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Windows 7: Show us your SSD performance 2

08 Jun 2012   #331
mjf

Windows 7x64 Home Premium SP1
 
 

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 System SpecsSystem Spec
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08 Jun 2012   #332
Hopalong X

Windows7 Pro 64bit SP-1; Windows XP Pro 32bit
 
 

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.

.................................................................................................... ...................................................................

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.
My System SpecsSystem Spec
08 Jun 2012   #333
Hopalong X

Windows7 Pro 64bit SP-1; Windows XP Pro 32bit
 
 

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
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08 Jun 2012   #334
BarryBGB

Microsoft Windows 7 Professional & Ultimate 64-bit 7601 Multiprocessor Free Service Pack 1
 
 

Quote   Quote: Originally Posted by Hopalong X View Post
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?
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08 Jun 2012   #335
Hopalong X

Windows7 Pro 64bit SP-1; Windows XP Pro 32bit
 
 

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
My System SpecsSystem Spec
08 Jun 2012   #336
Hopalong X

Windows7 Pro 64bit SP-1; Windows XP Pro 32bit
 
 

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.
My System SpecsSystem Spec
08 Jun 2012   #337
derekimo

Microsoft Community Contributor Award Recipient

 
 

Good stuff Mike, Thanks!
My System SpecsSystem Spec
08 Jun 2012   #338
Hopalong X

Windows7 Pro 64bit SP-1; Windows XP Pro 32bit
 
 

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.
My System SpecsSystem Spec
08 Jun 2012   #339
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

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
My System SpecsSystem Spec
08 Jun 2012   #340
derekimo

Microsoft Community Contributor Award Recipient

 
 

Quote   Quote: Originally Posted by whs View Post
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
Also good stuff wolfgang. That was Mike that found that other good info.
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