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Leopard Virtual memory
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Forum Regular
Join Date: Aug 2002
Location: London
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Since I have upgraded to Leopard I have noticed that my Hard Drive has been rather full. I always had plenty space before. On investigation I have noticed that my Virtual memory usage has gone way up.
My memory statistics from Activity Monitor are:
Free: 663.88MB
Wired: 220.59MB
Active: 606.12MB
Inactive: 558.13 MB
Used: 1.35GB
VM Size: 48.58GB
Page Ins: 881.44MB
Page Outs: 564KB
Swap Used: 25.08MB
Total RAM 2.0GB
Leopard is running well but I can hardly believe that almost half my Hard Drive is running the VM for my machine. At this moment I am not running any of CS3 but just the essentials and Pages. I am really glad I got the 120GB Hard drive upgrade two years ago when I got this machine. Will some of these VM sizes be toned down when my data storage increases or will I just run out?
I really wonder what the people with 80GB HDs are doing?
My Specs are PBG4 1.67GHz Hi-Res 2GB RAM/120GB HD
Look forward to your input/comments
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David.
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Professional Poster
Join Date: Sep 2002
Location: New York, NY
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Swap is the number that you need to be looking at. You only have 25.08MB of Swap on your hard drive. Virtual Memory is virtual. It is not using 48+GB of your hard drive.
You need to look elsewhere for your hard drive usage. Keep in mind that Leopard is a lot bigger OS than Tiger, especially if you kept the default install options.
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Vandelay Industries
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Professional Poster
Join Date: May 2007
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Why does Virtual Mem Size fluctuate, then, if it's "Virtual?"
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Professional Poster
Join Date: Sep 2002
Location: New York, NY
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Because the number of processes running fluctuates. Each process is allocated an amount of Virtual Memory.
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Vandelay Industries
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Join Date: May 2007
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Oh... That makes sense now
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Professional Poster
Join Date: Sep 2002
Location: New York, NY
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And just to prove to any doubters that VM isn't actually allocated onto the disk...
I have 40.55GB of Virtual Memory allocated. My hard drive only has 28.26GB on it.
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Vandelay Industries
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Forum Regular
Join Date: Feb 2007
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HOWEVER, I have noticed that my amount of page outs have increased noticeably since upgrading to Leopard. Anyone else?
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Professional Poster
Join Date: Sep 2002
Location: New York, NY
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I haven't but it's not surprising considering that Leopard is a more demanding OS.
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Vandelay Industries
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Forum Regular
Join Date: Aug 2002
Location: London
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oh well-back to the hunt for the missing 10GB.
Thanks for the input
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David.
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Posting Junkie
Join Date: Nov 2000
Location: in front of my Mac
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Try out WhatSize (it's free). It should make it very easy for you to find what's eating up your disk.
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Forum Regular
Join Date: Oct 2000
Location: Raleigh, NC, USA
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Originally Posted by ~bash $
HOWEVER, I have noticed that my amount of page outs have increased noticeably since upgrading to Leopard. Anyone else?
SIGNIFICANTY more page outs. With Tiger 512MB was just fine for what I do (web programming). However with Leopard my Mac is barely usable. It seems like the longer I go without rebooting, the worse it gets. In fact, if the computer has been running for a day, Mac OS X will swap with only one or two applications open.
I think it's a bug, to be honest with you.
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Professional Poster
Join Date: Sep 2005
Location: Rochester, NY
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I don't have any hard evidence for this (I don't have my Mac at work), but I just got a new MacBook, and it's nice and fast, except when switching between apps. I suspect that Leopard is eating lots and lots of RAM, and 1GB just ain't gonna cut it. I have two 2GB sticks on order, so we'll see how much faster it is then.
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Professional Poster
Join Date: Jun 2001
Location: Northwest Ohio
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Originally Posted by JustinHoMi
SIGNIFICANTY more page outs. With Tiger 512MB was just fine for what I do (web programming). However with Leopard my Mac is barely usable. It seems like the longer I go without rebooting, the worse it gets. In fact, if the computer has been running for a day, Mac OS X will swap with only one or two applications open.
I think it's a bug, to be honest with you.
Nope, not a bug. Leopard requires more resources. 512 MB is the absolute minimum required, according to Apple's listed specs. Tiger's minimum was 256 MB, and even at 256 MB Tiger ran like ass. Panther's minimum was 128 MB.
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Mac Elite
Join Date: Aug 2001
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I get many less pageouts on Leopard than I did in Tiger. Previously whenever I hit 1400-1500MB active, I'd get paging. Now it's more like 1700-1800 before much paging activity starts, which I rarely hit.
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Clinically Insane
Join Date: Oct 2001
Location: San Diego, CA, USA
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I haven't noticed more pageouts in general.
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Chuck
___
"Instead of either 'multi-talented' or 'multitalented' use 'bisexual'."
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Dedicated MacNNer
Join Date: Feb 2001
Location: Victoria, BC, Canada
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I'm finding that leopard tends to use much less real memory while using more virtual memory. I have only had a few pageouts and from what I have seen my overall memory usage seems to have gone down.
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Posting Junkie
Join Date: Nov 2000
Location: in front of my Mac
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I have not noticed more pageouts. But I have certainly noticed more active memory being used. It's up by roughly 200 MB here.
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Professional Poster
Join Date: Sep 2005
Location: Rochester, NY
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My gut feeling is that Leopard is more efficient with virtual memory, but uses more memory. I'm expecting that the people who are not seeing more pageouts have more than 1 GB installed, because I'm seeing a ton. (Mostly when launching Civ 4. ) However, I am anticipating that the days of 10 to 20 GB Swap Files are in the past. (I regularly saw swap files that big on Tiger.)
The low-end Macs will be hardest hit, since they are also using System Memory for video. And since the new MacBooks (like mine) have the new integrated graphics chip which is using more System Memory than the GMA950, they'll be even worse. I think I'll try my MacBook with just one 2GB stick in it for a while, to see if that's enough ot stop the paging I'm seeing.
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Professional Poster
Join Date: Mar 2000
Location: New York, NY, USA
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Originally Posted by Dork.
My gut feeling is that Leopard is more efficient with virtual memory, but uses more memory. I'm expecting that the people who are not seeing more pageouts have more than 1 GB installed, because I'm seeing a ton. (Mostly when launching Civ 4. ) However, I am anticipating that the days of 10 to 20 GB Swap Files are in the past. (I regularly saw swap files that big on Tiger.)
I'm seeing my machine use about 100 more MB for wired memory than under 10.4.x.
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The era of anthropomorphizing hardware is over.
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