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Why random 100% write has less IOPS than sequential 100% write

idata
Community Manager
1,375 Views

hi,

I am trying to measure the Intel X25-v SSD performance in random 100% write and sequential 100% write. I get less number of IOPS for random 100% writes when compared to sequential 100% write.

I browsed the net and from there it sounds like "SSD has a write cache and all the write requests are combined to form the size equal to SSD's erase block size.". Due to this random writes have less IOPS when compared to sequential IOPS. Is my understanding correct ?

Thanks you in advance.

Regards,

Ramu

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2 Replies
MBall5
New Contributor II
139 Views

Hello, I would like to let you know that IOPS questions are considered benchmarking, and we do not support or provide information about benchmarking.

idata
Community Manager
139 Views

Hello, I would like to let you know that IOPS questions are considered benchmarking, and we do not support or provide information about benchmarking.

So what your saying in the Technical Specifications of this PDF for Intel® X25-V Value SATA Solid-State Drive from Intel saying:

"Random I/O Operations Per Second (IOPS)1

Random 4 KB Reads: up to 25,000 IOPS

Random 4 KB Writes: up to 2,500 IOPS"

http://download.intel.com/design/flash/nand/value/prodbrf/323039.pdf http://download.intel.com/design/flash/nand/value/prodbrf/323039.pdf

Thats not benchmarking?

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