Questions tagged [performance]

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

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22 views

How to tell what Safari tab requires high performance GPU?

I'm experiencing lower than expected battery life on my 2015 Macbook Pro. I believe that part of the problem is that the High Performance GPU is being activated when not needed by some tab in Safari: ...
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macOS on external monitor slows down after few days

This one is a long one, but I want to make sure the situation is clear :) I have MacBook Pro (15-inch, 2019, Intel Core i7 6 cores 2.7GHz with Radeon Pro 555X 4 GB and 16GB RAM) connected via ...
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1answer
43 views

What exactly happened with Apple throttling iPhones? [closed]

I'm doing a business report on Apple Inc. and I'm on the legal issues section and I have to list and describe a few recent (last ~5-10 yrs) issues/lawsuits that the company faced. So far a major one ...
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1answer
37 views

Get notifications for high CPU usage

My new laptop has an M1 chip and no fan, and this is great, but it also makes it hard for me to find out when the CPU has been running high (and consuming more battery than usual). How can I make it ...
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Does deleting a game and reinstalling it over and over can harm the gameplay on IOS devices? [closed]

I’m currently playing games on my iPhone 8+ device and I deleted and reinstalled the same game few times. Now I’m wondering if each time that I’m deleting the app the performance of the game is ...
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29 views

How to force Swap to be on non-OS volume in Big Sur on M1 systems?

I'm running macOS Big Sur on an external drive and would like to use the internal (integrated) SSD for virtual memory (paging) only. The bandwidth and latency of these internal drives seem to make ...
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26 views

Why is my iMac slowing down under multiple users?

Hardware: I have a 2014 iMac 5K. It's got 24GB of RAM and a 2TB SATA SSD I installed myself last summer. Full specs here: https://support.apple.com/kb/SP707?locale=en_US Software: Catalina 10.15.7 is ...
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31 views

Process throttled after exceeding limit of 150 wakeups per second

I have a process that crunches through some data, running more than 12h. Often it completes without issues but sometimes it slows to a crawl as if it is being throttled. The CPU is close to idle after ...
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2answers
56 views

Slow transfer between two external drives

Copying data to a USB external drive is much slower than expected. I have a 6TB external RAID drive that holds my photos, and I'm trying to do an archive copy of this data to another external USB ...
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37 views

Does serverperfmode work on Apple Silicon Macs?

Is it possible to enable serverperfmode on an Apple Silicon Mac? I am using an M1 Mac Mini on macOS 11.2, and following Apple's instructions. I enabled serverperfmode=1 in the NVRAM boot-args, and ...
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1answer
29 views

CPU and RAM usage statistics for iPhone/iOS (similar to Activity Monitor)?

Is there any (preferably free) way to view CPU and RAM usage by process (e.g. app) on iPhone without jailbreaking the device? Activity Monitor on macOS displays Process Name % CPU (per core I believe)...
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714 views

How can I tell if all USB-C ports on a 2020 M1 MacBook Pro are the same speed, or if one or more will be faster than others?

I'm doing some heavy copying of files, and wish to do it via the fastest USB-C connection possible. I tried holding option and clicking on the apple logo on the very top left, then going to System ...
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1answer
156 views

WindowServer and kerneltask using a lot of CPU in Big Sur

I have seen these two questions WindowServer high CPU usage, spikes when moving cursor on M1 MacBook Big Sur MacBook Pro - High CPU Under Low Workload and I have the same problem with WindowServer on ...
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1answer
65 views

Reinstall MacOS or/vs Reformat?

My current install of Catalina has gone a bit wonky. Every other time I start it up it displays the circle with a line through it, so I do a hard restart and it will then boot into Catalina. I'm ...
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1answer
37 views

error code 4SNS/1/40000000:VDOR-17.546

i have some questions about my Macbook pro late 2011 nacOS High Sierra 8 gb ram with 750 gb HDD Q1: my mac performance slow, i do a test and got 2 codes 4SNS/1/40000000: VD0R-17.552, 4SNS/1/40000000: ...
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263 views

MacBook Pro (16-inch, 2019) thermal issues

A few months ago I got a 16-inch MacBook Pro (A2141) with 32GB ram and Core i9 (I9-9980HK) 2.4 GHz processor. My problem is that that it overheats very quickly and drop the performance of the CPU to ...
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1answer
12 views

Bandwidth throttling / simulation for selected host

I can control the network for the whole device with Network Link Conditioner but is there a way to do it just for selected hosts? I know that with /etc/hosts I can totally block connection to a host, ...
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2answers
111 views

Will an iPad with more RAM experience fewer app suspensions? [closed]

My workflow requires me to frequently switch back and forth between Google Docs and other apps and this leads to my Google doc being repeatedly closed. My understanding is that the cause is “app ...
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1answer
16 views

Principle of resolution scaling via External monitor (GPU performance)

I will demonstrate my idea on a 4K monitor, there are 4 options: Native 4K 1692p 1440p 1080p From What I undersrand, the 4K and 1080p should be on par when it comes to the GPU demands as the 1080p ...
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14 views

Catalina - Activity Monitor shows no result for Safari tab energy impact

The Activity Monitor shows Safari consuming 20pts/percent of my 12 hour average energy consumption, but when expanding the entry to see the individual performance of each tab, the result is 0.00? Is ...
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2answers
459 views

High CPU usage in Chrome/Opera

When I open 1-2 tabs with sites that have many images (e-shop as an example) the CPU usage gets to 100% for Chrome/Opera/Firefox. What I've tried: Reset Chrome to default settings Disabled all ...
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50 views

Why is webdavfs_agent consuming 100% of CPU?

I'm getting very high CPU usage whenever I access a WebDAV shared drive (in Mac OS Big Sur v11.1, running on a 2019 MacBookPro 16"). My employer uses a WebDAV server for shared files, and I ...
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225 views

MacBook Pro - High CPU Under Low Workload

I've got the MacBook Pro 16" 2019 (2.3 GHz 8-Core Intel Core i9, AMD Radeon Pro 5500M 4 GB). Since upgrading to macOS Big Sur, I've been experiencing an issue whereby the system will become ...
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10answers
6k views

How to determine if my 2015 MacBook Pro can still handle current workloads?

I work in a company since 2015 and when I joined I was handed over a new MacBook which was the latest at that time i.e 2015 Mid model i7 16GB Ram. This company does not have a rotation policy for the ...
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19 views

iris pro graphics 1536 allocated memory is always full on my macbook 15 2015

I am having a problem with my second-hand MacBook pro 15 2015, I got it second hand and already updated to big sur 11.0. the problem I have is jankiness in web scrolling and a lot of times, I get lags ...
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1answer
89 views

How to make my iPhone 7 faster (at least decent)

I have iPhone 7, with the latest iOS. It was slower and I thought it was because of many apps. I formatted it and use essential apps but it has not made it faster. Last year I had its battery changed ...
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0answers
34 views

macOS Mojave is randomly becoming slow, unable to start/close programs

Is there's way to live disc of mac on an usb or to partially reset an mac to default drivers or perform the equivalent of doing a system refresh without reinstalling an mac? To give some context, my ...
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0answers
29 views

Performance effect of dual-booting with APFS partitions

I have a 2013 iMac with a fixed disk, not an ssd. For unrelated reasons, I dual-boot it with two separate copies of macOS Catalina that share space in the same APFS container. Without knowing much ...
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1answer
126 views

5GHz WiFI speed much slower than on 2.4GHz on my Macbook air 2017

I just setup my new Xiaomi WiFi MiRouter 4A gigabit edition router but my Macbook has only 3MBs speed of uploading while on 2.4GHz speed is 60MBs. Also on iphone and other devices is almost 200Mbs ...
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1answer
282 views

Ways to make Big Sur run faster? [closed]

Some users report Chrome and Firefox being slower on Big Sur On a 2019 MBP 13 (16GB) ... everything is noticeably slower ... even native apps like Preview This reflects my experience. Other than ...
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633 views

Varying performance with M1 MacBook Pro 512GB SSD

As I look around the web, I see the M1 MacBook Pro with 512GB SSD seems to attain 2800-2900MBps read/write speeds in BlackMagic disk speed test. On my machine, after a number of days and trials, I ...
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1answer
52 views

MBP 16" i9 (Late 2019) Possibly Overheating [duplicate]

I just got a 2019 MBP 16" Model with 2.3 GHz i9 (turbo to 4.8GHz). When running simulations in MATLAB I have noticed the fans to spin quite loudly, and the CPU temp is rising very high. I have ...
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11 views

“Usernoted” process eating all my cpu [duplicate]

What is this process and how can I get rid of it? I ran antivirus etc but without any success. Terminating it in the activity monitor won't change anything. Sampling process 416 for 3 seconds with 1 ...
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0answers
68 views

Why do some programs start with a one minute delay, and how to fix it?

Last week, my Mac running 10.15.7 became slow: starting apps took a long time. This is the case for both UI and console programms. After some analysis, I found out that In most cases, program startup ...
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75 views

syspolicyd taking large amounts of CPU, inactive RAM

Recently I noticed my CPU and temp would spike about every 10 minutes, and found the culprit to be syspolicyd. It adds about 50% of my RAM as inactive as well. I updated the operating system and any ...
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1answer
225 views

Is there a difference in performance between a the default scaling option and selecting a resolution?

I just got a new 27" 4k monitor. At default resolution, text and menu items are too small for me to be usable. In the display settings, there are options to "Scale" the resolution, but ...
2
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1answer
188 views

How can I monitor MacBook USB bandwidth?

I have a late 2017 MacBook with the latest Catalina. Using two Anker USB extenders, I have devices in pretty much every port, including six large external hard drives, a webcam and an external SD card....
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1answer
73 views

How to benchmark a NAS from a Mac (Neither fio nor bonnie++ work)

I want to test the performance of a NAS before and after I change its setup. I have found two tools for this, fio and bonnie++. The problem is that they are both broken on Mac right now (and have been ...
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78 views

Macbook Pro 16 inch CPU clock oscillating and graphics lagging

EDIT 3: It's nothing to do with which GPU the system is using. The thing that seems to be triggering the failures is wifi. If I switch wifi off from the Apple menu then the CPU ramping stops, the ...
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2answers
332 views

macOS Catalina RAM usage - 2GB at boot?

I am trying to understand why my almost factory settings 13-inch MacBook Air 2017 with 8GB RAM available takes 2.3GB to just boot. The result is that if I start having Chrome+Dropbox+something to ...
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26 views

How do I optimize a Macbook Pro to run a particular tab of Chrome?

My work involves running a specialized Web application. I'm using Google Chrome on a Macbook Air laptop with 8 GB of RAM. With gmail open in one tab and this app open in another Chrome window, my Web ...
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0answers
125 views

Severe input lag for mouse and keyboard

I have a small problem with my mac. I'm currently restricted to game on my Macbook Pro (13"/2017/i5/iGPU iris 640/16gb) with macOS 10.15.7. I can't do Bootcamp on this machine for disk-space ...
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3answers
327 views

Mac Becoming Extremely Unresponsive After Updating OS (Low CPU Usage)

I recently updated my 2015 iMac to the new OS (10.15.7) and at times it becomes incredibly sluggish to the point of not being able to do any productive work. It sometimes takes 20-30 seconds just to ...
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1answer
11 views

Slowdown and lost windows when connecting/disconnecting external monitor

When I connect my external monitor, my 2017 MacBook Pro (OS 10.15) will freeze or have severe slowdown for more than a minute. When disconnecting, I often lose windows that I can't recover through any ...
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1answer
61 views

Delay in screenshots and cursor issue on MacOS after update?

I'm running 10.14.6 (18G6032) Mojave on my early 2015 macbook pro. There was some kind of software update in the past week, and I've noticed 2 issues since I updated that I suspect was due to the ...
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0answers
14 views

Macbook Pro running very slow and Power button needs to be held down for 7-8 secs to turn on

I have a Macbook Pro 13" Early 2015.I have been using it for about 3 years and was working completely fine. Few Months ago, my charger stopped working and I didn't use it for over 3 months. Later ...
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1answer
29 views

Can I run 2 16 Gig ram in my MacBook Pro (Retina, 15-inch, Mid 2015)

I am looking to increase the ram in myMacBook Pro (Retina, 15-inch, Mid 2015) 2.5 GHz Quad-Core Intel Core i7. BANK 1/DIMM0: Size: 8 GB Type: DDR3 Speed: 1600 MHz Manufacturer: 0x80AD Part ...
4
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2answers
262 views

Is it taxing on the mac computers' performance to have multiple user accounts and not log out of them?

I have separated my digital life into 2 user accounts on my macbook into work and personal. In order to switch between these two accounts more easily I usually lock the screen and switch to the other ...
7
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2answers
3k views

Process “accountsd” has over 500% CPU usage [duplicate]

I'm on Catalina 10.15.6 on a MacBook 2019 (16-inch) and one hour ago after startup my mac started with an extremely loud fan and overheating. As Im writing this even the typing is lagging behind. ...
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1answer
431 views

slow boot (and slow EFI?) in brand new MacBook Pro 16"

I have a very new Mac and it seems far too slow to boot in both Catalina and now Big Sur perhaps it’s worse. Device : MacBook Pro 16 inch (MBP 16.0) CPU 2.3 8 Core intel i9 16GB DDR GPU Intel UHD ...

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