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P256 and i7 Macbook Pro


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Hi Everyone,

 

I'm kinda new to this forum and have been searching around quite a bit but could not find an answer to my question.

 

I just upgraded from a Mid 2009 Macbook Pro 2.8GHz core2duo 8Gb Ram and p256 corsair drive, to a 2010 Macbook Pro i7.

 

My question is this. I was getting great performance with my Corsair p256 on SL 10.6.3 on the 2009 MBP but when I put it in my 2010 MBP I saw a significant drop in performance. I formatted it using disk utility during Snow Leopard install. Mac OS Extended Journaled.

 

I was getting:

 

On 2009 MBP:

Disk Test: 230.38

Sequential: 192.40

Uncached Write: 271.49 - 166.69 MB/sec (4k block)

uncached write: 224.83 - 127.21 MB/sec (256k block)

uncached Read: 100.54 - 29.42 MB/sec (4k block)

uncached Read: 368.68 - 185.29 MB/sec (256k block)

Random: 288.37

 

Now getting:

 

On 2010 i7 MBP:

 

Disk Test: 186.04

Sequential: 142.42

Uncached Write: 81.59 - 50.10 MB/sec (4k block)

uncached write: 209.79 - 118.70 MB/sec (256k block)

uncached Read: 121.82 - 35.42 MB/sec (4k block)

uncached Read: 357.10 - 179.47 MB/sec (256k block)

Random: 268.20

 

Any ideas? I'm not sure how to check what firmware I have. But I have access to both a windows machine and a MBP.

 

Any help would be greatly appreciated.

 

Thank you so much.

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Mine has the same problem. I believe once you updated the firmware, your drive would never had the same performance. Looks like it lose its performance forever.

I've tried secure erase, enable TRIM in windows 7 using bootcamp, enable "HCVI" forgive me if i spell this wrong, and i also tried to have my latop sit idle for 2 days. still the same low performance.

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I don't beliefe that a firmware upgrade degrades the performance...

Having a new MacBook Pro i7, I just made a firmware upgrade via a PC (WinXP Media Center), and the P256 performs better now in my MacBook than before. While the performance is not really high-end and seems to vary slightly (up to a Disk Test value of 230), it is now better than before:

 

http://web.me.com/alexanderfriedrich/filechute/ssd.jpg

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The latest firmware will not have any impact on MAC O.S. it only adds support for TRIM in Windows 7. I would not suggest doing the firmware update if you are using a MAC. I would suggest however checking with Apple for the latest firmware and driver updates for the new MC system and you may want to try using Parted Magic to secure erase the drive then try the fresh install again. Please note you may need to use an X-86 Channel MB to do the erase then move it back to the Mac.
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  • 2 weeks later...

I did a Secure Erase using GParted and reinstalled the Snow Leopard OS

 

I am now getting:

 

Disk Test 270.29

Sequential 246.01

Uncached Write 294.84 181.03 MB/sec [4K blocks]

Uncached Write 297.41 168.27 MB/sec [256K blocks]

Uncached Read 139.72 40.89 MB/sec [4K blocks]

Uncached Read 425.88 214.04 MB/sec [256K blocks]

Random 299.89

Uncached Write 118.41 12.54 MB/sec [4K blocks]

Uncached Write 349.81 111.99 MB/sec [256K blocks]

Uncached Read 2441.22 17.30 MB/sec [4K blocks]

Uncached Read 615.46 114.20 MB/sec [256K blocks]

 

Significant Improvement :cool: Now to setup a Raid 0 config :sunglasse

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  • 1 year later...

Did you run gparted from your Mac or did you use a PC/bootcamp? How long did the secure erase take?

 

what format did you do for gparted?

 

Could I just use Disk Utility and do a secure erase and Mac HFS+ (journaled) and achieve the same effect?

 

TIA.

 

I did a Secure Erase using GParted and reinstalled the Snow Leopard OS

 

I am now getting:

 

Disk Test 270.29

Sequential 246.01

Uncached Write 294.84 181.03 MB/sec [4K blocks]

Uncached Write 297.41 168.27 MB/sec [256K blocks]

Uncached Read 139.72 40.89 MB/sec [4K blocks]

Uncached Read 425.88 214.04 MB/sec [256K blocks]

Random 299.89

Uncached Write 118.41 12.54 MB/sec [4K blocks]

Uncached Write 349.81 111.99 MB/sec [256K blocks]

Uncached Read 2441.22 17.30 MB/sec [4K blocks]

Uncached Read 615.46 114.20 MB/sec [256K blocks]

 

Significant Improvement :cool: Now to setup a Raid 0 config :sunglasse

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I spent a good part of my day playing with this and reading up. Got gParted on CD and booted my Mac mini with the P256 in a sata dock (and also USB enclosure), but no matter what I tried, hdparm threw me back an error "Bad Address". I assume that means it can't located the drive or something. Tried as root also, no dice. Couldn't get past this issue so I guess my next attempt may be to boot into Windows 7 and try it from that side...

 

Also found an interesting post that says the P256 has built-in garbage collection while idle in OSX (haven't tried this yet):

 

http://amro.co/samsung-ssd-corsair-p256-garbage-collection-w

 

Has anyone updated their firmware to support TRIM? Then tried Trim Enabler for OSX?

 

It enabled Trim for my Kingston V100+ SSD in Lion...

 

It would be great if we could update the firmware for trim support, then enable native Trim in OSX and never have to do this "reset" procedure again.

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