Questions tagged [performance]

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

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18 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
53 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
24 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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1answer
117 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
9 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
106 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
189 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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0answers
35 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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75 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
62 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
31 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
84 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
185 views

Ways to make Big Sur run faster?

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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0answers
482 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
47 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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66 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
142 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
129 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
65 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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68 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
253 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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25 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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107 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
256 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
44 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
13 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
27 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 ...
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2answers
200 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 ...
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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
360 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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2answers
195 views

Seemingly random CPU throttling

My 2018 macbook pro with i9 processor running Catalina version 10.15.6 seems to randomly throttle the CPU frequency even with low CPU utilization and lowish temperatures: I am using a docking station ...
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0answers
13 views

Does a deteriorated battery affect macbook performance when plugged in? [duplicate]

My early 2015 macbook pro battery has had the "service battery" warning for over a year now. I hit the 900 cycle mark before last summer, and now I'm at about 1000. The battery lasts for <...
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0answers
19 views

MacBook Pro 2017 model with non-existant upload speeds

MacBook Pro 2017 model (model A1707) with major upload speed issues. If I do a test from speedtest.net I get pretty decent speeds, but not quite what my ISP offers, but that's ok. I get about half ...
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3answers
574 views

High CPU usage by system

I'm having by time to time problems with my OS running really slow because the System uses a lot of CPU (it stays like this ~30min). I've checked different articles on the internet in regard to this ...
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2answers
332 views

Macbook air 2020 overheating

I just got my macbook air and installed some apps on it. But it started to get hot and I don't know why. The ram usage is 5 GBs out of 16 GBs and CPU usage is about 7%. But still the bottom of my ...
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5answers
225 views

Mac book air Admin account slower than fresh brand new user account — I have tried a lot to fix

I have a Mac book air 2017 running Catalina. I have noticed my admin account being a little slow. Safari launching slower and some other apps slower I did a test and made a new admin user. I logged ...
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26 views

Max Core Frequency almost always at boost clock speed

I have a 21.5" iMac (2017, Retina 4K, 3.4GHz, 8GB RAM). Whenever I open Intel Power Gadget, the Maximum Core Frequency is always at 3.8GHz — apart from a few momentary dips — even if the ...
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0answers
50 views

Why is this Mac mini so slow?

To replace my mid-2011 iMac (12 GB RAM, 2.7 GHz i5, Radeon 512 MB), whose Radeon Graphics card is slowly passing away, I purchased a mid-2011 Mac mini (10 GB RAM, 2.5 i5, Radeon 256 MB) with same HD ...
2
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2answers
102 views

Best release of MacOS for mid-2010 iMac

I have a mid-2010 iMac that I haven't used for a while. I wiped the disk and installed High Sierra (10.13.6). I don't remember the previous release of MacOS it was running with. It has a 3.2GHz i3, 1T ...
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1answer
224 views

Broken battery - downgraded performance

I have old MacBook Pro that has a dead battery. It is not charging, and displays always 0% battery charge. OS X is downgrading performance when battery level is close to something about 5% or 10%. Is ...
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0answers
59 views

kernel_task takes 100% of the CPU permanently

I have a problem with my computer and, although I can find some discussions about it on the internet, I was so far unlucky with what I tried. So I would like to share here this issue in more details. ...
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0answers
23 views

Which exact CPU models are used or can be used in the iMac Pro?

The iMac Pro's CPU is upgradable, but documentation on this seems scarce. I found out that the top end 18-core CPU is a Xeon W-2195. Which other CPUs are supported? I could try to find which Xeon-W ...

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