Larger Swap memory than compressed in Mavericks 10.9.3

I bought MBP about 3 weeks ago and had an update to Mavericks 10.9.3 a few days ago.
I am not sure if this problem started after the update, but I had never seen any "Swap Used" at least before the update.
Now, if you look at the screenshot below, which is my current memory status, there is always a certain amount of Swap Used, and the amount is always larger / comparable to that of "Compressed" memory.
I have never seen that my memory pressure goes to yellow or red, and I am not a heavy user either.
Also, I have not felt any slow down of my mac yet.
To my understanding, Mavericks is made to compress as much as possible before it starts to swap the memory with hard disks. But it seems like mine does not work in that way for some reason now.
The link below provides an enlightening explanation on how Mavericks manages its RAM. In the test done in the article, you can notice that the Mavericks compresses more than 8 GB before it actually starts the swap process under a heavy load.
http://arstechnica.com/apple/2013/10/os-x-10-9/17/
So, what did happen to my Mavericks? Why is it using the swap before it compresses more, leading to more Swap Used than Compressed?
Any thoughts?
Thanks,

I would not be concerned about such tiny amounts of Ram

Similar Messages

Always larger Swap memory than compressed in Mavericks 10.9.3

I bought MBP about 3 weeks ago and had an update to Mavericks 10.9.3 a few days ago.
I am not sure if this problem started after the update, but I had never seen any "Swap Used" at least before the update.
Now, if you look at the screenshot below, which is my current memory status, there is always a certain amount of Swap Used, and the amount is always larger / comparable to that of "Compressed" memory.
I have never seen that my memory pressure goes to yellow or red, and I am not a heavy user either.
Also, I have not felt any slow down of my mac yet.
To my understanding, Mavericks is made to compress as much as possible before it starts to swap the memory with hard disks. But it seems like mine does not work in that way for some reason now.
The link below provides an enlightening explanation on how Mavericks manages its RAM. In the test done in the article, you can notice that the Mavericks compresses more than 8 GB before it actually starts the swap process under a heavy load.
http://arstechnica.com/apple/2013/10/os-x-10-9/17/
So, what did happen to my Mavericks? Why is it using the swap before it compresses more, leading to more Swap Used than Compressed?
Any thoughts?
Thanks,

I would not be concerned about such tiny amounts of Ram

Swap memory

Hi,
Version :10.2.0.1 and 11.2.0.1
Os :Aix 5/6
We often getting swap issues.It reached 95%.we have 120GB real memory and 45 GB swap space.The db size is 2.5TB.Some time the db went to hang state and we restarted the db.
DB level
Is it possible to find A QUERY which memory using whether real memory or swap memory?How much amount from it?
OS level
Is it possible to find how much memory A PROCESS using from real memory and swap memory?
Thanks.

922884 wrote:
Hi,
Version :10.2.0.1 and 11.2.0.1
Os :Aix 5/6
We often getting swap issues.It reached 95%.we have 120GB real memory and 45 GB swap space.The db size is 2.5TB.Some time the db went to hang state and we restarted the db.
DB level
Is it possible to find A QUERY which memory using whether real memory or swap memory?How much amount from it?
OS level
Is it possible to find how much memory A PROCESS using from real memory and swap memory?
Thanks.SWAP is an OS operation & Oracle has NO knowledge about it.
OS moves "idle" processes to free up RAM.
do like below & wait for the 1 minute data collection to finish.
post FORMATTED results using tags
[code]
bcm@bcm-laptop:~$ vmstat 6 10
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
r b   swpd   free   buff cache   si   so    bi    bo   in   cs us sy id wa
0 0     24 41488 124584 2292224    0    0    97    39 398 865 8 3 86 2
0 0     24 37756 124600 2296736    0    0     0    21 794 1825 6 4 89 1
0 0     24 42804 124616 2296752    0    0     0    19 683 1510 3 2 94 1
0 0     24 43060 124624 2296756    0    0     0    18 738 1669 4 2 94 1
0 0     24 43316 124640 2296760    0    0     0    21 732 1641 4 2 93 1
0 0     24 44564 124656 2296768    0    0     0    16 642 1376 3 1 95 1
0 0     24 44564 124684 2296760    0    0     0    63 686 1524 2 2 95 1
0 0     24 39464 124828 2296780    0    0    22    31 695 1536 4 3 93 1
0 0     24 39464 124844 2296796    0    0     0    27 696 1577 4 2 93 1
0 0     24 39340 124860 2296796    0    0     1    26 781 1784 6 3 90 1
[/code]
(si+so) should be less than (bi+bo)
Handle:      922884
Status Level:      Newbie
Registered:      Mar 22, 2012
Total Posts:      44
Total Questions:      22 (16 unresolved)
Why so many unanswered questions?

Large swap file (900MB), but no pageouts

My MacBook Air 13" with 4GB of RAM accumulates a large swap file over time, but pageouts are 0 (page ins: 1.1million). Anyone know why? Is it possible to see which process/application currently have pages stored in the swap file?

Sorry to dig this old thread up, but I am seeing an identical behavior to the original poster, and I just wanted to say—you did an excellent job of explaining how page ins can be very large with no pageouts, but I don't think this explains the real mystery, which is that there is a large amount of swap space, and a large amount the system says is used, but there are no page outs. You have not explained how a swap file gan grow in usage with no page outs, and if I understand things correctly, this should not be possible.
I'm having the same issue on my new MacBook Pro with Retina display. I have 16GB of RAM and for the most part I don't use more than 4-6GB of that—I bought it for the occasional times I need to do a lot of VM testing, but I haven't needed to do that yet. I consistently see my swap usage grow to be as large as 2-3GB with a total size for all the swapfiles in /var/vm being 3-4GB.
I don't need the space, and the system isn't slow or anything. I just want to know how this is possible. I have been using Mac OS X for 10 years now, and working on linux servers for 5 years or so. I've never seen swap usage be more than 0KB when there are no page outs.
I've attached some screenshots of what I am seeing:
Screen capture from Activity Monitor.
Screen capture from Terminal executing 'du -hsc /var/vm/swapfile*' to tally the total size of the swapfiles.
I should note that it tends to take a day or two of use to start to see this, in a series of sleep cycles here and there. I put my laptop to sleep at night as well as to and from work, etc. It probably sleeps/wakes 5-7 times a day in all. I tend to notice that the usage creeps up, starting atound 50 MB, then I will notice it being a few hundred some time later. It really makes me wonder if this has to do with some kind of discrete vs. dedicated graphics switching or something, perhaps a very low level operation that is somehow avoiding getting counted by the system's resource tracking facilities. I have no idea, but I would love it if there were someone out there who could explain it or point me in the right direction.
Thanks for your time.

Document files and JPG files larger on sharepoint than they ought to be

Documents that I've uploaded to sharepoint (documents meaning anything that is file.doc / file.docx) seem to be nearly twice as large as they should be in most cases. I'm pretty sure that uploading the document to sharepoint mysteriously adds something along
the lines of 10-15KB on top of what is already there (For smaller, one page documents).
The same problem occurs to a lesser extent with jpg/jpeg files, where the image is marginally larger than it would be on a local hard drive. A 5kb image, for example, might be more like 5.3kb on sharepoint. Normally I would expect some form of compression
to occur, and I would expect to see the filesize shrink a bit. I can't imaging what is causing the filesize to go up this way.
I'm assuming there is some kind of strange versioning or underlying data being added behind the scenes, but I was curious as to why the file sizes are much larger on sharepoint than on a local hard drive.
For reference, I am simply uploading the file programatically by sending the byte array to the file itself. I'm not doing anything complicated, really. Nothing I would expect to cause the file to be larger, at least.
It may also be worth mentioning that I re-downloaded the file and compared it with the original, and other than the random size difference, they are 100% identical.

Zachary,
SharePoint 2013 now leverage SqlServer Shredded Storage technology. As you guess it right, going forward SharePoint will shred its content in multiple pieces to only add delta for next version. Great feature for saving storage.
Lets assume a file is 5 MB. In previous SharePoint (SP) version, all subsequent version of that file will be saved differently. If first version add one extra MB to that file, Then total storage would have been as (5MB + 6MB) in SP 2010, but in SP 2013,
the moment we upload / checkout a file, SP will automatically Shred that 5MB file in 10 Shred(Hypothetically 500KB each). I am certain that while Shredding, it has some basic Shred block size (which can be configured) which multiply by number of shred. And
that might be the reason file size is increase.
When we migrate or upload programmatically, Shred logic dont apply, but the moment you check out - SP will Shred it(As per my knowledge). Please test it.
A good resource : The Truth Behind Shredded Storage By: Jeremy T.
SharePoint 2013 shredded storage with traditional and RBS storage
Good to have some insider validation on this topic!
please 'Propose as answer' if it help you, also vote this as helpful if you like this reply.

Large Swap file

Model Name:    MacBook Pro
Model Identifier:    MacBookPro6,2
Processor Name:    Intel Core i5
Processor Speed:    2.53 GHz
Number Of Processors:    1
Total Number Of Cores:    2
L2 Cache (per core):    256 KB
L3 Cache:    3 MB
Memory:    8 GB
Processor Interconnect Speed:    4.8 GT/s
Running the latest version of Parallels and Windows 7 64 bit.
Using the Activity monitor I find that I always have a large swap file (even when parallels is not running), a huge amount of inactive memory and a very small free memory. It slows down my system. Any suggestions?

First, upgrade your system to 10.6.7 or 10.6.8. Second, large swap files don't necessarily mean a thing. You might see the following:
About OS X Memory Management and Usage
Reading system memory usage in Activity Monitor
Memory Management in Mac OS X
Performance Guidelines- Memory Management in Mac OS X
A detailed look at memory usage in OS X
Understanding top output in the Terminal
The amount of available RAM for applications is the sum of Free RAM and Inactive RAM. This will change as applications are opened and closed or change from active to inactive status. The Swap figure represents an estimate of the total amount of swap space required for VM if used, but does not necessarily indicate the actual size of the existing swap file. If you are really in need of more RAM that would be indicated by how frequently the system uses VM. If you open the Terminal and run the top command at the prompt you will find information reported on Pageins () and Pageouts (). Pageouts () is the important figure. If the value in the parentheses is 0 (zero) then OS X is not making instantaneous use of VM which means you have adequate physical RAM for the system with the applications you have loaded. If the figure in parentheses is running positive and your hard drive is constantly being used (thrashing) then you need more physical RAM.
Adding RAM only makes it possible to run more programs concurrently. It doesn't speed up the computer nor make games run faster. What it can do is prevent the system from having to use disk-based VM when it runs out of RAM because you are trying to run too many applications concurrently or using applications that are extremely RAM dependent. It will improve the performance of applications that run mostly in RAM or when loading programs.
Bear in mind you are running Parallels and a VM concurrently with some other OS X applications. Too many concurrent applications will result in using too much memory and increasing swapping.

ST22 Swap memory problem

Hi all,
I having problem in BI 7.0 server for swap memory goes to RED color... I know some variables and paramaters, but I am not sure how to calculate (depend on 12GB physical memory)
Screenshot here... if anyone know how to fix that I really appriciated
http://www.flickr.com/photos/38842895@N04/4538676180/sizes/o/
Thank in advance

Double click on the red highlighted swap, now click on current parameters.
Here you can see which parameters designates the memory for this buffer area. Once buffer is exceeded it begins to SWAP.
this is not a bad thing unless you are seeing performance problems. Most performance problems are far deeper than this.
You now need to research the overall memory usage and decide whether to increase the parameter and possibly decrease others.
use ST06 as well for overall usage amounts of swap.
There is much to understand but you can start by reading here:
http://help.sap.com/saphelp_nw70/helpdata/en/34/d9c8b9c23c11d188b40000e83539c3/content.htm
Edited by: Augustus Cristicini on Apr 20, 2010 10:05 PM

Essbase Using Swap Memory - Degraded Performance

Currently on Essbase 6.5.4.2 and Sun Solaris 5.8I find that when the server is running very low on Physical RAM and needs to use Swap during any Essbase Calculation that calc time performance is severly degraded. Is this a functionality of Essbase or a setting in UNIX that can be altered?I'm not a UNIX admin and I need to know how to approach my IT group with this.Thanks!

Yes, that's to be expected. performance always degrades once swap file is used due to the i/o bottleneck of swapping ram to disk and back. The easiest solution is to prevent your applications running out of ram memory. I've noticed that applications grow in memory through use to some huge sizes, so I unload them from memory at least three times a day so that they load back nice and compact. I've set up a script to do this automatically at the beginning of the day, at midday and at the end. You can also manage memory manually, eg. if you need to run a major calculation, then unload all other applications, then unload that application and reload it before the calc.You can also try to use direct i/o. there is a Unix setting that you can switch to direct i/o, but it caused us problems and corrupted the databases, so use the Essbase database settings. On Solaris you need the root user to run the script 'root.sh', then it will become available. In database/settings, under storage, change the access to direct i/o and tick cache memory locking. You als have to assign a data file cache and reduce your data cache as it doesn't need to be so big about 10% of the data file cache. This will ensure that that database will allways have priority for ram and not use the swap file. The manual recommends that you use buffered i/o instead of direct i/o, but I think it is a matter of judgement. If you need it, then use it. We've been using it without problems. Make sure that your applications using direct i/o don't assign more memory than is available, otherwise it will go back to swap file. The log file will tell you if is is using direct i/o when an application loads.

Increase swap memory

Hi guys,
I'm trying to run some strain calculations but my PC keeps running out of memory (first the RAM (4gb) and after that the swap memory (1GB), checked it with free). I know that for these particular calculations <8GB of memory should suffice. Does anybody know how to increase the swap memory from 1GB to 4GB without reinstalling arch linux?
Cheers,
Joris
Last edited by keizer (2010-04-10 23:00:14)

1) replace swap with swapfile
http://wiki.archlinux.org/index.php/Swap
2) set properly swappiness:
vm.swappiness = 100
number corresponds to % of swap than can be used
set
vm.vfs_cache_pressure=500
you can adjust these settings permanently via /etc/sysctl.conf or temporarily:
sysctl -w vm.swappiness="100"
these settings will not affect system performance if RAM memory is not exhausted but will help if swap is needed.

MBP retina swap memory/humming issue

So i have 2 issues(may or may not be related) going on with my Retina MPB.
1. Whenever i play any flash video(youtube for ex:), it just goes crazy with humming sound(fan I imagine), even though it doesn't get hot and temps are within acceptable range. I don't see the process(chrome flash plugin) taking more than 15 to 20% cpu at max...and memory is acceptable as well, but this sound just keep fluctuating and can't figure out why exactly.
2. Mayb this is related to 1, but why does a machine with 16GB ram use 2.2 of swap memory? or I am reading activity monitor wrong?
http://cl.ly/image/2O3O381l111v (Screenshot of activity monitor)
Any thoughts?
thanks

You can check if some or other corner inside is overheating with Marcel Bresink's free Temperature Monitor. Or splurge a bit on his Hardware Monitor so you can check on temps, fans and the works. http://www.bresink.de/products.html
The use of swap on a user-class computer with 16GB RAM is indeed odd. I've been using mine all week long, running VMs on Fusion, all of Office's apps, browsers, whathaveyou, and swap still remains at zero. Only time I saw some swap space allocated was when I ran Gimp, that insists on swapping explicitly to disk, even if it is just editing a piddly 80k JPEG. But even then, the swap area allocated was just a few tens of MB's, nothing like that huge 2GB area. Besides Flash, care to share what else is running in there?

Exchange 2013 - The Microsoft Exchange Transport service is rejecting message submissions because the service continues to consume more memory than the configured threshold

Noticed at about noon that no emails had been received all day. Began to investigate and found that the MS Exchange Transport service had been set to deny email submission because it was using too much memory on the server (91%).
The error message makes me think that we may have been getting used by malware or something similar.“The Microsoft Exchange Transport service is rejecting message submissions because the service continues to consume more memory than the
configured threshold.”
There are also several warning messages that list particular IP addresses and say that a connection from that IP was denied because there were already the maximum number of connections (20).
From what I can tell, all of the IP addresses are from Taiwan.
The time period for which some emails may be missing is from close of business yesterday ( 4/3/2014) through about 12:45 today (4/4/2014).
From the time I spent reading and trying to figure out the error, I think we may need to readjust our throttling policies to prevent this from happening.
The exchange server is currently running at 90%+ CPU and 50%+ memory usage the majority of the time, and I’m not sure how to fix it.
Also, I cannot get into EMS I get a access denied message from the destination computer. (Exchange server) I want to get into there to change the throttling policy back to default, since we disabled it.
The Error reads:
The WinRM client cannot process the request. The WinRM client tried to use Kerberos authentication mechanism, but the destination computer <Exchange> returned an 'access denied' error. Change the configuration to allow Kerberos authentication
mechanism to be used or specify one of the authentication mechanism supported by the server. (How do I do this?) To use Kerberos, specify the local computer name as the remote destination. (I'm trying to use EMS while logged into the local Exchange server)
Also verify that the client computer and the destination computer are joined to a domain. (Exchange is on our domain, and the computer trying to connect is the same computer) To use basic, specify the local computer name as the remote destination, specify
Basic authentication and provide user mane and password. Possible authentication mechanisms reported by server.
At line:1 char:1
+ New-PSSession -ConnectionURI "$connectionUri" -ConfigurationName Microsoft.Excha ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : OpenError: (System.Manageme....RemoteRunspace:RemoteRunspace) [New-PSSession], PSRemotingTransportException + FullyQualifiedErrorId : AccessDenied,PSSessionOpenFailed
I assumed control of this exchange system already in place and I do not have much experience with exchange 2013 or server 2012. I do know 2008, but that doesn't help very much in this situation.
Recent changes to the system:
About three days ago we switch our sessions policy to allow many more connections, and I believe this caused the issue. This is what I changed it to:
Made the registry DWORD (32-bit) "Maximum Allowed Sessions Per User" and modified the value to 1000. Location of registry change @ HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeIS\ParametersSystem
I just changed it to 10 from the 1000. I'm hoping this solves this. So far no.
Also, I am not the best in the shell or command line interfaces. Any help would be wonderful!

Hi,
Yes, could be hardware performance issue. Try recycle the Transport process and see if the issue persists.
Thanks,
Simon Wu
TechNet Community Support

How to Re Enable Swap Memory on Osx 10.9.2

Hi
Need help in to renable the Swap Memory on Osx 10.9.2.

You can test your memory system in terminal, open terminal (use spotlight to find it or go to utility folder in applications) and issue the following command, watch your activity monitor while it runs, when you've had enough, hit Control-C in the terminal window.
sudo memory_pressure -l warning
watch your pressure rise then hit
control-C

How to diagnose large swap usage

Hi,
We have a java application that is connecting to our oracle 10g database. When the application is not connected the swap file usage on the solaris box is about 1GB. But soon as we startup the java application and connect it to oracle the swap usage jumps to a massive 16GB (and stays like that until with shutdown the application - it does not really grow any more)
The application actually looks fine and works without problems - expect the database is hammering the machine with the swap file. can anyone give me some hints at where I can look on the database to try and diagnose what is acutally causing this large swap file creation - in an attempt what is this application doing? At the moment I am confused as to what could actually cause this.
thx.
S.

Hi, I'd use the iosnoop, iotop, rwsnoop and rwtop commands available in dtrace package (eg. http://users.tpg.com.au/adsln4yb/DTrace/dtracevstruss.html). It can tell a lot about i/o operations, also according to swap. But it only applies to the OS, I can't help you with the Oracle...

Web Process + Safari now hogging 50-75% more memory than Safari 5.0.5 did

Now that Apple has split Safari into two processes — Web Process (handles page loads and other traffic) and Safari (handles interface, bookmarks, history, etc) — these two processes together are using 50% to 75% more memory than Safari did before the upgrade to 5.1.
Three days ago, the most RAM I'd ever seen Safari hog (after several hours of surfing multiple tabs) was 1.1GB (still way more than it needed, once back down to 3 or 4 tabs).
Today, after surfing only an hour:
WebProcess 1.3GB
Safari 552MB
Anyone else seeing this? And anyone have ideas about limiting this memory hogging?

Well, to add a little more frustraton to this thread, a few weeks ago, when I first saw all the bugginess with this "update", I called Apple, was handed up to a higher-level tech person. He told me they were aware of all these problems, and promised me a fix would be released "ASAP". Well, a few weeks later, & of course, no fix. About a week ago, I called again, & was handed to a different higher-level guy, but this time he gave the same tired, "you should disable all your extensions & plug-ins" blah, blah, blah... And worse, he told me that he's heard nothing from users about issues with Safari!!!
Well, I then asked him if the problem really was one or some of the add-ons, why couldn't Apple just give us a list of at least some of the more popular ones that don't work. Why should ever single user have to go thru a one by one, trial & error, add one, then restart, then another, etc, since Apple could just do it, & let us know. Of course, that's never happened, so everyone has been trying anything they can, &/or resorting to using other browsers, & posting here & other places. I sure hope Apple quits stonewalling everyone, you would think they would address this, either by fixing it quickly, or at least letting everyone know they are aware of it, and that a fix will be coming, but pretending they no see, no hear nothing, and it's all in our heads, well, ...... it shucks.

Why are the apps i download larger in size than they are supposed to be

When i download an app off the app store, the app is larger in size than it is supposed to be on my pc and on my ipod.
For example i might download an app that says its 100mb on the app store but when it installs on my ipod or pc it will take up about 200mb.
This problem started happening when i updated Real Racing 2 from my ipod over wifi. It is like when i download something from my account it installs the app but doesnt delete the download.
Any ideas on how to fix this problem or what this problem is will be very helpful.

Oooft thanks for rapid responce!! It is same account as purchased app, defo compatible (3 of them used to be on ipod then disappeared) and this is only computer I've ever used with ipod. I also did a software update just incase and tried dragging and dropping them into device but it won't let me!!!!! I will try the restictions thingy!

Larger Swap memory than compressed in Mavericks 10.9.3

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