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

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0
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3answers
3k views

Should I upgrade my iPad 2 to iOS 9.3 from iOS 5.1.1? ( Late March 2016)

I recently recovered my lost iPad 2. I cannot afford a new tablet at the moment and I will use my iPad 2 as a daily driver (to browse the web, read books, college lectures, play games and other light ...
3
votes
1answer
45 views

Is there perf profiler tool for Mac to trace all page faults?

I'm looking to install perf which is a kernel profiling tool for Linux. Basically I'm trying to trace all page faults, so I run equivalent of: sudo perf record -e page-faults -ag Is it possible to ...
0
votes
1answer
15 views

Should I have my MBP “take breaks” while working hard, or are its fans sufficient?

I want to transform some data by doing (from Terminal) a Python command that runs on a single core only and doing something I expect to be CPU bound once data is pulled from disk and is accessible at ...
0
votes
0answers
55 views

Mac OS X, TrueCrypt/VeraCrypt, Encrypted HFS+, performance

My question is about the disk I/O performance with different kinds of encryption as it seems that my laptop is suffering from some problems. First, let me describe my hw/sw setup: MacBook Pro (15-...
1
vote
2answers
5k 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 ...
8
votes
3answers
3k views

What is 'symptomsd" and why is it at times using 60% of my iMac's CPU?

There is a system process on my iMac running El Capitan called "symptomsd" that has been consistently bouncing back and forth between about 20% to 60% of the CPU resource on my iMac. It is running ...
10
votes
2answers
4k views

Tool for determining performance bottleneck

I am using my early 2011 MacBook Pro for iOS development, Photoshop work, and the like, and it is at times quite sluggish. Is there a tool that I can just run for a day, and then look at the ...
1
vote
1answer
581 views

How to monitor and control thermal CPU throttling in OS X?

I recently came across the Intel Extreme Tuning Utility for Windows. I tried it under Bootcamp Windows and it was very interesting to learn in what situations my MacBook Pro's (mid2012) CPU is doing ...
1
vote
1answer
23 views

Is there a meaningful performance index to compare various MBP generations?

Is there a simple but meaningful performance index for comparing various generations of MacBooks, and their different configurations, with a focus on everyday graphics and web development work? I ...
0
votes
3answers
6k views

Very Slow Download Speeds from Apple Applications (Safari and Mac App Store)

After I restored my computer to a clean reinstall of El Capitan, I have experienced incredibly slow download speeds in Apple applications only (Safari and the App Store). I tested downloading a file ...
0
votes
1answer
96 views

Simcity 5 on the new Macbook 12" 2016 Model

I bought a Macbook 12" early April 2016 Model the other day and I really want to know if t will run Simcity 5. I tried running 'Can I Run It' but that doesn't work on Macbook's so I need some help to ...
7
votes
5answers
4k 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 ...
0
votes
1answer
27 views

Fastest way to disable daemons gone wild; how to know if attempts to interrupt will break app?

As software advances so do the installers, which have become vehicles for all kinds of needless bloat ware. I do not believe this to be an inevitably, its possible for software to progress without ...
1
vote
1answer
45 views

Why is my Mac Mini not Turbo Boosting?

I have a late 2014 Mac Mini, with the i7 option, 3 Ghz turbo boosting to 3.5 Ghz according to Apple. To give the system some work to do I am running a ray trace: $ time povray --benchmark +WT1 This ...
1
vote
0answers
83 views

iMac 5k internal SSD vs external SSD performance

Can anyone point me in the direction of a real-world performance comparison between a iMac 5k's internal SSD and an external one (ideally one on thunderbolt and one on usb)? Basically, I want to know ...
0
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0answers
36 views

Using disk makes things slow on El Captain

If I run following alias in my $HOME directory: biggest_files='find 2>/dev/null . -type f -ls | sed -e "s/[[:blank:]][[:blank:]]*/ /g" | cut -d" " -f 7,11- | sort -nr | head -25 | awk "{ printf \"%...
0
votes
1answer
315 views

How to stop kernel_task from constantly using over 400% CPU?

Configuration: Model Name: Mac mini (Late 2012) Model Identifier: Macmini6,2 System Version: OS X v10.11.3 (El Capitan) For the past few weeks, kernel_task has been using over 400% CPU and its ...
3
votes
1answer
26 views

How Does El Capitan Improve Application Load Times?

One of the claims for El Capitan is that it improves load times for applications up to 40%, but has anyone identified what this actually means? Are only specific applications affected? For example, ...
10
votes
3answers
7k views

CPU Pushed to Too Much Usage by kernel_task

I have a Macbook Pro Retina with the following hardware: Model Name: MacBook Pro Model Identifier: MacBookPro11,1 Processor Name: Intel Core i5 Processor Speed: 2.4 GHz Number of Processors: 1 ...
1
vote
3answers
311 views

Is this external USB3 drive really this slow for my Macbook TimeMachine backup?

I got myself this WD 2TB USB3 external harddrive for backups: http://amzn.to/1X8b3a8 I connected it to the USB 3.0 port of my mid 2015 Macbook Pro 15". When I run Time Machine, it really takes ...
1
vote
3answers
4k 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
0answers
131 views

WiFi slow down drastically when iPhone 6s connected

Good day everyone.. (not good for me obviously) I have questions about my iPhone 6s (iOS 9.3.2) connecting to my TP-Link Router (Model No. TL-WR740N / TL-WR740ND) and its performance. Whenever I ...
0
votes
1answer
21 views

MacBook gets heated up

I am running on macbook pro 2015. Since, few days, I have noticed a significant degradation in it's performance. Here is the screen shot of the activity Monitor. Can someone please help me on, how can ...
0
votes
0answers
42 views

I don't get proper internet speed on mac

I don't get proper internet speed on my macbook pro mid 2015 model. My ISP have one FTP server where I get on average 5 to 6 MB/s speed and internet speed about 300 KB/s in other website on my other ...
3
votes
1answer
47 views

Is there any part of OSX that gets a significant speed boost from Intel AES instructions?

I've been comparing some specs between Mac Pro models, specifically with the jump from Harpertown (a.k.a. Core 2) to Gulftown/Westmere (a.k.a. Core i7). While there were expected incremental ...
103
votes
10answers
79k views

WindowServer high CPU on Yosemite

This is a follow up to So my Yosemite install is slow - what to do? Since installing Yosemite a week or so ago my machine is very sluggish. I am a web developer so I change windows/apps a lot. ...
1
vote
2answers
30k 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 doesn'...
3
votes
2answers
144 views

Macbook Pro Hard drive speed

I have an early 2011 Macbook Pro with a Toshiba MK7559GSXP 750GB 5400rpm hard drive (that has about 48GB free) and running El Capitan. Recently I had the feeling that things were running slowly (and ...
2
votes
4answers
100 views

Does force closing apps have any benefit on iOS devices?

I've gotten mixed answers from various websites and people concerning this question, and I wanted to put it out there for all of you to answer once and for all. The question is, does force closing ...
1
vote
2answers
49 views

iMac (Late 2015) using swap when there's still plenty of RAM left

My wife's new iMac is behaving rather oddly. Despite being a pretty powerful machine, it's rather slow and laggy. I looked into it, and it seems her swap memory is maxing out, even though there's ...
0
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0answers
19 views

Typing and UI lag, yosemite

I have a macbook pro 13" mid 2009 with SSD and 8GB RAM. It runs Yosemite 10.10.5. When I changed the original HD with an SSD and installed Yosemite (a few months ago), the computer started working ...
0
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0answers
36 views

Is there a way to change only the horizontal scrolling speed on an apple corded mouse?

I have the latest macbook pro running the latest osx and i am using the corded mouse. Hope i could use the magic mouse but i am stuck with the crap corded one for now. I can say i am OK with it, apart ...
0
votes
0answers
11 views

What happens when PCIe boost circuits are overloaded?

In my understanding, the 2010 Mac Pro is rated for 75W of power for each PCIe slot, plus 75W for each of the two 6-pin boost (aux) circuits. I know it's possible to exceed these limits, because I do ...
2
votes
0answers
32 views

Why does my Mac slow down when the volume/brightness indicator fades out?

I frequently change the volume and brightness on my computer. Usually I modify them to more or less match my surrounding physical(!) environment. But there's this one annoying quirk with changing my ...
1
vote
1answer
74 views

Do Sophos and Spotlight conflict and if so, how can I run both applications without problems?

I just got a brand new 13" MacBook Pro at work. I have noticed that Spotlight has been running constantly giving me ~4 hours of battery life. The motivation for getting this laptop was to have the ...
1
vote
1answer
32 views

Why is this stock iMac so slow at launching apps?

I bought a refurb iMac from apple.com: 21.5", late 2013 2.9 GHz Core i5 8 GB DDR3 Geforce GT 750M 1024 MB 1 TB SATA Disk No SSD, but this should still be performing well for basic tasks. It's ...
0
votes
0answers
49 views

Java/Scala programs running on my mac are slow

I'm using my Mac machine (Macbook Pro 2015, with SSD) for work, doing mainly Java/Scala development with it. The machine I'm currently using is about half a year old, fresh install, with some ...
1
vote
0answers
446 views

Is there source code or an update for the Mac Pro 3,1 overclock utility that ZDNet produced several years ago?

The Mac Pro from 2008 (MacPro3,1) is still a fairly relevant machine in the modern OS X as not only does it run the latest releases of OSX, but also the 8 CPU cores that it came with provide enough ...
1
vote
0answers
48 views

Why exactly do people consider the Mac Pro 3,1 (Early 2008) PCI bus too slow for fast GPUs?

I've upgraded the GPU on my MacPro3,1 (Early 2008) from the original 8800GT to a 6870 and things were fine. I've been looking recently to take it another notch up the ladder, but I've stumbled across ...
0
votes
0answers
22 views

Is there an alternative to hiding an application that will reduce the performance demand?

I'm just wondering if there is an alternative to hiding an application, that can reduce the performance demand of a program. I'm curious because I use blender from steam, but steam won't close unless ...
0
votes
0answers
20 views

Limit frame rate on specific apps? (speedhack)

I'm working on an application that tests a player's reaction speed level by level, however I'm having difficulties implementing higher levels as my own reaction speed is only average. Is there any way ...
1
vote
1answer
105 views

VLC 2.2.2 and OS X El Capitan Issue

I have been using VLC Player for 7 years and after update to 2.2.2 It is really painful to use it with El Capitan. It is very slow to forward or backward, It constantly freezes and lots of time the ...
0
votes
1answer
49 views

Why Gigabit Ethernet Direct Connect is not default at Macs?

Trying to connect two Macintoshs with a Ethernet cable (capable of Gigabit speed, of course) will not automatically set a gigabit connection. Instead of this, a 100MB connection is established. Does ...
17
votes
8answers
20k views

Time Machine ridiculously slow after El Capitan upgrade

I recently updated to El Capitan, and told Time Machine to backup. It got stuck on Preparing Backup for hours, so I stopped it, deleted the InProgress file, rebooted and tried again. After ~30 mins, ...
3
votes
1answer
45 views

MacBook Pro mid 2012 13.3 HDD cable performance

I am helping a friend to fix her MacBook Pro 13.3 performance problems. It was barely booting, and terribly slow for disk seeks. Then I replaced the HDD. It was perfect with new SSD and El Capitan ...
0
votes
0answers
6 views

iPad Update from iOS 6 -> iOS 8 and back again, possible? [duplicate]

I have an iPad 3 with iOS 6 which runs buttery smooth. I want to update to iOS 8, since I saw that it ran quite okay on my friend's iPad. My iPad 2 with iOS 9 has become unusable though, too slow, and ...
1
vote
0answers
65 views

Severe performance issues with my Macbook Pro Retina 13 - mid 2014

A few weeks ago I bought a used Macbook Pro Retina and I've been having severe issues with it since. The first thing I did when I bought it was to upgrade from whatever version of OSX it was using to ...
1
vote
4answers
498 views

What's slowing down my Mac?

I have the following mac: iMac (27-inch, Late 2013) 3.4 GHz Intel Core i5 8 GB 1600 MHz DDR3 NVIDIA GeForce GTX 775M 2048 MB It has a HDD, and I have 240GB out of 1TB free space. I'm on OS X El ...
0
votes
1answer
230 views

How can I test my LAN speed between Mac and Apple TV?

How can I test my LAN speed when I do not have two computers? I have a Mac, an iPhone, and Apple TV. I want to see the strength of my home network. I don't care about testing my internet connection, ...
3
votes
3answers
4k views

Mac Pro Memory - Should I use 8 RAM slots in dual-channel mode or 6 RAM slots in triple-channel mode?

I have a Mac Pro tower with a 2 x 2.66 GHz 6-Core Intel Xeon chipset, and 8 RAM slots. I have been told because of the processor's triple-channel memory capability that I should be installing RAM ...