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发表于 2014-02-12 10:47 |只看该作者 |倒序浏览

我的一台服务器系统是Solaris 11.1，装的数据库Oracle 11.2，运行一段时间后，df -h看到的swap分区越来越小，从80G降到28G；曾出现过/tmp full的报错；下面是不同命令看到的swap分区的情况：swap -lh看到的是物理swap，但是为什么一点没用到；top看到的明明有64G free，为什么df -h只有28G？
root@cdistdb1:~# df -h
Filesystem          Size Used  Available Capacity  Mounted on
rpool/ROOT/solaris-3 272G 19G    107G 15% /
/devices                0K    0K       0K    0% /devices
/dev                   0K    0K       0K    0% /dev
ctfs                   0K    0K       0K    0% /system/contract
proc                   0K    0K       0K    0% /proc
mnttab                0K    0K       0K    0% /etc/mnttab
swap                   28G 52M       28G    1% /system/volatile
objfs                   0K    0K       0K    0% /system/object
sharefs                0K    0K       0K    0% /etc/dfs/sharetab
fd                      0K    0K       0K    0% /dev/fd
rpool/ROOT/solaris-3/var
                     272G 1.3G    107G    2% /var
swap                   28G 104K       28G    1% /tmp
rpool/VARSHARE       272G 4.0G    107G    4% /var/share
rpool/export          272G 32K    107G    1% /export
rpool/export/home    272G 1.0M    107G    1% /export/home
rpool/export/home/apadmin
                     272G 35K    107G    1% /export/home/apadmin
rpool/export/home/db20
                     272G 94M    107G    1% /export/home/db20
rpool/export/home/nsumsmgr
                     272G 35K    107G    1% /export/home/nsumsmgr
rpool/export/home/oracle
                     272G 8.0G    107G    7% /export/home/oracle
rpool/export/home/vermgr
                     272G 891K    107G    1% /export/home/vermgr
rpool                272G 73K    107G    1% /rpool
/dev/lofi/8192       781M 3.9M    730M    1% /global/.devices/node@2
172.16.1.154:/t_hulft
                     512G 62G    450G 13% /opt/ecrb/hulft
172.16.1.156:/c_orashare
                     298G 9.3G    289G    4% /opt/oracle/cdist/share
172.16.1.156:/c_rls 298G 9.3G    289G    4% /rls
172.16.1.158:/c_logbk
                     104G 654M    104G    1% /log_backup
172.16.1.158:/c_dbbk 104G 654M    104G    1% /db_backup
172.16.1.158:/c_dbbk2
                     104G 654M    104G    1% /db_backup2
172.16.1.162:/cdistexp
                     112G 14G       97G 13% /opt/oracle/expdump
cdist_oradg01/c_appl 2.0T 24M    855G    1% /appl
cdist_oradg01       2.0T 1.1T    855G 58% /database
cdist_oradg01/c_batchshare
                     2.0T 944M    855G    1% /opt/oracle/cdist/batch_share
cdist_oradg01/c_javajob
                     2.0T 50M    855G    1% /opt/oracle/javajob
cdist_oradg01/c_proc 2.0T 1.2M    855G    1% /opt/oracle/proc
cdist_oradg01/c_tools
                     2.0T 189K    855G    1% /tools
cdist_jobdg01          49G 5.0M       49G    1% /opt/jobcenter
/dev/lofi/4096       781M 3.9M    730M    1% /global/.devices/node@1
root@cdistdb1:~# swap -sh
total: 45G allocated + 111G reserved = 155G used, 28G available
root@cdistdb1:~# swap -lh
swapfile          dev swaplo blocks    free
/dev/zvol/dsk/rpool/swap 285,2       8K    64G    64G
root@cdistdb1:~# top

last pid: 26225;  load avg:  2.19,  1.74,  1.80;  up 2+12:22:24                                                          09:45:02
265 processes: 257 sleeping, 3 zombie, 5 on cpu
CPU states: 98.3% idle,  1.6% user,  0.1% kernel,  0.0% iowait,  0.0% swap
Kernel: 5109 ctxsw, 733 trap, 5736 intr, 12881 syscall, 428 flt
Memory: 256G phys mem, 146G free mem, 64G total swap, 64G free swap