SWAP space usage??

When I am monitoring my system using TOP, all of my java process is running well over 350M. The Size field is showing 470M and the RES field is showing 350M. But my Xms and Xmx is set to 256M. Is this mean the applications are using SWAP space?

Not necessarily. The total memory used by the JVM process will always be more than the Java heap size, specified by ms and mx. Memory used by the JVM for internal management, memory allocated in native code and memory allocated for the permanent space are all allocated outside of the Java heap space.
You could be using swap space if the total memory reserved by all applications and the OS in the system exceeds the physical RAM installed.

Similar Messages

  • Reporting Swap Space Usage

    I own a piece of software that reports three Solaris swap space statistics:
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    1. Is there a Solaris API that will give me total swap space statistics (disk + RAM)?
    2. If not, am I correct that the kstat vminfo fields report just the RAM swap space statistics and that I just therefore be able to add the values from swapctl and kstat to get the total statistics I require?
    3. The vminfo block has the following swap-related properties:
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         swap_free;     /* unallocated swap in pages */
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  • Swap Space Usage Solaris 8

    Hello to all.
    I had an application (a C programme) running on Solaris 2.4. Recently i upgraded to Solaris 8.
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  • Swap space usage in solaris 2.6

    I'm confused abt how the OS uses the swap space in the solaris 2.6. My system has the following configuration.
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    The 'df -k' over the "/tmp" directory is showing Total around 1.8 GB space for the "swap" volume mounted over "/tmp".
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    Thanks for the response. I understand the concept of anonymous memory. But what is confusing me is the "/tmp" directory. The "df -k" command over the "/tmp" directory is always showing used % as 1%. Also the "swap -s" is never matching with the output of "df -k".. ( I suppose both represent the Virtual attributes of swap space i.e. disk backed memory + portion of the RAM).
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  • Swaps space

    What is swaps in SAP  . I check my SAP server via st02. I seen that all  swaps filed is  red. why it is red. what the mean of red. please explane me .
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    This means that your buffers are hit badly, generally there are always swaps in an SAP system, and these keep increasing day by day if the instance is not restarted recently, an instance restart will clear the red buffer entries in ST02.
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  • Minimum Supported Configuration -Swap space

    Hi Guys,
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    Every user will need some additional amount of swap space. The 50-100MB number on that page is just an estimate, a typical average. If all of your users run memory-greedy applications in a local desktop on the Sun Ray server then you'll probably need more than that. If your users run only a few lightweight applications with no local desktop then you'll probably need less than that. If your users will be using only the Windows Connector or VDA Connector then those are lightweight compared to a full desktop plus desktop apps, so the swap requirement should be pretty small.
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  • Database Instance Using Swap Space even When There is Plenty of Free RAM

    I am facinga strange issue in oracle on solaris 5.10
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    Database version:
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    load averages: 0.09, 0.18, 0.84 01:07:49
    134 processes: 133 sleeping, 1 on cpu
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    1227 oracle 15 59 0 78M 56M sleep 4:27 0.02% ocssd.bin
    9524 vector1 112 59 0 1704M 776M sleep 45:04 0.02% java
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    1297 oracle 1 101 -20 453M 390M sleep 2:47 0.02% oracle
    1765 oracle 1 101 -20 32G 329M sleep 2:45 0.02% oracle
    10258 oracle 1 59 0 32G 345M sleep 0:00 0.02% oracle
    10259 oracle 1 59 0 3400K 2024K cpu/20 0:00 0.01% top
    1777 oracle 1 59 0 32G 342M sleep 1:14 0.01% oracle
    1246 oracle 6 59 0 56M 44M sleep 1:22 0.01% diskmon.bin
    1803 oracle 1 59 0 32G 514M sleep 0:30 0.01% oracle
    1215 oracle 15 59 0 71M 46M sleep 1:12 0.00% cssdagent
    1307 oracle 1 59 0 453M 390M sleep 0:45 0.00% oracle
    1217 oracle 11 59 0 81M 49M sleep 0:35 0.00% orarootagent.bi
    Vmstat output:
    $vmstat 5 5
    kthr memory page disk faults cpu
    r b w swap free re mf pi po fr de sr s3 s3 s3 s3 in sy cs us sy id
    0 0 0 53698448 73900568 20 81 32 6 5 0 1 -0 0 1 -0 2235 1447 1984 1 0 99
    0 0 0 51196160 72037552 1 13 0 0 0 0 0 0 0 0 0 2505 1403 2204 0 0 100
    0 0 0 51193488 72035864 55 380 0 0 0 0 0 0 0 0 0 2487 2143 2203 0 1 99
    0 0 0 51183856 72030176 0 0 0 3 3 0 0 0 0 0 0 2496 1370 2182 0 0 99
    0 0 0 51182648 72029112 22 117 0 0 0 0 0 0 0 0 0 2503 1408 2193 1 0 99
    $cat /etc/release
    Solaris 10 10/09 s10s_u8wos_08a SPARC
    Copyright 2009 Sun Microsystems, Inc. All Rights Reserved.
    Use is subject to license terms.
    Assembled 16 September 2009
    I refered the metalink document id: [ID 761960.1]
    Database Instance Using Swap Space When There is Plenty of Free RAM metalink note [ID 761960.1]
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    Thanks in advance
    With Regards,
    Boobathi P

    I didn't say I am not using 11gr2 memory parameters I am using all the automatic memory parameters but the thinks is as per the metalink note I tried by disabling the automatic memory parameters. but that didn't help me in preventing unnecessary swap usage. So I reverted. now it is using automatic memory parameters.
    so What is the solution for this?
    With Regards,

  • GrowableArray.cpp. Out of swap space?

    I need some help interpreting an error log (the complete log is pasted below)
    The application (JBoss 4.2.2) is started on win 2003 with -Xms256m -Xmx1400m -XX:MaxPermSize=256m
    the log shows the following memory usage:
    PSYoungGen      total 141760K, used 13076K [0x61650000, 0x6b170000, 0x6b1d0000)
      eden space 124992K, 0% used [0x61650000,0x61650000,0x69060000)
      from space 16768K, 77% used [0x69060000,0x69d25230,0x6a0c0000)
      to   space 16448K, 0% used [0x6a160000,0x6a160000,0x6b170000)
    PSOldGen        total 1274368K, used 1246444K [0x139d0000, 0x61650000, 0x61650000)
      object space 1274368K, 97% used [0x139d0000,0x5fb0b398,0x61650000)
    PSPermGen       total 60032K, used 59667K [0x039d0000, 0x07470000, 0x139d0000)
      object space 60032K, 99% used [0x039d0000,0x07414c88,0x07470000)Some of the threads that I read about the "growableArray.cpp. Out of swap space?" problem indicated that the problem may not be related to my memory settings.
    However, the PSPermGen section is included under "Heap". I always thought the MaxPermsize is in addition to the heap size. Also the total of PSPermGen is significantly lower than specified in MaxPermSize while at the same time the usage is at 99%.
    At the moment I can not really pinpoint what situation exactly is causing the problem since the scenario is rather complex, pushing a lot of data into the system, a lot of clients in parallel running queries and requesting the data etc. But with this particular scenario we can reproduce this error within a couple of hours.
    Would it help to increase the virtual address space of windows to 3GB? Would the jvm actually take advantage of it?
    Here is the complete log
    # An unexpected error has been detected by Java Runtime Environment:
    # java.lang.OutOfMemoryError: requested 1024000 bytes for GrET in C:\BUILD_AREA\jdk6_02\hotspot\src\share\vm\utilities\growableArray.cpp. Out of swap space?
    #  Internal Error (414C4C4F434154494F4E0E494E4C494E450E4850500017), pid=4312, tid=11828
    # Java VM: Java HotSpot(TM) Server VM (1.6.0_02-b06 mixed mode)
    # If you would like to submit a bug report, please visit:
    #   http://java.sun.com/webapps/bugreport/crash.jsp
    ---------------  T H R E A D  ---------------
    Current thread (0x6ba32000):  VMThread [id=11828]
    Stack: [0x6bd80000,0x6bdd0000)
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      0x6ccce400 JavaThread "http-" daemon [_thread_blocked, id=13264]
      0x7042b800 JavaThread "http-" daemon [_thread_blocked, id=9724]
      0x70752400 JavaThread "http-" daemon [_thread_in_native, id=10796]
      0x6cc61400 JavaThread "http-" daemon [_thread_blocked, id=9276]
      0x796e8c00 JavaThread "http-" daemon [_thread_blocked, id=10136]
      0x796e8400 JavaThread "http-" daemon [_thread_in_native, id=4692]
      0x796d0800 JavaThread "http-" daemon [_thread_blocked, id=13476]
      0x79710400 JavaThread "http-" daemon [_thread_in_native, id=1536]
      0x6caa0800 JavaThread "http-" daemon [_thread_in_native, id=13260]
      0x6caa0400 JavaThread "http-" daemon [_thread_blocked, id=8884]
      0x6ca0f800 JavaThread "http-" daemon [_thread_blocked, id=7036]
      0x6ca0f400 JavaThread "http-" daemon [_thread_blocked, id=13156]
      0x6c290400 JavaThread "http-" daemon [_thread_blocked, id=10184]
      0x795c9c00 JavaThread "http-" daemon [_thread_blocked, id=8280]
      0x6f15f800 JavaThread "http-" daemon [_thread_blocked, id=9880]
      0x6f15f400 JavaThread "http-" daemon [_thread_blocked, id=9344]
      0x795e9c00 JavaThread "http-" daemon [_thread_blocked, id=17808]
      0x6de80400 JavaThread "http-" daemon [_thread_in_native, id=14384]
      0x79251400 JavaThread "http-" daemon [_thread_in_native, id=6560]
      0x6cac0400 JavaThread "http-" daemon [_thread_in_native, id=5792]
      0x78d97400 JavaThread "http-" daemon [_thread_blocked, id=8936]
      0x709a6400 JavaThread "http-" daemon [_thread_blocked, id=9340]
      0x793d0c00 JavaThread "http-" daemon [_thread_in_native, id=13880]
      0x7943f800 JavaThread "http-" daemon [_thread_blocked, id=8248]
      0x7940f800 JavaThread "http-" daemon [_thread_in_native, id=9752]
      0x7941f800 JavaThread "http-" daemon [_thread_blocked, id=9212]
      0x6ca5a400 JavaThread "http-" daemon [_thread_blocked, id=8780]
      0x7942fc00 JavaThread "http-" daemon [_thread_in_native, id=18200]
      0x6f5cf400 JavaThread "http-" daemon [_thread_in_native, id=8748]
      0x78b16400 JavaThread "http-" daemon [_thread_blocked, id=9744]
      0x70919c00 JavaThread "http-" daemon [_thread_in_native, id=5564]
      0x6cc2a800 JavaThread "http-" daemon [_thread_blocked, id=16932]
      0x6debc400 JavaThread "JMS SessionPool Worker-84" daemon [_thread_blocked, id=13928]
      0x6cd26400 JavaThread "http-" daemon [_thread_blocked, id=1576]
      0x6de4d400 JavaThread "http-" daemon [_thread_in_native, id=4428]
      0x6de67800 JavaThread "http-" daemon [_thread_blocked, id=13876]
      0x6de67400 JavaThread "http-" daemon [_thread_blocked, id=11440]
      0x6de81c00 JavaThread "http-" daemon [_thread_blocked, id=276]
      0x6dea4c00 JavaThread "http-" daemon [_thread_in_native, id=13836]
      0x6df23800 JavaThread "http-" daemon [_thread_blocked, id=5280]
      0x6f160400 JavaThread "http-" daemon [_thread_blocked, id=17548]
      0x6df23400 JavaThread "http-" daemon [_thread_in_native, id=14276]
      0x6dee4c00 JavaThread "http-" daemon [_thread_blocked, id=5880]
      0x6ffc1800 JavaThread "http-" daemon [_thread_in_native, id=17908]
      0x7042fc00 JavaThread "http-" daemon [_thread_blocked, id=13536]
      0x6f043c00 JavaThread "http-" daemon [_thread_blocked, id=15312]
      0x7050b400 JavaThread "http-" daemon [_thread_in_native, id=4408]
      0x6cb96800 JavaThread "http-" daemon [_thread_blocked, id=4248]
      0x6cbf1400 JavaThread "http-" daemon [_thread_in_native, id=11844]
      0x6cbec800 JavaThread "http-" daemon [_thread_blocked, id=9644]
      0x6ca79800 JavaThread "http-" daemon [_thread_blocked, id=13672]
      0x6cb76c00 JavaThread "http-" daemon [_thread_blocked, id=14304]
      0x6cb97c00 JavaThread "http-" daemon [_thread_blocked, id=18396]
      0x6cb97400 JavaThread "http-" daemon [_thread_blocked, id=17604]
      0x6fea2400 JavaThread "http-" daemon [_thread_blocked, id=17816]
      0x6fea3800 JavaThread "http-" daemon [_thread_in_native, id=8612]
      0x6c8e7400 JavaThread "http-" daemon [_thread_blocked, id=14460]
      0x6c9af800 JavaThread "http-" daemon [_thread_blocked, id=13824]
      0x6c9adc00 JavaThread "http-" daemon [_thread_blocked, id=17972]
      0x6c9ad400 JavaThread "http-" daemon [_thread_blocked, id=740]
      0x6c8e7c00 JavaThread "http-" daemon [_thread_in_native, id=14112]
      0x6c8eb800 JavaThread "http-" daemon [_thread_blocked, id=15376]
      0x6c19b800 JavaThread "http-" daemon [_thread_blocked, id=14164]
      0x6c19c000 JavaThread "http-" daemon [_thread_blocked, id=13916]
      0x6c9dcc00 JavaThread "http-" daemon [_thread_in_native, id=17896]
      0x6c8e8800 JavaThread "http-" daemon [_thread_blocked, id=18364]
      0x6ca58400 JavaThread "http-" daemon [_thread_blocked, id=14104]
      0x6c8eac00 JavaThread "http-" daemon [_thread_in_native, id=18376]
      0x6c9ea800 JavaThread "http-" daemon [_thread_blocked, id=13764]
      0x6c9d1000 JavaThread "http-" daemon [_thread_blocked, id=14156]
      0x6c9ce400 JavaThread "http-" daemon [_thread_blocked, id=9156]
      0x6c8e9800 JavaThread "http-" daemon [_thread_blocked, id=11404]
      0x6c9b3c00 JavaThread "http-" daemon [_thread_blocked, id=18288]
      0x6c9b1000 JavaThread "http-" daemon [_thread_blocked, id=2028]
      0x6c352400 JavaThread "http-" daemon [_thread_in_native, id=14280]
      0x6c351000 JavaThread "http-" daemon [_thread_in_native, id=18280]
      0x6c85b000 JavaThread "http-" daemon [_thread_in_native, id=18152]
      0x6ed96400 JavaThread "http-" daemon [_thread_in_native, id=14260]
      0x6c294c00 JavaThread "http-" daemon [_thread_blocked, id=14144]
      0x6c44bc00 JavaThread "http-" daemon [_thread_blocked, id=8252]
      0x6c2acc00 JavaThread "http-" daemon [_thread_blocked, id=17992]
      0x6c70f000 JavaThread "http-" daemon [_thread_in_native, id=17860]
      0x6c70c000 JavaThread "http-" daemon [_thread_blocked, id=11664]
      0x6c6bf400 JavaThread "http-" daemon [_thread_blocked, id=18400]
      0x6c6bfc00 JavaThread "http-" daemon [_thread_blocked, id=17692]
      0x6c6c0800 JavaThread "http-" daemon [_thread_blocked, id=13640]
      0x6c70f800 JavaThread "http-" daemon [_thread_blocked, id=10276]
      0x6c6c2000 JavaThread "http-" daemon [_thread_in_native, id=13244]
      0x6c70d400 JavaThread "http-" daemon [_thread_in_native, id=17928]
      0x6c6c1000 JavaThread "http-" daemon [_thread_blocked, id=18208]
      0x6c34c400 JavaThread "http-" daemon [_thread_blocked, id=11952]
      0x6ed0a000 JavaThread "http-" daemon [_thread_blocked, id=13192]
      0x6ed09400 JavaThread "http-" daemon [_thread_blocked, id=18136]
      0x6c6bd800 JavaThread "http-" daemon [_thread_blocked, id=18252]
      0x6ed0b000 JavaThread "http-" daemon [_thread_in_native, id=18176]
      0x6c6bc400 JavaThread "http-" daemon [_thread_in_native, id=17676]
      0x6c246400 JavaThread "http-" daemon [_thread_in_native, id=18352]
      0x6c199400 JavaThread "http-" daemon [_thread_in_native, id=18264]
      0x6c6be400 JavaThread "http-" daemon [_thread_in_native, id=18372]
      0x6c247400 JavaThread "http-" daemon [_thread_in_native, id=18256]
      0x6c199c00 JavaThread "http-" daemon [_thread_in_native, id=17688]
      0x6c19f400 JavaThread "http-" daemon [_thread_blocked, id=9956]
      0x6c19e800 JavaThread "http-" daemon [_thread_blocked, id=18260]
      0x6c293400 JavaThread "http-" daemon [_thread_blocked, id=18324]
      0x6fe2b800 JavaThread "http-" daemon [_thread_blocked, id=17920]
      0x6c292000 JavaThread "http-" daemon [_thread_blocked, id=17672]
      0x6c13bc00 JavaThread "http-" daemon [_thread_blocked, id=18268]
      0x6c1ed400 JavaThread "http-" daemon [_thread_blocked, id=13008]
      0x6c1ed800 JavaThread "http-" daemon [_thread_blocked, id=12728]
      0x6c13b400 JavaThread "http-" daemon [_thread_blocked, id=11532]
      0x6c139000 JavaThread "http-" daemon [_thread_blocked, id=17852]
      0x6c138800 JavaThread "http-" daemon [_thread_blocked, id=5320]
      0x6c291000 JavaThread "http-" daemon [_thread_in_native, id=18276]
      0x6c353800 JavaThread "http-" daemon [_thread_blocked, id=18240]
      0x6c291800 JavaThread "http-" daemon [_thread_blocked, id=18328]
      0x6c13cc00 JavaThread "http-" daemon [_thread_blocked, id=18244]
      0x6bc76400 JavaThread "http-" daemon [_thread_blocked, id=17788]
      0x7092e400 JavaThread "JMS SessionPool Worker-83" daemon [_thread_blocked, id=14004]
      0x704c0800 JavaThread "http-" daemon [_thread_blocked, id=17784]
      0x6c0ea400 JavaThread "JMS SessionPool Worker-82" daemon [_thread_blocked, id=17988]
      0x70669400 JavaThread "JMS SessionPool Worker-81" daemon [_thread_blocked, id=18024]
      0x704e0400 JavaThread "JMS SessionPool Worker-79" daemon [_thread_blocked, id=12612]
      0x70d0e800 JavaThread "JMS SessionPool Worker-78" daemon [_thread_blocked, id=6032]
      0x6f507400 JavaThread "JMS SessionPool Worker-77" daemon [_thread_blocked, id=13400]
      0x7048b400 JavaThread "JMS SessionPool Worker-76" daemon [_thread_blocked, id=6996]
      0x6e5f6400 JavaThread "JMS SessionPool Worker-75" daemon [_thread_blocked, id=13004]
      0x78c63800 JavaThread "JMS SessionPool Worker-50" daemon [_thread_blocked, id=8452]
      0x7872e400 JavaThread "JMS SessionPool Worker-49" daemon [_thread_blocked, id=5824]
      0x6fb92400 JavaThread "JMS SessionPool Worker-48" daemon [_thread_blocked, id=11616]
      0x786d0800 JavaThread "JMS SessionPool Worker-47" daemon [_thread_blocked, id=13044]
      0x6f598400 JavaThread "RMI RenewClean-[]" daemon [_thread_blocked, id=6632]
      0x70c99800 JavaThread "http-" daemon [_thread_blocked, id=10280]
      0x6fb4fc00 JavaThread "JMS SessionPool Worker-28" daemon [_thread_blocked, id=13420]
      0x783ff400 JavaThread "Thread-35" daemon [_thread_blocked, id=11040]
      0x6f6ec000 JavaThread "Thread-34" [_thread_blocked, id=1952]
      0x6e491c00 JavaThread "Timer-11" daemon [_thread_blocked, id=11888]
      0x6fc3ac00 JavaThread "JMS SessionPool Worker-5" daemon [_thread_blocked, id=9332]
      0x6f17f000 JavaThread "JMS SessionPool Worker-4" daemon [_thread_blocked, id=11924]
      0x6f94c800 JavaThread "JMS SessionPool Worker-3" daemon [_thread_blocked, id=7360]
      0x6ec30400 JavaThread "JMS SessionPool Worker-2" daemon [_thread_blocked, id=11376]
      0x6fbaf000 JavaThread "JMS SessionPool Worker-1" daemon [_thread_blocked, id=11280]
      0x6ed46c00 JavaThread "JMS SessionPool Worker-0" daemon [_thread_blocked, id=8244]
      0x6de7ac00 JavaThread "Thread-32" [_thread_blocked, id=9876]
      0x6ef11800 JavaThread "WorkerThread#2[]" [_thread_blocked, id=9336]
      0x6e825800 JavaThread "WorkerThread#1[]" [_thread_blocked, id=10964]
      0x6eae0c00 JavaThread "WorkerThread#0[]" [_thread_blocked, id=11668]
      0x6fe80400 JavaThread "RMI Scheduler(0)" daemon [_thread_blocked, id=11976]
      0x6df8a800 JavaThread "Thread-5" [_thread_blocked, id=12840]
      0x7003a400 JavaThread "ajp-" daemon [_thread_in_native, id=12744]
      0x6f9c0400 JavaThread "http-" daemon [_thread_in_native, id=13788]
      0x6f185800 JavaThread "JBossLifeThread" [_thread_blocked, id=12000]
      0x6f7a9400 JavaThread "Timer-10" daemon [_thread_blocked, id=5576]
      0x6e4ff800 JavaThread "Timer-9" daemon [_thread_blocked, id=7876]
      0x6ded8400 JavaThread "QuartzScheduler_DeadlineScheduler-1_MisfireHandler" [_thread_blocked, id=13756]
      0x6c7ae400 JavaThread "DeadlineScheduler_QuartzSchedulerThread" [_thread_blocked, id=13948]
      0x6c451800 JavaThread "DeadlineScheduler_Worker-5" [_thread_blocked, id=13772]
      0x6c440800 JavaThread "DeadlineScheduler_Worker-4" [_thread_blocked, id=13752]
      0x6c3e9800 JavaThread "DeadlineScheduler_Worker-3" [_thread_blocked, id=13800]
      0x6c461800 JavaThread "DeadlineScheduler_Worker-2" [_thread_blocked, id=13428]
      0x6c607800 JavaThread "DeadlineScheduler_Worker-1" [_thread_blocked, id=13616]
      0x6fada400 JavaThread "Connection Consumer for dest JBossTopic[AuditTopic] id=6" [_thread_blocked, id=9500]
      0x6f5d0400 JavaThread "Thread-24" [_thread_blocked, id=10296]
      0x70472400 JavaThread "Connection Consumer for dest JBossTopic[AuditTopic] id=5" [_thread_blocked, id=8888]
      0x70007800 JavaThread "Thread-23" [_thread_blocked, id=10752]
      0x6fe43400 JavaThread "Connection Consumer for dest JBossTopic[ErrorTopic] id=4" [_thread_blocked, id=1920]
      0x6fe03400 JavaThread "Thread-22" [_thread_blocked, id=13844]
      0x6fdcb800 JavaThread "Connection Consumer for dest JBossTopic[AuditTopic] id=3" [_thread_blocked, id=13516]
      0x6ee22c00 JavaThread "Thread-21" [_thread_blocked, id=13704]
      0x7006e800 JavaThread "Connection Consumer for dest JBossQueue[ActiveActivityQueue] id=2" [_thread_blocked, id=17912]
      0x6f56d800 JavaThread "Thread-20" [_thread_blocked, id=14120]
      0x70294400 JavaThread "Connection Consumer for dest JBossTopic[FreeTextTopic] id=1" [_thread_blocked, id=7636]
      0x6fa6ac00 JavaThread "Thread-19" [_thread_blocked, id=12200]
      0x6edfa800 JavaThread "Timer-8" daemon [_thread_blocked, id=4388]
      0x6cc84400 JavaThread "Timer-7" daemon [_thread_blocked, id=16304]
      0x6bc77800 JavaThread "Timer-6" daemon [_thread_blocked, id=11292]
      0x6bc77400 JavaThread "Timer-5" daemon [_thread_blocked, id=5168]
      0x6dff5400 JavaThread "Timer-4" daemon [_thread_blocked, id=8232]
      0x6e5cc400 JavaThread "Thread-12" [_thread_blocked, id=12792]
      0x6c162800 JavaThread "ConnectionTable.Connection.Receiver [ -]" daemon [_thread_in_native, id=7236]
      0x6c2dd800 JavaThread "ConnectionTable.Connection.Receiver [ -]" daemon [_thread_in_native, id=13608]
      0x6c612c00 JavaThread "MERGE2.FindSubgroups thread (c                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        

    uGohde wrote:
    Would it help to increase the virtual address space of windows to 3GB? Would the jvm actually take advantage of it?Forgot to mention this in my last post ...
    No, it wouldn't help. The JDK (VM + library native code) isn't linked with the /LARGEADDRESSAWARE option so windows won't give it a 3G address space. The JDK code has been tested in this mode and works, but the change was not made because it could break existing JNI code which is not expecting to addresses larger than 2G. See
    [bug 5061380|http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5061380]

  • Decreased min free swap space

    Hello everyone,
    due to technical problems, in 07/Dic/2005 we had to replace a disk in one of our cluster server of SAP R/3 Enterprise. We also increased its level security from RAID 0 to RAID 5.
    But today we have detected than since that moment, the min free swap space has decreased considerably, from 12800 KB (approx.) to 1100 KB (approx) !! (with ST06 transaction). The replaced disk has the SAME characteristics of the previous one
    How can we solve this situation and return to original swap space values? Which is the optimal configuration of swap space in SAP and Windows 2003 Server?? We have two nodes in a cluster (one with the application server and one with the database), and each one has 4Gb of memory.
    Current commit charge values of Windows 2003 Server task Manager are:
    Commit charge (K):
    Limit: 7931568
    Peak: 7925732
    This is the SAP answer to the note I opened:
    "Please ask your hardware partner about this. At the moment I do not know anything about the symptom on other customer systems. My opinion is that the workload has been changed, thus increased peak values. Please look at the installation guide "
    Can yoy help me?
    Thanks in advance,
    Óscar Sánchez
    [email protected]

    Hi Oskar,
    My suggestion:
    Activate NT performance monitor and try to identify
    the time when you have peak usage of swap and application that caused it. To my knowledge, even 12800 KB free swap is not acceptable amount (at least, there should be couple of hundreds megabites available). Check your process monitor to see what applications take much memory. If you replaced your disk on the C: drive of the other MSCS node, I don't see any ways that this replacement could affect to the other node swap size. (I am assuming that C: drive is not sharing through the nodes)

  • Observation: SAP uses swap space even when OS has available unused memory

    Hi Folks,
       It is my understanding that any memory not used by the Linux OS itself or the SAP application is available for Linux to use for I/O buffers and file caching.  When the SAP application requires more memory I would expect Linux to take memory away from itself (release I/O buffer and/or file caching memory).
       We have observed that SAP uses swap space even when there is  memory available.  Is there some feature in SAP kernel or some ABAP construct that causes SAP to prefer swap space over available memory?  Or maybe there is a Linux kernel setting that influences SAP's use of swapping.

    Hi Mike
    You did not mention which distribution you have. Under SLES there is is a parameter called SWAPPINESS, which controls the buffering/swapping.
    cat /proc/sys/vm/swappiness
    If you don't already know, you can see the memory usage with the free command.
    root # free -m
                 total       used       free     shared    buffers     cached
    Mem:          7987       7901         85          0        364       4262
    -/+ buffers/cache:       3274       4712
    Swap:        15999          0      15999
    As far as i know, in this example 3274 is memory used by SAP and other processes and 4712 is cache. Please correct me if i am wrong.
    Edit: a low swappines, for example 10 means to reduce cache first, a high swappiness (example 100) means page out processes first
    Edited by: mho on Jun 20, 2008 11:21 AM

  • Get swap space on Solaris

    there are different opinions on how to get the swap space on Solaris.
    some say: swap -s and the space= used + available
    others say swap -l (donno how they get the swap size)
    other say 'top' command
    others say using format command (in print sub-command)
    Could you please advise on how to get the swap size on a solaris machine?

    mpfefer wrote:
    there are different opinions on how to get the swap space on Solaris.That's because there is no single definition of 'swap'. So if you ask for 'swap space', it's going to be interpreted differently by different people.
    some say: swap -s and the space= used + availableThis shows you the allocation of the VM space. (Most uses of 'swap' by Solaris commands equate it with total virtual memory).
    others say swap -l (donno how they get the swap size)This shows you the allocation of all active swap files.
    other say 'top' commandThat can show you both RAM usage and VM/swap usage.
    others say using format command (in print sub-command)Format can show you disk partitioning information. Disk partitioning may or may not have any bearing on how you're using swap files. You'd need at least 'swap -l' information (and possibly other commands) to make comparisons. But then again, 'swap -l' is all you'd need in that case anyway.
    Could you please advise on how to get the swap size on a solaris machine?What do you mean by 'swap size'?

  • Do we need SWAP Space?

    Hi Folks!
    I am running Archlinux 64bit on my System with 4096 Mb RAM. I use my System for Programming (Java, C), Gaming (UT2004, Enemy Territory, True Combat Elite, Doom3, ....), Distributed Computing (Boinc), Email, Surfing the Net, Watching and Converting Videos , Picture processing (Gimp) and Office work in general (Printing, Writing, ...).
    There was never a lack of memory on my System and my Swap Space, which have an amount of 2000 Mb, is never used.
    I would shrink it to 512 Mb, but i would not delete this partition.
    By the way: i do not use the hibernate Funktion. In that case i should give at least 4096 Mb to the Swap Partition.
    Here are some interesting Articles about that Problem:
    http://sourcefrog.net/weblog/software/l … /swap.html
    What do you thing about this issue?

    iphitus wrote:In shining's case, something must have been forking off, possibly make starting new compilation processes.
    Actually, I just checked some old mails and here are some precisions :
    1) the first time, the box was totally unresponsive, and nothing visible had been killed
    2) the second time, it killed both firefox and gnome. I suspect I had the compilation running in screen, so that was still going on.
    And with firefox and gnome killed, the box was much more responsive
    Also I believe that I was using makeflags -j3 in both cases. So probably that does not help with memory usage.
    And it could also indeed makes the task of oom killer more difficult.
    So if I ever want to compile it again, I can do two things : running outside X to free a lot of mem, and with -j1
    Besides, I have only 1gb. So people with 2gb and more probably don't need to care about this.
    But I still think that it is better to have some swap space, and have the system slows down because of swap usage in extreme conditions, rather than having the oom killer kill tasks and losing potentially important data / work / whatever.
    Now if you know that the maximum memory usage you can achieve doing something productive is lower than your mem, then it is fine.
    Actually I have only 1gb and no swap, the only times I had problems is with this octave compilation, and I was not even using the box at this point, I just let it compile, so I did not lose anything.

  • How to find Oracle is using swap space or not?

    I have a SuSe Linux database server on which 2 Oracle 10g databases and one MySQL server is running.
    I can see a very little swap space is being used in the server while there is almost 100% RAM utlization.
    I want to know if my Oracle databases are using swap or not. If it is using, how much of swap being used currently by each Oracle database?
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    0 0 2366860 36996 81660 9458664 67 44 4160 356 9 13 5 3 82 9
    0 0 2366860 38224 81748 9458576 0 0 0 512 1041 369 0 0 99 1
    1 0 2366860 38224 81748 9458576 0 0 4 80 1053 293 6 0 93 0
    2 0 2366860 38224 81752 9458572 0 0 80 40 1467 956 22 7 70 1
    2 1 2366860 38248 81760 9458564 0 0 0 580 1150 444 32 17 50 1
    1 1 2366860 38124 81808 9458516 0 0 360 1040 1672 1158 28 13 51 8
    2 0 2366860 38124 81832 9458492 0 0 84 288 1380 931 33 10 57 1
    2 0 2366860 36596 81884 9458388 52 0 52 4088 1098 475 36 16 46 1
    2 0 2366860 38188 81916 9458356 0 0 144 1096 1251 570 36 12 49 2
    2 0 2366860 38180 81916 9458356 0 0 68 136 1595 1134 28 9 63 1

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