系统统计
1.prtconf 系统信息
prtconf –V 显示OBP版本
2./usr/platform/sun4u/sbin/prtdiag -v
显示系统信息(包括内存，CPU，OBP版本等)
3.sysdef  系统信息
sysdef –i  显示可调内核参数的设置
4.eeprom  显示机器IDPROM变量
5.vmstat  监视CPU和内存

# vmstat
procs     memory            page            disk
faults      cpu
r b w   swap  free  re  mf pi po fr de sr f0 s0 s1 s6
in   sy   cs us sy id
0 1 0 557136 11544   2  77 278 166 235 0 9 0 32  0 13
301  472  142  2  5 94
5. mpstat  监视多个CPU状态
6. # mpstat
CPU minf mjf  xcal  intr ithr  csw icsw migr smtx  srw syscl  usr
sys  wt idl
15    0  400  199   142    6    0    0   0   470    2   4     64
29

变量 说明 变量 说明
CPU  CPU ID migr
Minf 轻微故障(minor faults) smtx
Mjf  重要故障(major faults) srw
Xcal 处理机间的调用 syscl 系统调用次数
Intr 中断数 usr 用户时间所占百分比
Ithr 线程中断数（不包括时钟中断） sys 系统时间所占百分比
csw 上下文切换次数 wt 等待时间所占百分比
icsw 强制的上下文切换次数 idle 空闲时间所占百分比

7.iostat  监视磁盘状态
# iostat
tty          fd0           sd0           sd1
sd6          cpu
tin tout kps tps serv  kps tps serv  kps tps serv
kps tps serv  us sy wt id
0   69   0   0    0  326  32   76    0   0    4
193  13   70   2  5 65 29

tin us
tont sy
bps wt
tps id
serv


8.uptime 显示系统运行时间以及在过去的15分钟内系统的负载情况
# uptime
4:23pm  up  1:15,  1 user,  load average: 0.10, 0.13,
0.12





/etc/system
set rstchown = 0          ;users can chown files
set ngroups_max = 32      ;设置每个用户最大组数为32，但可能引起NFS兼容问题
;因为典型NFS Servers
set pt_cnt = ;        ;系统伪终端
set hires_tick = 1        ;设置频率为1000
set rlim_fd_max = 4096    ;设置文件描述符硬限制
set rlim_fd_cur = 1024    ;设置文件描述符软限制
set maxuprc  = ;      ;设置每个用户最大进程数
set maxnprocs= ;      ;设置最大进程数（当前最大为3000）

2.Making boot device alias In case system can not boot fromprimary disk  and it is needed to make another boot disk to access thedata , nvalias command is used . nvalias command makes the devicealias  and assigns an alternate name to a physical disk. Physicaladdress of target disk is required  which can be had by show-disk command on ok>.
ok>nvaliasdisk7 /iommu@f,e0000000/sbus@f,e0001000/dma@3,81000/esp@3,80000/sd2,0 The new aliased disk can be named as boot disk or can be used for booting by refering its name . ok> setenv boot-device disk7 ok>reset or ok> boot disk7
3."Timeout waiting for ARP/RARP packet"? At ok> type printenv and look for these parameters .
  boot-device           disk
  mfg-switch?           false
  diag-switch?          false if you see "boot-device net " or true value for the other two parameter change it to the values above. In case you wants to boot fromnetwork make sure your client is properly configured in boot server andnetwork connections & configuration are proper.
4."The file just loaded does not appear to be executable." Boot block on the hard disk is corrupted .Boot the system in single user mode with cdrom and reinstall boot block . #installboot /usr/platform/`uname -i`/lib/fs/ufs/bootblk /dev/rdsk/c0t3d0s0 5."bootblk: can't find the boot program" boot block can not find the bootprograme - ufsboot in Solaris .Either ufsboot is missing or corrupted .In such cases it can be restored from the cdrom after booting fromcdrom & mounting the hard disk  # cp /platform/`uname -i`/ufsboot /mnt/platform/`uname -i`
6."boot: cannot open kernel/unix" Kernel directory or unix kernelfile in this directory is not found .Probably deleted during fsck ordeleted by mistake .Copy it from the cdrom or restore from the backuptape. # cp /platform/`uname -i`/kernel/unix /mnt/platform/`uname -i`/kernel
7."Error reading ELF header."? Kernel directory or unix kernel file in this directory is corrupted.Copy it from the cdrom or restore from the backup tape. # cp /platform/`uname -i`/kernel/unix /mnt/platform/`uname -i`/kernel
8."Cannot open '/etc/path_to_inst'" System can not find the /etc/path_to_install file .It might be missing or corrupted and needs to be rebuild. To rebuild this file  boot the system with  -ar option : ok>boot -ar Press enter to select default values for the questions  asked during booting and select yes to rebuild /etc/path_to_install The /etc/path_to_inst on your system does not exist or is empty. Do you want to rebuild this file [n]? y system will continue booting after rebuilding the file.
9."Can't stat /dev/rdsk/c0t3d0s0" When booted from cdrom  and donefsck the root partition comes out to be fine but on booting from rootdisk this error occurs. The device name for / is missing from /dev/dskdirectory and to resolve the issue /dev & /devices directories hasto be restored from root backup tapes .