Questions tagged [performance]

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

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1answer
88 views

Can Firewire 800 network interfaces be bonded?

I've got a few 2009 and 2010 Mac Pros and realized that the Firewire 800 ports are just sitting there going to waste. I currently use 2 bonded ethernet ports on an additional card to facilitate some ...
2
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1answer
2k views

Windows 10 VM Freezes in Parallels 13 - Windows 7 VMs are OK

For years I have run Windows 7 VMs using Parallels on the Mac without any problems I have recently virtualised a Windows 10 laptop to a virtual machine using the Parallels tools - this VM freezes ...
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1answer
1k views

Why is Adobe Acrobat using only one core for a heavy task, and how can I make it perform faster?

Adobe Acrobat is performing Optical Character Recognition on a document with thousands of pages. This is a heavy task which will take hours. Activity Monitor tells me that Acrobat is only using one ...
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0answers
604 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 ...
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2answers
1k views

Why my 2009 macbook pro is faster than my 2017 retina iMac?

A couple of years ago I bought a used macbook pro from a friend of mine, I knew it was a good deal cause the mbp was modified and had very good response and performance, the specs of this mbp are the ...
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0answers
123 views

number of pg_ctl processes keep increasing on macos High Sierra

After approximately one day of system uptime, my MacBook Pro runs extremely slow. I am running macOS 10.13.5 and Activity Monitor shows ~70% idle cpu usage and the memory pressure is on green but ...
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2answers
68 views

Can i swap memory modules between mac

I have 3 mac's Mac Mini 2.4 GHz Core 2 Duo , 2GB 1067 MHz DDR3, Macbook pro (15", Early 2011), 2GHz Core i7, 4GB 1333 MHz DDR3 Macbook Air (13" Mid 2012), 2GHz Core i7, 8GB 1600 MHz DDR3 Is it ...
2
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0answers
188 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 ...
3
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0answers
310 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.
2
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1answer
242 views

How to determine why my Mac temporarily freezes?

Every couple days, my Mac will simply freeze for several seconds to a few minutes. Any audio stops playing, and the mouse stops responding. Then it's back to normal. The 99.9% of the time it's ...
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1answer
516 views

Does my Macbook Pro 15" Late 2013 Geekbench 4 score indicate a faulty discrete GPU?

According to my Geekbench 4 results, my discrete GPU Open CL score is ZERO. Additionally, my discrete GPU Metal score is lower than that for the Iris Pro! Does this mean my duscrete GPU is faulty? ...
70
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5answers
21k views

A tech from MacKeeper wishes access to my computer for licensing and activation. Is this a scam?

I paid for a version of MacKeeper which may be a mistake. Their tech wants me to allow them to access my computer as in have access to my desktop files, etc. They say it is to fully license and ...
21
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3answers
15k views

sharedfilelistd and distnoted hog CPU

I understand from my findings on the topic that sharedfilelistd is an "agent that is used by applications to read/modify recent documents/servers/hosts" and distnoted a "distributed notification ...
3
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1answer
436 views

Protecting iMacs from high humidity

I am moving to Costa Rica and want to take both of my iMacs. Humidity and salt air are a problem. Will leaving the iMac running help to keep humidity out of the unit? I see only one vent; maybe a ...
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0answers
63 views

How can I optimize for file sharing on my Mac Mini 2014 (High Sierra 10.13.4)?

I'm running a Mac Mini 2014 with High Sierra (10.13.4) and am experiencing some lag, since adding a pair of Thunderbolt RAID drives. I've also added 25 or so SMB sharing users. Only a few users are ...
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0answers
845 views

MacBook Pro 15" 2015 CPU throttles down to 0.8 GHz

My MPB has had this problem for years every time the ambient temperature gets a bit warmer. It starts in the spring and gets ridiculous during the summer. The MBP clocks down its processor to 0.8 GHz,...
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96 views

Underclock retina iMac [duplicate]

My iMac is wonderfully performant, but under extended load it sounds like a hive of angry bees. I am using Turbo Boost Switcher to avoid using up all the CPU headroom, but for multithreaded ...
2
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1answer
130 views

Why my macbook 2015 13 inch hums when working with latest Xcode?

What may be the cause of this? It happens every time when I build the app on either simulator or device. Should i clean sth or reset my harddrive? using High Sierra and Xcode 9.2 EDIT: It is ...
6
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1answer
522 views

What is the benefit of macOS dropping support for 32-bit software? [closed]

It has been hinted at in the past but now we're starting to see solid notice from Apple that it is dropping support for 32-bit macOS programs in the near future. While I can see how this makes sense ...
8
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2answers
821 views

Why is Illustrator throttled to 2% speed when it's in the background?

I regularly run a .jsx script in Adobe Illustrator that saves a bunch of files in a particular format. while Illustrator is the active app, running the script on 5 files takes 23 seconds. When ...
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1answer
4k views

Free up unused memory from kernel_task

I am a web developer, and sometimes I encounter software bugs that has runaway threads or used up available memory in a browser process. Terminating the offending Chrome process will free up the ...
2
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2answers
109 views

Slow initial app window opening, but only in certain situations?

I use some apps that can accept files a few ways: open and then use its own file select dialog "open with" from Finder "drag & drop" from Finder Method 1 is fine and the app responds as expected....
1
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1answer
150 views

Regaining efficiency on older iPad

I still have the very first retina iPad. Purely from empirical comparison, I have the impression that it has gradually become slower. At this point it is sometimes irritatingly slow, even for trivial -...
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2answers
487 views

MacBook Air (mid 2013, 13", i5) - Geekbench scores on MacOS and Ubuntu

Today I decided to do a clean install on MacBook Air - did an online recovery, erased the disk and installed MacOS High Sierra. Even clean it didn't behave really good so I decided to try Geekbench - ...
6
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1answer
4k views

How can I switch spaces instantly? [duplicate]

I can't overstate the significance of "instantly"! I'm trialling a working process that makes very heavy use of spaces. Heavy enough that any delay when switching spaces is making it essentially ...
1
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1answer
761 views

Why is My Mac Running So Slowly?

It's a Mac Mini, Late 2012, 2.4 GHz Intel Core i7, 16 GB RAM and an internal fusion drive of 1 TB, running macOS High Sierra 10.13.3. The issue is that it's running so slowly that there I can move ...
9
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2answers
640 views

How can I tell if a directory has APFS Fast Directory Sizing enabled?

Apple's technical documentation in the Apple File System Guide describes that some directories like /tmp are not good candidates for the fast directory sizing feature. Fast directory sizing works ...
7
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1answer
14k views

External display resolution does not match what is specified in Mac OS settings

I am using Dell P2715Q display (4K) with MacBook Pro (Retina, 13-inch, Early 2015). It is by default scaled to 1920 x 1080 @ 60 Hz (copied from System Report). But the display shows "Resolution: ...
1
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1answer
484 views

Can Turbo Booster (3rd Party Application) damage your CPU?

I have turbo booster installed on my old macbook pro which I currently use to handle files between my iMac Pro and the macbook. The macbook has a base clock of 1.4 Ghz turbo boost upto 2.3 Ghz. On ...
5
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1answer
4k views

Poor performance with Virtual Box on MacBook Pro 2017

I am running Ubuntu 16.04 via Virtual Box on my MacBook Pro 2017 w/ TouchBar (3.3Ghz i7, 16 GB 2133 MHZ) and I am getting a very laggy and unpleasant experience on the machine. I have gone through the ...
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3answers
1k views

High Sierra: WindowManager and kernel_task - Now you see it, now you don't!

I have long had issues with both Window Manager and kernel_task taking up seemingly inordinate amounts of resources on my systems going back in the OS release cycle for as long as I can remember, but ...
2
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2answers
821 views

Why Geekbench result is three times lower than another result for the same model

My MacBook Air (13 inch, mid 2012) started to be very sluggish recently: every action occurs after a visible delay (starting app, loading youtube in a browser, startup, etc). Besides, Newer Tech ...
2
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1answer
4k views

15" Macbook Pro: Radeon 555 or Radeon 560?

How different is Radeon 555 and Radeon 560 in the 15-inch Macbook Pro 2017? Are there any notable differences between the two?
2
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0answers
92 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 ...
5
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1answer
5k views

Random extreme CPU spikes on random browser tasks

I've noticed that every once in a few days (sometimes daily) my CPU spikes to a 120% or such usage when any of my browsers are open. The scenario is weird, today I was watching a movie using VLC ...
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2answers
11k views

MacBook Pro Late 2011 worth upgrading? [closed]

I recently bought an MacBook Pro Late 2011 with an i7 2.2 GHz and 4 GB of RAM. I wanted to get started in some mobile development and learn how to work with macOS. So this was a good offer online. ...
13
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2answers
3k views

ZSH paste from the clipboard a command takes a few second to be write in the terminal

When I copy from the clipboard a long string command in my iTerm, the terminal freeze for seconds. for example, if I copy the following test and I paste in my iTerm console: echo 'test test test ...
1
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2answers
453 views

Slow/laggy rMBP (mid 2014) - nVidia card not being used?

I have a mid 2014 MBPr & it is very sluggish (2-3 second response times moving between applications/slow chrome rendering) to the point that i did a full re-install of OS (High Sierra) at the ...
4
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0answers
586 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 ...
4
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1answer
12k views

High Sierra Disk Utility problems

I am using High Sierra (10.13.2, all updates in, including the one for Meltdown). When I do one of my regular checks for disk health using the first aid in Disk Utility the whole process is (1) ...
3
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1answer
2k views

MacBook Pro 2017 Geekbench Before and After Spectre and Meltdown Patch

I was just wanting to see the impact on speed due to the patches for the recent Intel CPU Bugs. I have run the update already, but was wondering if someone could run a Geekbench test on macOS 10.13.1 ...
3
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1answer
255 views

Meltdown & Spectre bug & new CPU's

I am thinking to buy a new MB Pro in March. However, the bugs discovered has made me a little bit concerned. I am a software engineer and I am most definitely a "Power User". Apparently, some users, ...
0
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1answer
44 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 ...
4
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1answer
570 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 ...
5
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0answers
267 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 ...
14
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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 "...
3
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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 ...
8
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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,...
0
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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 ...
1
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1answer
29 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 ...