Linked by Thom Holwerda on Mon 23rd Apr 2012 16:29 UTC
Mac OS X Adam Fields and Perry Metzger have been investigating the serious performance issues people are experiencing with Lion. "Frequent beachballs, general overall slowness and poor UI responsivness, specific and drastic slowdowns on every Time Machine run, high memory utilization in Safari Web Content, mds, and kernel_task processes, large numbers of page outs even with a good deal of available RAM, and high amounts of RAM marked as inactive which is not readily freed back to other applications, with page outs favored." Apparently the issue is that the "virtual memory manager is bad at managing which pages should be freed from the inactive state and which ones should be paged out to disk". I won't make myself popular with a certain part of our readership, but really, is this considered a new problem? Mac OS X has always had terrible memory management, and where Windows has continuously become better at it, Mac OS X seems to have been stagnant and even getting worse. This is what happens when the company earns 2/3s of its revenue somewhere else.
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Bill Shooter of Bul
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OS X has always seemed to be better than just about anything at handling memory, in my non scientific experience.

Safari does seem to be terrible and using and freeing memory, which is why I don't use safari on macs. But that's about all I've noticed. I only play with a friends Windows 7 laptop from time to time, which is only rebooted when necessary for installs/updates. It seems just as good as the mac, which is a huge improvement over how bad XP was. I might have a different opinion if I abused it as much as I do my other operating systems,but it seems to be good.

Edit: after reading the article, it seems like its tied in to the disk thrashing that Time Machine does. I don't use time machine, preferring to just rsync my backups to a spare server.

Edited 2012-04-23 17:52 UTC

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