Move swap file mac os x

RAM paging is one of the oldest memory management methods in existence. Mainframe computers from the s were already using it!

It made a lot of sense when RAM was measured in dozens of kilobytes. These days most mainstream computers have way more RAM than the user is likely to need unless they routinely run memory-hungry applications.

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Given that your computer has the right amount of RAM, there may still come a day when something makes RAM paging necessary. One of the most common pieces of advice is to set your page file to a different drive than your operating system drive. The thing is, most new computers have a solid state drive SSD as their primary disk these days. While SSDs using the SATA interface still have to queue read and write requests sequentially, they are orders of magnitude faster than mechanical drives with spinning platters.

The logic behind this makes sense, since hard drives have to queue requests for reads and writes. So if Windows is trying to swap information from your page file and also trying to use the disk for other purposes it will all slow down to a crawl. If you put your page file on a separate hard drive, then this problem goes away. On mechanical hard drives, fragmentation can also be an issue. Files are not stored continuously, but written into any available gaps left by deleted files. This means that over time as files are written and deleted, a specific file might exist in bits and pieces all over the drive.

Size of physical memory in bytes plus swap files? Thanks for the article. Can anyone tell me if we can delete previous swapfiles? It will barely make a difference on the life of your SSD, and Mac OS does much better when you allow it to use swap space as it wishes. Name required. Mail will not be published required. All Rights Reserved. Reproduction without explicit permission is prohibited.

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August 10, at pm. John R says:. May 14, at pm. Vencil says:.

How To Optimize The Paging File In Windows

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Move your swap file to another drive - Mac OS X Hints

August 10, at am. Ken says:. June 8, at am. December 26, at am. November 17, at am. November 15, at pm. November 5, at am. Mac Buff says:. October 14, at am. Mac N Cheese says:. December 5, at pm. October 10, at pm. I made a copy of the original file and opened it with Apple's Property List Editor available with Xcode in order to make changes, but this process added some extended attributes to the plist file which caused the system to ignore it and just use the defaults.

As dblu pointed out, using plutil to convert the file to plain XML works like a charm. If you see the following lines repeated over and over again, there is a problem with the setup. I ran into these messages because I forgot to create the '. When everything is working properly, you may see the above message a couple of times only, and then no more of the "Throttling respawn" messages. This means that the system did have to wait for the partition to load, but in the end it was successful.

In OS X Use mdutil. Example, to switch off then erase the store:. I have been unable to establish a permanent system boot solution, since Use for example Tinker Tool System to let volumes mount before log-in, that solves the only problem I encountered. Thanks Filippo, I can finally move the swap from the mirrored boot volume to a striped cache volume all SSD.

Listen now. Home Questions Tags Users Unanswered. How can I move virtual memory swap files to a different drive or partition? Ask Question. Asked 9 years, 1 month ago. Active 4 years, 5 months ago.

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