Still about SSD potentials...write and read speed

Posted by Macroideal on Stack Overflow See other posts from Stack Overflow or by Macroideal
Published on 2010-03-22T02:28:39Z Indexed on 2010/03/22 2:31 UTC
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HI Gurus, I have been working on SSD(solid state disk) for several months..Problems and Questions hit my head unexpectedly..Coz i am a virgin in ssd... Esp these days i was testing the write-read speed of ssd, which I was always caring.... however result turned out not good as I expected, or even worse Three kinds of read-write were implemented in my test

  1. read and write directly from and into ssd, with openning ssd as a whole device.
     in windows: _open("\\:g", ***)..
     It can be very tricky and hairy that you'd write a data with size of folds of 512, at 
     the disk position of folds of 512bytes...
     So, If you wanto write just a byte or 4 bytes, you'v to write at least a whole sector one time.
  2. Read and write data from and into files located in SSD...
  3. Read and Write data from and into files in mechanical Disk

     I compared the pratices below...I found ssd sucks...the ssd performs worse than mechanical disk...
     so i am wondering where i can get the potential performance of ssd, since ssd is said to a substitute for mechanical disk in the future..
     Nevertheless, I test ssd with a pro-hard-disk tools..ssd is like twice speedier than mechanical disk.
     So, why?

     Thanx very much...If you know tips of ssd...follow me

Still about SSD potentials...write and read speed

Posted by Macroideal on Super User See other posts from Super User or by Macroideal
Published on 2010-03-22T02:28:39Z Indexed on 2010/03/22 2:41 UTC
Read the original article Hit count: 597

Filed under:

Windows

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linux

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ssd

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disk

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write

I have been working on SSD (solid state disk) for several months..Problems and Questions hit my head unexpectedly..Coz i am a virgin in ssd...
Especially these days I was testing the write-read speed of ssd, which I was always caring....
however result turned out not good as I expected, or even worse Three kinds of read-write were implemented in my test

read and write directly from and into ssd, with openning ssd as a whole device. in windows: _open("\\:g", ***)..
It can be very tricky and hairy that you'd write a data with size of folds of 512, at the disk position of folds of 512bytes...
So, If you wanto write just a byte or 4 bytes, you'v to write at least a whole sector one time.
Read and write data from and into files located in SSD...
Read and Write data from and into files in mechanical Disk

I compared the pratices below...I found ssd sucks...the ssd performs worse than mechanical disk... so i am wondering where i can get the potential performance of ssd, since ssd is said to a substitute for mechanical disk in the future.. Nevertheless, I test ssd with a pro-hard-disk tools..ssd is like twice speedier than mechanical disk.

So, why?

Developer IT