I don't want to keep banging a drum but if you look at the CrystalDiskInfo of your SSD you will see a very large number of non 4k aligned R/Ws. The SSD controller doesn't seem to be taking care of it. It still appears to be an application software issue which was probably never written with SSDs in mind.
My earlier post applies to only those alignments under 512K or 1024K when installing without System Reserve.
If you installed with System Reserve you can check the System Reserve alignment easily from CMD as posted by WHS and is listed in his tutorial.
As posted in his tutorial 1024K or even 2048 is common alignment for System Revserve.
Just not less/lower than 512K.
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mjf
The alignment Anvil and I am refering of Vista, W7 or W8 is the installation of the OS.
If the OS is installed misaligned the SSD will never function to its potential.
BarryBBG's 32k alignment is benching quite good write and read speeds for now.
The "4K" page file alignment has been set but not the block alignment.
In time block alignment issues will appear.
Wear leveling, TRIM (block erase) and GC if the SSD has that function (marking blocks to be erased) can be effected and can slow the SSD down.
Poorly written, misaligned software later does not change the OS alignment.
Last edited by Hopalong X; 08 Jun 2012 at 08:20.
Good morning BerryBGB!
I was using your one SSD with the 32K alignment as an example.
I hope I haven't totally confused everyone.
Mike
No problem Mike.
I crave attention
I certainally wish they make a motherboard with more than 2 Intel Sata III ports.
I want to run 2 raid 0 setups so I have to use the Mavel ports for the second. Yuck.
Is there a seperate Intel controller card I can get to allow me to do this?
Yes but the Intels are very expensive.
The last time I looked a few months ago they started at about $300 for a Intel controller PCIe card.
They do make moboards with 4 and/or 6 Intel Sata 6.0Gbs ports. I don't remember who. They may be Intel mobo's.
Start about $200 now.
http://www.newegg.com/Store/BrandSubCategory.aspx?Brand=1157&SubCategory=410&name=Intel-Controllers-RAID-Cards
More and better info than I can explain.> Solid State Drive Primer
Scroll down the page to- COURSE #102: THE STRUCTURE OF A SSD –FROM GROUND UPWARDS
A. SSD MEMORY: UNDER THE MICROSCOPE is good to read first for basics.
Then continue to section marked- B. SSD MEMORY: THE BIGGER PICTURE
This applies to what I posted.
Everything the author presents is based on 512K blocks as that was the norm. Many use 1024K block size now.
The author explains the block erase and has pictures.
Remember to Bookmark if you want the article for future reference. I did.
I thought it might be interesting for some of you knowledge hounds.
Derek
You are welcome.
That is a great article.
Two years old but all the basic data, TRIM, wear leveling are all covered and explained. The pictures help also.
Just to add to Derek's excellent find, the 6 chapters of this site are also very good reading: Garbage Collection and TRIM in SSDs Explained - An SSD Primer - The SSD Review
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