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

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1
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1answer
71 views

cpu is 100% used, yet no application shows significant usage

Since a few days my IMac started showing weird behaviour. In Activity Monitor it shows that my CPU is 100% used. Literally 0% idle, but there are no Applications using anywhere near this much ...
1
vote
1answer
74 views

Why does Finder slow down and start beach balling after heavy use?

I am experiencing the following issue in Finder on OS X Yosemite 10.10.5. After working for sometime heavily on it, usually about 10-15 minutes, navigating in directories, moving/copying renaming ...
1
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2answers
18 views

Fresh install after CPU upgrade

When installing a program on a Mac does the installer consider processor speed and number of cores in order to tailor the programs performance, and if so will upgrading processor architecture from ...
12
votes
5answers
2k views

How to slow down clock speed of processor

I recently bought a new MacBook Pro which sometimes goes too fast. I frequently program for Mathematica, and on my old 2007 MacBook Pro I usually got a feeling for inefficient code when it runs ...
1
vote
1answer
87 views

High CPU and energy usage in Safari

Energy impact of Safari is extremely high on my Macbook Air Mid 2013 El Captian 10.11.2. It lead to high usage of CPU (Temperature ~65.0°C) and the CPU fan is running in full speed (6500.0 RPM) ...
3
votes
0answers
70 views

Is it possible to disable CPU throttling on a MacBook Pro with a completely dead (not recognized) battery?

I have a MBP late 2011 running El Capitan, recently my battery died (x over the icon and "no battery available" in the dropdown.) I've noticed since then that CPU intensive tasks are very slow, and I ...
1
vote
1answer
40 views

Performance problems, possibly malware?

I have concerns about malware or something significantly affecting the performance of my iMac. As you can see from the screen shot below I have updated to OS X Yosemite Version 10.10.5, but I did ...
1
vote
2answers
278 views

Is there a task manager for OS X El Capitan?

Something's causing my Mac to bottleneck on startup and on wake. I'm curious if I can isolate this by leaving a monitor program running so I can see what's eating up the CPU. How can I check CPU ...
1
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0answers
27 views

Can I find information on whether the iMac with 250GB, 500GB, or 1TB of SSD storage differ in speed?

Apple doesn't say in their order or specs page, but I am wondering if there is any info on the iMac 27 Retina model, if the 250GB, 500GB, or 1TB SSD hard drive differ in speed? Such as the speed of ...
3
votes
0answers
99 views

iBooks on El Capitan

I have a large number of items in iBooks. some epub, lots of work related PDFs. in total around 20k documents that I want to sync to my iPad to carry around as a convenient source of reference. ...
1
vote
1answer
43 views

Macbook pro mid 2012 slow down

I'm actually asking about my wife's macbook pro which I don't use very often. It's slowed down quite a bit recently and apparently before the update to El Capitan. Programs have started to take a long ...
1
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0answers
34 views

MBA6,2 10.11 faulty temp sensor 230~300% kernel_task problem

Problem started after I sprayed some water during shower. Fan runs on 6500rpm as soon as I log on and kernel task stays on 230~300% even though laptop is not even warm. So I ran HWmonitor and it ...
0
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0answers
62 views

MacBook Pro 13-Inch Retina Mid-2014 slowing down badly

Recently I started facing issues with the web surfing and some features in the Mac OS X. For the most of the web surfing I use Google Chrome, and a few websites like Facebook lag a bit on my ...
1
vote
0answers
45 views

diagnose possible issue with MBpro 2012 running very slow

tl;dr Can a MacBook Pro become unbearably slow because of hardware issues, e.g a hard-drive failure? How can I best diagnose this? I own a MacBook Pro from 2012, which recently has become unbearably ...
1
vote
2answers
244 views

Suggestions to make a old Macbook Pro faster?

I got a Macbook Pro I think the year 2010. How can I make it faster because,it starting to get slow. Are there Free or Inexpensive Apps or tricks to make it fast? Thanks!
2
votes
2answers
411 views

Macbook Pro 15“ vs 13” - Performance vs portability

Currently I've got a MacBook Pro 15" (mid-2010, model 6,2), with 8 GB RAM, 2,5 GHz i5 Processor and Intel HD Graphics 288 MB video card. Seeing as it's 5+ years old, I really need a new one, ...
0
votes
0answers
109 views

Resolve constant fps drop

approximatly 2 weeks ago I could notice a constant fps drop from 60fps to 30fps in games (League of Legends). I tried to set the graphic settings from medium to low and to pin the fps to 60 with ...
0
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0answers
18 views

How to analyze Safari 9 during responsiveness issues?

I am having some odd problems since the 10.11.1 update wherein Safari has been performing rather poorly. It takes some seconds to even start responding when focus is switched over to it and other odd ...
0
votes
0answers
158 views

How do you remedy iMac (2009) slow start-up, and sluggish performance?

here are my system details: OS X El Capitan - gold iMac (21.5-inch, Late 2009) 3.06 GHz Intel Core 2 Duo 12 GB 1067 MHz DDR3 I have reduced startup to 1 or 2 apps, have at least 75GB avail on 500GB ...
1
vote
1answer
186 views

Mac book Pro is very slow on wifi connection

I have three computers in my home. My old computer is a lenovo w530 running windows 10 and my new computers are a 13'' and 15'' inch macbook pro 2015. All computers are connected to the same wifi ...
0
votes
0answers
25 views

Speed MacBook mid 2010 to run faster?

My MacBook has been slow for several OS updates; I've removed all documents and unused applications. Is there anything I can do to upgrade my mid 2010 MacBook to run faster?
0
votes
0answers
17 views

Why was there such a speed increase on cksfv on El Capitan?

I use cksfv regularly to check large files after I ftp them to my machine. Following an upgrade to OSX El Capitan yesterday I saw a dramatic increase in speed for cksfv. I'd say more than 2x speed ...
0
votes
3answers
3k 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
18 views

Equivalent of disabling services in Windows to lessen CPU/RAM usage for OS X?

When it comes to the underside of things I know a lot more about Windows than Mac/OS X, so I'm not sure if OS X is even like this in this aspect but what I'm wanting to know is I used to very ...
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votes
1answer
243 views

My MacBook slowed down after installing El Capitan

After I installed El Capitan on my MacBook, it has slowed down considerably. It is not lagging. It simply takes longer to respond as a little red colored wheel is turning where the cursor should be ...
1
vote
2answers
42 views

Identifying bottlenecks

In any computer, there is a bottleneck. The processor, the amount of memory, the bus to the hard drive, etc. I just ordered a 2010 MacPro, 12 core, and although the 12*3.33 GHz cores should give me ...
7
votes
2answers
929 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 ...
0
votes
0answers
97 views

Connect with Windows 10 to Mac Mini with Remote Desktop

I want to connect to my Mac Mini over Remote Desktop. So, I enabled Remote Management in Apple Preferences and connect using VNCViewer on my PC. Unfortunately, quality connection is very poor. For ...
1
vote
1answer
84 views

speed up iOS9 on iPad 4?

Ever since I've installed iOS 9 on my iPad it has been quite slow. The network seems slower, for example Netflix often times out. Chrome often shuts down, presumably because it is using too much ...
1
vote
0answers
41 views

Slow Mac Mini Performance [closed]

Mac Mini suddenly becomes slow and takes a long time to boot. But it runs fine if I clear the PRAM (by pressing Command+Option+P+R) at the system startup. But it becomes slow if i put my Mac on sleep ...
-2
votes
1answer
40 views

What Is The Fastest Fromatting Cluster Size? [closed]

I've bought a new USB 3.0 stick and I would like to optimize it for speed. Currently, I'm struggling with the cluster size or block size. I've read a lot about it but I could not find a clear answer ...
1
vote
0answers
27 views

Intel GPU drivers for Linux - can't decide

I installed Linux (Kubuntu) on my MacBook. I always wondered if my graphics card drivers were configured correctly, as any games (and some other applications) running on my computer were extremely ...
7
votes
5answers
5k 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, ...
0
votes
2answers
59 views

New top-of-the-line MacBook Pro suddenly starts acting old

About a week ago, I got a new MacBook Pro. I work a decent bit in video editing, among other things, so I had the processor upgraded to the highest available model. The box arrives, I open it, and my ...
8
votes
1answer
173 views

Why does Dashlane use so many ports?

I use Dashlane to store passwords, and I like it, but there's one problem I've had with it. I use Activity Monitor to see what's going on, and something strange has been happening with Dashlane ...
0
votes
1answer
29 views

Dead battery is replaced and recognized on MacBook Pro – processor speed is still cut

Just replaced dead battery on MacBook Pro Late 2011, and it is seen by OS (el Captain) and charging OK. Though, processor speed is still being cut and ticks only at 0.8 ghz and Apple Hardware test ...
0
votes
0answers
72 views

Why the iBooks lags while scrolling EPUB file?

As it is in the question above. Is there sth wrong with EPUB? Because I just bought a new iPhone 6S and iBooks lags while scrolling EPUB file. What can I do to improve performance while I scroll EPUB? ...
1
vote
0answers
176 views

Opening of encrypted sparse bundle in El Capitan very slow

I have a 76GB encrypted sparse bundle on the rMBP SSD drive. Mounting it by double clicking it in Finder was pretty much immediate in Yosemite. With El Capitan a popup appears with "Verifying 'name ...
-1
votes
1answer
58 views

How to compare Macbook Pro with other gaming notebooks? [closed]

Is the graphics card model enough to compare a notebook's gaming performance? If a non-Apple gaming notebook that has better external graphics card than MacBook Pro; does it mean that the game ...
0
votes
1answer
65 views

Computer is generally slow, Applications take 10 seconds - 3 minutes to launch, websites take 5-15 seconds to load, etc

I don't know why but my computer is generally slow. Some examples are: Applications take 10 seconds - 3 minutes to launch, depending on which application. Websites on the internet (all browsers) ...
5
votes
3answers
934 views

Acceptable CPU usage for 4 core 3.4gHz i7

Creating a kiosk application for the Mac and am testing performance and CPU usage. The activity monitor shows a total of roughly 90 to 150% CPU usage for the always up, kiosk processes. My first ...
0
votes
0answers
104 views

Office 2016 performance issues

I just upgraded to a Macbook Pro at work with Office 2016 installed and noticed that all of the Office applications (particularly Excel) take nearly 30 seconds to open (compared to roughly 7 seconds ...
0
votes
0answers
42 views

Kill Apps Using Too Much RAM

I have unfortunately been saddled with a developer laptop that isn't fast enough. Is there any app which can flag apps which use up too much RAM and prompt me so I can kill them ? For eg: Xcode , iOS ...
5
votes
2answers
1k 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 ...
0
votes
1answer
69 views

My SSD seems slow, could it be the link speed?

I just replaced my old HD from a late-2009 iMac with a new Samsung SSD 850 EVO 1TB. It was installed by an official Apple repair store but I am worried because it seems slower than my new macboook ...
0
votes
1answer
33 views

5 Minute Yosemite Boot Time?

My spring 2011 Macbook Pro with 5400 rpm drive takes 5 minutes from pressing the on button to boot. I have about 400 GB of RAW and NEF (Nikon camera) files and only Photoshop and Lightroom installed. ...
1
vote
1answer
55 views

How do I investigate my graphics card problem further?

I'm relatively new to OS X and I'm loving it. I've got a MBPr (15″ Late 2013 2.6HGz Core i7 Yosemite 10.10.5 16 GB 1600MHz DDR4 GT 750M, 2GB) that has been serving me brilliantly except for a very odd ...
0
votes
0answers
58 views

Degraded wireless performance on MacBook Air

I have a Mid-2013 MacBook Air that has been acting up lately. I initially started seeing issues with ridiculous jitter(100s of ms) half a year ago, but since I do not game a lot, I ignored them. ...
0
votes
1answer
65 views

How do I manually throttle the CPU usage of an app?

When I export a file from iMovie, it usually takes a long time but uses a lot of CPU, and my computer gets very hot(around 180-190ºF), even with my fan controller maxing it out. Would I be able to ...
2
votes
0answers
52 views

What is Yosemite doing when it has a seizure?

Ever since I installed Yosemite on my iMac, it's become unresponsive for about 5–10 seconds when I do any of a variety of common actions. The following usually trigger a delay: a few seconds of no ...