Randy Schultz wrote:
> Hi there,
>
> We just purchased a Dell 860 with these specifics:
> - dual core pentium 915, 2.8 GHz, 800MHz FSB
> - 2x512 MB 533 MHz DDR2 RAM
> - Dell's SAS/SATA drive controller(which is actually an LSILogic)
> - their 5IR PCI-Express internal RAID controller
> - a pair of 250 GB SATA II's set up RAID 1
>
> After installing 6.2-RELEASE on the system I noticed, while pulling the
> ports
> collection off the CDROM, that the speed to the drives started out just
> fine
> but long before the ports collection was installed the transfer rate
was
> down
> to ~35kB/s. Huh. So I started paying closer attention. I installed a
> couple
> of ports and every time there was anything but miniscule data being
> transferred to/from disk the transfer rate bottomed out. I
installed the
> blogbench port and it confirmed the I/O as tremendously sluggish. I've
> attached the output of the blogbench runs. The first is from an old
700
> MHz
> pc, Acer M25C mobo, with 1 IDE drive just for comparison. The second
> data set
> is the new Dell. I've also attached the output of dmesg.
Everything looks
> fine except for the mpt lines. Would those be telling of something
> amiss or
> are they innocuous barks?
>
> I understand that RAID 1 is not the fastest but I certainly expected it
> to be
> faster than it is, esp. with hw RAID. Are my expectations too high and
> this
> is normal?
>
> --
<SNIP>
From the boot messages you have included below it seems that you have a
Dell SAS-5i (Internal PCIe) controller and not a Perc/5[ie].
The SAS-5 known to have very poor performance (1Mb/s 100%busy) under
certain loads (cvsup).
I have CC'd the author of the mpt driver (Matthew Jacob) as he may be
able to shed more light on the problem and time frame to resolution.
Tom
>
> Copyright (c) 1992-2007 The FreeBSD Project.
> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993,
1994
> The Regents of the University of California. All rights
reserved.
> FreeBSD is a registered trademark of The FreeBSD Foundation.
> FreeBSD 6.2-STABLE #0: Mon May 7 20:16:35 EDT 2007
> [EMAIL PROTECTED]:/usr/obj/usr/src/sys/maxu.070507
> Timecounter "i8254" frequency 1193182 Hz quality 0
> CPU: Intel(R) Pentium(R) D CPU 2.80GHz (2800.11-MHz 686-class CPU)
> Origin = "GenuineIntel" Id = 0xf64 Stepping = 4
>
Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36
> ,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
> Features2=0xe49d<SSE3,RSVD2,MON,DS_CPL,EST,CNTX-ID,CX16,<b14>,<b15>>
> AMD Features=0x20100000<NX,LM>
> AMD Features2=0x1<LAHF>
> Cores per package: 2
> real memory = 1073479680 (1023 MB)
> avail memory = 1041326080 (993 MB)
> ACPI APIC Table: <DELL PE_SC3 >
> FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
> cpu0 (BSP): APIC ID: 0
> cpu1 (AP): APIC ID: 1
<SNIP>
> mpt0: <LSILogic SAS/SATA Adapter> port 0xec00-0xecff mem
0xfeafc000-0xfeafffff,0xfeae0000-0xf
> eaeffff irq 16 at device 8.0 on pci2
> mpt0: [GIANT-LOCKED]
> mpt0: MPI Version=1.5.13.0
> 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).
<SNIP>
> 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)