SystemMonitor scripts

We recently added a new small but useful feature to the SystemMonitor, the ability to run external scripts.

Here is an example:

<sysmon logger="Q2">
 <attr name="sleepTime" type="java.lang.Long">3600000</attr>
 <attr name="detailRequired" type="java.lang.Boolean">true</attr>
 <property name="script" value="uname -a" />
 <property name="script" value="id" />
 <property name="script" value="pwd" />
 <property name="script" value="uptime" />
 <property name="script" value="vm_stat" />
 <property name="script" value="jps -l" />
</sysmon>

output looks like this:

<log realm="org.jpos.q2.qbean.SystemMonitor" at="Fri May 10 10:04:08 UYT 2013.700">
  <info>
               OS: Mac OS X
             host: alejandro-revillas-macbook-pro.local/192.168.1.110
          version: 1.9.1-SNAPSHOT (8a4a517)
         instance: bac8e399-ccf2-4778-97df-d37d704bb011
           uptime: 00:00:08.877
       processors: 8
           drift : 0
    memory(t/u/f): 989/177/812
          threads: 56
            Thread[Reference Handler,10,system]
            Thread[Finalizer,8,system]
            Thread[Signal Dispatcher,9,system]
            Thread[RMI TCP Accept-0,5,system]
            Thread[Keep-Alive-Timer,8,system]
            Thread[Q2-bac8e399-ccf2-4778-97df-d37d704bb011,5,main]
            Thread[DestroyJavaVM,5,main]
            Thread[Timer-0,5,main]
            Thread[pool-1-thread-1,5,main]
            Thread[DefaultQuartzScheduler_Worker-1,5,main]
            Thread[DefaultQuartzScheduler_Worker-2,5,main]
            Thread[DefaultQuartzScheduler_Worker-3,5,main]
            ...
            ...
            ...
            Thread[PooledThread-0,5,ThreadPool-0-1]
            Thread[PooledThread-1,5,ThreadPool-2-3]
    name-registrar:
      txnmgr: org.jpos.transaction.TransactionManager
      logger.: org.jpos.util.Logger
      tspace:default: org.jpos.space.TSpace
        <key count='1'>$TAILLOCK.1878750663</key>
        <keycount>0</keycount>
        <gcinfo>0,0</gcinfo>

      logger.Q2.buffered: org.jpos.util.BufferedLogListener
      server.jcard-server: org.jpos.iso.ISOServer
        connected=0, rx=0, tx=0, last=0
      ssm: org.jpos.security.jceadapter.SSM
      jcard-xml-server: org.jpos.q2.iso.QServer
      tspace:org.jpos.transaction.TransactionManager@6ffb75c7: org.jpos.space.TSpace
        <key count='1'>$HEAD</key>
        <key count='1'>$TAIL</key>
        <keycount>1</keycount>
        <gcinfo>0,0</gcinfo>

      capture-date: org.jpos.ee.CaptureDate
      server.jcard-xml-server: org.jpos.iso.ISOServer
        connected=0, rx=0, tx=0, last=0
      ks: org.jpos.security.SimpleKeyFile
      logger.Q2: org.jpos.util.Logger
      jcard-server: org.jpos.q2.iso.QServer
    uname -a:
      Darwin alejandro-revillas-macbook-pro.local 11.4.2 Darwin Kernel Version 11.4.2: Thu Aug 23 16:25:48 PDT 2012; root:xnu-1699.32.7~1/RELEASE_X86_64 x86_64
    id:
      uid=502(apr) gid=20(staff) groups=20(staff),401(com.apple.access_screensharing),12(everyone),33(_appstore),61(localaccounts),79(_appserverusr),80(admin),81(_appserveradm),98(_lpadmin),100(_lpoperator),204(_developer)
    pwd:
      /Users/apr/git/jcardinternal/build/install/jcardinternal
    uptime:
      10:04  up 8 days, 14:45, 5 users, load averages: 1.26 1.17 1.35
    vm_stat:
      Mach Virtual Memory Statistics: (page size of 4096 bytes)
      Pages free:                           4494.
      Pages active:                       552609.
      Pages inactive:                     271878.
      Pages speculative:                     245.
      Pages wired down:                   216855.
      "Translation faults":            116355062.
      Pages copy-on-write:               5347593.
      Pages zero filled:                52951322.
      Pages reactivated:                 2098799.
      Pageins:                           3732245.
      Pageouts:                           467375.
      Object cache: 73 hits of 543605 lookups (0% hit rate)
    jps -l:
      14371 sun.tools.jps.Jps
      12512 org.gradle.launcher.daemon.bootstrap.GradleDaemon
      14365 jcardinternal-2.0.0-SNAPSHOT.jar
  </info>
</log>

You can have handy vmstat 1 30 as a default so that you can get an idea of the overall system performance when you get a high ‘drift’ (drift is the new name for the old ‘elapsed’ info).