----- Original Message -----
From: "Abdullah Ibn Hamad Al-Marri" <[EMAIL PROTECTED]>
To: "Eduardo Meyer" <[EMAIL PROTECTED]>
Cc: <freebsd-stable@freebsd.org>; "Tim Daneliuk" <[EMAIL PROTECTED]>;
"Dan Nelson" <[EMAIL PROTECTED]>; "FreeBSD Mailing List"
<[EMAIL PROTECTED]>; "Marc G. Fournier" <[EMAIL PROTECTED]>
Sent: Thursday, July 26, 2007 4:50 PM
Subject: Re: SATA 300 Drive Being Run At 150
On 7/26/07, Eduardo Meyer <[EMAIL PROTECTED]> wrote:
On 7/22/07, Jeremy Chadwick <[EMAIL PROTECTED]> wrote:
> On Sun, Jul 22, 2007 at 12:10:12AM -0300, Marc G. Fournier wrote:
> > 'k, I just bought a new desktop, SATA/300MB/s interface, and this
> > drive:
> >
> > <http://www.wdc.com/en/products/products.asp?DriveID=254>
> >
> > Web site states 3Gb/s ... I'm seeing same SATA!50:
>
> Seagate and WDC both ship SATA300 drives with a SATA150-limiting jumper
> on them. It's documented on the drive itself, and in the manufacturing
> manuals. Both companies do this as a precaution; there are some buggy
> chipsets out there which claim to support SATA300 but then break badly
> when utilising it. This is why the jumper's set to SATA150 by default.
>
> Chances are your drives have the jumper limiting the drive to SATA150.
I have the same situation here, but not the same hardware:
atapci0: <Intel ICH7 SATA300 controller> port
0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0x3020-0x302f mem
0xe8200000-0xe82003ff irq 19 at device 31.2 on pci0
ad0: 76319MB <SAMSUNG HD080HJ ZH100-47> at ata0-master SATA150
This drive is withtout the jumper, which according to the manual means
it should operate as SATA300 (while with jumper plugged, it is limited
to SATA150). But it is only controlled as SATA150.
So, chances are my disc also have some problem?
--
===========
Eduardo Meyer
pessoal: [EMAIL PROTECTED]
profissional: [EMAIL PROTECTED]
Here is me too.
FreeBSD services.wearab.net 7.0-CURRENT FreeBSD 7.0-CURRENT #2: Tue
Jul 24 05:07:02 GMT 2007
[EMAIL PROTECTED]:/usr/obj/usr/src/sys/SERVICES amd64
ACPI APIC Table: <INTEL D946GZIS>
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz (2397.61-MHz K8-class
CPU)
Origin = "GenuineIntel" Id = 0x6f6 Stepping = 6
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=0xe3bd<SSE3,RSVD2,MON,DS_CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM>
AMD Features=0x20100800<SYSCALL,NX,LM>
AMD Features2=0x1<LAHF>
Cores per package: 2
usable memory = 2130096128 (2031 MB)
avail memory = 2055856128 (1960 MB)
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
atapci0: <Intel ICH7 SATA300 controller> port
0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0x20a0-0x20af mem
0x90200000-0x902003ff irq 19 at device 31.2 on pci0
ata0: <ATA channel 0> on atapci0
ata0: [ITHREAD]
ata1: <ATA channel 1> on atapci0
ata1: [ITHREAD]
ad0: 70911MB <WDC WD740ADFD-60NLR1 20.07P20> at ata0-master SATA150
ad2: 238474MB <WDC WD2500JD-50FYB0 02.05D02> at ata1-master SATA150
SMP: AP CPU #1 Launched!
Trying to mount root from ufs:/dev/ad0s1a
--
Regards,
-Abdullah Ibn Hamad Al-Marri
Arab Portal
http://www.WeArab.Net/
Running at SATA1 instead of SATA2 speeds I really think is hardware related.
To be honest I wouldn't worry about it if I was you. You're not going to get
more than 90MB/s off the platters on a good day anyways so the bus speed
isn't going to slow anything down.
I've got 2 RAID-0 arrays with 4 drives each. 64k stripe size. One array is
SATA1 and the other is SATA2. I get the same read/write speeds to each array
of around 280MB/s which works back to 70MB/s per drive which is not bad
considering the arrays are about 85% full. Empty disks give you better
speeds.
-Clay
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