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
Member since:
2006-07-14

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

Reply Score: 2

No it isnt Member since:
2005-11-14

"Always seemed better"? It needs more memory than pretty much any other OS just to boot from disk, and takes more time to chew swap as well.

Reply Parent Score: 4

Bill Shooter of Bul Member since:
2006-07-14

I don't judge operating system performance by Minimum Required specs.

I managed to get windows XP to run on a Cyrix M2 running at ~250 mHz and with only 64 mb of ram, but I wouldn't say that makes it better than at memory management than windows 7.

Reply Parent Score: 2

BlackV Member since:
2012-04-23

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.

It is not, I'm not using Time Machine, yet I'm hit by that issue and I'm not alone here:

https://discussions.apple.com/thread/3193912?start=0&tstart=0

Reply Parent Score: 2

Bill Shooter of Bul Member since:
2006-07-14

Interesting. I'm using number of more intensive programs than that with the same amount of memory, but not running into any issues on Lion. But, I don't use mail or safari. Don't know why, maybe I'm just lucky.

Edit:

Read more of that post. It seems to be a memory leak in Safari. Which explains perfectly why I haven't run into it. I really don't know why anyone uses safari. Its molasses compared to Chrome/chromium.

Edited 2012-04-23 21:20 UTC

Reply Parent Score: 2