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vmstat [2012/04/12 12:43] (current)
k2patel created
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 +====== vmstat ======
  
 +This is just the man page snapshot for field description
 +
 +<code text>
 +FIELD DESCRIPTION FOR VM MODE
 +   Procs
 +       r: The number of processes waiting for run time.
 +       b: The number of processes in uninterruptible sleep.
 +
 +   ​Memory
 +       swpd: the amount of virtual memory used.
 +       free: the amount of idle memory.
 +       buff: the amount of memory used as buffers.
 +       ​cache:​ the amount of memory used as cache.
 +       ​inact:​ the amount of inactive memory. (-a option)
 +       ​active:​ the amount of active memory. (-a option)
 +
 +   Swap
 +       si: Amount of memory swapped in from disk (/s).
 +       so: Amount of memory swapped to disk (/s).
 +
 +   IO
 +       bi: Blocks received from a block device (blocks/s).
 +       bo: Blocks sent to a block device (blocks/s).
 +
 +   ​System
 +       in: The number of interrupts per second, including the clock.
 +       cs: The number of context switches per second.
 +
 +   CPU
 +       These are percentages of total CPU time.
 +       us: Time spent running non-kernel code. (user time, including nice time)
 +       sy: Time spent running kernel code. (system time)
 +       id: Time spent idle. Prior to Linux 2.5.41, this includes IO-wait time.
 +       wa: Time spent waiting for IO. Prior to Linux 2.5.41, included in idle.
 +       st: Time stolen from a virtual machine. Prior to Linux 2.6.11, unknown.
 +
 +FIELD DESCRIPTION FOR DISK MODE
 +   Reads
 +       ​total:​ Total reads completed successfully
 +       ​merged:​ grouped reads (resulting in one I/O)
 +       ​sectors:​ Sectors read successfully
 +       ms: milliseconds spent reading
 +
 +   ​Writes
 +       ​total:​ Total writes completed successfully
 +       ​merged:​ grouped writes (resulting in one I/O)
 +       ​sectors:​ Sectors written successfully
 +       ms: milliseconds spent writing
 +
 +   IO
 +       cur: I/O in progress
 +       s: seconds spent for I/O
 +
 +FIELD DESCRIPTION FOR DISK PARTITION MODE
 +       ​reads:​ Total number of reads issued to this partition
 +       read sectors: Total read sectors for partition
 +       ​writes : Total number of writes issued to this partition
 +       ​requested writes: Total number of write requests made for partition
 +
 +FIELD DESCRIPTION FOR SLAB MODE
 +       ​cache:​ Cache name
 +       num: Number of currently active objects
 +       ​total:​ Total number of available objects
 +       size: Size of each object
 +       ​pages:​ Number of pages with at least one active object
 +       
 +</​code>​
vmstat.txt ยท Last modified: 2012/04/12 12:43 by k2patel