![]() ![]() Basically, when you open a same task again and again, it will re-open very fast by loading the cache files.Īpp Cache: App cache are produced by apps and system or third party applications to save temporary information such as websites that are visited in your favorite browser to speed up the loading process. However, cache performs a critical function by creating a shortcut to the task that you have already performed in the system. ![]() System Cache: It's produced in a device whenever an app, browser, the system performs any task and the any built-in system services that run your Mac's OS. One possibility is that you had an app or OS process that misbehaved, creating a lot of caches on disk, these then got loaded on app/process startup, causing a lot of memory use, resulting in a lot of VM swapping.If you have been using Mac from a long time that you may know that OS X saves a ton of cache files on the hard disk. ![]() My ~/Library/Cache folder is only 5GB which seems much more sane, though this obviously depends on the apps one uses. You also seem to have had an excessive amount of caches, which probably was caused by some misbehaving app. ![]() My best guess is that some cache got corrupted and cause macOS (or some app) to misbehave. Well written apps usually run these kind of activities in the background, on another app thread, to avoid blocking the user from doing other stuff. But it could also be that the app is waiting for some other reason, perhaps for data from the network. The most common cause for this is a lot of Virtual Memory swapping (High Memory Pressure in Activity Monitor). The spinning wheel of death appears if the current app hasn't responded to user input for 2+ seconds. The amount of cache shouldn't really affect your performance. ![]()
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