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GUIDE: SSD Tweaking Guide
- Thread starter Orlandoech
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Parallels Fusion
Would this also apply to running win8 under parallels? Before seeing your post i installed groths trim enabler about a month ago on my 2012 mini with diy FUSION samsung 840 250gb. I ran blackmagic when i installed sammy and was at around 250W and 500R. Now my my speed are consistenly low with a lot of variation between Blackmagic tests. could running groth trim enabler alongside windows default trim cause slow speeds or damage?
After seeing you post I have disabled Groths trim enabler under the assumption that windows was doing the trim by default. That evidently is not causing the slow speeds unless i need to give windows trim time to sort things out.
For what it's worth I corrupted something and couldn't connect to the internet/internet from windows/parallels and I had to have parallels support(which is excellent by the way)reinstall win8 and parallels due to my incompetence.
Any ideas on my slow blackmagic scores? I guess I'll try Chameleon?
Would this also apply to running win8 under parallels? Before seeing your post i installed groths trim enabler about a month ago on my 2012 mini with diy FUSION samsung 840 250gb. I ran blackmagic when i installed sammy and was at around 250W and 500R. Now my my speed are consistenly low with a lot of variation between Blackmagic tests. could running groth trim enabler alongside windows default trim cause slow speeds or damage?
After seeing you post I have disabled Groths trim enabler under the assumption that windows was doing the trim by default. That evidently is not causing the slow speeds unless i need to give windows trim time to sort things out.
For what it's worth I corrupted something and couldn't connect to the internet/internet from windows/parallels and I had to have parallels support(which is excellent by the way)reinstall win8 and parallels due to my incompetence.
Any ideas on my slow blackmagic scores? I guess I'll try Chameleon?
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I am running windows in parallels with DIY sammy 840 fusion mac mini and someone said windows has trim enabled by default, which i confirmed thru the windows CMD, and that you shouldn't have Groth's trim enabler enabled at the same time.Did i get a false positive from windows CMD? since i think you are saying in the above that windows cannot Trim running under OSX? If true then I should reenable Groths trim enabler, Right?
TRIM is an operating system-dependent function. Windows wouldn't be able to affect what OS X is doing, so yes - you'll need to use Groth's or Chameleon (or Terminal commands) to re-enable it in OS X. Although I don't know about the advice you mentioned regarding now having TRIM enabled on Windows and OS X at the same time.
Thanks for clarifying.Another question or 2. I press start on Blackmagic and speeds start really low like 40ish write and 180 read then gradually increase. ther is also a lot of variation within tests. Is this sow start and variation normal for speed tests?
Since i am running fusion, blackmagic does not list the sammy 840 as a target option so i am not entirely positive i am speed testing pure ssd. Could selecting "downloads" as the target ensure pure ssd speed test?
I just installed a Corsair Neutron GTX in my mac mini, which is runnign 24/7 BOINC projects. Would it be wise for me to move my BOINC data folder to another drive, or will it not create significant wear on my SSD?
Curiouser and curiouser..?
On a 2012 cMBP with a 512 GB Samsung 830 replacing the HD, 16 GB ram, 10.8.3
Get the below in terminal when executing sudo pmset -a hibernatemode 0 to disable hibernate mode...
And get it again in terminal when executing sudo pmset -a sms 0 to disable sudden motion sensor...
Idle sleep timings for "AC Power" may not behave as expected.
- Disk sleep should be non-zero whenever system sleep is non-zero.
Regarding Hibernate I went on with the other commands...
Terminal says both Hibernate and SMS are set to 0 and it also says the sleep image remains, after many restarts and shutdowns, zero bytes... Sleep is immediate and shut down (if I wait a little while after a boot) is almost immediate...
-----------
Then, regarding noatime...
Over and over got the below in Terminal when putting the file with the specified code into /Library/LaunchDaemons to disable noatime, did it by copying a plist file to desktop and changing it to what is called for restarted, file there, still below message
chown: /Library/LaunchDaemons/com.nullvision.noatime.plist: No such file or directory
So I pulled the file out of there and restarted Yet, when I run in Terminal mount | grep " / " I get the below, which might mean from what I read in this thread that the change was made..?
/dev/disk0s2 on / (hfs, local, journaled, noatime)
-------------
*
I've edited this to reflect the disappearance of some seeming issues after I set Chameleon back to default as much as possible and then got rid of it, and just used the methods in this thread... Haven't tried noatime again though, I'm a little nervous about it after what I describe above, and not sure in any case if it would make a noticeable difference for me... Though maybe the change is made..?
Hoping for some thoughts...
On a 2012 cMBP with a 512 GB Samsung 830 replacing the HD, 16 GB ram, 10.8.3
Get the below in terminal when executing sudo pmset -a hibernatemode 0 to disable hibernate mode...
And get it again in terminal when executing sudo pmset -a sms 0 to disable sudden motion sensor...
Idle sleep timings for "AC Power" may not behave as expected.
- Disk sleep should be non-zero whenever system sleep is non-zero.
Regarding Hibernate I went on with the other commands...
Terminal says both Hibernate and SMS are set to 0 and it also says the sleep image remains, after many restarts and shutdowns, zero bytes... Sleep is immediate and shut down (if I wait a little while after a boot) is almost immediate...
-----------
Then, regarding noatime...
Over and over got the below in Terminal when putting the file with the specified code into /Library/LaunchDaemons to disable noatime, did it by copying a plist file to desktop and changing it to what is called for restarted, file there, still below message
chown: /Library/LaunchDaemons/com.nullvision.noatime.plist: No such file or directory
So I pulled the file out of there and restarted Yet, when I run in Terminal mount | grep " / " I get the below, which might mean from what I read in this thread that the change was made..?
/dev/disk0s2 on / (hfs, local, journaled, noatime)
-------------
*
I've edited this to reflect the disappearance of some seeming issues after I set Chameleon back to default as much as possible and then got rid of it, and just used the methods in this thread... Haven't tried noatime again though, I'm a little nervous about it after what I describe above, and not sure in any case if it would make a noticeable difference for me... Though maybe the change is made..?
Hoping for some thoughts...
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I still get the occasional beach balls with my SSD and bioshock levels do. It load instantly. iPhoto is much snappier though and iTunes fires up and loads album art instantly. Why am I seeing such inconsistent behavior?
Probably not long enough in that you'll most likely have replaced the drive with some faster/higher capacity before it starts to go bad.
What's the average life of a SSD if you use the laptop lat's say 10hours/day? (with hibernation and local backups)
You could write tens of gigabytes per day and the drive will still last years. Even taking every precaution to minimize writes, there is still a chance of failure. Keep regular backups, and you'll be fine. SSD technology has improved to the point where there's not a great need to fret about preserving NAND life. Heck, the primary reason I disable hibernation is to free up space that will be used for other things. If I'm stupid enough to let my MBP's battery run down to where it would enter the default hibernation state, I deserve to lose that data.
See the chart below from this article to give you an idea. Even with some of the new TLC NAND chips, you are looking at a long long time.
That's funny that it's 11+ years even writing 10GB's per day. I'm betting most people don't do close to that, so the life would be dramatically longer then it already is.
The recommendation if not to manually defrag with aftermarket tools for example. The normal file organization OS X does to prevent fragmentation won't hurt the SSD and can't be disabled.
It doesn't show you that you've type the password, just type it and hit enter. Make sure a password is set too.
Thank you, I feel pretty dumb now. Didn't realize it was detecting it.
However 4 "set noatime flag" did not work. Did all the commands, restarted, went to check it with the verify code and it didn't show noatime in the parenthesis?
You need to copy and paste the XML posted here into a plain-text editor. I couldn't get it to work by copying the code into a TextEdit document. I used WriteRoom since I own that software, but Text Wrangler is a good, free alternative.