Questions tagged [performance]

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

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How to change MacBook's performance back to normal after it was reduced?

Sometimes my MacBook shows a "Performance is reduced" notification after it gets hot from running intensive apps on a hot summer day. When it's left idle for about 30 minutes and becomes cooler, is ...
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1answer
388 views

Can Turbo Booster (3rd Party Application) damage your CPU?

I have turbo booster installed on my old macbook pro which I currently use to handle files between my iMac Pro and the macbook. The macbook has a base clock of 1.4 Ghz turbo boost upto 2.3 Ghz. On ...
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3answers
24 views

Determine which app is opening too many files

Sometimes my Mac starts behaving weirdly, a typical symptom being that I can't open certain apps that were working just fine recently. This just happened and I traced this issue to an excess of open ...
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2answers
43 views

Could I take a Core i7 form a 2012 MBP and put it into a 2018 MBP?

I know very little about computer hardware so I thought I might as well ask. I have an Intel Core i7 in my MacBook Pro Late 2012. I am considering getting a 2018 MacBook Pro. I was wondering if it is ...
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1answer
63 views

Poor WiFi Performance on iPhone

When migrating to a new router I remarked my iPhone (7Plus) had lousy TX performance compared to the other 80211.ac Apple devices connected to the same wireless SSID as revealed in below screenshot: ...
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3answers
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What are my hardware upgrade options for a late 2009 iMac?

It is now July 2019 and I have this Late-2009 iMac. macOS High Sierra Version 10.13.6 iMac (27-inch, Late 2009) Processor: 3.06 GHz Intel Core 2 Duo Memory: 4 GB 1067 MHz DDR3 Graphics: ATI Radeon HD ...
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0answers
26 views

How can I fix poor Java performance caused by Mojave update 10.14.6?

I installed the 10.14.6 macOS update yesterday, and now Java is performing very poorly. This is especially noticeable when using Maven to build Java applications. There are projects I build ...
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1answer
54 views

Very slow write performance 30min+ for 2GB - APFS?

Yesterday I have been working with Docker on my MacBook Pro 2012 which runs Mojave and the internal drive has been automatically converted to APFS (seems to be so for startvolumes since Mojave). It ...
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10answers
38k views

Can I manually limit the %CPU used by a process?

I would like to limit the amount of CPU time dedicated to certain processes (e.g. Firefox, Safari, ...). I can't understand why such programs, even when not used (nothing loading, no animations, ...
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3answers
762 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 ...
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1answer
102 views

Should I be worried if the newest Macbook Pro specs are lower than my older Macbook Pro spec?

I just went to Apple's website (July 2019) to find the maximum processor spec of a 15-inch Macbook Pro to be: 2.4GHz 8‑core 9th‑generation Intel Core i9 processor, Turbo Boost up to 5.0GHz However, ...
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1answer
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Limit mac CPU frequency without disabling Turbo Boost?

Intel mobile CPUs now have a really low base frequency and a high Turbo Boost freq, e.g. i5 2.4~4.1 GHz. Turbo at 3.8+ makes it go all the way up to 100°C. Using 'Turbo Boost Switcher' to disable TB ...
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2answers
34k views

Monitor GPU performance on OSX

Is there an application or tool that can monitor GPU performance on OS X? Specifically I would like to see the current speed/utilization and temperature of the integrated NVIDIA chip. For Windows, ...
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5answers
18k views

Why is kernel_task using so much CPU?

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 ...
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2answers
4k views

com.apple.hiservices-xpcservice results in frequent hangs and freezes in my mac

Update (2019): The issue still persits even in macOS Mojave, tried everything I could find, nothing seems to solve the issue as of yet! Problem: com.apple.hiservices-xpcservice hangs repeatedly ever ...
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3answers
1k views

With a data transfer of 50 GB estimated 5 hours, are USB-C claimed speeds inaccurate or to blame?

When I bought an 2017 MBP I was under the impression (from Apple and others) that USB-C was the superfast way to transfer data. It has not worked out that way and I am wondering if I misunderstood ...
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1answer
4k views

Poor performance with Virtual Box on MacBook Pro 2017

I am running Ubuntu 16.04 via Virtual Box on my MacBook Pro 2017 w/ TouchBar (3.3Ghz i7, 16 GB 2133 MHZ) and I am getting a very laggy and unpleasant experience on the machine. I have gone through the ...
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1answer
101 views

2.7GHz Intel Core i7 vs 2.6GHz 6‑core 9th‑gen Intel Core i7 [closed]

I have a 15" 2016 2.7GHz Intel Core i7 MacBook Pro. It has 16GB 2133 MHz LPDDR3 and a 1TB SSD. I'm considering upgrading to the latest MacBook Pro, which has: 2.6GHz 6‑core 9th‑gen Intel Core i7 ...
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1answer
25 views

iPad: Battery usage while using split screen vs single app in foreground

What’s the difference in battery usage for the two situations while running apps on an iPad? Split screen with app X and Y. Only app X or Y in foreground. Since screen usage is same for both, only ...
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0answers
9 views

Can the 2019 MBP 13'' i7 16gb support a (flawlessly) 1440p 165hz monitor? [duplicate]

I have a 2019 MBP 13'' with i7 quad 8th and 16gb ram, and I am considering buying a 1440p 165hz Dell to pair with it. This has a displayport port only. I am looking for flawless performance, no ...
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4answers
5k views

How can I figure out which tab in Safari is using CPU?

I usually have several tabs open in Safari in the background, and sometimes I see it taking up an unusual amount of CPU (PluginProcess or WebProcess). How can I figure out which tab (or tabs) is ...
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1answer
749 views

CPU throttled to 0.8GHz due to “GPU LIMIT PROCHOT”

Suddenly my iMac (late 2013) started to throttle CPU to 0.80GHz, everything becomes super sluggish. It happens ~5-10 min after a fresh reboot, sometimes it goes back to full speed for short periods, ...
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2answers
21k 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 ...
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1answer
35 views

What could be the cause? I/O completely died. Constant spinning, even logging in takes forever

iMac 5K, late 2014 model. The weirdest thing happened yesterday. This machine is usually very performant — 8GB ram, 3TB Fusion drive. I dual-boot Windows on it using Boot Camp. As of now, I still ...
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0answers
26 views

How to optimize Mojave for inside a VM?

This may sound like possible duplicate, however it's not. The focus of the question is very specific to OS version macOS Mojave 10.14, with a very specific goal in mind explained below. The host OS ...
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0answers
50 views

2018 MBP Network Throughput decreases over time [duplicate]

Summary I was recently provided with a 2018 MBP by my employer. The network throughput slows gradually until I'm forced to reboot. Setup The following machines are connected via wired ethernet to a ...
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2answers
199 views

Does running both (XCode & Android Studio) at the same time overload my MacBook Air with only 8 GB of Ram

This IDE is for the Automation Testing Purpose. Along with Appium Server, I need to run the Emulator of Xcode's iOS Emulator and the Android Studio's Emulator. Does this Run smoothly in the 8GB RAM ...
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0answers
26 views

CPU frequency very low during high disk I/O and more aggressive fan policy

model: MacBook Pro 15-inch 2018 macOS: Mojave 10.14.5 CPU: Intel i7-8850H Recently, I've observed a significant slow-down of the macOS during high disk I/O. Sometimes the CPU frequency would be ...
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1answer
427 views

How to improve the performance of a Ubuntu Virtual Machine running in VirtualBox?

I'm using VirtualBox 6.0.4 to run a Ubuntu 18.0.4 guest on a MacBook Pro 2018 host with macOS Mojave. The MacBook host has an i7 processor and 16GB of RAM. In addition to VirtualBox, I'm running ...
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2answers
144 views

iMac 27" 2017 memory upgrade question

I have 16GB of RAM installed on my iMac 27" 5K i7 2017 (2 x 8GB). There are 4 slots in total and I would like to add another 16GB. I don't know if it's best to buy 2 x 8GB or 1 x 16GB?
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1answer
137 views

Do the MacBook Pro (15-inch, 2018) have different cooling systems depending on the GPU

I read here that the thermal throttling of the i7 and i9 on the latest MBP (2018, 15-inch) can be significant. I also got information that the cooling system is different when the MBP is upgraded ...
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1answer
309 views

Will upgrading to a 32 GB RAM Macbook Pro significantly speed up Adobe Illustrator?

I use Illustrator to create large, detailed pattern designs. The .AI file size of one of these designs typically exceeds 500MB. When I’m working on a large file like this, Illustrator performance is ...
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1answer
96 views

Does APFS reduce the needed free space on SSD's?

I've seen recommendations for the minimum amount of free space one should have on an SSD that range from 20%—33%. For instance, this answer (Can MacBook Pro get slower after SSD is almost full?) ...
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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 ...
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1answer
234 views

How to decide which is the better browser for me: Google Chrome or Safari? [closed]

Consider that it is often said that... Safari is more battery/CPU efficient. Most people will never run across a web site that runs better on Chrome than on Safari (excluding Google explicit sites). ...
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2answers
155 views

How to limit kernel_tasks CPU usage?

I would like to limit kernel_task's CPU usage on my computer. I provided cooling for my MacBook Pro, cleaned out the internals, and tried resetting the SMC multiple times. I haven't tried re-...
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0answers
24 views

macOS Server VPN (L2TP) speeds choking on Mac Pro, but not Macbook Pro

I have a MacOS Server (10.12.6) set up running a VPN server at one location (site A). I have a Mac Pro (10.12.6) and Macbook Pro (10.14.5 beta 3) running at a second location (site B). Both sites have ...
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8answers
109k 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 ...
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1answer
34 views

Can I check if the cooling system of my Macbook Pro 15" Early 2013 works as intended?

I have this model: MacBook Pro "Core i7" 2.7 15" Early 2013 2.7 GHz Core i7 (I7-3740QM) Intro. February 13, 2013 Disc. October 22, 2013 Order ME665LL/A Model A1398 (EMC 2673) Recently ...
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1answer
49 views

Generate and view macOS system performance report

I want to generate a system performance report for my Mac. I would like that this report have CPU, Memory, disk and network activity statistics over a time period. Like, I start the report generation ...
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1answer
61 views

cpu clock too low / force cpu clock / overclock

I have a MacBook from a few years back. When I use it write some code and browse the internet, the fans go very fast and the noise is horrible. But the temp shows only 70 C. So I used SMC to force ...
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2answers
2k views

MacBook Pro with shot battery, possible to prevent CPU throttling?

I have a late-2013 MacBook Pro 15" which still has the original battery. It's at 1,144 charging cycles, and a few days ago the battery health was at about 50%, though since then it plunged to 4%. The ...
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1answer
183 views

Which model has better CPU-performance: iMac MMQA2HN/A or Mac mini MRTR2HN/A?

In this comparison the main difference I see is in the processors. https://www.apple.com/in/mac/compare/results/?product1=imac-21&product2=mac-mini Irrespective of other feature differences this ...
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1answer
2k views

Transfer speed of USB-C to Lightning on latest iPad Pro 10.5

Has anyone experience or estimates on what transfer speeds are to expect when transferring data to/from the latest gen. iPad Pro 10.5 using a USB-C to lightning cable? Scenarios might be creating an ...
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1answer
34 views

My mac is starting slow. I know login items, CleanMyMac. What else?

My MAC has a slow start-up time (at times, 5s or more before initial black screen with Apple logo). I am aware of login items. I have used CleanMyMac. Is there anything else I should check for? Thank ...
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1answer
2k views

Why are my guests in VirtualBox so slow?

I have Mojave 10.14.3, running VirtualBox 6.0.4 and with Debian 9 (with XFCE) as the guest OS. I have installed the guest additions, no errors. I can verify that the usual vbox modules are running: ...
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1answer
4k 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, ...
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3answers
6k views

How can I have 1805 threads when I only have 4 virtual CPUs?

I was wondering if someone could explain to me how in my Activity Monitor it says that I currently have 1805 threads But I only have 4 virtual cores on my computer (which means that I should only be ...
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2answers
96 views

Slow initial app window opening, but only in certain situations?

I use some apps that can accept files a few ways: open and then use its own file select dialog "open with" from Finder "drag & drop" from Finder Method 1 is fine and the app responds as expected....
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2answers
122 views

What are the ways in which installed software can negatively impact OSX speed over time?

Applications installed on macOS are not always completely self-contained. Sometimes they write files in multiple locations outside their .app bundle, taking up space that they sometimes occupy even ...