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sparkie1984
Sep 26, 2010, 03:50 AM
how do you fellow applers check its performing well? i ran xbench and my highest speed was on a sequential uncached read at 180.81 MB/sec (256k blocks)

is that about right? i thought these ran around the 200 mark?

my lowest mark was for another uncached read and came in at 29.85MB/sec (4k blocks)

sorry if this seems stupid, but im new to the world of ssd's and want to check its performing as it should be!


Hellhammer
Sep 26, 2010, 03:58 AM
Hard to say because you didn't tell what SSD you have. Some have only 200MB/s speeds while others can have nearly 300MB/s
sparkie1984
Sep 26, 2010, 03:59 AM
Oops sorry :o

It's an ocz vertex 2 there were other results mostly along the 100mb/sec
strausd
Sep 26, 2010, 10:39 AM
I thought those were supposed to get up around 280, same as OWC SSDs. I just tested my OWC SSD and only got 240 for read and write.
sparkie1984
Sep 26, 2010, 10:47 AM
this is whats concerning me!

i know its relative but people describe the performance as wow!

and im not experiencing that here. its better but not by tons
johnnymg
Sep 26, 2010, 10:50 AM
this is whats concerning me!

i know its relative but people describe the performance as wow!

and im not experiencing that here. its better but not by tons

What size SSD did you get? Often, the smaller SSD's are a bit slower than their big brothers.

cheers
JohnG
sparkie1984
Sep 26, 2010, 10:51 AM
its a 60gb ocz vertex 2 which im sure said on the box 220/250mb/sec.

its a shame there not a diagnostic or something which tests it.

its also runing the latest firmware which came out in july or august this year i think
johnnymg
Sep 26, 2010, 10:59 AM
its a 60gb ocz vertex 2 which im sure said on the box 220/250mb/sec.

its a shame there not a diagnostic or something which tests it.

its also runing the latest firmware which came out in july or august this year i think

JMO, but that's a "smaller" SSD so perhaps the speed #'s you're seeing are normal.
Sean Dempsey
Sep 26, 2010, 11:09 AM
Here's the results on my 60gb OWC SSD:

Sequential Uncached Read of 256k blocks: 197.33 MB
Sean Dempsey
Sep 26, 2010, 11:13 AM
And to compare, here's a VelociRaptor 150gb
sparkie1984
Sep 26, 2010, 11:22 AM
Thanks Sean!

That looks almost identical to what mine did :)

I thought they'd be a little faster but I guess the figures are up to rather than sustained
Honumaui
Sep 26, 2010, 12:11 PM
try aja also ? see what that brings you ?
sparkie1984
Sep 26, 2010, 12:20 PM
What's aja guys?
pinchu71
Sep 26, 2010, 12:32 PM
here my results with two 120 Gb SSD from OWC in raid 0 mode
http://farm5.static.flickr.com/4123/5026264505_8932d88ccc.jpg
SpookyLars
Sep 26, 2010, 12:32 PM
What's aja guys?

Software :D Take a look here (http://www.aja.com/products/software/).
sparkie1984
Sep 26, 2010, 12:36 PM
Oh right lol :D
MysticColby
Sep 26, 2010, 03:43 PM
OCZ Vertex 2 240GB vs. WD Caviar Black 1TB (stock Mac Pro HD)
specs from OCZ:
Max Read 285MB/s
Max Write 275MB/s
Sustained Write 250MB/s
not quite there...

I like those raid0 speeds!
DSchwartz88
Sep 26, 2010, 06:38 PM
I would take other peoples advice here and use Aja System Test. xBench has time and time again proven to be an unreliable source for SSD benchmarks (bunch of threads on it if you search)
sparkie1984
Sep 27, 2010, 12:26 AM
thanks!

well i ran it and:

I/O Transactions
Frame MB/sec
Read Write
00.0 262.3 251.0
01.0 262.9 250.1
02.0 261.5 252.6
03.0 261.3 256.7
04.0 264.7 256.6
05.0 251.0 257.1
06.0 253.0 256.6
07.0 236.6 256.6
08.0 263.7 249.3


this is only a fraction of the text it said but its all quite close.

seems to be a bit healthier!