?????????????

1
????
?????????
2
???? ?????????
16.1 ?????? 16.1.1 ???????? 16.1.2 ?????? 16.2 ?????? 16.2.1 ?????? 16.2.2 ???
3
???? ?????????(2)
????
??????????? ???????????
4
16.1.1 ????????
vmstat sar nice ps
CPU???
Y
N
vmstat ps lsps svmon
iostat lslv filemon fileplace
?????
I/O???
Y
Y
N
N
netstat nfsstat
nfso no ifconfig netpmon
?????
Y
N
More test
5
16.1.2 ??????
iostat
vmstat
sar
topas
no
svmon
6
iostat
????I/O????
7
iostat(2)
TTY?I/O?? -tin ???tty???????? -tout ????tty???
??? (??tty??????(real)??? (pseudo)?tty)
8
iostat(3)
CPU????? - user,?????????? -
sys,??????CPU?? - idle,??CPU???? -
iowait,??CPU??I/O?????
9
iostat(4)
?? ??idle???????iowait?????,??25,????????I/O?
?????
????iowait?????????

1. ??????????swap???????,????????????? I/O??
2. ????????????
3. ???fragment???

10
iostat(5)
?????? - tm_act ????????active?????? -tps
?????????????????? -Kb_read Kb_wrtn
??????????iostat?????????? ???read?write????
?,??kb
11
vmstat
????????????
12
vmstat(2)

• CPU??????? id wa
• ?CPU???????????
• (99929586796)10056056.16(?)

13
vmstat(3)
kthr ?? -r ??CPU??????? ?r ????,??CPU?? -b ??
I/O????????? ?b ????,????I/O????
14
vmstat(4)

• CPU ??
• ??sy ?us??????????100,????CPU?????,??????r
  ??????1
• ????
• ????,???????,??pi(page-in )?po(page-out )
  ?????0,??avm ?fre ?????????,fre ????.

15
sar
??????????
????????????
16
topas
??????CPU??
17
no
????????
????????
no ??????????,??????
18
svmon
svmon ??????????????????
?????????,????????????????????????
19
16.2.1 ??????
errpt
diag
20
errpt ??
???????????
21
errpt ????

• ???????????
• errpt a
• ??????????????
• errpt -a -j E18E984F

22
diag ??
23
diag ??(2)

• ?????????????
• ???????

24
Telnet????

• ???????????ping????,??telnet???,?????????,??????
  
• inetd???????startsrc s inetd????
• ???????chps -s??????
• ??telnet??????????,?????/?/tmp?/var????????,?df
  ????

25
16.2.2 ???(1)
1????CD-ROM?????,?????diagnostics
??,?????????????,??????????

1. The battery on the machine is bad
2. The root volume group is corrupt
3. The low-level debugger is not enabled
4. A hardware problem with the CD-ROM

26
???(2)
2??????????????,????????????????,it
fails?????,?????,?????????

1. Replace the tape drive
2. Run cfgmgr to reconfigure the tape device
3. Check the error log for tape drive errors
4. Use SMIT to change the compression attribute on
   the tape device

27
???(3)
3?A user is able to get a login prompt for the
server but gets a failed login error message when
trying to login with an ID. Which of the
following is the most likely cause of this
problem?

1. The hard drive is bad
2. The /home file system is full
3. The server is low on paging space
4. User has entered an invalid ID or password

28
???(4)
4?what is the average CPU idle time as a
percentage?

1. 45.5
2. 75.3
3. 44.04
4. 73.4

29
???(5)
5?What can be concluded from this output?

1. The machine is CPU bound
2. The machine needs memory optimized
3. The machine needs a FDDI card installed
4. A user program is causing unnecessary paging

30
???(6)
?? 1?D 2?C 3?D
4?D 5?A