Swap used but no page outs

What would cause OS X, Mountain Lion in this case but I believe I've seen this in previous versions as well, to use swap space but not to page out?
See:
Its been a while since I've had to delve into the whys and wherefores of memmory managment and paging systems.
thanks

Thanks for that, it was a good vm refresher.
However after giving the doc a quick read I didn't see any mention of OS X use of swap vs. paging. Unless the term has changed meaning when a process was swapped its entire memory footprint was written out to disk. Now if my memory was all used up and I started a new program I could see the need to swap out an existing program to make room (but even this case, at least as I remember it the paging system would be used)
So my question still is open, what causes OS X to swap rather then page when there is memory available and what does OS X even mean by swapping?
thanks
Message was edited by: Frank Caggiano - looking at the Activity Monitor page on the Apple site isn;t any help. They state:
Swap used:
This is the amount of information copied to the swap file on the Mac's drive.

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Performance problem , 100 % swap used, but vmstat - sr = 0

Hi,
I have a performance problem on a server. It is sometimes very low during several hours.
context : v890, 32 Go RAM, 8 SPARC IV+, solaris 10 release 03/05, veritas volume manager, containers, several oracle databases, applications...
with iostat, swap partition : %b -> 100% !!!!
with vmstat, r-> 0, b -> 0, w ->29, free memory : 600 Mo , sr -> 0, idle : more than 50%,
uptime, load average : 6
vmstat -S : si -> 0 , so -> 0
vmstat -p : api -> 45126682863 ( probably a bug ) , apo -> 0 fpi -> 1895320681342 ( probably a bug ), fpo -> 0
It's difficult to me to find the problem. Is it paging activity ??? someone can tell me, what is the memory limit for paging activity start ?
If you thing I'm in the wrong way, thanks for all ideas :)
Julien
Edited by: Wylem on Feb 28, 2008 6:11 PM

Does seem a bit odd.
The 'w' column doesn't necessarily mean that anything bad is happening now, but it does mean that the system was severely memory limited at some point in the past at least.
Paging should occur when free memory drops below LOTSFREE. I don't remember if swapping happens at a particular point, but probably wouldn't happen above DESFREE. The page scanner should become active (non-zero 'sr' numbers) any time the memory is below LOTSFREE.
Since you have Solaris 10, you might want to grab the dtrace toolkit and see if some of the tools in there show you anything more useful (some of the I/O ones might break down the access further).
So it really doesn't look like you're swapping/paging out anything now, but you almost certainly did in the past. It could be that you're using an app that has paged out a lot of stuff do disk, so that the I/O you're seeing is it bringing stuff back now that RAM is available.
Darren

Page outs is TWO to THREE TIMES page ins

Have been having much trouble with a slow Macbook and have been reading on this forum for solutions. Please know that I have little understanding of any of this stuff although I do know enough to check Activity Monitor---and my page outs can be 2 to 3 times my page ins. Isn't that really unusual? Is my little Macbook in serious trouble? The spinning beachball and slowness happen usually after I've been using Safari for quite awhile, particularly with lots of tabs and images; if my Trend Microsecurity then decides to update itself, I might as well shut the computer off for the remainder of the night. This is what just happened this afternoon---I got on Safari for the first time today, watched one short video clip, then CRASH---couldn't do anything with any other program or window---then noticed that Trend Micro was updating. I ran Etrecheck at that time (took forever) and then like an idiot somehow lost that log before I could get to this forum. But the page outs were MUCH larger than page ins. Last night when this happened, page outs were 2.85gb and ins were 898.9mb. One reason I'm confused is because Best Buy's "Apple guy" said I didn't need any RAM.
I'm including the Etrecheck I just ran but things have settled down now so I'm not sure it's telling the whole picture:
Hardware Information:
          MacBook (13-inch, Mid 2010)
          MacBook - model: MacBook7,1
          1 2.4 GHz Intel Core 2 Duo CPU: 2 cores
          2 GB RAM
Video Information:
          NVIDIA GeForce 320M - VRAM: 256 MB
System Software:
          Mac OS X 10.6.8 (10K549) - Uptime: 0 days 1:55:41
Disk Information:
          Hitachi HTS545025B9SA02 disk0 : (232.89 GB)
                    (null) (disk0s1) <not mounted>: 200 MB
                    Macintosh HD (disk0s2) /: 232.57 GB (149.81 GB free)
          MATSHITADVD-R   UJ-898
USB Information:
          Apple Inc. Built-in iSight
          Western Digital External HDD 149.05 GB
                    (null) (disk1s1) <not mounted>: 200 MB
                    Time Machine Backups (disk1s2) /Volumes/Time Machine Backups: 148.73 GB (40.71 GB free)
          Apple Inc. BRCM2070 Hub
                    Apple Inc. Bluetooth USB Host Controller
          Apple Inc. Apple Internal Keyboard / Trackpad
FireWire Information:
Thunderbolt Information:
Kernel Extensions:
          com.trendmicro.kext.KERedirect          (1.0.0)
          com.trendmicro.kext.filehook          (1.5.0)
Problem System Launch Daemons:
          [failed] com.apple.suhelperd.plist
          [not loaded] org.samba.winbindd.plist
Problem System Launch Agents:
          [failed] com.apple.Kerberos.renew.plist
Launch Daemons:
          [loaded] com.adobe.fpsaud.plist
          [loaded] com.trendmicro.icore.av.plist
          [loaded] com.trendmicro.icore.main.plist
          [loaded] com.trendmicro.icore.wp.plist
          [loaded] com.trendmicro.tmsm.launcher.plist
          [loaded] com.trendmicro.tmsm.plugin.plist
Launch Agents:
User Launch Agents:
          [loaded] com.google.keystone.agent.plist
          [not loaded] jp.co.canon.Inkjet_Extended_Survey_Agent.plist
User Login Items:
          iTunesHelper
          WeatherBug Alert
          Canon IJ Network Scanner Selector2
          BitTorrent
          Canon IJ Network Scanner Selector EX
          TmLoginMgr
3rd Party Preference Panes:
          Flash Player
          Flip4Mac WMV
          handyPrint
          MacFUSE
Internet Plug-ins::
          Flip4Mac WMV Plugin: Version: 2.3.8.1
          FlashPlayer-10.6: Version: 12.0.0.44 - SDK 10.6
          EPPEX Plugin: Version: 3.0.5.0
          Flash Player: Version: 12.0.0.44 - SDK 10.6
          JavaAppletPlugin: Version: 13.9.8 - SDK 10.6 Outdated! Update
          QuickTime Plugin: Version: 7.6.6
          GarminGpsControl: Version: 4.0.4.0 Release - SDK 10.6
          Silverlight: Version: 5.1.20913.0 - SDK 10.6
          iPhotoPhotocast: Version: 7.0
Bad Fonts:
          None
Old applications:
          Kindle:          Version: 1.8.3 - SDK 10.0
                    /Applications/Kindle.app
Time Machine:
          Information not available
Top Processes by CPU:
              10%          locationd
               6%          iCoreService_av
               5%          WindowServer
               3%          EtreCheck
               1%          coreservicesd
Top Processes by Memory:
          221 MB          WebProcess
          125 MB          Safari
          86 MB          mds
          47 MB          iCoreService_av
          45 MB          Mail
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          451 MB          Free RAM
          809 MB          Active RAM
          275 MB          Inactive RAM
          256 MB          Wired RAM
          923 MB          Page-ins
          1.50 GB          Page-outs
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> It's OK to have 8 gb if I still use Snow Leopard? That site said that OS 7 is required for anything over 8 gb
If you have 8 GB in a 2 x 4 GB configuration you can still run Snow Leopard.
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Every time I use the internet the pages keep reloading every 10-20 seconds. worked with my internet provider for over a year thinking it was their fault, but it turns out it's my computer. Can anybody help? Thanks.

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Page Outs and Swap Used

I'm considering adding more memory to my system.
I currently have 10 GB. I'm not sure how what to expand to.
I'm wondering what Page outs and Swap used means in Activity Monitor.
I just recelty looked at it and it shows:
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Page ins: 10.54 GB
Page outs: 336 KB
Swap used: 488 KB
Free: 3.91 GB
Although, prior to checking, I had been running Photoshop.
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Is that correct? As I'm not certian what these memory stats mean in Activity Monitor.

The free indicator is an instantaneous indication of how much was free at the instant you looked.
The pageouts counter is an incrementing counter that starts from 0 at startup and goes up when pageouts occur, and does not go down until you restart.
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OS 10.8.5 on iMac grinding to a halt - fairly usual CPU but up to 7GB Page outs after starting Safari (I think)

Hi
I'm running OS 10.8.5 on an iMac (early 2009, 4GB memory), which has been running fine up until today:
Applications started becoming very unresponsive, and eventually beach balled until it became unusable. Restarts didnt cure it.
Having looked in the Activity Monitor from suggestions in discussions here, the System Memory 'Page Outs' seemed high, at 7GB
For a while, if I didnt run Safari, it seemed to stay at 0
Once I've run Safari, the Page Outs keep climbing, even when Safari is closed
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Many thanks in advance

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You have a long-running process with a memory leak (i.e., a bug), or
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Tracking down a memory leak can be difficult, and it may come down to a process of elimination.
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View ▹ Columns ▹ Real Memory
from the menu bar.
If one process (excluding "kernel_task") is using much more memory than all the others, that could be an indication of a leak. A better indication would be a process that continually grabs more and more real memory over time without ever releasing it. Here is an example of how it's done.
The process named "Safari Web Content" renders web pages for Safari and other applications. It uses a lot of memory and may leak if certain Safari extensions or third-party web plugins are installed. Consider it a prime suspect.
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My MacBook (late 2009 Mac OS X Lion 10.7.5 (11G63) often runs VERY slow...beach ball of death frequently. My page ins (5.29GB), page outs (5.64BG), and swap files (10GB) seem extremely high in comparison to most other discussions in here. HELP!!??

My MacBook (late 2009 Mac OS X Lion 10.7.5 (11G63) often runs VERY slow...beach ball of death frequently. My page ins (3.29GB), page outs (5.64BG), and swap files (10GB) seem extremely high in comparison to most other discussions in here. I don't know how to copy the pie chart so it shows on here but here's what it says right now:
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Wired - 592MB
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The page ins and page outs have 0 bytes/sec in the parenthesis even though the numbers are so high.
Any help anyone could provide would be greatly appreciated!!!

You difinately need more ram. 2gb is the bare minimum to run just the Lion OS, anything extra will slow your Mac to a crawl. Upgrade to 8gb from either Crucial http://www.crucial.com/ or OWC http://eshop.macsales.com/
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I have my machine reimaged, now when I try to preview an rtf template I get the below error. Nothing has changed in my template and I am using 1.0.0 Build 9 as before my reimage as well. This is an uregent problem that I am not able to find the solution for on my own. Please advise with any help.
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I'm just new to XMLP and am receiving the same error.. My error is occuring when trying to use sub-templates in my master template.
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