Date: Thu, 26 Jul 2007 16:58:55 +0100 From: "Clayton Milos" <clay@milos.co.za> To: <freebsd-stable@freebsd.org> Subject: Re: SATA 300 Drive Being Run At 150 Message-ID: <03d801c7cf9d$e0233f90$0264a8c0@claylaptop> References: <46A22253.8080100@tundraware.com><20070721165539.GA2579@dan.emsphone.com><1431AA268771E71884A824C3@fserv.hub.org><20070722033804.GA49930@eos.sc1.parodius.com><d3ea75b30707260755p55eaf3d0s43a5d90867478d9c@mail.gmail.com> <499c70c0707260850k2f24773dhe181441c37c149f3@mail.gmail.com>
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----- Original Message ----- From: "Abdullah Ibn Hamad Al-Marri" <almarrie@gmail.com> To: "Eduardo Meyer" <dudu.meyer@gmail.com> Cc: <freebsd-stable@freebsd.org>; "Tim Daneliuk" <tundra@tundraware.com>; "Dan Nelson" <dnelson@allantgroup.com>; "FreeBSD Mailing List" <freebsd-questions@freebsd.org>; "Marc G. Fournier" <freebsd@hub.org> Sent: Thursday, July 26, 2007 4:50 PM Subject: Re: SATA 300 Drive Being Run At 150 > On 7/26/07, Eduardo Meyer <dudu.meyer@gmail.com> wrote: >> On 7/22/07, Jeremy Chadwick <koitsu@freebsd.org> 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: dudu.meyer@gmail.com >> profissional: ddm.farmaciap@saude.gov.br > > Here is me too. > > FreeBSD services.wearab.net 7.0-CURRENT FreeBSD 7.0-CURRENT #2: Tue > Jul 24 05:07:02 GMT 2007 > arabian@services.wearab.net:/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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