[計(jì)算機(jī)]linux學(xué)習(xí)之--性能分析-資料下載頁(yè)
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【正文】 f no delay is specified, only one report is printed with theaverage values since boot.count is the number of updates. If no count is specified and delay is defined, count defaults to infinity.The V switch results in displaying version information.FIELD DESCRIPTIONSProcsr: The number of processes waiting for run time.b: The number of processes in uninterruptable sleep.w: The number of processes swapped out but otherwise runnable. Thisfield is calculated, but Linux never desperation swaps.Memoryswpd: the amount of virtual memory used (kB).free: the amount of idle memory (kB).buff: the amount of memory used as buffers (kB).Swapsi: Amount of memory swapped in from disk (kB/s).so: Amount of memory swapped to disk (kB/s).IObi: Blocks sent to a block device (blocks/s).bo: Blocks received from a block device (blocks/s).Systemin: The number of interrupts per second, including the clock.cs: The number of context switches per second.: CPUThese are percentages of total CPU time.us: user timesy: system timeid: idle timeNOTESvmstat does not require special permissions.These reports are intended to help identify system bottlenecks. Linux vmstat does not count itself as a running process.All linux blocks are currently 1k, except for CDROM blocks which are 2k.FILES/proc/meminfo/proc/stat/proc/*/statSEE ALSOps(1), top(1), free(1)BUGSDoes not tabulate the block io per device or count the number of system calls.AUTHORWritten by Henry Ware al172@.Throatwobbler Ginkgo Labs 27 July 1994 VMSTAT(8)
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