148584

 

pgpgin/s: 换入页的KB数

pgpgout/s: 换出页的KB数

activepg: 内存中活动的页数

inadtypg: Number of inactive dirty (modified or potentially modified) pages in memory.

inaclnpg: Number of inactive clean (not modified) pages in memory.

inatarpg: "Inactive  target"  number  of  pages.This field is a 1-minute floating average of the number of

                     pages the system needs to "steal" every second in order to satisfy memory demand.

 

如果系统总是存在大量的换出页的KB数,说明系统需要内存.当然，inatarpg参数也能说明问题。

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3)磁盘I/O

 

  我们可以用iostat来获得系统磁盘的数据.

  [stone@localhost stone]$ iostat

Linux 2.4.20-19.7 (localhost.localdomain)       01/06/2005

 

avg-cpu:  %user   %nice    %sys   %idle

           0.09    0.00    0.21   99.70

 

Device:        tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn

dev3-1        0.77         4.65        17.03   11788068   43140248

 

tps:Indicate  the number of transfers per second that were issued to the device

Blk_read/s:Indicate  the  amount  of  data read from the drive expressed in a number of blocks per second

Blk_wrtn/s:Indicate the amount of data written to the drive expressed in a number of blocks  per  second.

Blk_read:The total number of blocks read.

Blk_wrtn:The total number of blocks written.

 

[stone@localhost stone]$ iostat -x

Linux 2.4.20-19.7 (localhost.localdomain)       01/06/2005

 

avg-cpu:  %user   %nice    %sys   %idle

           0.09    0.00    0.21   99.70

 

Device:  rrqm/s wrqm/s   r/s   w/s  rsec/s  wsec/s avgrq-sz avgqu-sz   await  svctm  %util

hdb        0.46   1.48  0.12  0.65    4.65   17.04    28.13     0.10  118.90 207.70   1.60

hdb1       0.00   0.00  0.00  0.00    0.00    0.00     9.52     0.00  128.76  88.84   0.00

hdb2       0.46   1.48  0.12  0.65    4.65   17.01    28.17     0.09  117.58  13.39