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

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5
votes
1answer
9k views

How to identify CPU and memory usage per process on iPhone?

There are many common apps available to show total system RAM usage and free. However, my understanding is only a jailbroken phone has access to the APIs to access PER PROCESS memory usage on iOS. ...
6
votes
3answers
10k views

Are the Retina MacBook Pro 15" suitable for PC (Windows) gaming?

I want to buy a MacBook Pro Retina 15" and install Windows 7 or 8 (boot camp) to play games. Obviously games aren't ready for this 2880x1800 resolution, so I hope I can set the games to run at ...
1
vote
1answer
368 views

Does Mac OS X load average reporting (via top) include processes waiting on IO?

I'm looking at the output of top to view my system's load average. I want to understand whether the load average is reporting processes just waiting for CPU, or whether it's reporting processes that ...
5
votes
1answer
302 views

How to isolate the most disk-active process(es) in OS X?

I have some process(es) performing a lot of drive access from time to time, however I've hitherto been unable to isolate which process or processes are performing the access. What shell command can I ...
2
votes
2answers
385 views

How can I reproduce the Finder sort order without asking Finder to sort for me?

I work with a large collection of mostly-text files subdivided by series, periodically mirroring them from an upstream repository and repackaging them using a shell script from a slightly chaotic ...
0
votes
1answer
581 views

Can CPU Speed Stepping be prevented?

A while ago, I asked a question regarding the reason behind my computer slowing when it had ~5% battery or less. I was told that it was either CPU speed stepping or the Macbook Pro automatically ...
5
votes
1answer
7k views

How can I control (start/stop) applications and services that start up after reboot?

I have a Mac that is slow when using the internet, but other PCs on the same connection aren't as slow. I suspect there are too many AV scanners running concurrently, or there is some process that ...
0
votes
0answers
55 views

Is there a way to monitor the stack of execution in order to find the longest hangs?

Related to this unsolved mystery: apple.stackexchange.com/questions/62416/why-do-i-get-serious-execution-lag-on-clicks-application-switching-and-general I'm wondering if there's a way to see which ...
2
votes
1answer
3k views

Mountain Lion boot time extremely slow!

After I upgraded to Mountain Lion my MBP (late 2008) started to boot extremely slow. Last time it took 2 hours 46 minutes to boot, now it's already booting for 40 minutes. I've tried cmd+r (just ...
9
votes
3answers
14k views

Can the iPad / iPad 2 handle iOS 6?

I've heard anecdotal evidence of iOS 6 seriously impairing the performance of the iPhone 4 (and had a poor personal experience with it on iOS 5). I was wondering if anyone has had any problems ...
4
votes
1answer
333 views

How To Record CPU and Memory Usage Data

I want to profile the execution of a program to see what in particular is slowing it down - whether it hits a memory cap or if my CPU is not powerful enough. Activity Monitor (the one that comes with ...
1
vote
1answer
216 views

Error while Compressing the Mail DB: file is encrypted or is not a database

I am trying to compress the Mail database by running the sqlite3 vacuum command. But I get the following error: SQL Error: file is encrypted or is not a database I was running Mac OS 10.6 and I ...
5
votes
1answer
3k views

Are there performance (slowness) issues with iOS 6 running on iPhone 3GS?

My brother has an iPhone 3GS. The upgrade to iOS 5 has considerably slowed the device. Will the upgrade to iOS 6 slow the device even more? Will iOS 6 work well (not any different from iOS 5) on an ...
5
votes
4answers
1k views

Are there general or specific iOS6 performance issues on iPhone 4?

I would like to upgrade my iPhone 4 to iOS6 but I'm wondering if I will get performance loss (as when I upgraded my iPhone 3G to iOS4 : terrible). Can someone confirm that it won't affect my day to ...
1
vote
1answer
8k views

How to run a performance benchmark on my MacBook Pro?

I need to run some sort of performance benchmark to measure how slow my MacBook Pro is (and why)—a 15" MacBook Pro (late 2008) with a 2.4 GHz Intel Core 2 Duo processor, 4 GB of DDR3 memory, and ...
4
votes
2answers
2k 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 ...
2
votes
1answer
344 views

How can I disable CPU throttling on Late 2006 MacBook with no battery?

The problem I am experiencing is that if the battery is not present, the CPU is automatically throttled. I have done some searching and have found that this is apparently by design, "in case the ...
1
vote
1answer
167 views

Move Large, Frequent files closer to center of HDD

Is there a native/third-party utility (or native trick) to move large, frequently-used files closer to the center of the disk? I was under the impression that the OS tried to automatically optimize ...
2
votes
1answer
290 views

Will FileVault reduce the power of my hybrid SSD+HDD?

I have a MacBook with a Momentus XT hybrid SSD+HDD drive. It have a 500GB HDD plus 4GB SSD which, as I could check, it uses as a cache for read operations. It uses some kind of black magic to ...
2
votes
1answer
597 views

Why do I get serious execution lag on clicks, application switching and general usage

I have an MBP 8.1, early 2011, 13 inch, Mountain Lion. Whenever I leave it on for more than a couple hours, I get serious execution lag on every command. For example: I click something (a link, ...
0
votes
0answers
71 views

Apple iPad - intermittently crashing

I've inherited a 1st generation iPad. It seems to work fine, except for the reason I inherited it, which is that every so often, whichever app is running will simply close for no discernible reason. ...
2
votes
1answer
300 views

How does Apple achieve such an ultra fast boot up?

I'm a recent Mac user (MBP) and the booting time really surprises me. Within few seconds, from complete power down, the OS prompts you to log in, then the rest just flies! And even faster recovery ...
2
votes
1answer
2k 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" ...
3
votes
2answers
2k views

How to disable any and all eye-candy features on Mac OS X 10.6.8?

I'm going to install Linux Mint virtual machine and work primarily through there. I want to shut off any and all eye candy on Mac to squeeze out every last bit of performance I can. Akin to "Set for ...
0
votes
2answers
1k views

Which Time Machine backup destination over Wi-Fi to choose: old computer running Ubuntu or Time Capsule?

Here is my situation. I live in a shared house where there is already a wireless router that other people use. I have a Macbook Air that has 128GB of hard drive. I want to use Time Machine for ...
18
votes
12answers
45k views

Will Mountain Lion make an older computer run faster or slower?

Performance/responsiveness is a common concern with new software, especially on older machines. In general, upgrading from Snow Leopard (10.6) to Lion (10.7) wasn't too bad, but now Mountain Lion ...
0
votes
1answer
1k views

Can imagent in OS X Mountain Lion be made to consume fewer resources?

imagent is constantly consuming CPU cycles and a couple of GBs of "real memory" on my wife's MacBook Air since upgrading to OS X Mountain Lion. I believe this is part of the Messages app. Is there ...
-3
votes
3answers
2k views

Can a reduced number of processes lead to improved performance with OS X 10.8?

I updated to OS X 10.8 and my process count went from about 75 under Mac OS X 10.7.4(?) to 96. What can I do to fix this? I use my Mac (MacBook Pro, Mid 2010, 2.8 Ghz Core i7, 8GB RAM, 256 GB SSD) ...
1
vote
1answer
544 views

Is there anything like NVELO Dataplex (hybrid SSD/HDD software) for OS X?

I'm interested in upgrading my old MacBook to using an SSD and moving the data drive to where the DVD drive is using an optibay. Often SSDs come with a licence for NVELO Dataplex software (which is ...
0
votes
1answer
580 views

Will SSD improve iPhoto and Aperture responsiveness?

I have a late 2008 Macbook with Core 2 Duo and plenty of RAM and HD space. (8GB of RAM, max for my machine) Every time I do some work in iPhoto and Aperture, my CPU usage goes up to around 60-80% ...
7
votes
3answers
5k views

How can I speed up SD card writing speed (using /dev/disk*) on a MacBook Pro?

I've been installing some linux distributions onto an SD card from my MacBook, although they take over an hour to transfer a few hundred MB (using dd and /dev/disk1). If you look at the above ...
5
votes
2answers
10k 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 ...
1
vote
2answers
2k views

Can I improve network speed with VirtualBox between host and guest?

I use a VirtualBox machine with Arch Linux as development web server. I want to improve rsync transfer speed via smb://. What kind of configuration is best to improve file transfer/synchronization? ...
0
votes
1answer
450 views

Why does running Luxology Modo cause a marked increase in performance for other 3D graphics apps?

Original post is at the bottom, newest update at the top. ;) I didn't think to add this before, but you can download a 15-day trial of Modo for free if anyone want to try this for themselves. If ...
0
votes
1answer
173 views

iTunes can only perform one task at a time

Ever since updating to the latest version of iTunes on my dual core mac mini, iTunes can only perform one task at a time beach balling the entire time. For example if it is downloading a podcast, and ...
1
vote
0answers
76 views

Emulating lower speed CPUs on Mac mini

I would like to ask whether it is possible to develop OS X application (especially for Lion) on a Mac mini, being able to test how the performance would be on a lower speed CPU. For example: ...
7
votes
3answers
19k views

Functionally speaking, where will I see a difference between dual- and quad-core i7s?

I am ready to buy a new MacBook Pro. I am drawn to the portability of the 13" and the better specs of the 15". If you take money out of the picture I would really like to know where I would see the ...
0
votes
1answer
125 views

How to set up Loki Render on Mac OS X Lion

I am trying to do network rendering in Blender3D using Loki Render across my 3 Xserves. I have no experience in setting up network rendering and the instructions that are given on the Loki Render home ...
2
votes
1answer
480 views

Mac OS X disk performance monitoring

Which tools to use for detailed performance analysis of disk access? per disk per process queues latency data volume/throughput errors characterisation (read Vs write, burst, etc.) Tried iostat, ...
0
votes
1answer
424 views

Macbook Pro just started overheating and losing frame rate

It's strange because I've had Diablo III for a couple weeks now and I've been able to play it just fine without any performance problems. Starting today though, I've experienced some serious ...
2
votes
2answers
126 views

Safari “Find” is slow

Safari is fast at everything, except "Find". When I hit command-F, I get the beachball for 5 to 25 seconds (and then the Find bar appears as normal and everything's good again). I have plenty of ...
1
vote
0answers
189 views

Guide on removing unused Agents and Daemons to speed up MacOS

Can you point me to a good guide on spotting and getting rid of running Agents, Daemons and Processes that aren't useful to me anyway and are taking up memory and CPU cycles?
1
vote
6answers
2k views

Replacing hard disk with SSD or increasing RAM in MacBook Pro

I am using MacBook Pro for the last 1.5 years. Here is my configuration. 13" MacBook Pro, min-2010 2.4 GHz Core 2 Duo 4 GB RAM OS X Lion 10.7.4 Would you recommend upgrading to SSD for fast ...
0
votes
4answers
394 views

Does the performance increases when the memory increases in Apple products?

I am planning to buy an iPad 3. My choices are, iPad 3 - 32GB with wifi iPad 3 - 16GB with wifi + 4G I'm so confused to select my best choice. Actually the problem is, some of my friends telling ...
8
votes
5answers
7k views

Alternative activity monitors for OS X?

I’m a bit intrigued by the new detailed activity monitors and progress indicators in Windows 8 (copying files, the task monitor, network activity, etc.) It got me thinking: surely there must be some ...
1
vote
1answer
271 views

What is the performance bottleneck when launching large applications on OS X?

I have an Early 2011 13" Macbook Pro (i5 2.3Ghz). I've upgraded it to have 8GB 1333 ram and an OCZ Vertex II (120GB) SSD. There are a couple of heavy lifting apps on my mac that take roughly around ...
1
vote
1answer
1k views

How to speed up an iPad 2?

My iPad 2 (32gb) is about one year old and he is getting very slow. I've tried restarting the iPad and quitting all apps but with no real success. There is about 5 GB of free storage space. Any ...
2
votes
0answers
723 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 ...
3
votes
2answers
3k views

Process “ubd” high CPU usage

I noticed my MBP got really slow, which must be strange with SSD and 8GB of RAM. So I opened the Activity Monitor to discover a process called ubd keeps its CPU usage very high, about 120% most of ...
2
votes
1answer
396 views

MacBook Pro battery and speed issues

My sister's MacBook Pro often shuts down at ~20% battery. It won't turn on again until it has been plugged in for about 10 minutes.