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OS X 10.10.4 Experiences (and trimforce)

Thanks. I uninstalled with App Delete, restarted, reinstalled, repeated test. Still very low results.

I've been thinking of buying 850 EVO because I was miffed about buying a SSD to speed up my computer and discovering it has the same speed as my regular HDDs but now I am genuinely confused. This probably belongs in a different thread though as it's not something that happened after 10.10.4 update, the readings from Blackmagic were the same, and I haven't tried AJA on 10.10.3. I'll go look for the right place to post a topic about this (and if someone is reading this and can advice me on which of the two programs is more reliable, please PM me, thanks)

Edit: posted here https://forums.macrumors.com/thread...c-vs-aja-system-test-crazy-different.1898879/ – apologies for derailing the discussion, please carry on. For what it's worth, TRIM still works, no data loss.
 
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navaira said:
I'm sitting here being all jealous about you people with superfast 160 MB/s speeds... here's my Kingston SV300S37A120G

View attachment 567126
DO NOT BUY KINGSTON SSDS. Unless you want to buy mine. Then by all means please do.

(TRIM enabled, fsck -fy performed)
Click to expand...

I posted in your other thread, but the problem there is that SSD uses a Sandforce controller and they are horrible at writing incompressible data. BlackMagic uses incompressible data for the test and that is why you are seeing bad write test speeds with BlackMagic and good speeds with AJA.
 
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navaira said:
Wow. It makes me wonder how accurate either Black Magic or AJA System Test are. Because AJA gave me this result:

View attachment 567136
That's 496.9 MB vs 96.2 MB write and 478.8 vs 236.4 MB read!!!
Click to expand...

It's not an accuracy issue. It's the type of data used in the test. BlackMagic uses compressed data that tends to show low numbers on drives with sandforce controllers (because they're less efficient with compressed data). Uncompressed data transfers at much higher rates. I'm not sure what controller your drive has, but it could be related to that. Samsung drives/controllers are particularly good at handling compressed data. I did a lot of reading before I purchased my 1st SSD, and it was preciously for that reason that I went with Samsung SSDs.

I don't know for sure if this is the cause of your issue but I suspect it is.

EDIT: Nevermind, I see that Weaselboy beat me to the answer
 
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Samsung 850 PRO 256Gb (Revision: EXM01B6Q)
m3cOAf.jpg
 
Hi.

As promised, I updated from 10.10.1 to 10.10.4 on my 2010 13" MBP and I will tell you how it went.

First I noticed, animation on Finder is very choppy when I scroll and bounce on the top and bottom. Way worse than previous version. Other animations feel quite the same.

On the other hand, it seems that battery life has improved a little. Maybe lower temps as well.
I'm quite happy with 10.10.4.

I'm not using trimforce command by the way. I'm using @Cindori Trim Enabler 3.4.2 instead.
 
Do you have expirience with Plextor M6S on 10.10.4? I can't find info about it. Maybe it's good but on the other hand I want to not that it won't break after turn on trim in trimforce.
 
kristof46 said:
Do you have expirience with Plextor M6S on 10.10.4? I can't find info about it. Maybe it's good but on the other hand I want to not that it won't break after turn on trim in trimforce.
Click to expand...
Using a Plextor M5P and an M5S, M5P with 10.10.5 running on a MacPro 2009, M5S with 10.10.5 running on a 2011 MBP. No issues at all, using the trimforce enable command. Granted, not an N6S, but the controller on the M6S should be close to that on the M5S, haven't checked myself. Have you seen any reviews of the M6S saying the controller has changed significantly? I suspect you will be OK, Plextor has very good firmware, and they use good controllers too.
 
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Someone recommended to me Crucial BX100. He said that he doesn't have any problem with all three crucial's ssd. What do you think?
 
kristof46 said:
Someone recommended to me Crucial BX100. He said that he doesn't have any problem with all three crucial's ssd. What do you think?
Click to expand...
A year ago, I paid roughly 240 bucks for my Plextor 256GB M5P. Now that's about the price you will pay for a Crucial 500GB MX200 (supposedly even better than the BX100 line), now that's progress.
 
I've written to Plextor in my country and they replied. They showed me an article where someone give advice to not turning on trim in Plextor M6 Pro. Frank answer but it didn't coax me to buy Plextor.
 
I enabled trimforce with my Samsung 840 Pro 512GB. Works great. After I did that and rebooted, I rebooted again into Single user mode and did a fsck -fy or whatever that command is to check the disk and trim unused blocks.

I rebooted again and ran the BM test and got nice results for R/W (~500). Everything seems snappy.
 
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Yaboze said:
I enabled trimforce with my Samsung 840 Pro 512GB. Works great. After I did that and rebooted, I rebooted again into Single user mode and did a fsck -fy or whatever that command is to check the disk and trim unused blocks.

I rebooted again and ran the BM test and got nice results for R/W (~500). Everything seems snappy.
Click to expand...

Aren't you afraid about the concerns using TRIM with samsung pro/evo ssd? I have a samsung ssd too but i'm a little confuse about trim activation...

I've read this:
"Someone over at Ars Technica posted a warning about using TRIM with certain hard drives. I'll quote it here:

HEED THE DATA LOSS WARNING! There are a number of extremely buggy SSD models out there (like almost all the Samsung 8* and various Crucial models) that will permanently delete the wrong data ('https://blog.algolia.com/when-solid-state-drives-are-not-that-solid/') when issuing TRIM commands. The bug is not dependent on queued TRIM, it happens even when using the non-queued version. All the Samsung SSDs beginning with a "8" (840 and 850, both EVO and Pro) are known to have the data-destroying TRIM bug and TRIM is blacklisted on those drives on other platforms."

This is scary... In other away:
"So far there is no evidence indicating that the issue exists outside Linux. There are plenty of users running Samsung SSDs in Macs with TRIM enabled and I've yet to hear a single data loss issue."
 
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tunes10 said:
Aren't you afraid about the concerns using TRIM with samsung pro/evo ssd? I have a samsung ssd too but i'm a little confuse about trim activation...

I've read this:
"Someone over at Ars Technica posted a warning about using TRIM with certain hard drives. I'll quote it here:

HEED THE DATA LOSS WARNING! There are a number of extremely buggy SSD models out there (like almost all the Samsung 8* and various Crucial models) that will permanently delete the wrong data ('https://blog.algolia.com/when-solid-state-drives-are-not-that-solid/') when issuing TRIM commands. The bug is not dependent on queued TRIM, it happens even when using the non-queued version. All the Samsung SSDs beginning with a "8" (840 and 850, both EVO and Pro) are known to have the data-destroying TRIM bug and TRIM is blacklisted on those drives on other platforms."

This is scary... In other away:
"So far there is no evidence indicating that the issue exists outside Linux. There are plenty of users running Samsung SSDs in Macs with TRIM enabled and I've yet to hear a single data loss issue."
Click to expand...

I have used Trim Enabler and TrimForce on two Samsung 840 Pros in Mac minis with no probs at all.
 
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See this article:

http://www.macnn.com/articles/15/07...ail&utm_term=0_9d2654d74e-414517a898-70445813

The test article ends with:

So, we're not seeing any problems, and we've put years of use on the entire line in just a few weeks. We theorize that most of the complaints about drive corruption on the Linux side of the fence is more about queued Trim, which is not implemented in OS X. This isn't a guarantee, as it is a heavily time-compressed test, but we here at MacNN feel safe about using the highly regarded Samsung offerings without qualm.
Click to expand...

Lou
 
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I have 2 SSDs in my iMac 2011 samsung 840 PRO and micron m500, not in raid. im running el capitan 10.11.2. the SSDs r running all well by using Trim enabler App. do you suggest me to use" sudo trimforce enable " ? do i get any benefit by using apple native trim ?
 
yifuhood said:
I have 2 SSDs in my iMac 2011 samsung 840 PRO and micron m500, not in raid. im running el capitan 10.11.2. the SSDs r running all well by using Trim enabler App. do you suggest me to use" sudo trimforce enable " ? do i get any benefit by using apple native trim ?
Click to expand...

I have a few Mac minis with 840 Pros in them. I use trimforce now after years of using Trim Enabler. The main advantage I can see is that you don't have to keep 're-trimming' the drive when a new OS update is out. If you use Trim Enabler you have to run the app each time you do a major OS update usually. Trimforce is set and forget. I have had no problems at all running trimforce on Samsung 840 Pros and an OCZ Agility 3.
 
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Hi all,

I've just purchased a Samsung T1 external SSD to use with my work Macbook Pro Retina. I want to use as a separate OS X boot drive and use it for personal use.

I'm little concerned about what I've read about TRIM over USB. Is there any way I can get the drive TRIM enabled - please tell me there's a way otherwise I've got to return it! Or will it work ok without TRIM for a while? I'm waiting out an a Macbook Pro refresh and hoping to buy a seperate Macbook Pro in 6 months or so.

Thanks!
 
djsmith83 said:
Hi all,

I've just purchased a Samsung T1 external SSD to use with my work Macbook Pro Retina. I want to use as a separate OS X boot drive and use it for personal use.

I'm little concerned about what I've read about TRIM over USB. Is there any way I can get the drive TRIM enabled - please tell me there's a way otherwise I've got to return it! Or will it work ok without TRIM for a while? I'm waiting out an a Macbook Pro refresh and hoping to buy a seperate Macbook Pro in 6 months or so.

Thanks!
Click to expand...
There is no way to enable TRIM over USB. But using it without TRIM won't hurt anything. All that might happen is over a long time the write speeds may slow. These drives do have garbage collection built into the firmware, and many people use SSDs without TRIM for long periods of time and find the garbage collection routine is sufficient.

I'm using a USB SSD for clones and have not experienced any slowdown.
 
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Weaselboy said:
There is no way to enable TRIM over USB. But using it without TRIM won't hurt anything. All that might happen is over a long time the write speeds may slow. These drives do have garbage collection built into the firmware, and many people use SSDs without TRIM for long periods of time and find the garbage collection routine is sufficient.

I'm using a USB SSD for clones and have not experienced any slowdown.
Click to expand...

Thanks for the reply! I'll stick to my order then and give it a try. I've also read about Samsung forcing the use of their software in order to use the drive, but that's not the end of the world so will give it a go.

Thanks!
 
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