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

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9
votes
2answers
6k views

Computer slows when battery is low

My Macbook Pro running Mountain Lion slows down dramatically when the battery is below 4-5%. All the applications running are very slow to respond, and several have the "Application not responding" ...
1
vote
2answers
105 views

kernal_task super high yosemite, cpu frequency super low

I'm trying to solve the mystery of a crazy high cpu usage on kernel_task. MacBook Pro (Retina, Mid 2012), 2.7 GHz Intel Core i7, Yosemite 10.10.2 I saw some advice to download the Intel Power ...
1
vote
1answer
17 views

Mac Mini (Late 2009) - Recommended OSX Version for it?

I have a Mac mini (Late 2009) (hw.model: Macmini3,1, 2 GB RAM) that I've got hooked on my TV primary as a "media consumption" device... but a while ago I updated it to: Mac-mini:~ javier$ sw_vers ...
0
votes
1answer
47 views

How to debug Safari CPU utilization and spinning beach ball?

I have been plagued by performance problems in my late 2010 MacBook Air for several months now. Most of it seems centred around Safari. I regularly get very high fan speeds (loud to the point of very ...
0
votes
1answer
10 views

Low Pings on my game? [closed]

I conducted a ping test between myself and the games server (Ultima Online Razor) and the average ping was in the 50-60's which is pretty good. No dropped packets after doing a loop test. However, ...
1
vote
0answers
17 views

What programs actually use the memory on a Graphics card?

I noticed that the Graphics Card memory is hardly used at all, even during Cinebench 3D testing despite the FPS being high. What programs actually use the graphics card memory? Trying to determine if ...
0
votes
0answers
18 views

Is there a program to monitor GPU processor usage in Yosemite?

iStat only reports memory usage, but I'm looking to see how much of the processor is being used from the AMD M290x graphics card in my iMac. Is this possible?
1
vote
2answers
39 views

Will upgranding my MBP to an internal SSD, improve also speed of reading external non SSD HDrives?

So, I'm thinking of upgrading my MBP (13' late 2011) with an internal SSD drive. I'm wondering if the increase in speed of read and write on the SSD internal drive, will increase peroformance and ...
0
votes
2answers
2k views

Mac has become insanely slow : Processes SystemUIServer, UserEventAgent and loginwindow using a lot of memory

I have been using my Mac for for many months without any problem. But recently all of a sudden the Mac became insanely slow. I opened Activity Manager to see what was happening. For three processes ...
0
votes
1answer
43 views

Apple Thunderbolt or HDMI for external monitor

Is there anybody who can answer me this question? I have a Macbook Pro Retina 15" quad i7 etc and I use some programs/applications wich need a lot of cpu and also the macbook heats up like hell. I ...
4
votes
3answers
3k views

How can I diagnose or fix the CalendarAgent occupying a whole CPU on Mountain Lion?

Since I upgraded to Mountain Lion from Lion I see the CalendarAgent process occupying a large amount of 1 CPU on my late-2008 MacBook Pro. To fix this (as suggested by a Google result) I tried ...
-1
votes
1answer
48 views

How much faster is an external SSD than external HDD if internal drive is SSD?

I'm running intensive animation software and am having speed issues. At the moment I'm just working from an internal SSD. How much faster should it run if I put the project files on an external HDD? ...
35
votes
13answers
37k views

Why would I disable swap file in Mac OS X?

I came across a thread about installing an SSD drive in MacBook Pro. Someone in the comments also recommended to disable the swap file but didn't say why: sudo launchctl unload -w ...
0
votes
3answers
1k views

Performance Tweaks/Tools for MacOS (Macbook Pro)

I am using a Mid2010 Macbook Pro (2.5 GHz i5, 8GB RAM, regular HD (no SSD) and still on MacOS 10.9). I am fully aware of the fact that, as the computer gets older, it may get a little slower due to ...
1
vote
3answers
5k views

Why do the Image Capture Extension and softwareupdated processes consume so much memory?

I recently updated my 2008 MB Pro (2 GB RAM) to Yosemite from 10.6 and I've found that it's often unusably slow. After keeping an eye on Activity Monitor over a couple weeks, I notice that the Image ...
0
votes
2answers
43 views

Can a MacBook Pro13-inc, 2.9GHz Dual-core Intel Core i7 use CL9 memory reliably?

Looking for a memory upgrade for a macbook pro 13-inc, 2.9GHz Dual-core Intel Core i7, The Apple specifications call for CL11 RAM. The question is if it will work fine with a CL9 memory so I can take ...
1
vote
3answers
156 views

quicklookd and revisiond eating my CPU

I'm observing regular and abnormal CPU usage on my macbook pro. quicklookd in par with revisiond are eating together over of 50%. It drains my battery significantly and makes the whole machine hot. ...
1
vote
1answer
5k views

What is causing slow Wi-Fi speeds on my Airport Extreme?

I have a recent model (bought 1-2 years ago) Airport Extreme that, until yesterday, has worked flawlessly. Starting yesterday, my wireless speeds have tanked. I first suspected my ISP, but that ...
-1
votes
2answers
49 views

Why is my Air Port suddenly slow?

For a bit over a day, by AirPort Extreme has been much slower than usual. Over the past year I've had lastTxRate pretty consistently around 250, which is close to the maxRate I get (289). Lately ...
0
votes
1answer
52 views

What does “Increase Contrast” option change?

Many forums say, that enabling Increase Contrast option in Accessibility Preferences helps Yosemite to make the animations, like entering Mission Control to be much smoother. This is also consistent ...
8
votes
8answers
6k views

Yosemite: Accessibility zoom + multiple monitors = poor performance

Ever since upgrading to Yosemite, the accessibility zoom feature is unusable when connected to an external monitor. Steps to reproduce: Enable Zoom in System Preferences - Accessibility. Connect an ...
1
vote
2answers
2k views

iPhone slows down entire home network

Ever since the automatic upgrade to iOS 7, an iPhone that connects to my Linksys WRT54GL router running DD-WRT, slows down all other connections, from any other device. Download speed is reduced by a ...
0
votes
2answers
289 views

Upgrading macbook pro to mavericks - performance question

My MacBook Pro: MacBook Pro (15-inch, 2.53 GHz, Mid 2009) Memory: 8 GB Currently run Snow Leopard 10.6.8 and also in a partition I have 10.8.x installed. The most of my work is being done in 10.6.8, ...
0
votes
2answers
70 views

Why Does A New Mac Pro Only Support a Single Internal Drive?

Every graphic-heavy application I have used has recommended storing files it uses on a separate disk from the boot disk (preferably an SSD), however with the new MP this isn't an option. The only way ...
1
vote
4answers
709 views

How to keep an SSD in shape on Yosemite?

As of OS X 10.10, Apple uses kext signing. Ever since it has become difficult and dangerous to manually activate TRIM for third-party SSDs on OS X. That means users with non-Apple SSDs will sooner or ...
1
vote
4answers
12k views

High memory usage, macbook pro retina feeling sluggish

My Macbook Pro Retina seems to be feeling sluggish and I don't think it should at all. I'm running: photoshop, 1080p movie on VLC plugged into a Thunderbolt Display. Looking at the activity monitor ...
8
votes
4answers
20k views

Kernel_task using 300% CPU time, high fan speed and slow computer in MacBook Pro

My MacBook Pro has become slow lately. Activity monitor shows kernel task is using around 300% CPU. The fan is always on at high speed. Below are the details of my computer: Macbook Pro 13-inch, ...
0
votes
0answers
35 views

High CPU usage during disk operations

Early 2009 17" MacBookPro (MacBookPro5,2) 2.66 GHz Intel Core 2 Duo OS X Yosemite 10.10.3 240 GB OWC Mercury SSD, installed in 2010 I've had issues with high CPU usage for a while now. The original ...
0
votes
2answers
45 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
19 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
86 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 ...
0
votes
0answers
125 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
108 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 ...
79
votes
8answers
48k 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
213 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
43 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
74 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.
1
vote
0answers
150 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 ...
0
votes
0answers
106 views

troubleshooting Finder (and disk access?) speeds — Dropbox extension problems?

I am on Yosemite 10.10.3, though in the public beta program (which now is in sync with releases). I am also in the Dropbox beta, now on 3.5.58, for what it's worth. File access is curiously slow now. ...
2
votes
1answer
105 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 ...
3
votes
1answer
133 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
51 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
219 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
110 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 ...
3
votes
1answer
390 views

Ridiculously slow MacBook Pro

I have a MacBook Pro (I think mid 2012). About three months ago it started running really slow, so I renstalled the OS with a recovery partition. For a few weeks it ran very well with an overall very ...
0
votes
0answers
31 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
104 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
419 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
2k 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 ...
1
vote
1answer
67 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 ...