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

learn more… | top users | synonyms (2)

4
votes
0answers
228 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 ...
4
votes
0answers
210 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 ...
3
votes
0answers
210 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. ...
3
votes
0answers
1k views

helpd uses 100% CPU after installing any application with documentation

I see that after installing a software that ships with documentation in OS X’s help document format, the helpd process uses 100% CPU for up to 5 minutes or so. I also see this when you first install ...
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 ...
2
votes
0answers
57 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 ...
2
votes
0answers
533 views

Airport Extreme (5th gen) throttling ethernet internet speeds

I purchased the router in 2012, and am experiencing slower speeds than expected from my Airport Extreme. Brand new 16x4 channel DOCsis3 modem on Time Warner's approved list. 200 Mbps plan, and ...
2
votes
0answers
229 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
0answers
521 views

FreeNAS, OS X Yosemite and automount

I've got FreeNAS 9.3 server (HP Microserver N54L) and connecting to it via NFS from my multiple OS X systems (running OS X Yosemite 10.10.1). I've always had low performance over the network (1Gig ...
2
votes
0answers
108 views

Prevent Open/Save dialog from solliciting external hard drives

I have several external drives, which I don't use constantly, and so they spin down, and rest. Unfortunately for me, every time I have the "Open..." or "Save..." dialogs, Mac OS X spins these hard ...
2
votes
0answers
100 views

What causes playing a video in browser to take up all the RAM?

I've been noticing lately that when I'm playing a video on my Mac from say Hulu, Netflix, Youtube, any video site via a browser, the computer gets extremely laggy for 5 minutes and then acts normal. I'...
2
votes
0answers
336 views

OS X 10.9.2 has slowed down MATLAB

I am using 10.9.2 late 2013 computer to analyze my data, specifically with MATLAB, and generally I have many MATLABs open in parallel, doing some analyses for me. MATLAB, X or Y is completely ...
2
votes
0answers
51 views

Chrome loads very slowly while Safari very fast

Chrome loads any web page very slowly. Even making a google search takes more than 15 seconds while the same occurs in Safari instantaneously. I cleared the cache and disabled NPAPI plugins as ...
2
votes
0answers
502 views

AppleScript to find old mail messages is slow in ScriptEditor

So I have an AppleScript that iterates over all the messages in various mailboxes and finds messages which meet various criteria and moves them to Deleted Items. The mailboxes in question are ...
2
votes
0answers
591 views

How to fix 10.8 internet sharing resulting in poor file sharing performance and no Time Machine server?

TL;DR - File sharing performance is extremely poor on a Mac Pro running 10.8.2 with file sharing enabled. Using it as a Time Machine server also no longer works in this setup. I have been ...
1
vote
0answers
71 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 ...
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 ...
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
0answers
64 views

Wi-Fi speeds very slow on iPhone 5

I have a strange problem with my iPhone 5 running iOS 9.2.1. When I first join my home Wi-Fi network, it is running nice and fast. I use the Speed Test app and measure 60 Mbps down, 4 Mbps up, which ...
1
vote
0answers
42 views

Mid 2012 Mackbook Pro performance problems

I bought an used Macbook Pro Mid 2012 and it has performance issues. Basically it hangs from time to time even when its not under heavy load. I started to inspect the possible causes and I found out ...
1
vote
0answers
34 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 ...
1
vote
0answers
97 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 ...
1
vote
0answers
52 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
0answers
42 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 ...
1
vote
0answers
314 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
vote
0answers
75 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 ...
1
vote
0answers
49 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
393 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?
1
vote
0answers
70 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
0answers
246 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
0answers
403 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 ...
1
vote
0answers
132 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
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 ...
1
vote
0answers
811 views

Extreme slowness after upgrade to Yosemite; is my specific problem happening to others or just for me?

Like many, my Mac (iMac) has become extremely slow when performing certain operations and it's making it nearly impossible to get work done. I've been paying close attention trying to find some ...
1
vote
0answers
152 views

Multicoloured circle of death since Yosemite

I have had my Macbook Pro MacBook Pro (13-inch, Early 2011) 2.3 GHz Intel Core i5 Memory 4 GB 1333 MHz DDR3 for about 3 years now and it has gradually got a bit slower in responding. I have a very ...
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
44 views

Preview scrolling speeds?

When using Preview (on OS X 10.8 & 10.9) I noticed that the scrolling speed is too fast. I often read long documents and want to see in advance what are the chapters coming a few pages later. ...
1
vote
0answers
551 views

Has a Graphics Driver or Something for Intel HD 3000 Been Changed in Mavericks 10.9.3?

So I updated to Mavericks 10.9.3 and didn't really thing anything of it, it just said security updates. After playing a few games and working on my project with OpenGL, I've noticed that performance ...
1
vote
0answers
73 views

Terminal speed up doesn't accept command line arguments from outside source?

From a previous suggestion I changed terminals startup command from default to '/usr/bin/bash' which I created as a link to '/bin/bash' which stops terminal from login in every time I open a tab ...
1
vote
0answers
168 views

Does free disk space actually help mac performance?

Anyone will tell you that freeing disk space will make your mac faster - specially noticeable if your disk is almost full. I don't know if that's true. Is it? And why, exactly? I just don't see how ...
1
vote
0answers
446 views

Show iPhone connection speed

I'd like to know if there is a way to show the current mobile link speed on my iPhone 5s. I mean the "physical" max. of the currently negotiated connection to the cell tower, not the actual throughput,...
1
vote
0answers
166 views

Spring 2010 MBP discrete GPU performace vs current MacBook Air?

I have been using a mid-2010 MacBook Pro with 2.66GHz Intel Core i7 processor, 8 GB RAM, 7200 RPM 512 MB hard drive, and a NVIDIA GeForce GT 330M 512 MB discrete graphics card. After almost four years,...
1
vote
0answers
912 views

How do I remove akamai and speed up my iMac?

I have an iMac (running Leopard) going deadly slow, I discarded any hardware problems (Hardware tests, disk utility, etc..) and the only strange thing I've found is a folder called 'akamai' After ...
1
vote
0answers
125 views

Acceptable and unacceptable speed for an external USB disk

I think my external HDD is running way too slow but I am not sure. Using XBench I get the following results: Seq: Uncached Write 0.79 0.49 MB/sec [4K blocks] Uncached Write 0.21 0.12 MB/sec [...
1
vote
0answers
102 views

MacBook Air is slow after inserted and removed USB audio player

I have a first generation MacBook Air. I plugged in a USB memory stick, which is actually a 2 GB MP3 player but serves as a memory stick as well. Finder never shows the content of the memory stick. ...
1
vote
0answers
46 views

TimeMachine performance issues on OSX Server 10.7.4

we are running OSX Server 10.7.4 on a MAC Pro (Mid 2010). Enabled services are Mail, Calendarserver, Contacts and Websharing. The Server has a Xeon Quad CPU and 32GB of RAM. A timecapsule is ...
1
vote
0answers
301 views

Macbook Pro Late 2011 stuck at 0.8 GHz

I have been experiencing a lot of problems with my Macbook Pro slowing down and crawling through small tasks like getting mail and opening Launchpad. I have 8 GB of 1333 MHz DDR3 memory and a 2.2 GHz ...
1
vote
0answers
156 views

System very slow while and after login

I'm using OS X 10.8.4 on a Mac Mini with 2.3 GHz Core i5 and 8 GB RAM. For security reason I have to lock my computer to screensaver while I leave my seat for a while. I set it up so that password ...
1
vote
0answers
409 views

Why are disk images on AFP shares being disconnected?

I have a FreeNAS File Server which provides AFP shares to my Mac OS X clients. I'm seeing some strange performance issues between OS X 10.7.5 clients and the FreeNAS server. My goal is to use the ...
1
vote
0answers
195 views

Is 3G-less iPad considerably faster on wifi than iPad 3G?

I've just experimented with three 3G-less iPads and they all were much faster than this one iPad 3G that just never goes through my 128mb download, all over the same wifi. They're also all 16gb, if ...