This shows you the differences between two versions of the page.
— |
vmstat [2020/08/10 02:35] (current) |
||
---|---|---|---|
Line 1: | Line 1: | ||
+ | ====== 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> |