMP
i386
from dmesg:
CPU: Intel(R) Xeon(R) CPU 3050 @ 2.13GHz (2128.01-MHz 686-cla=
ss CPU)
real memory =3D 2145894400 (2046 MB)
avail memory =3D 2090598400 (1993 MB)
=2E..
mpt0: <LSILogic SAS/SATA Adapter> port 0xdc00-0xdcff mem
0xefdec000-0xefdeffff,0xefdf0000-0xefdfffff irq 16 at device 8.0 on pci2
mpt0: [GIANT-LOCKED]
mpt0: MPI Version=3D1.5.13.0
mpt0: mpt_cam_event: 0x16
mpt0: Unhandled Event Notify Frame. Event 0x16 (ACK not required).
mpt0: mpt_cam_event: 0x12
mpt0: Unhandled Event Notify Frame. Event 0x12 (ACK not required).
mpt0: mpt_cam_event: 0x12
mpt0: Unhandled Event Notify Frame. Event 0x12 (ACK not required).
mpt0: mpt_cam_event: 0x16
mpt0: Unhandled Event Notify Frame. Event 0x16 (ACK not required).
=2E..
da0 at mpt0 bus 0 target 0 lun 0
da0: <Dell VIRTUAL DISK 1028> Fixed Direct Access SCSI-5 device
da0: 300.000MB/s transfers, Tagged Queueing Enabled
da0: 237464MB (486326272 512 byte sectors: 255H 63S/T 30272C)
pciconf:
mpt0@pci2:8:0: class=3D0x010000 card=3D0x1f091028 chip=3D0x00541000 rev=3D=
0x01 hdr=3D0x00
vendor =3D 'LSI Logic (Was: Symbios Logic, NCR)'
device =3D 'SAS 3000 series, 8-port with 1068 -StorPort'
class =3D mass storage
subclass =3D SCSI
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