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Command to check the busy % for a hard disk device like hdisk5

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Operating Systems AIX Command to check the busy % for a hard disk device like hdisk5
# 1  
Old 01-09-2014
Command to check the busy % for a hard disk device like hdisk5
Please help with command to check the busy % for a hard disk device like hdisk5


Best regards,
Vishal
# 2  
Old 01-09-2014
Have a look at the manual page for df if you mean full, or sar for IO performance - probably the -d flag, but you haven't given us the OS, so it's a bit difficult to be sure.



Robin
# 3  
Old 01-09-2014
u can also use topas
# 4  
Old 01-09-2014
This is AIX .Below is topas information but it's not giving for each hdd .Please help

Code:
CPU     User% Kern% Wait% Idle%                 Reads      1613  Rawin         0
Total     6.4   4.7  18.6  70.3                 Writes       26  Ttyout      465
                                                Forks         4  Igets         0
Network    BPS  I-Pkts  O-Pkts    B-In   B-Out  Execs         4  Namei      1743
Total     282K   270.5   181.0    208K   74.5K  Runqueue   5.00  Dirblk        0
                                                Waitqueue   0.0
Disk    Busy%      BPS     TPS  B-Read  B-Writ                   MEMORY
Total     7.8    5.63M   692.5   5.31M    322K  PAGING           Real,MB   12288
                                                Faults     4122  % Comp     73
FileSystem          BPS    TPS  B-Read  B-Writ  Steals        0  % Noncomp  17
Total             7.16M  1.59K   6.86M    308K  PgspIn        0  % Client   17
                                                PgspOut       0
Name           PID  CPU%  PgSp Owner            PageIn        0  PAGING SPACE
osysmond    9175044  1.4  121M root             PageOut       0  Size,MB    8192
oracle     43778058  1.2 12.0M oracle           Sios          0  % Used     21
oraroota    9568384  0.9 32.4M root                              % Free     79
oracle     23199944  0.8 9.57M oracle           NFS (calls/sec)
oracle     31129738  0.7 10.9M oracle           SerV2         0  WPAR Activ    0
oracle     55771278  0.6 12.1M oracle           CliV2         0  WPAR Total    0
oracle     24183012  0.6 10.9M oracle           SerV3         0  Press: "h"-help
oracle     49479914  0.4 12.1M oracle           CliV3         0         "q"-quit
oraagent    9830536  0.3 70.6M oracle


Best regards,
Vishal
# 5  
Old 01-09-2014
You could try nmon

After it's started, press a lower case d


Still probably better with sar -d 5 | grep "hdisk5 " which you can trap to a file and shovel into something like Excel to draw graphs if that is useful to understand.

This will give you the IO rates every 5 seconds. Colume order is:-
Code:
time      device    %busy    avque    r+w/s    Kbs/s   avwait   avserv

The time may not be displayed though. If you want to force a timestamp, you might need to do something like:-
Code:
echo "`date +%d/%m/%Y  %T`  `sar -d 5 2 | grep "hdisk5 " | tail -1` > logfile




Robin
Last edited by rbatte1; 01-09-2014 at 10:07 AM..
# 6  
Old 01-09-2014
when you are in the topas screen
type d

---------- Post updated at 02:58 PM ---------- Previous update was at 02:58 PM ----------

man topas :

Quote:
Physical disks
This subsection displays a list of hot physical disks. The maximum amount of physical disks displayed is the number of hot physical disks being monitored as specified with the -d flag. A smaller number of physical disks
will be displayed if other subsections are also being displayed. Pressing the d key turns off this subsection. Pressing the d key again shows a one-line report summary of the activity for all physical disks.
---------- Post updated at 02:59 PM ---------- Previous update was at 02:58 PM ----------

Code:
Topas Monitor for host:    delta                EVENTS/QUEUES    FILE/TTY
Thu Jan  9 14:59:48 2014   Interval:  2         Cswitch     233  Readch     4079
                                                Syscall     117  Writech    3252
CPU  User%  Kern%  Wait%  Idle%  Physc   Entc   Reads        29  Rawin         0
ALL    0.3    0.7    0.0   99.0   0.01    1.6   Writes        4  Ttyout      830
                                                Forks         0  Igets         0
Network  KBPS   I-Pack  O-Pack   KB-In  KB-Out  Execs         0  Namei        11
Total     2.2      4.5     6.0     0.2     1.9  Runqueue    0.0  Dirblk        0
                                                Waitqueue   0.0
Disk    Busy%     KBPS     TPS KB-Read KB-Writ                   MEMORY
hdisk0    0.0     0.0      0.0    0.0     0.0   PAGING           Real,MB     704
cd0       0.0     0.0      0.0    0.0     0.0   Faults        0  % Comp     95
cd1       0.0     0.0      0.0    0.0     0.0   Steals        0  % Noncomp   1
                                                PgspIn        0  % Client    1
FileSystem        KBPS     TPS KB-Read KB-Writ  PgspOut       0
Total              4.0    27.5    4.0    0.0    PageIn        0  PAGING SPACE
                                                PageOut       0  Size,MB     512
Name            PID  CPU%  PgSp Owner           Sios          0  % Used      6
topas        516342   0.4   1.9 root                             % Free     94
getty        311500   0.1   0.6 root            NFS (calls/sec)
nfsd         286882   0.1   0.2 root            SerV2         0  WPAR Activ    0
sshd         467026   0.0   1.1 root            CliV2         0  WPAR Total    0
gil           53274   0.0   0.1 root            SerV3         0  Press: "h"-help
random       180340   0.0   0.1 root            CliV3         0         "q"-quit
java         278724   0.0  51.1 root
java         213174   0.0  36.6 pconsole
rpc.lock     225282   0.0   0.2 root
pilegc        36882   0.0   0.1 root
dirsnmpd     172186   0.0   7.1 root
netm          49176   0.0   0.1 root
syncd         98440   0.0   0.6 root
lrud          16392   0.0   0.1 root
topasrec     307440   0.0   0.8 root
IBM.CSMA     360636   0.0   2.2 root
sendmail     200860   0.0   1.1 root
init              1   0.0   0.7 root
cimserve     315578   0.0  23.6 root
xmgc          40980   0.0   0.1 root

# 7  
Old 01-09-2014
Note that the interpretation of metrics like disk utilization's busy and util should be different for modern architectures that use external storage (SAN, NAS etc.).
This post talks about Linux, but I suppose that AIX's not much different in this regard.
This User Gave Thanks to radoulov For This Post:
rbatte1
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