Questions tagged [performance]

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

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apfs speed of mac mini m1 256GB?

I have the M1 mac mini with a 256GB ssd. It is not a fresh disk---I now have only about 30GB remaining. I am not interested in synthetic raw disk performance, but in performance on the APFS file ...
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MacbookPro14,2 Gigabit internet Speed. Is it possible?

I have MacbookPro14,2, and following is the internal ethernet spec. I was wondering if its possible to use external gigabit ethernet (found on USBc dock), and have gigabit internet. I have a gigabit ...
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3 votes
1 answer
649 views

Why a new M1 brand new Mac takes so long to start after login?

I have no application starting or loading anything when the mac starts. I start my mac, see the login window, type my password and after that it takes a long time to login. I guess 2 to 4 minutes to ...
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2 votes
1 answer
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What is going on with WindowServer?

I know WindowServer manages all the windows on my system. I know that's going to scale with multiple monitors, etc. At times though... it seems it's working a lot harder than it should if it's just ...
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My apple internal SSD has become extremely slow

I have a 2017 13" MacBook Pro with a Apple 500gb SSD, model APPLE SSD AP0512J. I have noticed over the last year that my machine has become more and more frustrating to use - everything just ...
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2 votes
1 answer
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How do I solve the Magic Trackpad 2 lagging on macOS Monterey?

The past week I upgraded from macOS 11 Big Sur to macOS 12.3 Monterey. My Magic Trackpad 2, which connects via Bluetooth, lags. If I simply move my finger, it takes a short time before the mouse ...
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76 views

How can I see whether or not my M1 Macbook is memory constrained or not?

My Macbook M1 is experiencing severe performance issues at times, but I have hard time finding any hard data that shows what the issue is. htop shows lots of free memory and cpu, yet it seems as if ...
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4 votes
1 answer
460 views

Mac Mini's fan is not speeding up when it's under pressure

I have a Mac Mini 2020 with M1 chip. Fan is always working around 1700 rpm no matter the CPU temperature. Even if CPU temperature is 80 degree celsius, it works at the same speed as if it was only ...
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How to monitor hard disk busy time?

I want to monitor hard disk busy time (as a percentage) to find out when the disk is causing a bottleneck in my workflow. On linux / BSD this can be done with iostat -x to see extended statistics ...
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  • 2,591
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70 views

Activity monitor style way to see Neural Engine load?

The question is all in the title. Here is the background. I am using an M1 mini with 8 GB of RAM, which is barely functional when I have voice control switched on, due to memory usage frequently going ...
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-2 votes
2 answers
48 views

Is the M1 chip on the 2021 24" iMac the same as the M1 chip on the 2020 Macbook Air?

My workplace is offering me a choice of either a 24" iMac (2021) with 8GB RAM and 256GB SSD, or a Macbook Air (2020) with twice as much RAM and storage. Both have, as far as I can tell, the same ...
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Is there a way to enable integrated graphics on a MacOS Virtualbox guest? MacBook Pro host

I have been trying to run OS X El Capitan in Virtual Box. The host is a MacBook Pro running macOS Monterey (12.2.1): (cannot post images for some reason, but this is the About My Mac info on my host ...
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Why does uptime report load averages over 1.35 even when the system is idle and not running any apps almost 24 hours after boot?

I have a Mac Mini (2014 model, 4GB RAM, 500GB storage) I use mostly for testing cross-platform software I'm working on. It's never been particularly fast but immediately after the latest upgrade from ...
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-1 votes
1 answer
211 views

Eliminating all apple telemetry

Using Lulu, and turning off the "allow apple processes" option, You can see that apple makes hundreds of connections to the internet for a variety of reasons. I did an experiment: I blocked ...
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Apple Music app resets playback speed after pausing

I have playlist in Music app, but pausing and resuming always resets playback speed. Is it possible to write AppleScript for Music app to not reset playback speed?
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2 answers
86 views

16GB M1 Mac running slow after couple days of usage

After a fresh restart, everything is smooth. During the next couple of days of regular usage of the system, a problem of responsiveness gradually increases, until you can count a full second between ...
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2 answers
56 views

Is there an auto nice daemon for MacOS?

I'm wondering if there is something similar to auto nice daemon like 'ananicy' or 'and' on MacOS. Maybe there is some standard daemon that is already running and doing a similar job? Sometimes my ...
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1 vote
1 answer
126 views

What would throttle Ethernet speed on a Mac?

I am using a Mac mini for playing media from a local network media server connected by cable (Ethernet). This Mac stays on 24/7 and is prohibited from accessing the Internet (router firewall). ...
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0 votes
1 answer
132 views

Install macOS Monterey on older/ slower iMac, good for performance?

I have an "old" late 2015 iMac 21,5" that I want to use for photography in the studio (for quality control). But even when it was new it wasn't the fastest because of the slow CPU and ...
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0 answers
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Screen share/Apple Remote Desktop/other severely slows down the Mac Pro (3,1) being shared

All I wanna do is run a headless Mac Pro(3,1, with DosDudes patch for Mojave). The instant I connect, mouse/keyboard latency becomes intolerably slow, on the Mac Pro itself, whether I'm looking at it ...
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My Mac Storage Documents Section taking too much space even though file size not add up [duplicate]

I have MacBook Pro (Retina, 15-inch, Mid 2015) Storage: 256GB The problem is, in the Documents section it's taking approx 81 GB size, even though I have calculated all the documents file sizes that do ...
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-2 votes
1 answer
684 views

Why is exFAT so slow on Mac? (reloaded)

I have read questions here about exFat and its performance on the Mac. I think I can refute the previous answers and am therefore still looking for an answer or solution. But from the beginning: My ...
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1 answer
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USB hub speed vs actual transfer speed

I've been looking through the specs of my 2014 MacBook Air in order to resolve a certain issue. The hub speed cought my attention: BRCM20702 Hub: Product ID: 0x4500 Vendor ID: 0x0a5c (...
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1 vote
1 answer
203 views

High kernel_task CPU usage problem

I have an old MacBook Air 13" from 2013. It has been working flawlessly up to maybe 6 months ago, where it started being insanely slow. I have identified the cause to be the dreaded kernel_task, ...
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1 vote
1 answer
272 views

macOS showing extremely high virtual memory usage for every process (in htop and top)

I am not even 100% sure if this is an issue, because htop on macOS is known to show very high virtual memory usage. However, I never noticed VIRT values that were so consistently high before, and I ...
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0 votes
1 answer
26 views

Are there any performance differences in OS X apps based on location of install?

are there any differences from a performance perspective (not access control) when a OS X application is installed(stored) in /Applications dir in the local domain vs /Users/<username>/...
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1 vote
1 answer
50 views

Why do Apple laptops have very strong performance regardless of whether it is plugged in or not?

Gaming laptops throttle a heck ton when on battery while MacBooks don't. Why is that?
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0 votes
1 answer
139 views

Macbook Pro suddenly slows down with high CPU load

After a sudden power cut, my Macbook Pro became so slow and laggy with high CPU load. The CPU load is very high on startup and whenever I open an app. Even a small app like Notes also causes more ...
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7 votes
1 answer
326 views

How to force a Terminal Command to run with the Performance Cores on Apple Silicon?

I recently had to reinstall the developer tools using xcode-select —install, but noticed that the install was completed with my efficiency cores rather than my performance cores. I know this because ...
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0 answers
11 views

Does MacBook Air 2012 WiFi support two spatial streams?

The MacBook Air 2012 (13") has support for 802.11n 5 GHz, but I have never observed a Tx speed greater than 150 Mbps, which is attainable with a single spatial stream. Does it support two streams ...
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1 vote
0 answers
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2010 Macbook Air Throttling when battery half empty

For some reason, my Macbook Air is throttling and not running at full performance when the battery level is under 40 ish percent. I have iStats Menu and it seems like the CPU is peaking around 140 ...
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238 views

Thermal throttling on purpose on M1 MacBook Air

I have been trying to game on the Macbook Air and for the games that I play I'm quite satisfied with the performance. Although, I noticed that even for non-demanding games, the CPU can run hot up to ...
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0 votes
0 answers
87 views

high fan speed even w/o SSD on MacBookPro9,2 (mid-2012) MD101LL/A

It is important that I give a detailed description of the event MacBook model MacBookPro9,2 (mid-2012), MD101LL/A, Core i5, 16G RAM, SSD 500GB, bought in 2014 Used up to a week before the disaster, ...
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0 votes
0 answers
21 views

Why do I need to unplug my Ethernet cable or restart network service to renegotiate connection speed? [duplicate]

Rather frequently, my iMac with a 1Gb ethernet drops to 100Mb/s connection speed. I can unplug the cable, plug back in a second later, and the speed restores to 1000Mb/s. I recently discovered that ...
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3 votes
3 answers
4k views

Memory bandwidth (200GB/s vs 400GB/s) on a M1X Macbook Pro: usage scenarios where it makes difference?

I'm struggling to choose between M1max and M1pro for my MacBook 2021. The only difference that could be relevant for me is 2x memory bandwidth. Are there any real-world usage scenarios where 200GB/s ...
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1 vote
0 answers
40 views

What are the performance implications of unified (vs non unified) memory? [duplicate]

When seeing the term "unified memory" in the new MacBook Pro copy1, I cannot determine what impact it will have on day to day use of the device, save for an educated guess that it will make ...
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  • 2,967
0 votes
1 answer
36 views

Why is a mac typically slow/laggy after upgrading the OS? [closed]

I recently updated macOS to a new major version (Big Sur). I've read many claims that a newly upgraded macOS installation may be slow/laggy for 1–7 days because it needs to perform "various ...
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  • 584
0 votes
2 answers
98 views

Performance has been decreased significantly after connecting via HDMI (M1)

Currently, I have some sort of performance issue with my MacBook Pro late 2020 (M1, 256, 8). I inserted not the original (very cheap) multiport adapter into the machine and connected it via an HDMI ...
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0 votes
0 answers
56 views

Why does doing math in spotlight use extreme high amounts of CPU + memory?

I often use Spotlight as a easy access calculator but recently I noticed that doing so consumes an EXTREMELY large amount of CPU and memory, as seen in the spotlight process corespotlightd. Basically ...
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1 vote
0 answers
55 views

What can cause an application to behave differently when started as bundle vs. executable? [duplicate]

I have a C++ application that is built as a bundle (.app) for macOS, using clang (from Xcode) and CMake. This application behaves differently when double-clicked in the Finder, as when started ...
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4 votes
1 answer
125 views

Can I slow down my iPhones network connection while testing an app?

I'm trying to test an iPhone app that needs to be usable in low-bandwidth / poor signal areas. I know I can slow the network on my Mac and the simulator in Xcode, but not how to slow iOS and iPadOS ...
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0 votes
0 answers
384 views

msd_stores consuming twice the amount of memory than I have available on my mac

There's only 16Gb of RAM on this computer (quad-core 15" Macbook Pro) but Activity Monitor is saying mds_store is using 32Gb. Rendering in Sublime and Brave browser when I scroll and type was ...
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1 vote
2 answers
303 views

Mac mini fan never surpasses 7%, even while stress testing

I have a 2014 Mac mini with an Intel Core i5 processor. I noticed that no matter how much I used it, the fans barely ramped up. Using iStat Menus I noticed that it would usually stay around its base ...
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  • 7,425
2 votes
1 answer
128 views

Limit entire system's CPU usage

I want to limit the entire macOS system's CPU usage. I don't mind if it slows down, but I just want to compromise some speed for temperature. I searched for any programs that does this. The one that ...
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0 votes
1 answer
202 views

Thermal throttling after Big Sur update

My 2015 i7 MacBookPro started to thermal throttle after the update to Big Sur: in previous system, the Mac went up to 90°C degrees before slowing down. And it would not thermal throttle at all. The ...
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1 vote
0 answers
55 views

Roughly how quickly will a fairly new MacBook Air's battery drain when powered off for several weeks?~0.5% per day? 1%?

I have a relatively new MacBook Air (Retina, 13-inch, 2020) just under 1 year old with only 66 cycles reported on the battery. Question: If I have to1 leave it for several weeks powered-off and ...
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0 votes
0 answers
31 views

Big Sur access to internal SSD disk very very slow

I have a 15" MacBook Pro from 2017. I recently upgraded it to Big Sur and now, after a few weeks, I noticed that my go command is very very slow. For Go to have case-sensitive filesystem access, ...
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0 votes
0 answers
379 views

MacBook Pro 16 inch thermal throttling even when temperatures are low

Sometimes when I start to use MacBook its cpu speed limit stays at 20% despite the low temperature. I use the app "HOT" to monitor it. Sometimes even when temperature is 60 Celsius cpu ...
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3 votes
0 answers
475 views

MBP 16 becomes slow after a while when connected to external monitor

I've noticed recently that my 2019 MBP 16' (running latest version of Big Sur) becomes very slow and sluggish after being connected to an external monitor for a certain amount of time (the time varies,...
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26 votes
6 answers
3k views

Are there credible technical bases for reports of “Apple deliberately slows down older devices when new software is released”?

Today while I was choosing an iPhone to buy, a clerk said that choosing iphone 7 would be unwise, as it's old and in few years it will stop receiving updates. At first I thought "so what, device'...
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