Questions dealing with performance of Apple hardware or software, especially about troubleshooting or improving poor performance.

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0
votes
2answers
118 views

Is disk image encryption slower than partition encryption?

I am considering two options to encrypt some data: add a new encrypted partition add an encrypted disk image Which option is faster in terms of disk read/write speed? I suspect that an encrypted ...
0
votes
0answers
24 views

Low speed rate when transferring data to usb device

When I try to copy data to my USB device I see a very low speed rate. For example, transferring a movie of 750Mb takes 10 minutes. I have tried with some other external USB hard drives but I am also ...
0
votes
3answers
236 views

Fully upgraded MBA or MBP (13")? [closed]

I'm looking to buy my first macbook and I am unsure which one to buy. I will use my laptop while travelling mostly next year on my working holiday visa for general purposes (web browsing, watching ...
4
votes
0answers
189 views

Higher kernel_task CPU usage when playing audio through Thunderbolt Display

I noticed today a higher kernel_task CPU usage when playing audio through Thunderbolt Display from my Macbook Pro (early 2011) on OS X Yosemite. Although the CPU usage is not very high (15 - 20%), it ...
2
votes
1answer
251 views

What do I need to do to get my Apple Watch apps to launch quickly?

Apple describes its Watch as being "ideal for quick looks and fast interactions", but most (in fact almost all) of third party Apple Watch app Dark Sky take 20-40 seconds to launch — during which time ...
103
votes
8answers
63k views

How to simulate slow internet connections on the mac

What's a good software solution to slow down internet connections on the mac for testing and simulations? My primary need is when testing code in the iPhone / iOS simulator, so slowing down the ...
1
vote
4answers
554 views

Best version of OSX for 2008 iMac?

(This is a follow-up to How to improve old, slow iMac -- new SSD? Or more RAM?) I replace the HD on our old 2008 iMac 8,1 with an SSD, and it seems much faster. However, it WAS running 10.9; now it's ...
2
votes
1answer
76 views

Fan for MacBook Air?

Macbook Air gets hot near its processor and gets sluggish for a while, whenever I make "heavy" tasks at the same time. I wonder if a fan under its base would make any difference since mac has no ...
1
vote
0answers
126 views

How can I speed up Enhanced Dictation's response/ processing speed?

It takes around ten seconds to process a voice command, whereas speakable items are instantaneous.
2
votes
0answers
220 views

High windowServer CPU usage on Yosemite

Since upgrading from Mountain-Lion to Yosemite, my MacBookPro5,5 (13", 2.26GHz C2D, GeForce 9400m) is (almost always) showing bad performance while working with native windows like Finder, System ...
2
votes
1answer
330 views

MacBook Pro a lot slower after reset

I recently had some issues with my computer and since I had a backup of all of my files I decided to just wipe the hard drive clean. After, what I thought, was a full reset I am beginning to suspect ...
2
votes
1answer
204 views

Why don't I see a significant boost in performance moving to SSD on MacBook7,1?

I've got a 2010 MacBook (MacBook7,1) with 8GB RAM running Mavericks 10.9. I recently replaced the stock HDD with a Samsung 850 EVO 250GB SSD and restored from a Time Machine backup. Though Disk Speed ...
0
votes
1answer
82 views

Recurring window manager performance issues in 10.10.x

I've been having graphical performance problems with Yosemite since early developer previews. The main expression of this is trying to switch applications. When going from Terminal to Messages or ...
5
votes
2answers
880 views

Is it better to have more cores or higher processor clock speed to decrease build time for iOS projects

I am trying to pick the most appropriate hardware to speed up build time for iOS projects - I don't know if I should favor faster processors (3.5 GHz) with fewer cores (6) or slower processors (2.7 ...
0
votes
0answers
202 views

Skype is using 60% to 80% CPU

I have a Mid-2014 15" MacBook Pro with an Nvidia graphics card. Skype uses around 60% - 80% CPU on my computer when I make a call (doesn't matter if it is video or voice call). I tried doing SMC and ...
0
votes
0answers
39 views

Slowness around Messages in iOS

I have a couple of different symptoms of extreme slowness in Messages which I think are related: Opening the Messages app itself sometimes takes 20+ seconds Opening a conversation within Messages ...
0
votes
1answer
292 views

Macbook Pro 2012 md101 gpu throttling

When playing games on Macbook Pro 13 inch 2012 md101 under Windows 8.1 the temperature rises to 100 degrees pretty fast and gpu starts throttling giving a huge slowdown in games. Is this a normal ...
1
vote
3answers
499 views

Performance issues, can I recover memory?

In the past month I am having some serious performance issues with my MacBook Pro (2008 model). From the activity monitor, I get that the CPU usage is low (25%), disk usage is low (256 GB SSD drive, ...
6
votes
2answers
4k views

How many CPUs can be assigned to a Parallels Desktop VM?

I have an iMac with the quad core i7 CPU which shows up in Mac OS X as an eight core CPU (thanks to Hyper Threading, I think). Parallels Desktop allows me to assign 1-8 cores to the Windows VM that ...
3
votes
1answer
166 views

MacBook Pro is slow, will adding RAM help?

I have an early 2009 13" MacBook Pro. I have used it a lot and at the moment and for a while now it is quite slow. I need to use various applications like Mathematica (for which it is quite slow if I ...
1
vote
3answers
489 views

Is there a way to stop the optimization process behind “Optimizing Your Mac”?

Using OS X 10.9.5 I got this message after logging out and back in with different UID. Screen is frozen except I can move the mouse courser around just cannot select anything. Display sleep mode does ...
0
votes
1answer
341 views

Will the new MacBook be turbo charged?

The new MacBook 12" has been launched and on the apple store the processor says 1.1GHz dual-core Intel Core M processor (Turbo Boost up to 2.4GHz) Does this mean that the Core-M processor will ...
4
votes
2answers
2k views

How to view CPU clock rate in GHz or MHz?

I am looking to get the new 12″ MacBook and as a result I would like to know the clock speed (in GHz) my current MacBook Air (late 2010) is running at so I know the processor on the MacBook will cope. ...
0
votes
0answers
133 views

Pros and cons to JBOD setup on MacBook Pro with two internal SSDs

I've got an original Apple-installed 120GB 3G (3Gb/s) SSD which I'll be moving into the optical bay using an OWC "Data Doubler" and swapping a new 240GB OWC Mercury Electra 6G (6Gb/s) SSD into the ...
2
votes
1answer
2k views

New MacBook Pro slow performance, battery not working

I have a very recent (mid-2014) MacBook Pro Retina 15" that has been working fine since I got it (about two months). Suddenly, it has begun to run very slow in all apps, even though CPU usage is very ...
2
votes
1answer
823 views

Why is cp command 4 times slower than copying in Finder in OS X 10.6?

I accidentally stumbled upon this issue: Copying a 119 MB zip file took 4 times longer in Terminal (cp) than in Finder! I copied a file of 119 MB size in Terminal with time cp file.zip file2.zip ...
3
votes
4answers
4k views

Web browsing on Mac slows down after a few days of use

When trying to browse any website, such as nytimes.com, yahoo.com, etc, it take sometimes anywhere from 15s-120s for the page to display. For example, in Chrome, when I browse to nytimes.com, in the ...
0
votes
2answers
385 views

Poor sluggish performance after upgrading to Yosemite

I am facing very sluggish performance in my MacBook Pro after I upgraded it to Yosemite. Mine is 8GB, i7 mid 2012 system. Usually I find my unused RAM <25MB even if I work in terminal, say around ...
1
vote
3answers
276 views

Would replacing Macbook's HDD to a new one speed it up?

Macbook Pro 2009 with 500 GB HDD and 4G RAM running Yosemite. Been slow last couple of years or so. Got 30 GB left out of 500 GB hard drive. Opening an app can take minutes and dozens of icon bounces. ...
0
votes
1answer
3k views

Very slow to start processes or open applications

I have a Mac Mini (Mid 2011, 8GB RAM) with Yosemite which is getting slower and slower. But the weird thing is that only opening applications or starting new processes (from the terminal) is terribly ...
1
vote
0answers
48 views

SSD Performing Poorly

I have a MBP 17 2010, equipped with a Vertex 2 SSD 120GB as boot disk. It's an old hardware but I don't want to change it, the problem is the SSD is performing poorly : The SSD health report is ...
1
vote
0answers
367 views

Using scaled resolution in Macbook Pro Retina can cause overheating?

I'm using a late 2014 13 inch macbook pro retina. I'm using a scaled resolution of 1680*1050. When using this resolution, i don't know why, my laptop gets overheated. How can i fix it?
0
votes
1answer
34 views

Does `dtruss -p PID` list system calls made before dtruss was run?

I'm trying to diagnose an intermittently slow command. When I run the command and see it hanging, I press control + t to get the PID, then in another tab, run diagnose [PID] - eg, diagnose 123. I've ...
1
vote
2answers
2k views

On Macbook Pro, how to tell if my hard drive access speed is a bottleneck to my current computer performance?

I'm considering giving my 2010 Macbook Pro an upgrade. Whether upgrading its 500 GB hard drive to SSD drive is a priority depends on how much it bottlenecks the computer's performance. Is there a ...
0
votes
1answer
101 views

Is it possible to reserve exact amount of space for the indexing and virtual memory?

Is it possible to reserve exact amount of space for the indexing and virtual memory? I have Macbook Air with 128 GB SDD (with OS X Yosemite). When I run out of memory (free space less than 1 GB) the ...
1
vote
0answers
67 views

Optimize filesystem for speed over integrity

On Linux, I use the noatime,nodiratime,nobarrier,data=writeback mount optioins in /etc/fstab to trade filesystem safety/consistency/integrity for speed which makes sense for local development. Is ...
1
vote
1answer
934 views

Is there a problem with GeForce 750M performance on gaming?

I play games on my Mid-2014 retina MBP, which has both Iris Pro and GeForce 750M 2GB. One of the games that I play (League of Legends, which has a 'beta' OS X client, but I highly doubt that this is ...
1
vote
2answers
458 views

Kernel_task boosts CPU to 300%-500% (Yosemitte MBP 2011 without a battery) [duplicate]

Long story short, my oldie MBP 2011' battery started bloating, I've contacted a repair service center and they advised me to remove the battery and use it on AC power, while they get a new battery for ...
0
votes
1answer
326 views

Use *Two* Thunderbolt/Firewire adapters on MacBook for 400 and 800 devices?

I'm completing an audio recording setup. Equipment: Macbook 13" Retina late 2012 with Two Thunderbolt ports One Focusrite Saffire audio interface (Firewire 400) One OWC Mercury external SSD drive ...
1
vote
0answers
182 views

Difference in performance between iOS devices

I'm developing a game for ios and notice surprising results performance-wise between my devices. for example, my iphone 5 will perform better than my ipad mini retina. I really have no point of ...
1
vote
1answer
122 views

How to manually control processes launched on start?

Every time my Mac starts, about ~210 processes are launched, requiring about ~1000 OS Threads. With every Apple update this number increases. My laptop freezes for 1-3 min a couple of times per week ...
-1
votes
3answers
4k views

Why my MacBook Pro is so slow?

I have a MacBook Pro Mid 2012 (MacBook Pro 9,2). Few years ago I was using previous versions of Mac OS X, and it was a great experience. I've found it delicious OS for personal use. Today I use ...
1
vote
0answers
383 views

Chrome/Chromium scrolling is choppy and eats CPU

This problem has been around since I got my Macbook Pro Retina 2013, 13", 2.4Ghz, 16GB RAM, 256 GB SSD. Currently it's running the latest version of OS X Yosemite. Chrome's scrolling performance can ...
0
votes
1answer
198 views

Are there any autocompletion input tools for English? Except default TextEdit app

I'm a Mac user who is a Japanese. I usually type Japanese using Google IME which enables me to type it with predictive texts so that we can type it faster. Google IME http://www.google.co.jp/ime/ ...
0
votes
1answer
368 views

Macbook Pro (Late 2010) slow after installing Mavericks

I've recently updated my 15-inch, Mid 2010 Macbook Pro to Mavericks. Since then, it's been running incredibly slow and tends to hang while using programs such as FireFox or Excel. If I look at the ...
0
votes
2answers
590 views

How to speed up old MacBook Pro15 inch late 2007 with 4GB RAM (2.4 GHz)

I am running 10.9.5 (Mavericks) and have about 12GB available on my hard drive with 2.2/2.4 GHz. I have noted that performance has been getting slow (esp. on startup) and was wondering if there are ...
1
vote
0answers
50 views

Disk activity, how to improve it?

Activity Monitor tells me that my Disk Activity is too high even when I'm not running 'heavy' programs. I have an iMac with Mac OS 10.6.8, processor 3.06 Ghz Intel Core 2 Duo, Memory 4GB. Is there ...
0
votes
1answer
519 views

Deleting content of /private/tmp moved on different HDD

I have a Macbook pro with 2 internal HD (stock HD for data and data doubler + SSD in place of the optical drive, hosting the OS). I'm now trying to optimize this setup to take into account the ...
0
votes
3answers
401 views

Macbook Pro 13" Mid 2014 disk defect?

I just bought a MBP 13" mid 2014 with a 128 GB SSD. When doing a disk speed test with the Black Magic Design-app, I only get about 210 MB/s write and about 510-550 MB/s read. All the benchmark videos ...
5
votes
2answers
23k views

How can I monitor the FPS in OSX?

I'm looking for a solution to monitor the refresh rate of the OSX. In several reviews like this one about the retina Macbook Pro by Anandtech they report actual fps to discuss the performance of ...