Main Memory Cleaning Policy (Algorithm)

Respected Sir/Madam,
I am studying the memory management concepts of Microsoft Windows Operating System.
I need to know about the Main Memory Cleaning Policies or algorithms of latest Operating systems of Microsoft (Windows 7 and 8) in details.
What is the threshold level required for the page replacement after remaining the minimum page frames available in main memory ?
What is the Architecture of the Virtual memory management system of these operating systems?  
It is Urgent.
Please send me the answers of these questions.
I shall be very thankful to you for this.

Hi ,
 Thanks for the response. Basically I first opened parent panel which is of type Window. It included menu , toolbar etc. For menu/toolbar events it opens child windows which gets displayed in main window in the form of tabs. This is my use case.
I tried the suggested profiler Redgate Ants profiler. Its very good and informative! I ran the profiler
got the following output. Though I closed the child window it seems objects are still there in memory . No where I left out string , byte array objects in my code.
Not sure why Runtimemethodinfo , hastable bucket are there in memory. I even tried the workaround mentioned at here.
I thought panel resources might have not been freed up and in my code I am clearing them as well. Still did not see much improvement. Any additional things do I need to check? Please let me know.
Thanks,
Brahmaji.

Similar Messages

  • Background Job - Log Not found (in main memory)

    Gents,
    I am triggering a background through an RFC using JOB_OPEN,JOB_SUBMIT & JOB_CLOSE
    the program associated with the Job is put in to execution immly I don't have any problem
    but some Jobs are in Cancelled Status  coz the program was terminated due to the Error Message
    Log not found ( in main memory ) Message Class - BL Message ID - 207 all the cancelled jobs are
    having the same message.
    It's pretty sure that this message is not issued by my background program.How to get rid of this
    is there any SAP Notes.
    Best Regards-Sreeni Anbarasan

    Check out if there has been any update error in VA02 using transaction SM13.
    Lokesh

  • How to analyse the main memory usage in SAP ERP systems?

    Dear expert,
    I'm doing a research work about analysing the main memory usage in SAP ERP systems.
    I would like to find out what is load in buffers and when. That means, which process have the control of these memories and which are always performing something, tables loaded, and so on. Becuase I tried to isolate the space needed by a simple webservice call (create one material) in my test system, but even after a $SYN there are something stored in the buffers. I use a BAPI to avoid the execution of the SAPGUI and its repercussion in the system (I know the BAPI called uses resources too, but when I run this BAPI to get the statistics, it's like ST02, I get different values). Could someone help me or recommend something specific to read? Thanks a lot in advance.

    Dear expert,
    Thanks a lot for your answer. The point is now that I want to isolate the memory used by a webservice that I call, I mean, I would like to know how many memory is this webservice using in each buffer. And could you tell me where could I read something about the order that things happen in SAP System when a webservice is called (always memory related), that's which steps are done to store data in buffers and so on. Thanks in advance.

  • MBP App Memory Clean showing a total of only 3.38GB RAM, although my MAC should have a total of 4?

    Hello all,
    Perhaps a question more for the tech-experts (I'm not one ) :
    I have been running the (well-known) App Memory Clean for a while, and have been quite satisfied with its "Auto-Clean" function, as it saves me up on the Disk swapping.
    However, as I open the App, there are a few options that can be seen:
    Active
    Wired
    Inactive
    Free
    Used
    Total
    My MBP Retina (late '13) has a 4GB RAM installed- and yet the "Total" RAM memory that Memory Clean displays is a mere 3.41 GB and fluctuating. I have checked Activity Monitor as well as About this Mac>More Info>System Report> Memory, showing me that all slots are "OK".
    Is this an app "bug"? If so, that would be relieving, but nonetheless brings me to a more deep-rooted question:
    Is constantly "cleaning" the RAM bad for it and for the MBP's performance?
    (I have heard that Memory Clean runs by "dumping disk cache"- which is supposedly bad for system performance...?)

    I also have your concerns. I have a first gen rMBP with 16 GB of RAM and I often see every bit of RAM being used!
    So far I’ve been too chicken to upgrade my mid ’11 MBA since it only has 4 GB. I understand Mavericks utilizes RAM differently, but I’m still skeptical. Mavericks hasn’t been as stable as most initial releases so I’m waiting until 10.9 doesn’t seem so much like a beta.
    I’d like to see a good explanation of Mavericks memory management system vs prior versions of the OS. Apple’s quick explanation was ok but far from comprehensive.
    BTW, I switched to FreeMemory when I upgraded to Mavericks. It has all the same functions as Memory Clean but has the added benefit of having a menu bar icon with the familiar pie chart that Activity Monitor once had for a dock icon but lost in the upgrade.
    For now I'll disable the auto clean feature and see how the system behaves, but I'll keep it installed just for it's monitoring capabilities.

  • My mac keeps freezing, i checked my ram fine, checked if SMART was verified it was, i reinstalled my software a few times and my RAM is 8gb used memory clean to make sure it wasnt a RAM probkem and my macbook is still freezing my RAM is 8gb i have

    My mac keeps freezing, i checked my ram fine, checked if SMART was verified it was, i reinstalled my software a few times and my RAM is 8gb used memory clean to make sure it wasnt a RAM probkem and my macbook is still freezing my RAM is 8gb i have 4.50/4.80 gb left and Mid -2012 model Macbook Pro what could be the problem also it started freezong when i upgraded to Yosemite and now my mac freezes once im logged into and sometimes has problem booting up either freezing or agent secuity error black screen??!!!!

    My mac keeps freezing, i checked my ram fine, checked if SMART was verified it was, i reinstalled my software a few times and my RAM is 8gb used memory clean to make sure it wasnt a RAM probkem and my macbook is still freezing my RAM is 8gb i have 4.50/4.80 gb left and Mid -2012 model Macbook Pro what could be the problem also it started freezong when i upgraded to Yosemite and now my mac freezes once im logged into and sometimes has problem booting up either freezing or agent secuity error black screen??!!!!

  • Error in integration Log not found (in main memory)

    Hello Experts,
    We are facing an error at the moment  when we send a contract from CLM to the ERP, we run the transaction BBP_ES_ANALYZE and the error that we got is Log not found (in main memory).
    We already reviewed all master data integration, any other suggestions?
    Also, this integration was working fine at the beginning, but Basis team applied an update to our ERP system and after this it generates this error.
    thanks in advance
    Kind Regards

    Hi,
    Can you check the settings as per blog Debugging MA publish to ERP?
    Unless the activate log is set, BBP_ES_ANALYSE will not be able to provide much information.
    Ashwin

  • Number of times main memory has been unloaded in last 24 hours "0"

    Hello Experts,
    I am getting  error "BIA server is overloaded"  in RSDDBIAMON2 tcode.  
    Description is below:
    BIA server is overloaded
    Message no. RSD_TREX154
    Diagnosis
    The SAP NetWeaver BI Accelerator server is overloaded. Either there has recently been a forced unload of the BIA main memory, ort he total volume of loaded data exceeds the limit of 50% of the available main memory.
    Both these situations negatively impact the stability of the BIA server.
    Procedure
    You have two options:
    Decrease the volume of data in the BIA: Delete BIA indexes that you do not currently need or that you do not urgently require.
    Contact your BIA hardware partner and carry out a new sizing for the BIA hardware.
    Procedure for System Administration
    By default, this message only appears as a warning in processes that index large volumes of data in the BIA. You can use administration parameters to specify this warning as an error message as well. This causes all index processes to terminate if the error occurs.
    To do this, execute program RSDDTREX_ADMIN_MAINTAIN with parameters Object= DONT_IGNORE_BIA_OVERLOAD, Value = X, and INSERT/UPDATE = X.
    Diagnois says
    1) The total volume of loaded data exceeds the limit of 50% of the available main memory,I have already checked the disk used for storing the indexes  and it is not more than 50% of the BW Accelerator main memory.
    2)There has recently been a forced unload of the BIA main memory:  As per error details  Number of times main memory has been unloaded in last 24 hours: '0'  ie no unloaded had happened in last 24 hours.
    Please help me how i can solve this erro as there is not unload happened and also disk usage under control.
    Regards,
    Akshay

    hi,
    1) You can check the traces via the trex standalone tool trexadmin or transaction TREXADMIN. You must provide more details to get an analyze. Was there running a lot of process chains at this time? Have you checked the memory monitoring of the BWA blades?
    2) transaction TREXADMIN -> tab version..
    You can try going through SAP notes which help with high memory issues.
    Sometimes, the rfc server sometimes takes a lot of memory and doesn't free it afterwards.
    Thanks,
    Sheen

  • Loss of service after memory clean

    I performed a memory clean of my blackberry curv  8520 and now I can't use many of the features on my phone. I can't connect via uma and have searching for network constantly at the top of my screen. I can however connect to orange when I am outside (i can't get a signal in my home).
    I performed a dagnostics test with the following results:
    Radio signal activation: No
    Signal Level: Unknown
    Radio access: unknown
    Network: Unknown
    IP address: unknown
    ICMP ping echo: No
    Blackberry registration: No
    connected to blackberry:no
    Blackberry Pin-Pin: No
    Can anyone help me reactivate my services, I am at a loss and would really apreciate some help.
    Solved!
    Go to Solution.

    You're welcome.
    1. If any post helps you please click the below the post(s) that helped you.
    2. Please resolve your thread by marking the post "Solution?" which solved it for you!
    3. Install free BlackBerry Protect today for backups of contacts and data.
    4. Guide to Unlocking your BlackBerry & Unlock Codes
    Join our BBM Channels (Beta)
    BlackBerry Support Forums Channel
    PIN: C0001B7B4   Display/Scan Bar Code
    Knowledge Base Updates
    PIN: C0005A9AA   Display/Scan Bar Code

  • Causes for main memory to be unloaded - BIA Server is overloaded

    The check on our BIA server is showing "BIA Server is overloaded".
    The details indicate that the main memory was unloaded >900 times in the last 24 hours.
    I am not aware of any special activities taking place - what would be the cause of the main memory being unloaded so frequently?
    The indices only take up 25% of main memory, which is well below the 50% threshold recommended by SAP.
    What else might be the cause?
    Thanks

    Hi Experts,
    We are also getting the same Alert / Error in the SAP Net weaver BIA Monitor and we are not able to understand, how to go ahead with the same.
    1. The alert we're getting is "BIA server is overloaded". If we click on details it's showing the alert message as "Number of Times Main Memory Was Unloaded in Last 24 Hours: '1064'".
    2. We even tried doing a BIA Reorg and Restart activity, but in vain.
    Note: I. Before we did the BIA Reorg, the details message was showing as "Number of Times Main Memory Was Unloaded in Last 24 Hours: '2184'".
             II. We did a recent SP 22 upgrade and I'm not sure on where to check for the BIA revision?
    Any suggestions on this would be really helpful?
    Thank You,
    Karthik.Ch

  • Error "massage not found in main memory"

    While generating report in Portal, I am getting error message.
    'Message Not Found (in main memory) '
    Please help me
    B/R
    Faiz

    No We we didnt get any error in RSRT and not even Portal... It is not reproducible...This error reported by Customer...
    I asked to reisntall Application like I.E / SAP GUI / BEX etc.. She did that but still have the problem....

  • Upload pictures to PC from BlackBerry's main memory - no microSD memory card

    How do I upload pictures to PC from BlackBerry's main memory (no microSD memory card)?
    I could do this with the original PC software I got in November 2009. I got a new PC and loaded the latest Blackberry Desktop Software and it only looks for the memory card.
    Thanks
    Dave Lent

    Hello, Please see these helpful articles which discuss the various ways to manage user files on a BB. While they may have been written for earlier versions of DTM and/or BB OS, you should still be able to use them to configure properly to use your BB as a set of USB drives on your PC, thereby enabling any Windows Explorer methodology: http://supportforums.blackberry.com/t5/BlackBerry-Desktop-Software/HOWTO-use-your-blackberry-as-a-US... http://www.blackberryfaq.com/index.php/How_do_I_add_media_files_to_my_microSD_card%3F Good luck and let us know!
    Occam's Razor nearly always applies when troubleshooting technology issues!
    If anyone has been helpful to you, please show your appreciation by clicking the button inside of their post. Please click here and read, along with the threads to which it links, for helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions.
    Join our BBM Channels
    BSCF General Channel
    PIN: C0001B7B4   Display/Scan Bar Code
    Knowledge Base Updates
    PIN: C0005A9AA   Display/Scan Bar Code

  • Hi, i have a macbook air, but i want to upgrade to the new model. I want to sell my existing air, but can i wipe the memory clean of all existing content to sell it, but still update my new pc when it arrives?

    Hi, i have an Air but want to upgrade to the new model. How do i wipe the memory clean of my existing Air so i can sell it, and ensure when i get my new PC it automatically assumes the existing settings? Any help appreciated...

    First of all, as a rule you should have two backups before you do anything else. (most don't, and it's up to you).
    I would have one backup done as a Time Machine backup on an external disk, which you will use to import all settings, data and apps to your new MBA via Setup Assistant on your very first boot of the new machine.
    Second, I would have prepared, a bootable backup done via Carbon Copy Cloner or Super Duper on a second external disk. This you can use for unforseen problems that might be evident on the Time Machine backup (hey it happens).
    After you have these two items in preparation, then use the original system disk or flash drive to reformat and reinstall the original operating system to the old machine, cleanly. After that, it is ready for sale. If the unit is not an SSD equipped MBA, you can perform a secure wiping of the disk when you perform the reformatting.
    To reiterate.... You need a good Time Machine Backup as a source for you setting up the new Mac with Setup Assistant.

  • HT3696 Is this memory cleaner available for windows machines? Where may I find it and or other free windows apps other than at the windows site. Thank You...

    is there somplace that has the mac applications that would work for a windows desktop?

    1.  Why don't you exercise a little self-reliance and do a simple Google search?
    2.  How do you expect anyone to even remotely answer your question since you didn't even meniton what "memory cleaner" you're referring to???

  • Error  "No message found(in main memory) " while creating  new  vendors

    HI Experts,
    I have just join a already going SRM project , i am creating vendors in SRM using su01 and then assigning a BP with the role of employees to that vendor.
    But when i logged in to to the portal for the bid submission i am getting one alert message which states that
    "message not found(in main memory)".
    but if i am using already created vendors(some one else has created it before i joined the project) then it is working fine in the portal.
    i have defined relationship also as it was done in those vendors still its not working.
    Can any one help me in this.

    Hi,
    Please go through the follwoing notes:
    Note 1037262 BBP_QUOT_BOB: Surrogate Bid receives Message not found error
    Note 684024 Error "Message not found (in main memory)"
    Thanks,
    Pradeep

  • Read main memory from RSRT

    Hello,
    I am looking for a way to read/save the main memory of the cache (RSRT) with an abap program. The aim of the development is to regularly save the values of the parameters/select-options used in the queries.
    Does anyone know a simple code to do that
    Regards

    hi John,
    welcome to SDN ...
    the values stored in view RSADMINCV14
    fields
    MAX_LCS_MB Local Cache Size
    MAX_GCS_MB Global Cache Size
    hope this helps.

Maybe you are looking for