Questions tagged [memory]

Memory normally refers to RAM. Temporary, high-speed storage used to keep frequently accessed information available for use and helps keep the computer running smoothly

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a1466 2012 Air configure Swap space

I have a 2012 Macbook Air A1466. Had it for a decade now and still haven't gotten a new laptop since! It's probably the best investment I've made. However, it's been slow past few years with newer ...
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How to get memory consumption attributes of a processes in the shell/Terminal as per columns in Activity Monitor?

I have a process that I need to monitor somewhat frequently for growth due to it having a slow leak and the developer being quite unresponsive. (Not important, but since folks ask: This utility is ...
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How to `kill -HUP` apps in macOS 12+?

Long ago it was relatively simple to kill and start some apps and processes in macOS by issuing a killall -HUP PROCESS_NAME. It seemed that most apps and processes respected the -HUP signal, but that'...
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Why is my system running out of application memory when there is plenty of free disk space to swap?

I am running some extremely memory intensive calculations that can balloon to use a great deal of memory for a process (a java program). I have increased the maximum java heap size to 64 GB to allow ...
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How can I see whether or not my M1 Macbook is memory constrained or not?

My Macbook M1 is experiencing severe performance issues at times, but I have hard time finding any hard data that shows what the issue is. htop shows lots of free memory and cpu, yet it seems as if ...
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High memory pressure on M1 MacBook Pro running Monterey 12.1, possible memory leak?

I remember in the first few months the memory pressure never hits red. the lldb started spiking to 2GB+ after I left the mac on sleep while Xcode was open, could that be the reason? Stutters happen ...
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Macbook Air M1 losing functionality for some keys and Siri after a while

I have a Macbook Air with M1 8C8G 16GB and latest macOS version. It's all good, really great laptop and I love it but I have this problem of some function keys stopping functioning after a while up ...
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Mac OS Terminal and Trash bin not working

Faced a problem using my MacBook Air 13 2017. I ran out of space (500mb free now). I tried to empty the trash bin, but it says that is not possible because there is no memory O_o. Having heard that it ...
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What is the Apple equivalent of the Linux kernel argument memtest?

Linux has a kernel argument memtest: Specifies the number of memtest passes to be performed. Each pass selects another test pattern from a given set of patterns. Memtest fills the memory with this ...
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Am I wearing down my internal SSDs quickly or is it more likely they're wearing out naturally?

A few days ago I learned that my internal SSD is failing. I have a a MacBook Pro (Retina, 13-inch, Early 2015) running Big Sur, and my hard drive is an APPLE SSD SM0256G. I got the laptop in 2017 and ...
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Rectangular shape boxes with Green Vertical Lines in it

All of sudden, while I was working, my screen got frozen and started showing some rectangular shape boxes with green vertical lines in it. For the first time, when I pressed on power button, it ...
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Macbook Pro does not recognize 2 8Gb RAM upgrade

I have a 13-inch Macbook Pro (mid-2011, running High Sierra 10.13.6), boot ROM MBP91.00D3.BOC. Successfully replaced HDD with SSD. Wanted to upgrade RAM to 16Gb using 2 8Gb DDR3 A-Tech PC3-10600-DIM ...
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Why is htop and Activity Monitor showing different even when running htop as sudo?

I have installed htop using homebrew on an M1 Macbook Air. Below, one can see that the used memory reported by htop and Activity Monitor are different. I am aware of other answers in this website ...
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High memory pressure Catalina Macbook Pro causing freezing?

My Macbook Pro has been running with really high memory recently, I think it might be what's caused the whole system to freeze 2 or 3 times over the last couple of weeks. I'll have a bunch of apps ...
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Continuous chime after RAM upgrade on Middle 2011 MAC Mini

Good afternoon. I have a Mac Mini, which came with a 2 Gb 1333 MHz PC3-10600 DDR3 SO-DIMMs but I already tried to upgrade with 2 kits: Timetec 8GB KIT(2x4GB) Compatible for Apple DDR3 1333MHz PC3-...
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Memory Pressure in yellow with new MacBook Pro M1 Pro (14 inch / 16GB RAM )

I recently purchased a new MacBook Pro 14 inch model (16GB RAM and 8 core CPU). The new laptop is running just fine. It's super fast. However, memory pressure is usually in the yellow. On my old ...
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macOS showing extremely high virtual memory usage for every process (in htop and top)

I am not even 100% sure if this is an issue, because htop on macOS is known to show very high virtual memory usage. However, I never noticed VIRT values that were so consistently high before, and I ...
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My MacBook Pro (2019) background keeps going black every 4-7 seconds

My MacBook pro background keeps going black every 4-7 seconds. When it goes black, the dock at the bottom slides out and then slides back up when the screen goes to the regular background. Something ...
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iStat Menus vs Activity Monitor Memory Reporting

iStat Menus is reporting 16 GB of used memory but Activity Monitor is reporting 23 GB used. Who is telling the truth? Why are these apps reporting different values? MacBook Pro 14" 32 GB ...
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How to keep /private/tmp on a RAM drive with Big Sur & Monterrey+?

How do you setup /private/tmp on a RAM drive with Big Sur & Monterrey+? I will explain some of my concerns here below, but my question is simply that. Apparently some have misunderstood and ...
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iMac Retina 5K 27-inch 2020 RAM Upgrade comatibility

I would like to update my RAM from 40 Gb to 96 Gb I have a iMac Retina 5K 27-inch 2020 running BigSur 11.6 with the following RAM: Slot1: Kingston KCP426SD8/16 16GB Slot2: Micron 4ATF51264HZ-2G6E3 ...
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My MacBook Pro (2010) beeps 3 times and not starting up

I love this Macbook and I know its still in good condition. 3 beeps on start up and keeps beeping 3 times. Can start it up. Tried the press Command Option PR and turn on. didnt work. some were saying ...
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Virtualized Windows memory speed on M1

I run Windows 10 on i9 MBP through Parallels and I see memory speed stuck at 667MHz. How it is on M1 macs, also 667?
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iMac (Retina 5K, 27-inch 2020) RAM Upgrade

I purchased and installed 4x32GB of RAM (OWC2666DR4S128S) in my iMac (Retina 5K, 27-inch 2020) RAM. It works. I noticed that neither Manufacturer nor Part Number are detected when I inspect and ...
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Memory bandwidth up to 200GB/s and 400GB/s for m1pro and m1max: how to calculate it? And how does different choices of specs affect it? [duplicate]

I'm considering buying a new M1pro or M1max and plans to use it for 6~8 years. However, I'm confused by the memory bandwidth part. Is it a theoretical value solely based on different chipset? i.e. ...
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High windowserver memory usage (6GB+) on MacOS

I've got the 16GB M1 MacBook Pro and windowserver is using huge ammounts of RAM, meaning that my swap is over 3GB. Is this normal behaviour, I don't have any external displays connected and it's ...
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Safely increase the stack size to a big amount in Mac

I'm using Mac 11.6 with memory 16 GB 2133 MHz LPDDR3. I have coded a program in OCaml whose compilation caused Fatal error: exception Stack overflow, I thus wanted to raise the stack size of ...
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Memory bandwidth (200GB/s vs 400GB/s) on a M1X Macbook Pro: usage scenarios where it makes difference?

I'm struggling to choose between M1max and M1pro for my MacBook 2021. The only difference that could be relevant for me is 2x memory bandwidth. Are there any real-world usage scenarios where 200GB/s ...
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What are the performance implications of unified (vs non unified) memory? [duplicate]

When seeing the term "unified memory" in the new MacBook Pro copy1, I cannot determine what impact it will have on day to day use of the device, save for an educated guess that it will make ...
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MacBook Pro 2019 13" RAM upgrade

My MackBook specifications are shown in the screenshot below: I would like to upgrade my MacBook RAM from 8GB to 16GB. I have looked to apple spec related to my type of MacBook that I find at this ...
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Help me avoid my memories from "going away"; how to "add ALL" to favorite memories rather than one at a time?

I'm just starting to realize what macOS Photos is doing with memories. Apparently I have quite a lot of them already now! Is there a way I can "add ALL to favorite memories" to avoid them ...
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Can I install PC3-12800 RAM into an iMac with PC3-10600 slots?

Also, is it ok to mix these? Like having 2x4 GBs of 10600 in two slots and 12800 in the other two?
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6 votes
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Track memory usage over a long period of time

I own a 2019 Macbook Pro with 16GB of RAM for software development. Previously I used a MBP with 32GB of RAM, and now I feel that sometimes the 16GB MBP hits the ceiling when running multiple things ...
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Checking detailed parameters of hardware - like RAM CAS latency

In Windows one can find free apps like CPUID (CPU-Z) and others who help get a lot of information about installed hardware. I was looking for something similar for macOS, but couldn't find anything ...
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2020 MacBook Air not loading webpages when connected to WiFi

My friend's 2020 MacBook Air 13" (running macOS Big Sur 11.5.2) is connecting to WiFi, and successfully pings via the terminal, but any apps, mac help, and safari cannot access the internet. It ...
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Why does doing math in spotlight use extreme high amounts of CPU + memory?

I often use Spotlight as a easy access calculator but recently I noticed that doing so consumes an EXTREMELY large amount of CPU and memory, as seen in the spotlight process corespotlightd. Basically ...
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Problem with 1.33 GB hard drive and Disk Utility on Macbook Air 11 2015 a1465

I have a Macbook Air 11 2015 a1465 (Apple A1465 MacBook Air 11 "(Early 2015) (i5-5250U | 4GB | 128SSD)). Deleted the hard drive via Disk Utility. In the process, some unplanned process took place....
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Why does my Mac keep telling me I have run out of application memory? How do I make it stop? [duplicate]

If I open just a few applications on my Mac I get a pop-up that looks like this: I still have plenty of RAM left so do you know why my Mac keeps giving me this pop-up? Do you know how to fix it?
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Does macOS automatically erase freed memory (to prevent leakage of information left in freed memory)?

I am involved in both macOS and Linux. Linux automatically erases every freed memory in order to prevent leakage of information left in freed memory, and also to prevent attacks that seek or rely on ...
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How does one fix the insufficient memory error in uploading to Apple Books?

I am running Big Sur 11.5.1. Occasionally when uploading non-Apple ebooks, I get a message that there's insufficient iCloud storage. In fact, I have 150Gb free on my iCloud account. Searching via ...
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1 vote
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Can the hard drive on MacBook Pro (Retina, 13-inch, Mid 2014) be replaced to bigger size

I currently have a MacBook Pro (Retina, 13-inch, Mid 2014, 2.6 GHz Intel Core i5, 8 GB 1600 MHz DDR3). The current internal drive is 128 GB SSD, but I need a bigger internal drive. I have contacted a ...
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1 vote
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Is there a memory leak in macOS Monterey

I have updated to macOS Montery Beta 12.0 (21A5294g) and after some time the macOS always runs out of memory and I get the "Your system has run out of memory" window. The screenshot below is ...
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Mac Pro 5,1 Mid 2010 RAM Slots

I have just bought 2x16GB ram. I have 4 slots with 8gb in each. I will fit the new 2x16 in slots 1 + 2 (4 slots total). Is that correct?
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msd_stores consuming twice the amount of memory than I have available on my mac

There's only 16Gb of RAM on this computer (quad-core 15" Macbook Pro) but Activity Monitor is saying mds_store is using 32Gb. Rendering in Sublime and Brave browser when I scroll and type was ...
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MacBook Pro Fin 2008 10.10 Upgrade issue

I have Mac Pro 17 Inch running 10.10 Yosemite OS, I've made some Hardware changes such as replacing HDD with SSD and increasing RAM slots, moreover, I'd like to upgrade from 10.10 Yosemite to 10.11 El ...
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2 votes
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Is there a command line tool that accurately describes the amount of used memory?

By "accurately describes the amount of used memory", I mean does it report (or can it be calculated) the same amount of memory use as described in Activity Monitor? My intent is to find a ...
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1 vote
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"Your system has run out of application memory." chrome using over 100 gb

My computer was being very slow and then I got an error that my system is running out of application memory. But I was surprised to see chrome using 114 GB not MB of application memory. Is this ...
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Where does Safari save recently closed tabs?

When I force the immediate exit of Safari with open tabs, then restart Safari, this message appears: Safari was last opened when opening Windows terminated immediately. Do you want try to open the ...
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Apple music won't open. High Memory usage

Apple music does not open. Is there a way I can 'reinstall' or fix it? The memory usage jumps too high. I am left with no option but to force quit it
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RAM freezes and crashes my iMac after upgrade to iMac late 2015

Recently I purchased 2 RAM carriers from a local supplier: Micron Memory Upgrade 8GB 1867MHZ DDR3 SO-DIMM PC3L-14900S (8GBx2) I wanted to upgrade from my current 8GB to 24GB. However, a few days after ...
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