why does safari use so much memory

I like Safari. Iвve used Appleвs web browser for most of my work since it was released, Kirk McElhearn writes for Macworld. I do use Chrome and Firefox for certain tasks, but Safari is my default browser. I like Safari. Iвve used Appleвs web browser for most of my work since it was released, McElhearn writes. But thereвs one thing I donвt like about Safari: itвs a gourmand. Right now, my iMacвs uptime (the time since my last restart) is nearly four days. And Safari is using 6. 81GB of RAM, by far the largest memory hog on my Mac. The app itself is using about 1GB, but each tab, each window also uses RAM. , McElhearn writes.


As I write this, 15 minutes after I said above that Safari was using 6. 81GB, that number has increased to 7. 14GB. And it will continue increasing over time, as long as the same tabs and windows are open. Read more in the full article. We are notorious for bludgeoning Safari our default browsers, too with 20+ tabs open at a time, for long periods of time. That s a main reason why we pack every single one of our Macs to the brim with RAM (and also why we restart Safari so often).
Safari on macOS High Sierra has been found to use much less memory than on previous versions of Apple s desktop operating system, according to Kirk McElhearn.


Using the iStat Menus app to measure RAM consumption under macOS High Sierra, McElhearn ( ) that SafariБs memory usage has dropped Бa great dealБ from earlier macOS releases. БRight now, with my iMac running for more than four days, Safari is only using about 3 GB of RAM. And this with more than a dozen tabs open,Б he wrote. Previously, the browser would be using 5,6, even 8 or 9 GB of memory, McElhearn said. БI would have to quit it every few days to get it to stop being sluggish,Б he added.


I ve noticed the same thing on my mid-2013 MacBook Air with 4GB of RAM. Before macOS High Sierra, Safari would slow down my computer with more than two-dozen tabs open. macOS high Sierra makes my machine noticeable snappier under high load, a much-needed improvement that I chalked up to under-the-hood optimizations. And because any improvement in memory usage makes Safari and the whole computer run faster, this also has a positive effect on battery life. Have you noticed the same thing on your setup? Let us know by posting a comment below.

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