Questions tagged [performance]

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

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46 views

Can the files being transferred affect/slow the data throughput?

I'm currently trying to carry out the initial backup of an iMac using Time Machine, backing up to a Time Capsule (3TB, the older 'flat' type). The TC is connected via Ethernet and for reasons to do ...
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1answer
607 views

If I remove my internal optical drive from my 2012 MacBook pro, will an external superdrive work?

My internal optical drive is not working despite attempts to clean it. I have an external USB Superdrive but it will not work with my MacBook Pro since it has the internal optical drive. If I just ...
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0answers
268 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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2answers
1k views

How can I verify if Apple is slowing down my phone because of an old battery?

Apple has recently confirmed they're slowing down phones which have a battery that's too old. How can I verify if that's the case for my particular model? Is there an app that can tell me the current "...
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2answers
56 views

Storage, what percentage to leave free?

Flash memory and SSD controllers are reported to spend more time running wear-leveling and/or anti-fragmentation garbage collection algorithms when their storage is near full. People have reported ...
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5answers
2k views

Does the iPhone 6 “CPU-throttling” feature stop after the battery is replaced?

There is recent news (acknowledged by Apple) of a feature in some software versions of iOS that reduces the current usage of the iPhone6 and 6S when the battery ages and is less able to supply current,...
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1answer
2k views

Laggy MacBook Pro on High Sierra and 2 external displays

I've got a late 2013, 15-inch retina MacBook Pro. Since a couple macOS upgrades ago, my system has become randomly slow, borderline unusable. I've come to realize it spikes when using 3 displays (2 ...
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1answer
30 views

What could cause swapping when there is no memory spike?

I had a performance issue recently, which I was able to capture in the Monitor. It looks like there was plenty of free memory, but then suddenly the graph goes red, with no real spiking. Could this ...
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1answer
286 views

Does the mid-2010 Macbook Pro (Core 2 Duo) support memory compression with OS X 10.9+?

The machine in question is a mid-2010 Macbook Pro w/ the Intel Core 2 Duo (P8600 2.4GHz). I'm not entirely clear on whether or not the memory compression feature in OS X 10.9 (Mavericks) and beyond ...
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1answer
2k views

4K Monitor and performance issues with MBP Late 2015

As a software developer I insisted on buying a 4K Monitor which used to work with my previous MBP 2017 quite ok.The Retina MBP Late 2015 has output that lags quite a bit when I use a scaled resolution....
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1answer
243 views

Why does Chrome have much better performance in rendering 3D graphics than Safari?

I used the models in this website to test the performance of my computer to render 3D graphics, and I found that dragging a 3D model is very choppy in Safari, while in Chrome it’s much more fluid. I ...
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1answer
64 views

How can I make Intel Core i7 Mac perform at i3 or i5 level?

I need to do some performance testing, and I need the MacBook to behave at i3 or i5 speeds. Is this possible? If yes, how? I have the MacBook Pro Retina / macOS Sierra 10.12.6 / 2.2GHz Intel Core i7.
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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 ...
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1answer
1k views

What could cause a cumulative slowness that manifests itself as high WindowServer CPU usage in High Sierra?

My system is a MBPro with the GT750M graphics card, mainly using Chrome/Opera After a day or two of regular usage, it's clear something is accumulating and eventually causing a slowness that shows ...
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2answers
1k views

Choppy mouse in High Sierra

Just did a clean install. Oddly enough, when booting up, mouse responds immediately. But after a while it becomes choppy. I am still setting up the machine, so I have no heavy applications running. ...
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2answers
56 views

MacBook Pro Thermal issues

I’m having thermal issues with my MacBook Pro 17” late 2011 model laptop I7 2.5 quad core with 16GB of RAM. Has anyone had any thermal issues when running DAW software on this particular laptop? ...
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3answers
7k 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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1answer
966 views

Can I get stable 4K 60Hz with two external displays without MBP screen on? What about performance with MBP15 mid-2015DG

I want to buy two 24 or 27 inch monitors for work (Xcode, Sketch, Android/Visual Studio) with high screen resolution. I'm worried about performance with my notebook (MBP 15" mid-2015 DG, 16GB RAM, ...
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1answer
123 views

How to trigger spinning wheel diagnostics report

I'm working on application that consume significant CPU time and memory under heavy load. my setup configuration is fusion VM that runs macOS Sierra 10.12.6. At some stage I get spinning wheel and ...
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1answer
310 views

Will playing CSGO overheat my Mid-2012 MacBook Air?

I've been in a dilemma for a long time that my MBA can't run a decent game. The last thing that I've played is Unturned which didn't really require a high spec but my MBA heats pretty much every time ...
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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
150 views

iPhone SE problems on 11.0: apps freezing and voice call problems

Right after update to 11.0.0 (and all further updates up to 11.0.3) my iPhone SE experience became quite painful. I have two different symptoms: Many apps are freezing for several seconds at random ...
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1answer
276 views

Performance issues with Dynadock after upgrading to OS X Sierra 10.12.6

I just took an update today of OS Sierra 10.12.6 on my work laptop (MacBook Pro (Retina, 15-inch, Mid 2015)). Which I had been putting it off until now. After the upgrade, I noticed that the frame ...
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2answers
1k views

How to determine what keeps causing my mouse cursor to stick or slow down a lot?

Every once in a while, my mouse cursor will stop for a second, or move extremely slow, every half minute or so. I recently upgraded to High Sierra, but also noticed this occurring when running Sierra. ...
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0answers
772 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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1answer
2k views

MacBook Pro 2012, HDD speed 80MB read/write normal?

I have a MacBook Pro 13" (non-retina) from 2012 with a 512GB HDD. I've run some speed test with BlackMagic and those are around 75-80MB/sec for read/write. This seems slow, but maybe this is normal ...
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3answers
515 views

How to speed up my iMac after upgrading to Sierra?

I have this: iMac (21.5-inch, Late 2012) 2,7 GHz Intel Core i5 16 GB 1600 MHz DDR3 NVIDIA GeForce GT 640M 512 MB Some days ago I updated to Sierra 10.12.6, and all my apps. My HD currently have ...
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1answer
175 views

Transfer speed much slower in Wi-Fi than Ethernet

I'm transferring a lot of pictures from my Macbook Pro to a local Synology NAS (DS116), using an FTP software named Transmit. I noticed that the upload speed is quite different between Wi-Fi and ...
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1answer
91 views

Install second operating system on internal (as VM with Parallels) or external drive?

I am using an old MacBook and I want to keep my operating system. For coding with Xcode I would need a newer version of OS X. My question is, if the performance is better when I: Install the new ...
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1answer
1k views

Skype on MacOS keeps 600Mb caches, are these both deleteable?

Skype (7.56.0.776) on MacOS (10.10.5) keeps 600Mb in the two caches below, are these both deleteable without any negative effects? Can I prevent Skype doing this with any (Skype or MacOS) config ...
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1answer
334 views

Are loading times using a USB hard drive slower?

I recently installed Snow Leopard on a 2 TB USB 3.0 hard drive for my 2009 White MacBook, since the internal hard drive is broken (it no longer shows up during boot or in Disk Utility). The external ...
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1answer
761 views

My MacBook Pro, High Sierra downloaded 13G last night while asleep

The system was presumably closed at my workplace. How can I find why ? Some light on those 13Gb ? How Activity Monitor finds those numbers ? I will be glad to provide more information while the ...
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2answers
3k views

How to stop throttling

How could I improve the performance of my MacBook and stop throttling? Although the CPU load is not by 100%, the CPU cores heat up to 100 degrees.
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1answer
718 views

MacOS Sierra how to reduce priority of iCloud drive sync?

I have an older Macbook air and since upgrading to Mac OS Sierra get major performance issues. I see over 1000 threads in activity monitor and am trying to understand if it is due to iCloud drive sync ...
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2answers
96 views

How to optimise my script, a script for opening new a new emacs instance only if no instance is present

I use emacs and I have written a script which is half in bash and half in AppleScript in order to do the following (first I write the code and then the pseudocode). We assume that a emacs daemon is ...
4
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1answer
3k views

MacBook Pro 2017 SSD write speed slow

I just bought a new MacBook Pro 2017 (no TouchBar) a month ago. I have run a speed test with Blackmagic Disk Speed Test application. The result is in image below. I think SSD write speed is a little ...
4
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1answer
2k views

Does an iPhone throttle its CPU under heavy load?

I noticed some Android devices clock down after a while. So they only may perform at peak performance for a single benchmark. Is this also true for iOS devices? How do they behave under heavy load, ...
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1answer
676 views

Ridiculously Slow Macbook Pro 15inch Early 2013

I stumbled on other posts about the Ridiculously Slow Macbook pro 2013 That were remedied by replacing the harddrive cable. I am dealing with agonizing sluggish behaviour on my mac, It seems to be the ...
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2answers
2k views

Mac OS UI Slow Response

I am new to Mac so forgive the naive question. I have used Windows & Linux for a long time in the past and no matter how slow the system becomes (this actually applies almost only to Windows), the ...
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1answer
6k views

27‑inch iMac 2017 i5 vs. i7 [closed]

I own a bit old MacBook Pro (Retina, 15-inch, Mid 2014) with 2,2 GHz Intel Core i7, so I'm considering replacing it with a new iMac, but not sure which CPU should I choose. 3.8GHz quad-core Intel ...
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1answer
2k views

Speed of Card Readers Speeds of Macs

Is there a way to find the read/write speed of the SDXC card readers on Macs? I've been looking for it in System Information, or some chart on the web, to no avail. (I'm specifically looking for ...
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3answers
276 views

Upgrading RAM in Late Model 2009 iMac

Is it worth upgrading an iMac late 2009 model to max RAM at 16gb for video editing/exporting? Currently to export a 3gb video file in Final Cut Pro it takes 1 - 1.5 hours to export the file. Is it ...
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1answer
146 views

WiFi Performance via Terminal

Is it possible to test the performance of a WiFi via the terminal? Basically, I want to check how good WiFi is in some spaces of my home to figure out where to place a access points. Can the ...
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1answer
116 views

What physical maintenance should I perform on a MacBook Pro?

I have a 2009 and 2013 MacBook Pro (MBP). My wife has a 2015 MBP. I'd love to maximize their lifespans by taking care of them physically. What there any physical maintenance that I can perform on ...
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2answers
4k views

softwareupdated running at 100% CPU roughly every hour (Yosemite)

Roughly every hour, my MBP gets very hot, my fans go crazy, everything slows down, and when I look in Activity Monitor it tells me that softwareupdated is running at 100% CPU. It lasts about 2-3 ...
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1answer
3k views

kernel_task Virtual Memory Size too high

I'm using MacBook Pro ("Core i7" 2.5 15" Mid-2015 (DG) 2.5 GHz Core i7 (I7-4870HQ) 16GB RAM) with MacOS Sierra 10.12.4 on it. After connecting a new LG 34UC98 Monitor I faced some heat problems and ...
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0answers
8k 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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2answers
500 views

How to introduce a list object that is stored in a .txt file to an AppleScript?

I have an AppleScript .scpt file, triggered by a key combination in FastScripts.app, that functions as a thesaurus. The script looks up the selected word in a pre-formatted list, and, if the word is ...
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0answers
604 views

My Mac Pro fans completely refuse to speed up

I recently purchased this 4,1 Mac Pro in pristine condition. Only issue is, none of the fans will speed up under heavy load. The temps can go up to 90°C and none of them speed up. I can manually speed ...
2
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1answer
2k views

How to disable the power management of the CPU on a MacBook Pro?

Since few days the battery of my MacBook Pro (Retina 15 inch, running macOS Sierra 10.12.4) is not working anymore. Since then, my computer performance is really bad: everything is slow and freezing,...