SATA2 HDD slow based on these hdparm -Tt /dev/sda numbers [SOLVED]

I have a EG45M-UD2H running BIOS F3 (latest one as of the time of this post). I'm noticing a pretty significant HDD speed decrease with this board vs. my old board. If I take the same Seagate 7200.12 (1 gig) HDD and benchmark it on another motherboard, the cached reads are about 7x higher.
For example, under the EG45M-UD2H:
# hdparm -Tt /dev/sda
/dev/sda:
Timing cached reads: 2692 MB in 2.00 seconds = 1346.47 MB/sec
Timing buffered disk reads: 386 MB in 3.01 seconds = 128.13 MB/sec
On another motherboard (DFI LP P35-T2R):
# hdparm -Tt /dev/sda
/dev/sda:
Timing cached reads: 14740 MB in 2.00 seconds = 7378.19 MB/sec
Timing buffered disk reads: 368 MB in 3.02 seconds = 122.04 MB/sec
The only relevant settings I see in the BIOS are:
BIOS settings: Integrated Peripherals>SATA RAID/AHCI Mode [AHCI] <-- I have also set this to disable and there is no difference
SATA Port0-3 Native Mode [Enabled or Disabled] <-- I tried both and there is no difference
Does anyone have any thoughts?
$ lsmod | grep ahci
ahci 34321 4
libata 151860 4 pata_acpi,ata_generic,ahci,pata_jmicron
Last edited by graysky (2009-12-28 19:36:50)

markp1989 wrote:
sounds like hddparm may off messed up, my p45 board isnt on right now, but i loged in to my server and did a hddparm test ....
mark@torrentslave:~$ sudo hdparm -Tt /dev/sda
/dev/sda:
Timing cached reads: 2308 MB in 2.00 seconds = 1153.72 MB/sec
Timing buffered disk reads: 332 MB in 3.01 seconds = 110.25 MB/sec
mark@torrentslave:~$
the 7000mbs cache read, way to high for a sata 3gb interface, so i think the first reading is a mistake.
i dont know of any other hdd test utils apart from dding to /dev/null. but some one will probably mention one soon
Thanks for the info, markp. Can you post the output from your P45 board once you have that system powered up? To answer your question, there's bonnie++ but it takes quiet a long time to run.
EDIT: This whole issue is a non-issue -- PEBKAC. Seems as though I was misusing the -T switch:
hdparm manpage wrote:
-T
Perform timings of cache reads for benchmark and comparison purposes. This displays the speed of reading directly from the Linux buffer cache without disk access. This measurement is essentially an indication of the throughput of the processor, cache, and memory of the system under test.
Last edited by graysky (2009-12-28 19:34:45)

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SATA2 HDD question

I have :
MSI P45 neo2-fr
WD caviar green power 1TB 32MB cache 7200 (only this one hdd)
I installed Vista64, connected hdd in intel ICH10R sata connector. I created 4 partitions during vista instalation. How can i check if the data transfer is sata2 ? When i copy data from one partition to another the transfer is about 33MB/s witch is about the same when i copy from external usb drive to this hdd ??? Is this ok speed or not ? I thought that transfer rate would be 3Gb/s ~ 350MB/s ...

You'll never reach 3GB/s with SATAII.
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Best is to download HDtune and see what it does.
Edit :
Did a quick bench on mine
Max transfer = 104MB/s
Min transfer = 2MB/s
Average = 85.6MB/s
Accestime = 17 ms
Burstrate = 90MB/s
So somewhere around these values and your disk is fine.

Is my HDD slow?

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With EFI 1.6 I got 25 mb/s read & write
After EFI 1.7 I get 32 mb/s read and 32 mb/s write with AJA.
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Hi !
With AJA, since SL, my MBP varies between those values :
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Uncached Read 117.66 59.13 MB/sec [256K blocks]
Random 30.54
Uncached Write 11.09 1.17 MB/sec [4K blocks]
Uncached Write 68.20 21.83 MB/sec [256K blocks]
Uncached Read 60.63 0.43 MB/sec [4K blocks]
Uncached Read 104.13 19.32 MB/sec [256K blocks]
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Until you have a known good install it's impossible to fault find such things like as being asked. In my opinion anyways. If you have weird stuff going on that you can't bottom often it's a case of making sure stuff is right. Dropping one drive from one platform into another is not one of those right things.
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gffreire,
I am the person who started the tread you referenced.
The Problem must everyone is having is with true SATA II drive the have 3 Gb/s speed and NCQ features.
The fix for all of this takes two things, (1) BIOS V1.A and earlier have a problem and (2) all current nVidia RAID drivers posted, unless they have posted some thing new in the last day, that include 32-bit and 64-bit have also got problems.
I have tested a new beta BIOS and Beta driver for 32-bit when used together, they work. The new-posted BIOS V1.B appears to have the BIOS fix in it, but currently posted, RAID Drivers still have no fix incorporated in them.
Send me your E-mail address by Personal Message and I will send you a copy of the Beta 32-bit drive. So, if you upgrade to BIOS V1.B and are installing the beta driver, during clean install, it may solve your problem. However, be remaindered this driver is pre-beta and also does not includes no “xxx.cat” file. Effects on your system could be anything. I have gotten it to run using a clean install on both of my MS-7125 MBs.
Roger

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richardpsic wrote:
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I don't quite know what to make of it, perhaps it makes it easier to transfer a user to another machine perhaps?
Allowing users to have programs only in their particular users instead of globally?
Anyway, if you move your Home folder back to the SSD, but without the files (put them in new folders like Documents 2, Pictures 2 and so forth) and have iTunes and iPhoto link to their libraries on the other drive, you should see less of that behavior.
Apple doesn't expect one to move their home folder to another drive or partition, so any performance tweaks done need to return to what Apple expects before you upgrade.
Same thing with system level tweaks, you have to disable them before running Software update or upgrading.
https://discussions.apple.com/message/16276201#16276201
Use the free Tinker Tool to turn on your invisible files, also make sure to backup your files before tinkering around.

SATA2 HDD slow based on these hdparm -Tt /dev/sda numbers [SOLVED]

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