Difference between revisions of "Mon"

Latest revision as of 20:00, 5 February 2008

MON(M1)                         MOSIX Commands                        MON(M1)
     
NAME
    mon - MOSIX monitor
    
SYNOPSIS
    mon [-v | -V | -w] [-t] [-d] [-s | -m | -m -m | -u | -f | -l]
    
DESCRIPTION
    Mon displays useful current information about MOSIX nodes.  The informa-
    tion is represented as a bar-chart, which allows a comparison between
    different nodes.
    
    The display shows nodes that are assigned node numbers in
    /etc/mosix/userview.map (see mosix(7)).
    
    The following options are available:
 
    -w     Select horizontal numbering: better display - but less nodes are
           visible.
 
    -v     Select vertical numbering: more nodes are visible - but denser
           display.
 
    -V     Select tight vertical numbering: maximal number of nodes are visi-
           ble - but even denser display.
 
    -t     Display the number of operational nodes and number of CPUs.
 
    -d     Display also dead (not responding) nodes.
 
    -s     Display the CPU-speeds.
 
    -m     Display the used vs. total memory.
 
    -m -m  Display the used vs. total swap space.
 
    -u     Display the "utilizability" (see below).
 
    -f     Display the number of frozen processes.
 
    -l     Display the load (default).
 
    While in mon, the following keys may be used:
 
    v      Select vertical numbering.
 
    V      Select tight vertical numbering.
 
    w      Select horizontal numbering.
 
    a      Select automatic numbering (vertical numbering will be selected if
           it would make the difference between viewing all nodes or not -
           otherwise, horizontal numbering is selected).
 
    s      Display CPU-speeds and number of nodes (if more than 1).
           10000 units represent a standard processor (currently Pentium-IV
           CPU at 3GHz).
 
    m      Display used memory vs. total memory: the used memory is displayed
           as a solid bar while the total memory is extended with '+' signs.
           The memory is shown in Megabytes.
 
    m m    (pressing m twice) Display used swap-space vs. total swap-space:
           the used swap-space is displayed as a solid bar while the total
           swap-space is extended with '+' signs.  Swap-space is shown in
           Gigabytes and is accurate to 0.1GB.
 
    u      Display the percentage of the CPU "utilizability".  A node is con-
           sidered utilizable when all its CPUs are either running a process,
           or when no processes wish to run: this excludes the situation when
           there are processes that wish to run but cannot because they wait
           for a swap-page.  Utilizability should normally be 100% - other-
           wise, it means that memory shortage causes the node to slow down.
 
    f      Display the number of frozen processes.
 
    l      Display loads.  The load represents one CPU-bound process that
           runs on a node with a single CPU under normal conditions.  The
           load increases proportionally on slower CPUs, and decreases pro-
           portionally on faster CPUs and on nodes with more than one CPU.
           The load also increases when the utilizability is below 100%.
 
    d      Display also dead (not-responding) nodes.
 
    D      Stop displaying dead nodes.
 
    t      Toggle displaying the count of operational nodes.
 
    Right-Arrow
           Move one node to the right (when not all nodes fit on the screen).
 
    Left-Arrow
           Move one node to the left (when not all nodes fit on the screen).
 
    n      Move one screen to the right (when not all nodes fit on one
           screen).
 
    p      Move one screen to the left (when not all nodes fit on one
           screen).
 
    h      Bring up a help screen.
 
    Enter  Redraw the screen.
 
    q      Quit Mon.
 
SEE ALSO
    mosix(7).
 
MOSIX                              May 2006                             MOSIX