Questions tagged [performance]

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

141 questions with no upvoted or accepted answers
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285 views

Messages is unusable due to unresponsiveness!

Messages on High Sierra has become increasingly unusable for me. I get frequent (every dozen words or so, at least once per message) long (5-20s) lags when typing — which seem to occur most often when ...
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2k views

recentsd process has very high memory usage (almost 2GB) - how to fix?

Right now, activity monitor shows that a process called "recentsd" is using 1.82GB of memory (1.08GB compressed, 752MB private) on my MacBook Pro running macOS 10.13.1. Some googling has lead to the ...
4
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1answer
2k views

Extreme slowing down of MacBook Pro due to pkd process

I am debugging this issue for several days now, but just realized that a certain pkd process is responsible for extremely slowing down my MacBook Pro. When I kill this process, everything works fine. ...
4
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669 views

AppleSpell error: Contacts change history truncated, resetting!

My macOS High Sierra system is increasingly slowing to a crawl and having huge spikes in CPU usage, notably in Messages, but even when it not running. The logs that seem to be most closely associated ...
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0answers
782 views

after High Sierra upgrade: very slow opening big files > 1 GB and message “Verifying”

When opening a big file (for example with VLC or QuickTime) this message pops up for lots of seconds (different durations for each file): I use encryption on iMac 5K. > diskutil list /dev/...
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0answers
331 views

Higher kernel_task CPU usage when playing audio through Thunderbolt Display

I noticed today a higher kernel_task CPU usage when playing audio through Thunderbolt Display from my Macbook Pro (early 2011) on OS X Yosemite. Although the CPU usage is not very high (15 - 20%), it ...
4
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1answer
3k views

How do I debug Airport Extreme (5th gen) + iPhone 5 wifi performance problems?

Right around when I bought iPhone 5s for my wife and me I also moved in to a new, larger house. I was finding that wifi performance on our fancy new phones was terrible: I have a 35mbps internet ...
3
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1answer
1k views

2019 MBP 16" 2.3Ghz i9 severe thermal throttling (Catalina 10.15.5)

Brief Summary 2019 MBP 16" 2.3Ghz i9 shows severe thermal throttling CPU Frequency hovers around 1.9-2.0 Ghz Power draw doesn't exceed 30W Max Temperature only 76ish degrees Celcius Exporting a ...
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105 views

softwaredownloadd consuming insane amounts of RAM

When I went into Activity Monitor, I noticed that a process called storedownloadd was consuming 2.7GB of RAM and increasing RAM usage steadily (3.1GB during screenshot). However, it was not consuming ...
3
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872 views

Speed up FileVault decryption process

There is a reason for me (testing) to turn off FileVault encryption on the boot drive on my Mac running macOS High Sierra (long story, off topic). So, I turned it off in System Preferences. I also ...
3
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0answers
4k views

Macbook performance issues with browsers

I have a MacBook Pro from 2013, and I'm having issues in both Chrome and Firefox - both are slowing down to a crawl, and when I check Activity Monitor I have multiple processes (in all the 'tabs' at ...
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363 views

Parallels 13 internet speed is slower than the MacBook pro speed

How do I get the internet speed on the virtual machine the same as the Mac book internet speed? The Mac speed is 300-400 and the virtual machine is 70-120.
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2k views

Choppy/Jerky Video Performance on MacBook Pro 13" 2016

I upgraded from a Late 2013 MacBook Pro 15" to the 2016 13" MacBook Pro. On my old laptop, watching YouTube videos, and PlayStation Vue was smooth. However, on this new laptop, the video is jerky/...
3
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0answers
986 views

High windowServer CPU usage on Yosemite

Since upgrading from Mountain-Lion to Yosemite, my MacBookPro5,5 (13", 2.26GHz C2D, GeForce 9400m) is (almost always) showing bad performance while working with native windows like Finder, System ...
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132 views

Prevent Open/Save dialog from solliciting external hard drives

I have several external drives, which I don't use constantly, and so they spin down, and rest. Unfortunately for me, every time I have the "Open..." or "Save..." dialogs, Mac OS X spins these hard ...
3
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0answers
758 views

Is there source code or an update for the Mac Pro 3,1 overclock utility that ZDNet produced several years ago?

The Mac Pro from 2008 (MacPro3,1) is still a fairly relevant machine in the modern OS X as not only does it run the latest releases of OSX, but also the 8 CPU cores that it came with provide enough ...
2
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630 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 ...
2
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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 ...
2
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0answers
24 views

Slow file transfer from & between iMacs

I have a problem with slow file transfers from & between 2 iMacs which I'm hoping you can help with. iMac27 is a 2009 with 12Gb RAM & a 1Tb HDD running High Sierra 10.13.6 iMac24 is a 2007 ...
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0answers
45 views

Apple photos takes seconds to load in file chooser dialog

See image below. The spinner takes almost 10 seconds before showing actual photos. I'm on a 2014 MBP with SSD and I have only around 16.000 photos (60GB in total). This slow loading time only occurs ...
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0answers
2k views

Mid 2015 retina MacBook Pro: Startup slow after SSD Upgrade

I've recently upgraded my Mid 2015 retina MacBook Pro's original 500 GB SSD to a 2 TB Samsung EVO 970 NVMe M.2 coupled with a recent model Sintech SSD adaptor. I am running macOS High Sierra 10.13.6. ...
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0answers
407 views

Slow animations/graphics after waking from sleep or sometimes at random

Product: Model Name: MacBook Pro Model Identifier: MacBookPro11,4 Processor Name: Intel Core i7 Processor Speed: 2,2 GHz Number of Processors: 1 Total Number of Cores: 4 L2 Cache (per Core): 256 KB ...
2
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0answers
925 views

loginwindow high CPU usage

I have simple zsh script which executes the following code at a regular interval. spotify_track=`osascript -e 'tell application "Spotify" to name of current track as string'`; This is causes ...
2
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0answers
885 views

Disable Intel SpeedStep on a mid-2015 MBP w/ High Sierra w/ kernel_task issue

Please note I've read every other thread about this issue, and none of the suggested solutions work, primarily because they either refer to older OS versions or to removing machine profiles in ...
2
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0answers
214 views

Ffmpeg: Arguments for optimizing video stream?

I'm using FFmpeg from a Debian machine on my local network. This machine is listening from incoming streams: $ ffmpeg -i udp://192.168.1.3:8080 /path/to/out.avi And from my MacBook, sending the ...
2
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0answers
107 views

That Kernel Process Bloat

This is probably a question best suited for Apple Support Forums, but after asking variants of this question there to no avail, I will try here instead. I have a 2012/2013 2.3 GHz i7 Mac Mini w/ 16 ...
2
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0answers
13k views

Mac performance issues and dyld cache

I have MacbookPro mid 2012, Sierra 10.12.4, 512 GB HDD (the initial factory disk), and 16GB RAM (2x8GB, memory was upgraded from the initial 4GB). Periodically I get the spinning pinwheel of death (...
2
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0answers
128 views

Late MBP 2015 vs MBP 2016 gaming experience (WoW, HotS)

I fully understand these machines are not designed for gaming at all, but I was wondering if you guys can tell me approximate FPS for these games: World of Warcraft Heroes of the Storm with let's ...
2
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0answers
591 views

Why are read/write speeds on my Time Machine drive so low?

So I have an external SSD connected with a SATA to USB 3.0 adapter to my retina MacBook Pro. The wire supports speeds up to 6 Gbps. I could write to the SSD itself at such a high speed. I created two ...
2
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0answers
119 views

iOS frame rate drop without maximum device utilization

I am making an iOS game using Unity. I am testing some shaders that I have made for the game, and in some cases the device will run at under 30 FPS but not have 100% device utilization. Sometimes a ...
2
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0answers
287 views

iBooks on El Capitan

I have a large number of items in iBooks. Some are ePub, and there are lots of work related PDFs. In total, I have around 20k documents that I want to sync to my iPad to carry around as a convenient ...
2
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0answers
80 views

What is Yosemite doing when it has a seizure?

Ever since I installed Yosemite on my iMac, it's become unresponsive for about 5–10 seconds when I do any of a variety of common actions. The following usually trigger a delay: a few seconds of no ...
2
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0answers
2k views

Airport Extreme (5th gen) throttling ethernet internet speeds

I purchased the router in 2012, and am experiencing slower speeds than expected from my Airport Extreme. Brand new 16x4 channel DOCsis3 modem on Time Warner's approved list. 200 Mbps plan, and ...
2
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0answers
683 views

FreeNAS, OS X Yosemite and automount

I've got FreeNAS 9.3 server (HP Microserver N54L) and connecting to it via NFS from my multiple OS X systems (running OS X Yosemite 10.10.1). I've always had low performance over the network (1Gig ...
2
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0answers
112 views

What causes playing a video in browser to take up all the RAM?

I've been noticing lately that when I'm playing a video on my Mac from say Hulu, Netflix, Youtube, any video site via a browser, the computer gets extremely laggy for 5 minutes and then acts normal. I'...
2
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0answers
374 views

OS X 10.9.2 has slowed down MATLAB

I am using 10.9.2 late 2013 computer to analyze my data, specifically with MATLAB, and generally I have many MATLABs open in parallel, doing some analyses for me. MATLAB, X or Y is completely ...
2
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0answers
75 views

Chrome loads very slowly while Safari very fast

Chrome loads any web page very slowly. Even making a google search takes more than 15 seconds while the same occurs in Safari instantaneously. I cleared the cache and disabled NPAPI plugins as ...
2
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1answer
119 views

How can I prevent “Open With…” from accessing external drives?

Frequently, when I try to open the (10.9) Finder's "Open With..." menu, I experience a delay that appears to be due to connected FireWire drives. This delay is very long when the drives need to spin ...
2
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0answers
713 views

AppleScript to find old mail messages is slow in ScriptEditor

So I have an AppleScript that iterates over all the messages in various mailboxes and finds messages which meet various criteria and moves them to Deleted Items. The mailboxes in question are ...
2
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0answers
633 views

How to fix 10.8 internet sharing resulting in poor file sharing performance and no Time Machine server?

TL;DR - File sharing performance is extremely poor on a Mac Pro running 10.8.2 with file sharing enabled. Using it as a Time Machine server also no longer works in this setup. I have been ...
2
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0answers
581 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?
2
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1answer
41 views

How do I lower OS /system resource usage /adjust for best performance?

Lets say I want to dedicate all resources in running some code so I would like to decrease operating system usage as much as possible i.e. the mac equivalent of adjusting for best performance (e.g. ...
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0answers
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 ...
1
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0answers
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 ...
1
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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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0answers
45 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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0answers
217 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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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 ...
1
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1answer
58 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 ...