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Hi!
This was my test after a fresh install on 2x80gb raid 0
http://i34.tinypic.com/2a0ggmb.png http://img203.imageshack.us/img203/3595/e6vvon.png
And this is now with 29gb of the 148 free after about a month of use.
http://i36.tinypic.com/2u73pd1.png http://i33.tinypic.com/2vxm2bn.png
The system says that the drive is only 4% fragmented.
Why this bad performance?
You shouldent defrag your SSDs. Also, for how long have you had this array? Performance might drop over time with SSDs.
From looking at the stats, and I THINK this is the one u have..
- Read: Up to 250MB/sec
- Write: Up to 70MB/sec
It has pants write anyway, however the read is excellent, and the slight performance drop in the first week of use I THINK is normal, but I dont think it will drop much more, its not going ot drop 20 each month for example.
My drive has 200 read and in raid I get about 380 on AS so, tbh ur about bang on id say.
Scaling at 100% and going by those stats you would be 500/140 so I really dont think u should be worrying.
When you are talking about 480 v 500 the difference is so obsurdly irrelivent its like complaining u should have 110FPS, why are yu getting 108FPS.
If you are worried about them continuing to degrade so much I do not think they will if u look after them.
EDIT: I did not notice your 4k, that looks odd.
Yes, its the 4k where I see the problem, specially in read is less than the half of the original numbers, I dont think that this is normal.
I've seen this low perf. with random 4K as well with the new G2s I had for testing a few days. I am puzzled!
Those numbers look fine to me. The g2's do degrade a bit more than the g1's from what I've seen in reviews.
The degradation does not apply to reads. And it's the reads that are an issue here.
When at almost capacity they get hosed quickly. Hopefully TRIM will solve the issue.
My 80 GB G1 got so bad today I ran HDDERASE to get it back into shape. Seq write was down to ~20MB/s and random 4K write ~6-12MB/s. In my opinion SSD at the moment is useless for file storage. Just OS + apps seems to work well and not degrade much.
Please read before you repost useless stuff ;) (not being mean)
We are talking about READ performance issues here.
Except for sequential, his write performance dropped by more than 50%. It definitely affects reads in actual application use (firmware might be trying to cleanup after writes or whatever). In my example the OS would freeze 5-10s during heavy disk activity. It often wouldn't launch the Task Manager until an Unrar was completed or lag during movie playback even though nothing else was going on. Once my drive was hosed the whole performance began to deteriorate.
But the issue is not the writes - SEE THE READS, THEY SUK HARD.
Yes degradation affect reads. And there is only a 20mb drop on sequential and 512k, hardly 'suking hard'. From his numbers they look normal for an x25-m in a used state. Unless you are having stuttering like cx-Ray said above I wouldn't worry about performance.Quote:
Originally Posted by alfaunits
If it were the used state issue, write speed would not be higher than read.
And did you notice this part:
"This was my test after a fresh install on 2x80gb raid 0"??
crystaldisk always shows a higher 4k write speed w/ x25-m's dood.Quote:
Originally Posted by alfaunits
and did you notice the part
which i was referring to. the results still look perfectly fine to me.Quote:
And this is now with 29gb of the 148 free after about a month of use.
It actually does. Read access times go uuuuuuup with degradation on X25-s. The 4k numbers go down as well, but not quite as much as the OP from what I have seen.Quote:
Originally Posted by alfaunits
I hope intel release the trim firmware soon, because a degradation of about 60 65% is a completely shame
Hmm right.. why it shows such low reads is beyond me, but it's so on a clean drive on any review...Quote:
Originally Posted by lowfat
Anand random 4K reads are a different story though - it outpaces even X25-E.