I wonder the maximum read/write performance of Jasmine Platform

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I tested Jasmine Platform storing default firmware with Intel's Open Storage Toolkit.

The result obtained from the experiment indicates that the maximum read throughput is 95MB/s.
(parameters: read request size: 256KB, sequential read)

I expect that the maximum read performance is about 200MB/s.

Please let me know the maximum read/write throughput of Jasmine Platform.

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Refer to my initial tests here:
http://www.openssd-project.org/wiki/Developer_Information

In the default configuration (64GB) only two of the four channels are enabled, with four channels enabled (256GB) 200MB/sec should be attainable.
Jeremy Brock

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Jongmin, which FTL did you use for the test?
Associate Professor
Computer Systems Laboratory
Sungkyunkwan University
http://csl.skku.edu/jinsoo

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Jeremy Brock, thank you for the comment.
If I want to test full channels, is it required to add more flash memory chips to the platform?

Prof. Jinsoo Kim, I have never changed firmware (The default firmware developed by Indilinx was used).

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Quote:Jongmin Lee May 26th 3:49 pm
If I want to test full channels, is it required to add more flash memory chips to the platform?
Yes, and modify the BANK_BMP macro in Jasmine.h to represent the new memory configuration. You must also switch the AMIGOS jumper to BAREFOOT mode to enable four channels. In AMIGOS mode only two channels are enabled. At least that is my understanding.
Edited On 7:26:05 AM - Thu, May 26th 2011 by Jeremy Brock

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Maximum Write Performance
I have tried the following configuration:
Barefoot mode, 4 channel, 4 way, 128 GB NAND
fio benchmark, IO size = 4K--512K, Queue Depth=4--32, Direct/Buffered IO, using libaio.

I am able to get no more than 72 MB/s for sequential write and 125 MB/s for sequential read.
With 4 channel, 4 way -- I was expecting much more...

Any suggestions how I can get more than this for sequential writes?

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Bank configurations
With all flash memory slots configured with a total of 256GB NAND (4 channel, 8 way), I think it should be capable of double the bandwidths (close to 200MB/s) than with 128GB (4 channel, 4 way).


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