[20140627]linux下顯示那個程式使用swap

[20140627]linux下顯示那個程式使用swap.txt

--要了解linux下那個程式使用交換:

for file in /proc/*/status ; do awk '/VmSwap|Name/{printf $2 " " $3}END{ print ""}' $file; done | sort -k 2 -n -r | less

for file in /proc/*/status
do
    awk '/VmSwap|Name/{printf $2 " " $3}END{ print ""}' $file
    echo $file
done | sort -k 2 -n -r | less

--最好使用smem命令:

SMEM(8)                                                                SMEM(8)

NAME
       smem - Report memory usage with shared memory divided proportionally.

SYNOPSIS
       smem [options]

DESCRIPTION
       smem reports physical memory usage, taking shared memory pages into account. Unshared memory is reported as the
       USS (Unique Set Size). Shared memory is divided evenly among the processes sharing that memory. The unshared
       memory (USS) plus a process's proportion of shared memory is reported as the PSS (Proportional Set Size). The USS
       and PSS only include physical memory usage. They do not include memory that has been swapped out to disk.

       Memory can be reported by process, by user, by mapping, or systemwide. Both text mode and graphical output are
       available.

# smem  -u
User     Count     Swap      USS      PSS      RSS
rpcuser      1      284        4       35      768
rpc          1      140      112      128      640
ntp          1      300      312      365     1204
root        27     5004    16300    17772    31692
oracle11g    38        0   231468   298472   963372

# smem  -w
Area                           Used      Cache   Noncache
firmware/hardware                 0          0          0
kernel image                      0          0          0
kernel dynamic memory       3459608    3311424     148184
userspace memory             315448     134996     180452
free memory                  149744     149744          0

--在生產系統測試1下,使用者連線多執行有點慢.

#  smem -u
User     Count     Swap      USS      PSS      RSS
stap-server  1     6060       24       31      792
rpcuser      1      228       68       74      752
rpc          1      112      160      171      704
root        24     6928    30296    31497    44136
oracle    2489   808760 12268960 12295238 58056528

#  smem -k -t -s swap

#  smem -k -t -s swap
  PID User     Command                         Swap      USS      PSS      RSS
  420 oracle   oraclehrp430 (LOCAL=NO)            0     3.7M     3.7M    18.3M
  501 oracle   oraclehrp430 (LOCAL=NO)            0     3.8M     3.8M    19.2M
  527 oracle   oraclehrp430 (LOCAL=NO)            0     5.4M     5.4M    24.2M
  645 oracle   oraclehrp430 (LOCAL=NO)            0     3.7M     3.7M    18.8M
  667 oracle   oraclehrp430 (LOCAL=NO)            0     4.2M     4.2M    22.0M
  813 oracle   oraclehrp430 (LOCAL=NO)            0     3.7M     3.7M    18.8M
....
23698 oracle   oraclehrp430 (LOCAL=NO)         7.1M    41.1M    41.1M    59.3M
19470 oracle   oraclehrp430 (LOCAL=NO)         8.2M    20.2M    20.2M    38.3M
5117 oracle   oraclehrp430 (LOCAL=NO)        12.0M    15.5M    15.5M    33.8M
6024 oracle   oraclehrp430 (LOCAL=NO)        16.5M     2.5M     2.5M    20.0M
28365 oracle   oraclehrp430 (LOCAL=NO)        17.8M    41.5M    41.5M    56.3M
28604 oracle   oraclehrp430 (LOCAL=NO)        18.8M   132.0K   141.0K    17.7M
29539 oracle   oraclehrp430 (LOCAL=NO)        22.5M    30.7M    30.7M    45.5M
7024 oracle   oraclehrp430 (LOCAL=NO)        28.5M    31.8M    31.8M    51.2M
-------------------------------------------------------------------------------
2510 6                                      787.7M    11.4G    11.4G    55.0G

--慢慢看看man文件.