Solaris 10 - VMSTAT free memory behavior puzzling

I am running a rather complex and large application on a Sun v215 (2 UltraSPARC IIIi 1.5 ghz with 16 GB RAM).
When I start the application up vmstat reports about 95% free memory but over time (7 days) the free memory reported by 'vmstat 60' decreases at a steady rate until it appears to level out around 80% free memory. I do not have any memory leaks in the application. The application is a combination of Java and C code. There is a fare amount of I/O but nothing overwhelming. Is there an explaination for the decrease and leveling out of the free memory over this time period?

Thanks! That is what I was thinking but I wanted someone to validate my theory. Do you have any technical reference(s) (i.e. article, book, webpage) that backups the statement "If a Solaris system have a lot of free memory, Solaris will start to cache filesystem pages to the memory until the memory is used about 80-90%."?
Any technical reference will help me make my case with our customer much easier. Thank you once again for your help.
As followup note: I re-ran some tests with vmstat -p and there is quite a bit of file system paging occuring. I do have many file-page-ins. However I would not expect the file-page-out and file-page-free to be as high as they are if free memory continues to decrease to 80%.

Similar Messages

Monitoring Free memory in solaris 8

Hi,
I will like to monitor the amount of free memory in my system. I understand that as Solaris 8 implements "cyclical page cache", the value read from the "free list" column of vmstat will be much more accurate than previous version.
But when i run it on my sparc, the value is 50208KB.
But when i run Memtool 3.8.2, these are the values
Total memory:119Mb
Kernel memory:10Mb
Application:52Mb
Exe and lib :15Mb
File Cache: 33Mb
Free, file cache : 3Mb
Free, free :3 Mb
(33 + 3 + 3) =>39Mb
Can someone tell me how to reconcile the values from this 2 tools? Which is more accurate? (or is there a better method?)
Thanks!

Kalpesh
if you're reading this it would be @&$%#&$( useful to folks in this list to actually BE ABLE TO REFER TO KNOWN SUN BUGS and to be able to report their own.
I couldn't log in to the sunsolve site - do I need a special password to be able to view bug status? (I agree I can find patches there, but
not being able to view/report bugs as a user under the free license program is ridiculous).
How can we get resolution on this?

How to get the size of free memory in unix?

I have one oracle database running in unix, and I want to tune the memory used.
additional, I want to create another database in this server.
I don't know how many memory left in it.
Could you tell which unix commands can be used to find out the size of free memory?
Thanks

%vmstat 3
procs memory page disk faults cpu
r b w swap free re mf pi po fr de sr s0 -- -- -- in sy cs us sy id
0 0 0 3025816 994456 4 19 6 0 0 0 0 8 0 0 0 459 253 139 1 1 99
0 0 0 2864688 777408 0 2 0 0 0 0 0 3 0 0 0 428 134 175 0 1 99
0 0 0 2864688 777408 0 0 0 0 0 0 0 7 0 0 0 448 112 166 0 0 100
one interesting observation about vmstat I found out is (mostly on Solaris)
the first line of information always off chart, so I usually do a few interval to get constant result.
if you use linux
just
cat /proc/meminfo

Memory leak puzzle

Hello guys,
I'm having a very, very difficult time debugging this memory leak on my server. I'm pretty sure it's related to berkeley DB XML, bu I just couldn't prove this in numbers.
My server: Debian GNU/Linux 2.4.27-2-386 #1 Wed Aug 17 09:33:35 UTC 2005 i686 GNU/Linux, 512 MB of RAM, Pentium 4-class processor.
Here's the behaviour. I start Tomcat 5.5.15, the application is loaded, current memory status:
delegaciainterativa:~# free -m
total used free shared buffers cached
Mem: 440 346 94 0 14 282
-/+ buffers/cache: 49 391
Swap: 909 4 905
So, I've got 94 MBs of free memory. Now, here's this JSP I'm running:
<%@ page language="java" %>
<%@ page session="true" %>
<%@ page import="br.gov.al.delegaciainterativa.admin.*"%>
<%@ page import="br.gov.al.delegaciainterativa.controles.*"%>
<%@ page import="br.gov.al.delegaciainterativa.admin.areas.*"%>
<%@ page import="br.gov.al.delegaciainterativa.controles.BdbXmlAmbiente"%>
<%@ page import="java.util.*"%>
<%@ page import="javax.servlet.RequestDispatcher"%>
<%@ page import="com.sleepycat.dbxml.XmlContainer"%>
<%@ page import="com.sleepycat.dbxml.XmlDocument"%>
<%@ page import="com.sleepycat.dbxml.XmlException"%>
<%@ page import="com.sleepycat.dbxml.XmlIndexDeclaration"%>
<%@ page import="com.sleepycat.dbxml.XmlIndexSpecification"%>
<%@ page import="com.sleepycat.dbxml.XmlQueryContext"%>
<%@ page import="com.sleepycat.dbxml.XmlQueryExpression"%>
<%@ page import="com.sleepycat.dbxml.XmlResults"%>
<%@ page import="com.sleepycat.dbxml.XmlTransaction"%>
<%@ page import="com.sleepycat.dbxml.XmlUpdateContext"%>
<%@ page import="com.sleepycat.dbxml.XmlValue"%>
<%@ page import="com.sleepycat.dbxml.XmlUpdateContext"%>
<%@ page import="com.sleepycat.dbxml.XmlQueryContext"%>
<%@ include file="config.jsp"%>
<%!
 final String _grupoPagina = "visualizaLogsUsuario";
%>

<%
 HttpSession sessao = request.getSession(true);
 BdbXmlAmbiente bdbxmlAmbiente = new BdbXmlAmbiente();
 XmlContainer container = bdbxmlAmbiente.abrirContainer(Config.getNomeContainerBO());
 String fullquery = "";
 fullquery = "for $i in collection('"+ Config.getNomeContainerBO() +"')/BO \n";
 fullquery += "where $i/cadastro/fim/data/date >= '2006-00-00' \n";
 fullquery += "return $i";
ArrayList docs = new ArrayList();
XmlResults results = null;
 XmlValue value = null;
 XmlDocument document = null;
try {
 XmlQueryContext context = bdbxmlAmbiente.getEnvironmentInit().getManager().createQueryContext();
 context.setEvaluationType(XmlQueryContext.Eager);
 XmlQueryExpression xqe = bdbxmlAmbiente.getEnvironmentInit().getManager().prepare(fullquery, context);
 results = xqe.execute(context);
 out.println("fez busca, deletando...");
while (results.hasNext()) {
 value = results.next();
document = value.asDocument();
 document.fetchAllData();
 out.println(document.getName() + " ");
//out.println("total: " + results.size() + "");
} catch (Throwable e) {
 out.println(e);
e.printStackTrace();
} finally {
 results.delete();
%>
This basically loads about 1600 small documents (~5KB) from the container, and guess how memory is now:
delegaciainterativa:~# free -m
total used free shared buffers cached
Mem: 440 429 11 0 14 282
-/+ buffers/cache: 132 308
Swap: 909 4 905
That's about 83Mbs consumed!! And if I perform other searches like this, this keeps eating up more and more memory, then swapping and getting slow... and sometimes crashing Tomcat.
Here's the big mistery: the memory NEVER GETS RELEASED. Even calling delete(), as I did explicitily, it doesnt release the memory. It keeps increasing as searches are performed.
Now, let's go to the profiler. I've installed JProfiler and run it on this server, and here're the results: http://freeunix.com.br/All_Objects.html
Even more puzzling, I havent got any impressive amount of memory consumption.
So, what can I do to figure this out? The only way to release memory is to restart the server once and a while, which far from ideal.
I'd really would appreciate any help about this, since I'm on production with this server.
cheers,
-- Breno Jacinto

Hello George,
 I tried this:
<%
 HttpSession sessao = request.getSession(true);
 BdbXmlAmbiente bdbxmlAmbiente = new BdbXmlAmbiente();
 XmlContainer container = bdbxmlAmbiente.abrirContainer(Config.getNomeContainerBO());
 String fullquery = "";
 fullquery = "for $i in collection('"+ Config.getNomeContainerBO() +"')/BO \n";
 fullquery += "where $i/cadastro/fim/data/date >= '2006-00-00' \n";
 fullquery += "return $i";
 ArrayList docs = new ArrayList();
 XmlResults results = null;
 XmlValue value = null;
 XmlDocument document = null;
 try {
 XmlQueryContext context = bdbxmlAmbiente.getEnvironmentInit().getManager().createQueryContext();
 context.setEvaluationType(XmlQueryContext.Eager);
 XmlQueryExpression xqe = bdbxmlAmbiente.getEnvironmentInit().getManager().prepare(fullquery, context);
 results = xqe.execute(context);
 out.println("fez busca, deletando...");
 while (results.hasNext()) {
 value = results.next();
 document = value.asDocument();
 document.fetchAllData();
 out.println(document.getName() + " ");
 value.delete();
 document.delete();
 //out.println("total: " + results.size() + "");
 context.delete();
 xqe.delete();
 results.delete();
 } catch (Throwable e) {
 out.println(e);
 e.printStackTrace();
%>
 Don't you think that it's too much to consume ~80 MBs of RAM, in a search that returns ~1600 5 KB documents? And worse, this amount is never released.
 I'm wondering if there's any configuration issue here? Such as JVM's Heap size, or BDBXML Environment Initialization?
thanks,
-- Breno

Free Memory app - how to remove?

Some time ago I bought the Free Memory app from the Mac App Store. Now I have a better memory cleaner and I want to delete Free Memory app but when I try to trash it, I get a message that the app is active and cannot be deleted. I checked at the Mac App store and I find that they have removed Free Memory app from the store. Is this because the app has been giving problems? And how to I getb rid of it?

You must quit the application before you can remove it.
Uninstalling Software: The Basics
Most OS X applications are completely self-contained "packages" that can be uninstalled by simply dragging the application to the Trash. Applications may create preference files that are stored in the /Home/Library/Preferences/ folder. Although they do nothing once you delete the associated application, they do take up some disk space. If you want you can look for them in the above location and delete them, too.
Some applications may install an uninstaller program that can be used to remove the application. In some cases the uninstaller may be part of the application's installer, and is invoked by clicking on a Customize button that will appear during the install process.
Some applications may install components in the /Home/Library/Applications Support/ folder. You can also check there to see if the application has created a folder. You can also delete the folder that's in the Applications Support folder. Again, they don't do anything but take up disk space once the application is trashed.
Some applications may install a startupitem or a Log In item. Startupitems are usually installed in the /Library/StartupItems/ folder and less often in the /Home/Library/StartupItems/ folder. Log In Items are set in the Accounts preferences. Open System Preferences, click on the Accounts icon, then click on the LogIn Items tab. Locate the item in the list for the application you want to remove and click on the "-" button to delete it from the list.
Some software use startup daemons or agents that are a new feature of the OS. Look for them in /Library/LaunchAgents/ and /Library/LaunchDaemons/ or in /Home/Library/LaunchAgents/.
If an application installs any other files the best way to track them down is to do a Finder search using the application name or the developer name as the search term. Unfortunately Spotlight will not look in certain folders by default. You can modify Spotlight's behavior or use a third-party search utility, EasyFind, instead.
Some applications install a receipt in the /Library/Receipts/ folder. Usually with the same name as the program or the developer. The item generally has a ".pkg" extension. Be sure you also delete this item as some programs use it to determine if it's already installed.
There are many utilities that can uninstall applications. Here is a selection:
    1. AppZapper 2.0.1
    2. AppDelete 3.2.6
    3. Automaton 1.50
    4. Hazel
    5. AppCleaner 2.1.0
    6. CleanApp
    7. iTrash 1.8.2
    8. Amnesia
    9. Uninstaller 1.15.1
10. Spring Cleaning 11.0.1
For more information visit The XLab FAQs and read the FAQ on removing software.

Replication agent doesn´t free memory after expensive operation

Our environment is made up of master node and 17 subscriber.
We have issued a delete action implying 1000000 rows. During the deletion, normal CPU, memory and swap usage was observed. Later, CPU usage has recovered while memory and swap has not. The most memory consumming process was timestenrep with 9Gb.
Deletion has been correctly replicated to all nodes. However, the replication agent needed to be restarted manually in order to recover memory/swap.
Why the replication agent did not recover on its own and free memory?
Definition in sys.odbc.ini
Datastore=/data/db/xxxx
PermSize=4000
tempSize=250
DurableCommits=0
TypeMode=1
LogFileSize=64
LogBuffSize=65536
MemoryLock=3
LockWait=10
PrivateCommands=1
Authenticate=0
DatabaseCharacterSet=WE8ISO8859P15
ConnectionCharacterSet=WE8ISO8859P15
CkptFrequency=300
CkptLogVolume=128
Connections=90
TimesTen Version installed (ttVersion command)
TimesTen Release 7.0.5.0.0 (64 bit Solaris) (ivpnges2tt70:17000) 2008-04-04T01:19:41Z
Instance admin: root
Instance home directory: /opt/TimesTen/ivpnges2tt70
Daemon home directory: /var/TimesTen/ivpnges2tt70
Regards,
Matú

In a replicated environment, executing very large transactions (such as deleting 1M rows in a single transaction) is a very hazardous thing to do and is something you should avoid at all costs. It can cause a number of serious problems. Transactions should be limited to no more than a few thousand operations. If you need to empty a table, use TRUNCATE instead. This will execute far more quickly, generate less log and will not cause problems for replication. If you cannot use TRUNCATE then you should break the DELETE up into multiple smaller transactions. For example if you wish to delete all row where 'startdate' is less than some value and this is likely to result in a large number of deletions then you could repeatedly execute the following sequence:
DELETE FIRST 1000 FROM sometable WHERE startdate < :someval;
COMMIT;
and just keep doing this until the 'rows affected' value is zero.
The same applies to large inserts and updates.
The memory usage behaviour of the replication daemon, while perhaps not ideal, is correct and as expected. When you delete 1M rows in a single transaction the replication daemon has to allocate memory (via malloc) for 17x copies (in your case) of the transaction data. That is probably a lot of memory. Once the transaction has been replicated to all 17 subscribers. This memory is moved to an internal 'free' list for re-use but is not returned to the O/S until the replication agent is terminated. Since it such a bad idea to execute these large transactions this behaviour is generally not a problem.
Chris

Inactive memory is growing until there is no free memory

Recently something happened and inactive memory commence growing from time to time. Even if I do nothing and have no application running. File cache eats all free memory (24Gb) in a couple of minutes and then OS is getting too slow.
sudo purge helps, sometimes after purging cache stops growing and sometimes I have to purge a few times.
Two month ago there was no such a behavior, I have no idea what's happened to the OS.
ps. sorry, had to post again to this community, cannot to move from Safari community

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Neat Trick! Free memory run Repair Permissions...

Ok, this one baffles me, I'm wondering if its just my MBP setup or if this will work for anyone. I noticed that if I run Disk Utility and Repair Permissions after starting up I free up almost 300megs of memory. Yes 300 MEG! Even if there are no permission problems to fix...
When I start up I have around 1112 Meg free memory and another 300-400 of used inactive memory. If I run DU and repair permissions my free memory shoots up to 1442 MEG Free.
Could someone else give this a try and let me know if the same happens for you. If it does I'd sure like to know why.
I realize this isn't an earth shattering thing here but it is a little puzzling, at least to me...
Would love to hear others results with this...
Cheers,
Peter

The only app that appears to display all running processes (if you can get them to display properly) is "top." Open the Terminal and run top at the prompt. If you have the Developer Tools installed you could try using the included utility called BigTop. It's likely that the processes with lowest PIDs are the ones run at startup. I don't know the specific processes but I do know the startup sequence of events:
The first thing that runs at startup is the BootROM. It contains the POST or Power-On Self Test that checks basic hardware, sets the initial states for the CPU, RAM, and crucial hardware interfaces. It also verifies RAM. If the machine passes POST then you will hear the normal chime. If not you will hear one of five beep errors: one beep means no RAM installed; two beeps means the RAM is incompatible; three beeps means there are no good memory banks; four beeps means there is no good image in the BootROM; and five beeps means the processor is not operable.
Next is the initialization of Open Firmware which also checks for startup modifier keys (like OPTION or SHIFT.)
After initialization the Mac OS X system is located and control is transferred to BootX which initializes the kernel environment and drivers needed to boot the system. It also starts up the kernel initialization process. When loading the kernel environment BootX also attempts to load any previously cached set of device drivers. This is what's going on when you see the spinning gear on the startup screen.
Next the kernel initializes the I/O kit and starts launchd. Launchd manages all the system daemons for both the system and individual users.
If you open Activity Monitor then click on the PID column to sort the PIDs in ascending order, then from the drop down menu select All Processes, Hierarchically. You will see the order of processes handled by launchd which is the first process run after initialization. Process 0 is the kernel_task.
After launchd executes it runs the /etc/rc script that performs basic system initialization which in turn launches SystemStarter that runs the contents of the startupitems folder. Configuration data are stored in the /etc/hostconfig file.
Next comes the Login Window process which loads the user environment, then the Dock, Finder, and SystemUIServer followed by any Login Items. If this is an installation in progress it will also launch the Setup Assistant.
This completes the startup process.

Linux free memory confusion.

Hi,
I am trying to know the amount of free memory in linux however get more confused.
all hereunder commands run during one minute at the same box:
1)
$ free -m
total used free shared buffers cached
Mem: 24118 23992 126 0 0 14193
-/+ buffers/cache: 9799 14319
Swap: 16383 0 16383
2)
$top
Mem: 24697152k total, 24573876k used, 123276k free, 0k buffers
Swap: 16777208k total, 84k used, 16777124k free, 14539380k cached
3)
$cat /proc/meminfo
MemTotal: 24697152 kB
MemFree: 122956 kB
Buffers: 0 kB
Cached: 14556828 kB
SwapCached: 0 kB
Active: 9905800 kB
Inactive: 14418416 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 24697152 kB
LowFree: 122956 kB
SwapTotal: 16777208 kB
SwapFree: 16777124 kB
Dirty: 36 kB
Writeback: 0 kB
AnonPages: 9767396 kB
Mapped: 57128 kB
Slab: 179524 kB
PageTables: 32464 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 29125784 kB
Committed_AS: 11207060 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 8516 kB
VmallocChunk: 34359729783 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
Hugepagesize: 2048 kB
3)
Script:
---memScriptStart----
TOT=`cat /proc/meminfo | grep MemTotal: | awk '{print $2}'`
USED=`cat /proc/meminfo | grep Active: | awk '{print $2}'`
FREE=$[$TOT - $USED ]
LOG=/tmp/mem_monitor.log
echo > $LOG
SEND=0
if [ "$USED" -gt "0" ]; then
USEDPERC=$[$USED * 100 / $TOT]
echo "Used Percentage : $USEDPERC %"
TOTMB=$[$TOT / 1024 ]
USEDMB=$[$USED / 1024 ]
FREEMB=$[$TOTMB - $USEDMB ]
# echo "Used Percentage : $USEDPERC"
if [ "$USEDPERC" -gt "30" ]; then
SEND=1
STATUS="Warning"
echo "------------------------------------------------------------------" >> $LOG
echo `hostname` >> $LOG
echo "------------------------------------------------------------------" >> $LOG
echo "Total Memory (MB) : $TOTMB" >> $LOG
echo "Used Memory (MB) : $USEDMB" >> $LOG
echo "Free Memory (MB) : $FREEMB" >> $LOG
echo "Used Percentage : $USEDPERC %" >> $LOG
echo "------------------------------------------------------------------" >> $LOG
if [ "$USEDPERC" -gt "95" ]; then
STATUS="Critical"
fi
fi
fi
if [ "$FREEMB" -eq "0" ]; then
SEND=1
STATUS="Fatal"
echo "------------------------------------------------------------------" >> $LOG
echo " No free memory available in " `hostname` >>$LOG
echo "------------------------------------------------------------------" >> $LOG
fi
cat $LOG
---memScriptEnd----
Samle output:
hostname
Total Memory (MB) : 24118
Used Memory (MB) : 10532
Free Memory (MB) : 13586
Used Percentage : 43 %
Thank you,
Edited by: user592759 on May 4, 2011 4:03 AM

Each of the methods you listed will show you memory information, so does also vmstat, which can also be helpful. But memory management is somewhat more complex than total, used and free. What about shared memory /dev/shm, for instance? From what I understand, reporting the free memory will not help you to determine if the computer has enough memory available to perform additional tasks. Your script seems to take the total amount of memory minus the active memory and considers the rest to be free, which is of course different than what the system tools report as free.
The following should describe some of the information available:
http://www.redhat.com/advice/tips/meminfo.html
As long as the server isn’t using swap space, there’s shouldn’t be a concern about physical memory. The memory that’s currency being registered as used can be replaced if another program needs it. To get a "true" reading of memory usage, look at is the -/+ buffers/cache. From an application perspective, the output above shows this server has about 14G of free memory.
http://stackoverflow.com/questions/1407643/how-is-the-linux-calculating-memfree
MemFree in /proc/meminfo is a count of how many pages are free in the buddy allocator. This buddy allocator is the fundamental unit of physical memory allocation in the kernel; however there are a lot of ways pages can be returned to the buddy allocator in time of need - for example, freeing empty SLABs, discarding cache/buffer RAM (even if this means invalidating PTEs in a running process), or as a last resort, swapping things out.
In fact, MemFree is generally controlled to be only 5-10% of total physical RAM, with any extra free RAM being coopted into cache as time goes on. As such, MemFree alone is a very incomplete view of the overall memory situation.

My macbook pro model mid 2009 is running slow. free memory is 35 mbs and inactive memory is 1.36 gb with a total of 5 gb RAM memory

Problem description:
too much inactive memory 1.87 gb and free memory only 35 mb
EtreCheck version: 2.1.1 (104)
Report generated 10 December 2014 3:30:26 pm IST
Hardware Information: ℹ️
MacBook Pro (13-inch, Mid 2009) (Verified)
MacBook Pro - model: MacBookPro5,5
1 2.26 GHz Intel Core 2 Duo CPU: 2-core
5 GB RAM Upgradeable
BANK 0/DIMM0
1 GB DDR3 1067 MHz ok
BANK 1/DIMM0
4 GB DDR3 1067 MHz ok
Bluetooth: Old - Handoff/Airdrop2 not supported
Wireless: en1: 802.11 a/b/g/n
Video Information: ℹ️
NVIDIA GeForce 9400M - VRAM: 256 MB
Color LCD 1280 x 800
System Software: ℹ️
OS X 10.10.1 (14B25) - Uptime: 4:42:54
Disk Information: ℹ️
WDC WD5000LPVT-80G33T2 disk0 : (500.11 GB)
S.M.A.R.T. Status: Verified
EFI (disk0s1) <not mounted> : 210 MB
[redacted] (disk0s2) / : 499.25 GB (142.01 GB free)
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
HL-DT-ST DVDRW GS23N
USB Information: ℹ️
Apple Inc. Built-in iSight
Apple Internal Memory Card Reader
Apple Inc. Apple Internal Keyboard / Trackpad
Apple Computer, Inc. IR Receiver
Apple Inc. BRCM2046 Hub
Apple Inc. Bluetooth USB Host Controller
Gatekeeper: ℹ️
Anywhere
Kernel Extensions: ℹ️
/System/Library/Extensions
[not loaded] com.driver.KUSBModemCDC07 (4.0.2) [Support]
[not loaded] com.driver.KUSBModemDataA07 (4.0.2) [Support]
Startup Items: ℹ️
JHHPortDetect: Path: /Library/StartupItems/JHHPortDetect
Sudochmod: Path: /Library/StartupItems/Sudochmod
Startup items are obsolete in OS X Yosemite
Launch Agents: ℹ️
[not loaded] com.adobe.AAM.Updater-1.0.plist [Support]
[running] com.bjango.istatmenusagent.plist [Support]
[loaded] com.google.keystone.agent.plist [Support]
[loaded] com.oracle.java.Java-Updater.plist [Support]
[running] jp.co.canon.CUPSCAPT.BG.plist [Support]
[loaded] org.macosforge.xquartz.startx.plist [Support]
Launch Daemons: ℹ️
[loaded] com.adobe.fpsaud.plist [Support]
[invalid?] com.adobe.SwitchBoard.plist [Support]
[running] com.bjango.istatmenusdaemon.plist [Support]
[loaded] com.google.keystone.daemon.plist [Support]
[loaded] com.microsoft.office.licensing.helper.plist [Support]
[loaded] com.oracle.java.Helper-Tool.plist [Support]
[loaded] com.oracle.java.JavaUpdateHelper.plist [Support]
[loaded] org.macosforge.xquartz.privileged_startx.plist [Support]
[loaded] org.tcpdump.chmod_bpf.plist [Support]
User Launch Agents: ℹ️
[loaded] com.adobe.ARM.[...].plist [Support]
User Login Items: ℹ️
iTunesHelper Application (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
Caffeine Application (/Applications/Caffeine.app)
AdobeResourceSynchronizer ApplicationHidden (/Applications/Adobe Reader.app/Contents/Support/AdobeResourceSynchronizer.app)
Dropbox Application (/Applications/Dropbox.app)
HyperDock Helper UNKNOWN (missing value)
Internet Plug-ins: ℹ️
o1dbrowserplugin: Version: 5.38.6.0 - SDK 10.8 [Support]
Default Browser: Version: 600 - SDK 10.10
AdobePDFViewerNPAPI: Version: 11.0.09 - SDK 10.6 [Support]
FlashPlayer-10.6: Version: 15.0.0.246 - SDK 10.6 [Support]
Flash Player: Version: 15.0.0.246 - SDK 10.6 Mismatch! Adobe recommends 16.0.0.235
QuickTime Plugin: Version: 7.7.3
googletalkbrowserplugin: Version: 5.38.6.0 - SDK 10.8 [Support]
SharePointBrowserPlugin: Version: 14.0.0 [Support]
AdobePDFViewer: Version: 11.0.09 - SDK 10.6 [Support]
zako: Version: zako 1.0.0.0 - SDK 10.8 [Support]
iPhotoPhotocast: Version: 7.0 - SDK 10.8
JavaAppletPlugin: Version: Java 7 Update 71 Check version
User internet Plug-ins: ℹ️
BlueStacks Install Detector: Version: Unknown
Safari Extensions: ℹ️
AdBlock
ClickToFlash
Awesome Screenshot
Breaking News
The New York Times
3rd Party Preference Panes: ℹ️
Flash Player [Support]
Java [Support]
Time Machine: ℹ️
Skip System Files: NO
Mobile backups: ON
Auto backup: YES
Volumes being backed up:
Arupreet: Disk size: 499.25 GB Disk used: 357.24 GB
Destinations:
CHIKKI [Local]
Total size: 331.41 GB
Total number of backups: 2
Oldest backup: 2014-06-10 13:36:00 +0000
Last backup: 2014-09-08 13:57:40 +0000
Size of backup disk: Too small
Backup size 331.41 GB < (Disk used 357.24 GB X 3)
Top Processes by CPU: ℹ️
 8% python
 3% WindowServer
 3% uTorrent
 2% SystemUIServer
 0% mtmfs
Top Processes by Memory: ℹ️
1.29 GB JavaAppLauncher
123 MB SystemUIServer
102 MB iStatMenusDaemon
86 MB com.apple.WebKit.WebContent
81 MB WindowServer
Virtual Memory Information: ℹ️
50 MB Free RAM
1.97 GB Active RAM
1.90 GB Inactive RAM
673 MB Wired RAM
6.70 GB Page-ins
8 MB Page-outs
Diagnostics Information: ℹ️
Dec 10, 2014, 10:48:11 AM Self test - passed
Dec 9, 2014, 02:54:15 AM VLC_2014-12-09-025415_Arus-MacBook-Pro.crash

Not sure if using Terminal would help:
Launch Activity Monitor
Select Memory tab
Launch Terminal
type sudo purge
password
10-15 sec later Terminal should refresh and show freed memory & cache

Set get parameter but free memory id is not working

Hi All,
I am using set get parameter to transfer data from one module to another .
But when i am trying to clear the memory id using Free memory id .
it is not doing that.
Does it work with import export.
What method i should use to clear this memory id ..
Thanks in advance
ANit gautam

Clears the memory:
SET PARAMETER ID pid FIELD space.

High cache usage of free memory

I dont know if this is normal but my fresh archlinux x86_64 install with Xfce uses round 300Mb of 4Gb ram space after boot but then after i start and close some programs i get to 3 Gb used of 3.87 Gb free memory when all applycation are closed. Now i understand that kernel caches some data in memory but i cant clear it all with commands:
sync
echo 1 > /proc/sys/vm/drop_caches
echo 2 > /proc/sys/vm/drop_caches
echo 3 > /proc/sys/vm/drop_caches
After i do that system reports 540 Mb used compared to 300Mb from boot. Is there a way to limit the ammount of cache usage so i dont end up having all free memory used by cache?
Last edited by Anril (2009-12-29 13:19:52)

Ram that is unused is wasted ram, the linux kernel manages it very well so no worries there.
If you have swap usage it's because most probably you have things stored in the ram that are not being used often but cannot be discarded too so things being used more often take precedence.
If you think you have enough ram for all your needs then why not disable swap? I've read that there might be a speed penalty for running without swap but I've been running my system without swap (arch64 4G ram) and I've never had any bad surprises.
There are a few things that might prompt swap usage (don't quote me on that though, it just seems to me to be the case), if you copy many files from one place to the other the kernel will use all the ram available to try to cache them, if you copy many GB then all the ram will get filled (and maybe other things will get evicted to swap).
It's not a bug, free ram is there to be used, things that have been used/needed recently get to stay in the ram, other things can go to the swap, if you can cache a file that has been recently used and need to use it again shortly after then it's much faster if it is in the ram instead of having to read it again from the hard disk. The logic behind it is good, it's just that some corner cases may make behave badly.

Bug in my code or strange memory behavior ?

Hi, Guys !
It's been a while since I post something in this forum - trying to use your help when it's really needed.
So, here we go ...
(we use Oracle 8.1.7 on Unix box and SQL * Plus 8.1.6)
While back I wrote "core" PL/SQL package that resides in let's say DB1 database. It has RECORD_EXISTS_FNC function designed to dynamically check If the record exists in certain table/view. Assumptions are that you pass in :
Table/View name, Column name, and unique numeric value (because by DBA rules all of our Tables have SEQUENCE as a Primary Key. And I plan soon to put in overloaded function to accept unique character value)
Also every Table has SYS_TIME_STAMP and SYS_UPDATE_SEQuence columns that populated by Trigger before Insert/Update representing Last Update time_stamp
and how many times record was updated within same second.
(in case more than one User updates same record in same time - that was written before Oracle had more granular date/time). So function has SYS_TIME_STAMP and SYS_UPDATE_SEQUENCE parameters (optional) accordingly.
And It looks something like :
FUNCTION RECORD_EXISTS_FNC
(iBV_NAME IN USER_VIEWS.VIEW_NAME%TYPE,
iPK_FIELD IN USER_TAB_COLUMNS.COLUMN_NAME%TYPE,
iPK_VALUE IN NUMBER,
iSYS_TIME_STAMP IN DATE DEFAULT NULL,
iSYS_UPDATE_SEQ IN NUMBER DEFAULT NULL) RETURN BOOLEAN IS
TYPE REF_CUR IS REF CURSOR;
CR REF_CUR;
i PLS_INTEGER DEFAULT 0;
vRESULT BOOLEAN DEFAULT FALSE;
vQUERY USER_SOURCE.TEXT%TYPE;
BEGIN
vQUERY := 'SELECT 1 FROM ' || iBV_NAME || ' WHERE ' || iPK_FIELD || ' = ' || iPK_VALUE;
IF iSYS_TIME_STAMP IS NOT NULL AND iSYS_UPDATE_SEQ IS NOT NULL THEN
vQUERY := vQUERY || ' AND SYS_TIME_STAMP = TO_DATE (''' || iSYS_TIME_STAMP || ''')
AND SYS_UPDATE_SEQ = ' || iSYS_UPDATE_SEQ;
END IF;
IF iBV_NAME IS NOT NULL AND
iPK_FIELD IS NOT NULL AND
iPK_VALUE IS NOT NULL THEN
OPEN CR FOR vQUERY;
FETCH CR INTO i;
vRESULT := CR%FOUND;
CLOSE CR;
END IF;
RETURN vRESULT;
EXCEPTION
WHEN OTHERS THEN
IF CR%ISOPEN THEN
CLOSE CR;
END IF;
INSERT_ERROR_LOG_PRC ('CORE_PKG', 'ORACLE', SQLCODE, SQLERRM, 'RECORD_EXISTS_FNC');
RETURN vRESULT;
END RECORD_EXISTS_FNC;
So the problem is when I call this function from let's say
database DB2 (via db remote link and synonym) and I know exactly that record does exists (because I am selecting those SYS fields before pass them in) - I get the correct result TRUE. The other programmer (Patrick) calls this function within same DB2 database, within same UserID/password (obviously different session), running exactly the same testing code and gets result FALSE (record doesn't exist, but it does !) He tried to Logoff/Login again several times within several days and try to run it and still was getting FALSE !
I tried to Logoff/Login again and I was getting mostly TRUE and sometimes FALSE too !!!
I thought may be It has something to do with REF CURSOR that I use to build SQL on the fly, so I changed to NDS
using EXECUTE IMMEDIATE statement - nothing changed.
vQUERY := 'SELECT COUNT (1) FROM ' || iBV_NAME || ' WHERE ' || iPK_FIELD || ' = ' || iPK_VALUE;
IF iSYS_TIME_STAMP IS NOT NULL AND iSYS_UPDATE_SEQ IS NOT NULL THEN
vQUERY := vQUERY || ' AND SYS_TIME_STAMP = TO_DATE (''' || iSYS_TIME_STAMP || ''') AND SYS_UPDATE_SEQ = ' || iSYS_UPDATE_SEQ;
END IF;
EXECUTE IMMEDIATE vQUERY INTO i;
vRESULT := NOT (i = 0);
RETURN vRESULT;
Interesting note : when Patrick doesn't pass SYS parameters (Time_stamp, Update_sequence), or passes NULLs - function always finds the record ! (Statement 2 below)
May be it has to do with the way TO_DATE () function gets parsed in that dynamic SQL - I don't know ...
Here's the test code :
SET SERVEROUTPUT ON;
DECLARE
SYS_TIME DATE;
SYS_SEQ NUMBER;
bEXISTS BOOLEAN DEFAULT FALSE;
BEGIN
SELECT SYS_TIME_STAMP, SYS_UPDATE_SEQ INTO SYS_TIME, SYS_SEQ FROM LOCATION_BV WHERE PK = 1;
bEXISTS := CORE_PKG.RECORD_EXISTS_FNC ('LOCATION_BV','PK',1, SYS_TIME, SYS_SEQ); -- STATEMENT 1
--bEXISTS := CORE_PKG.RECORD_EXISTS_FNC ('LOCATION_BV','PK',1, NULL, NULL); -- STATEMENT 2
IF bEXISTS THEN
DBMS_OUTPUT.PUT_LINE ('TRUE');
ELSE
DBMS_OUTPUT.PUT_LINE ('FALSE');
END IF;
END;
I asked our DBA, he has no clue about this strange inconsistent results.
I debugged line by line, extracted that generated SQL and ran it in same account - works fine !
Does anyone knows or have clues or can help what's going on ???
I don't know If this is bug in my code or strange memory behavior ?
(Please let me know If anything unclear)
Thanx a lot for your help and time !
Steve K.

see your other thread
Bug in my code or strange memory behavior ?

I have two iphones, different telcos, i am using the same apple id for both - how can i use the 10GB icloud free memory of my new iphone 5?

I have two iphones, different telcos, i am using the same apple id for both - how can i use the 10GB icloud free memory of my new iphone 5?

Thank you KiltedTim!
YES, that is the free 5GB icloud memory for each apple ID. Can I not add the free 5Gb of my second Iphone to my original apple ID (5GB also) as I want to use one Apple ID name on both 2 Iphones? Is it necessary to have a different apple ID for the second Iphone to avail the free 5GB it carries with it?

I have copied videos onto an external hard drive. to free memory on my macbook. When I try to delete these I am warned that I will not be able to use this video in existing projects How do I point iMovie to events in my external hard drive so I can pl

I have copied videos onto an external hard drive. to free memory on my macbook. When I try to delete these I am woarned that I will not be able to use this video in existing projects
How do I point iMovie to events in my external hard drive so I can play projects which use them?
MacBook, iMovie 9.0.4

Hi
You can do this - by not doing it the way You describe as it will not work.
a. the external hard disk - MUST BE - Mac OS extended (hfs) formatted -
UNIX/DOS/FAT32/Mac OS Exchange - will work for most things - BUT NOT FOR VIDEO (iMovie, iDVD or FinalCut doesn't matter)
b. Do not alter or move any folder named
• iMovie Event's - or -
• iMovie Project's
on DeskTop/Finder - at all
All moving's of Events and Projects must be done within the iMovie Application - then connections will not break.
(move them back and see if iMovie remembers them - then do move as described above)
Yours Bengt W

Solaris 10 - VMSTAT free memory behavior puzzling

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