![]() Virtual memory lets the Mac use more RAM than it has, but at the cost of speed, since copying to and from the drive is slow. When memory compression isn’t enough, macOS resorts to virtual memory, which involves copying chunks of inactive data from RAM to disk-based swap files and back as needed, a process called paging. This compression and expansion process uses some processor time, but not so much that you’d usually notice unless you’re running other CPU-intensive apps. When the data is needed again, macOS expands it. It then tasks an underutilized processor core to compress that data in memory in much the same way you can compress a file in the Finder with the File > Compress command. As macOS starts to use up free memory, it looks for chunks of data in memory that are inactive, perhaps due to being used by an app that’s running, but only in the background. Luckily, that’s not a show-stopper, thanks to memory compression and virtual memory. It’s thus easy for macOS, its helper apps, and the apps you run to request more RAM than is actually installed in your Mac. macOS also uses significant quantities of RAM, and it relies on numerous helper apps. Similarly, when you open a document, the app reads its contents into memory in order to manipulate the data quickly. When you launch an app, its code is loaded from disk into RAM for execution. RAM is faster than a hard disk or SSD, but it’s much more expensive and is wiped clean when you restart or shut down your Mac.) What Is RAM Used For? (To make sure we’re all on the same page, RAM and memory are two terms for the same thing, and are distinct from disk space or storage, where files are stored permanently even when your Mac is turned off. Let’s look at how memory is used, how you can determine if you need more, and what to do about it. Also known as random-access memory, RAM is the temporary working space where macOS loads apps and documents while you’re using them. But if these problems are happening more frequently, one possible fix is to install more RAM. ![]() Such problems won’t happen all the time, and you can often fix them by quitting a piggy app or restarting your Mac. No matter how fast your Mac was when it was new, the time will come when apps launch slowly, the spinning beachball appears more often, and everything responds sluggishly. ( local 2.175 >= official 2.140 )( Use -noreleasecheck to avoid this release check.Slow Mac? Here’s How to Figure Out If You Need More RAM Memory consumption at the end : 33949.9 MiB (started with 33666.8 MiB)ĬPU time and %cpu : 1.21 sec 35.4 %cpu 35.4 %allcpus Transfer ended on : dinsdag 21 december 20:16:25 +0100 CET Transfer started on : dinsdag 21 december 20:16:22 +0100 CET Use -delete2 and sync again to delete them and have a strict sync.Įxiting with return value 0 (EX_OK: successful termination) 0/50 nb_errors/max_errors PID 50115 The sync is not strict, there are 61 among 329 identified messages in host2 that are not on host1. The sync looks good, all 268 identified messages in host1 are on host2. Memory consumption at the end : 399394.5 MiB (started with 399339.0 MiB)ĬPU time and %cpu : 0.51 sec 22.7 %cpu 2.3 %allcpusīiggest message transferred : 0 bytes (0.000 KiB) Messages found in host2 not in host1 : 61 messages Messages found in host1 not in host2 : 0 messages Transfer ended on : dinsdag 21 december 20:06:49 +0100 CET Transfer started on : dinsdag 21 december 20:06:46 +0100 CET ( local 2.140 >= official 2.140 )( Use -noreleasecheck to avoid this release check. The sync is strict, all 32585 identified messages in host2 are on host1. There is no unidentified message on host1. The sync is not finished, there are 815 among 33400 identified messages in host1 that are not on host2. ![]() Start difference host2 - host1 : -14265 messages, -5036059133 bytes (-4.690 GiB)įinal difference host2 - host1 : NA messages, NA bytes (NA) Use of uninitialized value in join or string at /opt/homebrew/Cellar/imapsync/2.140/libexec/bin/imapsync line 14136.ĬPU time and %cpu : 58.38 sec 28.0 %cpu 2.8 %allcpusīiggest message transferred : 12731377 bytes (12.142 MiB) Memory consumption at the end : 437732.6 MiB (started with 399476.0 MiB) Messages found in host2 not in host1 : 0 messages Messages found in host1 not in host2 : 815 messages Messages found crossduplicate on host2 : 0 ![]() Transfer ended on : dinsdag 21 december 10:01:02 +0100 CET Transfer started on : dinsdag 21 december 09:57:33 +0100 CET ![]()
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