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Linux vmstat new options-vmstat的新选项

看到Kamus写的Red Hat Magazine, Issue #11 发布,从其中的一篇文章:Performance tuning tools: ps, top, sar, iostat, and vmstat发现Redhat中,vmstat增加了几个选项。

1.vmstat -d选项
此选项的注释是:需要2.5.70及以上内核
The -d reports disk statistics (2.5.70 or above required)
我们看下该命令输出:
[root@danaly ~]# vmstat -d 2|grep -v ram
disk- ------------reads------------ ------------writes----------- -----IO------
       total merged sectors      ms  total merged sectors      ms    cur    sec
hda        0      0       0       0      0      0       0       0      0      0
cciss/c0d0  28568  86702 1207480  454583 292728 652992 7565732 6802794      0   2038
cciss/c0d1 120535  10905 3990350  127147 492529  57565 20825715 8258249      0   5151
fd0        0      0       0       0      0      0       0       0      0      0
md0        0      0       0       0      0      0       0       0      0      0
disk- ------------reads------------ ------------writes----------- -----IO------
       total merged sectors      ms  total merged sectors      ms    cur    sec
hda        0      0       0       0      0      0       0       0      0      0
cciss/c0d0  28568  86702 1207480  454583 292753 653042 7566332 6803437      0   2038
cciss/c0d1 120535  10905 3990350  127147 492532  57565 20825727 8258300      0   5152
fd0        0      0       0       0      0      0       0       0      0      0
md0        0      0       0       0      0      0       0       0      0      0
disk- ------------reads------------ ------------writes----------- -----IO------
       total merged sectors      ms  total merged sectors      ms    cur    sec
hda        0      0       0       0      0      0       0       0      0      0
cciss/c0d0  28568  86702 1207480  454583 292753 653042 7566332 6803437      0   2038
cciss/c0d1 120535  10905 3990350  127147 492535  57565 20825799 8258333      0   5152
fd0        0      0       0       0      0      0       0       0      0      0
md0        0      0       0       0      0      0       0       0      0      0

通过此命令可以查看磁盘的统计数据。

2.vmstat -s选项
此选项一次性显示内存使用的状态信息:
The -s switch displays a table of various event counters and memory statistics. This display does not repeat.

[root@danaly ~]# vmstat -s
      2075016  total memory
      1817776  used memory
      1270452  active memory
       469040  inactive memory
       257240  free memory
       140640  buffer memory
      1290140  swap cache
      4192956  total swap
            0  used swap
      4192956  free swap
       108739 non-nice user cpu ticks
        10913 nice user cpu ticks
        40472 system cpu ticks
    155852897 idle cpu ticks
       658151 IO-wait cpu ticks
         5063 IRQ cpu ticks
         4948 softirq cpu ticks
      2601019 pages paged in
     14215470 pages paged out
            0 pages swapped in
            0 pages swapped out
    407171759 interrupts
     34676601 CPU context switches
   1126835178 boot time
       162802 forks


3.vmstat -D选项
一次性显示磁盘统计数据.
[root@danaly ~]# vmstat -D
           21 disks 
           15 partitions 
       149249 total reads
        97607 merged reads
      5202390 read sectors
       581748 milli reading
       787084 writes
       713833 merged writes
     28436523 written sectors
     15105557 milli writing
            0 inprogress IO
         7204 milli spent IO

当然还有很多,不列举了。
这世界变化快啊,一天不学习就不行了:(

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By eygle on 2005-09-20 23:25 | Comments (0) | System | 443 |


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