Friend at Apple told me.
On the other hand, you can verify that, doing this:
shut down your computer,
wait two minutes,
boot your computer,
wait two minutes,
press the caps lock key,
shut down your computer.
The monitor shut down immediately, the light shut down too, immediately.
Is this a correct proof for you ?
For a SSD? I have to politely disagree. OS X will not defrag a SSD but it will do TRIM when the SSD is idle or when it has the chance. Will it do TRIM while shutting down? I don’t know but there are some claims.
What is fragmentation ?
And for those who are asking themselves about TRIM .
All of these said, I recall how fast a hard disk was 30 years ago after the use of Disk Doctor (Symantec) defragmentation tool. It put all OS files first (in the hard disk), then applications, then data (in a given order ?). When done, like Windows XP, it displayed the hard disk contents in colors (and even report the name of the file the mouse is above one of his blocks.
That was in a time a hard disk was running slower, far slower than todays.
[quote=285184:@Emile Schwarz]What is fragmentation ?
And for those who are asking themselves about TRIM .
All of these said, I recall how fast a hard disk was 30 years ago after the use of Disk Doctor (Symantec) defragmentation tool. It put all OS files first (in the hard disk), then applications, then data (in a given order ?). When done, like Windows XP, it displayed the hard disk contents in colors (and even report the name of the file the mouse is above one of his blocks.
That was in a time a hard disk was running slower, far slower than todays.[/quote]
We are getting to a common and correct understanding that can only be good for everyone, which is:
TRIM your SSD but do not defrag it.
And your “friend at Apple” is what exactly? Sales person? Technician? Manager? Tea lady?
I have been quoting experts from the company which makes SSDs, and who specifically answer customers questions like “do I need to defragment my SSD?”
No.
When the computer “shuts down” the system saves the current state to disk (and you have a SavedStates folder on the disk). That’s how it can so quickly get you back to where you were without going through a complete boot process. Has NOTHING to do with defragmentation.
If you don’t do anything New then nothing (or very little) needs to be written.
I have found that defragmenting the SSD of a virtual machine from inside the VM can be very helpful in reducing the size of the VM’s virtual hard disk, to save space on my real SSD. I believe that why this works is that defragment collapses some blocks in the virtual hard drive, which then allows the host VM (Fusion or Parallels) to do a better job compacting the disk.
This comes in handy when doing software testing in which I might have 6 or 8 different VMs sucking up my SSD space.
[quote=285214:@Michael Diehr]I have found that defragmenting the SSD of a virtual machine from inside the VM can be very helpful in reducing the size of the VM’s virtual hard disk, to save space on my real SSD. I believe that why this works is that defragment collapses some blocks in the virtual hard drive, which then allows the host VM (Fusion or Parallels) to do a better job compacting the disk.
[/quote]
VMs are normally using non-static disk images. They will continously grow as they need more space. Deleting items will not recover that space as it would take too long, the files are simply marked as deleted. “Defragmenting” the VM issues a command to compact the space down to the amount actually in use. It has nothing per se to do with defeagmentation but with freeing space created by deleting files.
Cleaner, street and desktop cleaner. It can also bark after clients.
Eurgh that MacBooster is a rip-off of ‘Clean my Mac’. The interface and even the icon.
Seems you’ve ended up becoming part of the clone army Chris.
Apple branded SSD ? Who Knows ?
Disk Utilities says: APPLE SSD SM0256F Media
OS Report says nothing useful.
I’m afraid to read that.
Must we use SSD in economical mode ?
Must we use a standard HD to store downloaded stuff: if you download 5GB each day how many time that SSD will run before it dies ?
Im scared !
Yup SSDs have a life span, I don’t know if it’s actually real (manufacturers will tell you it) or if it was just implemented to make sure you have to buy another one.
Last year Ars Technica did a test of a bunch of SSDs, they found one Samsung to be the worst and another to the best. Most SSDs in Apple products were Samsung.
Regardless, you should always have at least ONE backup!
Is your SSD almost full? That can cause massive slowdown while the drive is shuffling around data (http://www.anandtech.com/show/6489/playing-with-op for example). I always keep mine filled to maximum 70% to avoid this.
You are correct Mattias. Below 20% of free space (in my Apple 256MB), the SSD slowdown.
And all the relocation stresses the SSD even further - see for example this article http://techreport.com/review/27909/the-ssd-endurance-experiment-theyre-all-dead (scary read that I can’t recommend before bed-time).
Many drives keep a small amount of space around as a scratch pad. My Corsair SSDs report 480GB available on a 512GB drive and 240GB available on a 256GB drive. The extra space is for the drive to shuffle around while writing the blocks.
I use SSDLife on all my machines with SSD and the one with the smallest SSD (256 GB Corsair Force GS) now reports 90% life after about 700 TB of data written. The drive is almost three years.
I recommend trying to clean the drive up and then let OS and TRIM do the work on the drive.
Because some people critisided the defragmentation which I only did once to get me some more free space, I used the trial version of SSDlife to found out.
It tells me that my SSD is in perfect health and will last for another 8 years. To be honest, they are much to positive, however I have to admit, after 4 years of heavy use, it is working without any problems.
My SSD is an Intel like explained before, based on my own experience, I would suggest Intel SSD because of their high reliability. Speed is not the only factor, liability is much more important.
I am not a victim of the clone army, I just do the translation nothing less, nothing more. I do not have a Mac, so I cannot give an objective opinion about MacBooster. Advanced SystemCare is on Windows doing a very good job for me. When Mac users here saying that MacBooster is not doing its work properly, I will accept and respect their experiences. Because there are more users complaining here about it, I assume MacBooster is not great. But again, I am only a translator, one of the many.
Chris
Most of the utilities that claim that they will magically optimize, clean and maintain a Mac or PC should be taken with a bit of distance. As most of us know, modern machines are rather complex biospheres, into which interaction between programs and new versions of the system can play havoc.
I have no idea if MacBooster is any better or any worse. Sure, they did the same thing as Clean My Mac (which is the one I use), but after all, if they do a honest job, I don’t mind. If Dan Bricklin had gone after all copies of his Visicalc for rip-off, we would not enjoy Excel and Open Office today.
As long as one makes real efforts to improve the product, it is alright.
What I resent very much is this bunch of cheap copycats in the MAS who make low quality copies and price them at ridiculously low prices in what looks like an attempt at undercutting the original. Consumers, however, are most of the time able to tell the difference. In spite of a flurry of dirt cheap copies of Check Printer, I regularly see customers that I know have tried the cheapies, and are happy to finally find real service and performances.
Chris, for clarification mate. You were not to know and therefore I don’t blame you. However companies like the one that make MacBooster are a huge problem for us developers. Every successful app we’ve had, has been cloned. Some of the clones even use the same application name and icon, some get it very close. All destroy our capability to create awesome new apps, as they steal our work and take the food off our table.
I’m not against innovation, just duplication like what these guys have done.
I read somewhere that Apple, in its App Sore, will sort applications: remove oldest, non working, clones, etc.
Since I forgot where I read that, think that I may be wrong.
I doubt the reviews will weed out the clones. These apps may be of inferior quality, they still function.
What the new review seems to be targeting is old apps.