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Windows 7: Show us your SSD performance

18 Dec 2010   #881
Snakeyeskm

Win 7 64 bit professional
 
 
Benefits of consolidate free space?

This might be controversial, but the results surprised me. I was skeptical about the need to Consolidate Free Space in the latest SSD drives. However, I have taken this plunge with both my C300 crucial SSD and my Intel G2 SSD and to my surprise, in both cases there was a substantial improvement in my SSD performances. These results seem in conflict with "conventional wisdom". I am listing the bench results on the crucial drive below. The tests were performed one day apart, before and after running PerfectDisk 11 Consolidate Free Space on the drive. I also have similar results for the Intel G2 drive if anyone is interested. I do recognize that different runs of SSD bench can get different results and I have done two runs pre-and post-free space consolidation to confirm the improvements. I am reluctant to subject my SSD to more bench testing for obvious reasons.




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Show us your SSD performance-ssdbenchc300_12_17_2010.jpg Show us your SSD performance-ssdbenchc300_12_18_2010.jpg 
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18 Dec 2010   #882
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

I wonder whether it really matters since the access times did not change. Do you see a difference in real life too?
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18 Dec 2010   #883
tw33k

Windows 7 Ultimate (x64) SP1
 
 

Quote   Quote: Originally Posted by whs View Post
I wonder whether it really matters since the access times did not change. Do you see a difference in real life too?
Exactly. 4K and access times are what really matter and these didn't change so in reality, it did nothing to improve performance
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18 Dec 2010   #884
Snakeyeskm

Win 7 64 bit professional
 
 

Quote   Quote: Originally Posted by whs View Post
I wonder whether it really matters since the access times did not change. Do you see a difference in real life too?
You are absolutely right, in daily use, no discernible change. However, in certain large data and output programs that I run, a more than an appreciable change. In fact, I noticed the same issue when I moved from an Intel G2 160 GB drive to the Crucial C300 256 GB. If you use your computer for surfing, mail etc. the difference between the new generation drives is difficult to notice and it is easy and reasonable to jump on the 4K bandwagon. However there are a fair share of uses where larger reads and writes make an appreciable difference, especially when these programs tie up the computer for extended time periods. Different strokes for different folks. I am still not sure why the consolidated free space helps the performance.

I have three home built PC's that all use SSD's and in my limited personal experience, it is difficult to compare the day today, ongoing performance of a small Intel G2 against the larger Intel G2's even though their bench performance is considerably different as long as the computer is being used for traditional personal purposes.

Cheers.
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18 Dec 2010   #885
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

I could imagine that for e.g. video editing of a large video file it may make a difference - provided your CPU and GPU can keep up with it.
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18 Dec 2010   #886
Wishmaster

Windows 7 Home Premium 64bit
 
 

Quote   Quote: Originally Posted by Snakeyeskm View Post
This might be controversial, but the results surprised me. I was skeptical about the need to Consolidate Free Space in the latest SSD drives. However, I have taken this plunge with both my C300 crucial SSD and my Intel G2 SSD and to my surprise, in both cases there was a substantial improvement in my SSD performances. These results seem in conflict with "conventional wisdom". I am listing the bench results on the crucial drive below. The tests were performed one day apart, before and after running PerfectDisk 11 Consolidate Free Space on the drive. I also have similar results for the Intel G2 drive if anyone is interested. I do recognize that different runs of SSD bench can get different results and I have done two runs pre-and post-free space consolidation to confirm the improvements. I am reluctant to subject my SSD to more bench testing for obvious reasons.
Excellent!

I've said before and still think a Consolodate Defrag on a SSD is a good thing, if done in moderation.

Although I would not recommend Defragmenting a SSD with the Win7 built in defragger.

I too use the Consolodate method (Perfect Disc 11) for my SSDs and it does indeed help. And SmartDefrag for the Spinners.


I have found letting it Consolodate my SSDs (I have a Intel and OCZ) every 3 weeks or so keeps everything running like new.

Too much benchmarking will slow them down though.
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18 Dec 2010   #887
Snakeyeskm

Win 7 64 bit professional
 
 

Quote   Quote: Originally Posted by Wishmaster View Post
Quote   Quote: Originally Posted by Snakeyeskm View Post
This might be controversial, but the results surprised me. I was skeptical about the need to Consolidate Free Space in the latest SSD drives.------------I am reluctant to subject my SSD to more bench testing for obvious reasons.
Excellent!

I've said before and still think a Consolodate Defrag on a SSD is a good thing, if done in moderation.

Although I would not recommend Defragmenting a SSD with the Win7 built in defragger.

I too use the Consolodate method (Perfect Disc 11) for my SSDs and it does indeed help. And SmartDefrag for the Spinners.


I have found letting it Consolodate my SSDs (I have a Intel and OCZ) every 3 weeks or so keeps everything running like new.

Too much benchmarking will slow them down though.
Great to see your comments. I will follow your pattern of consolidating free space. I also use PerfectDisk 11.
Thanks and cheers.
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18 Dec 2010   #888
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Does anybody have a logic why this space consolidation would speed things up. Since access to any place on the SSD is the same, I would think that it does not matter whether the data that is e.g. being read out is in 1,2,3 versus 1, 25, 144. But maybe there is some chaining effect like on a spinning disk when the data is adjacent.
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18 Dec 2010   #889
Snakeyeskm

Win 7 64 bit professional
 
 

Quote from Tony (Tiger) on the OCZ forum

"The idea is to consolidate partially written to blocks as the controllers on the drives will use up free blocks in preference to partially written too blocks first. So...eventually you run out of free blocks and the drive will slow. If you manually consolidate free space on say a raid array (that does not have TRIM) you then free up more free blocks which you then clean with AS-SSD using FF.

So its like TRIM in a way with free space consolidation being GC "

Based on this Wishmaster's extended scheduling pattern makes even more sense to me. Wrong or right It always has improved my benches (run couple of months apart) on a variety of drives. You are clearly very experienced with SSD's and your duplicating this process as a test could be very interesting. I doubt if a few runs would have any significant negative impact on your SSD's life.
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18 Dec 2010   #890
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Hmm, interesting. That makes sense. How much does the program you guys are using cost?
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