OS X 10.10.4 is Out

[terpsy]

Latest update 10.10.4 is live!

 

[Kaido]

iOS 8.4 too

I hope it fixes my Bluetooth bug, just keeps disconnect from my car & also making calls that hang up immediately that don't go anywhere.

 

[mmntech]

10.10.4 finally adds TRIM support for 3rd party SSDs, but you have to manually enable it through the Terminal.

sudo trimforce enable

Then follow the on screen instructions.
http://arstechnica.com/apple/2015/0...lows-you-to-enable-trim-for-third-party-ssds/

 

[SKORPI0]

https://support.apple.com/en-us/HT204928

The OS X Yosemite v10.10.4 update improves the stability, compatibility, and security of your Mac.
This update:

• Improves networking reliability
• Improves Migration Assistant reliability
• Addresses an issue that prevented some external displays from functioning properly
• Improves the reliability of upgrading iPhoto and Aperture libraries to Photos
• Improves reliability when syncing photos and videos to iCloud Photo Library
• Addresses an issue that could cause Photos to unexpectedly quit after importing some Lecia DNG files
• Resolves an issue that could delay outgoing email messages in Mail
• Fixes an issue where a website could prevent the user from navigating away by presenting repeated JavaScript alerts in Safari

 

[Eug]

10.10.4 finally adds TRIM support for 3rd party SSDs, but you have to manually enable it through the Terminal.

sudo trimforce enable

Then follow the on screen instructions.
http://arstechnica.com/apple/2015/0...lows-you-to-enable-trim-for-third-party-ssds/

Yeah, this is nice. Samsung 840 on my 2009 Core 2 Duo 13" MacBook Pro:

No need for TRIM Enabler anymore either.

 

[mmntech]

Yeah, this is nice. Samsung 840 on my 2009 Core 2 Duo 13" MacBook Pro:

No need for TRIM Enabler anymore either.

Just a word of warning before people go hog wild, check the comments in the Ars article. Some SSDs are not compatible. It's a problem with the drives themselves, not OS X.

 

[Eug]

Yes, some older drives may not be compatible. I figured my current Samsung 840 would be compatible so I went ahead and turned on TRIM.

Mind you my older Kingston V+100 drive gets no significant improvement with TRIM anyway. This drive has a controller that was used in Macs before Apple enabled TRIM even for its own SSDs. The Toshiba controller has super hardcore aggressive garbage collection. Here's the review of that drive from AT's ex-boss, Anand:

http://www.anandtech.com/show/4010/kingston-ssdnow-v-plus-100-review

Now look at Kingston's SSDNow V+100, both before fragmentation and after:

There's hardly any difference. Actually the best way to see this in work is to look at power draw when firing random write requests all over the drive. The SSDNow V+100 has wild swings in power consumption during our random write test ranging from 1.25W to 3.40W. The swings would happen several times in a window of a couple of seconds. The V+100 is aggressively tries to reorganize writes and recycle bad blocks, more aggressively than we've seen from any other SSD.

The benefit of this is you get peak performance out of the drive regardless of how much you use it, which is perfect for an OS without TRIM support - ahem, OS X. Now you can see why Apple chose this controller.

That said, TRIM didn't cause any problems with it when I enabled it in the past on this drive with TRIM Enabler.

 

[stlc8tr]

Yes, some older drives may not be compatible. I figured my current Samsung 840 would be compatible so I went ahead and turned on TRIM.

According to the report, all Samsung 8xx series drives are affected by the TRIM bug.

But it's not clear from the article how easy it is to trigger the data loss problem.

 

[Eug]

Which report?

In the meantime I've just done a sudo trimforce disable.

 

[stlc8tr]

Which report?

In the meantime I've just done a sudo trimforce disable.

https://blog.algolia.com/when-solid-state-drives-are-not-that-solid/

Personally I'm skeptical. I've never heard of these guys and no one else has reproduced their results.