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iostat as a tool for generating disk IO

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Operating Systems Solaris iostat as a tool for generating disk IO
# 1  
Old 06-29-2010
iostat as a tool for generating disk IO
Hi All

Currently i had a server directly connect to the EMC box.
The EMC storage is a FC Direct Attached Storage to the server without going through SAN switches

And i had download theDaily data file in /var/adm/sa/sardd

But i not sure which one in /var/adm/sa/sardd is the correct information i need to get for the I/O report

kindly advise !

Thanks =)


---------- Post updated 06-29-10 at 02:36 PM ---------- Previous update was 06-28-10 at 03:12 PM ----------

Code:
0:00:00	device	%busy	avque	r+w/s	blks/s	avwait	avserv

0:05:00	md0	2	0.1	4	31	3.7	30.7
	md1	0	0	0	0	0	0
	md3	1	0	1	17	3	18.3
	md10	2	0.1	4	31	0	28.4
	md11	0	0	0	0	0	0
	md13	1	0	1	17	0	13.9
	md20	1	0.1	3	6	0	26.4
	md21	0	0	0	0	0	0
	md23	1	0	1	17	0	12.7
	nfs1	0	0	0	0	0	0
	nfs2	0	0	0	0	0	0
	nfs3	0	0	0	0	0	0
	nfs4	0	0	0	0	0	0
	nfs5	0	0	0	0	0	0
	sd0	4	0.2	7	53	0	24.1
	sd0,a	2	0.1	4	31	0	28.3
	sd0,b	0	0	0	0	0	0
	sd0,c	0	0	0	0	0	0
	sd0,d	1	0	1	17	0	13.9
	sd0,h	2	0	2	2	0	22
	sd2	2	0.1	4	23	0	22.3
	sd2,a	1	0.1	3	6	0	26.4
	sd2,b	0	0	0	0	0	0
	sd2,c	0	0	0	0	0	0
	sd2,d	1	0	1	17	0	12.6
	sd2,h	0	0	0	0	0	0
	sd4	0	0	0	0	0	0
	ssd0	7	0.1	59	4138	0	1.9
	ssd0,c	7	0.1	59	4138	0	1.9
	ssd0,h	0	0	0	0	0	0
	ssd1	0	0	32	2	0	0
	ssd4	6	0.1	51	4229	0	1.9
	ssd4,c	6	0.1	51	4229	0	1.9
	ssd4,h	0	0	0	0	0	0
	ssd5	0	0	32	2	0	0
	st2	0	0	0	0	0	0

is it the above is the I/O performance data.
but how do i know those sd0, sd1 .... is refer to which device?
please help ! =)
# 2  
Old 06-29-2010
I think you should check /etc/path_to_inst file.
# 3  
Old 06-29-2010
Quote:
Originally Posted by SmartAntz
but how do i know those sd0, sd1 .... is refer to which device?
Here is one way:
Code:
pr -tm <(iostat -x | tail +3 | nawk '{print $1}') <(iostat -xn | tail +3 | nawk '{print $11}')

# 4  
Old 06-29-2010
thanks for help bartus11

but i currently still not able to understand and no idea to this file.
please advise =)

Code:
root@mercury # cat path_to_inst
#
#       Caution! This file contains critical kernel state
#
"/pseudo" 0 "pseudo"
"/scsi_vhci" 0 "scsi_vhci"
"/options" 0 "options"
"/pci@8,4000" 0 "pcicmu"
"/pci@8,4000/ebus@1" 0 "ebus"
"/pci@8,4000/ebus@1/serial@14,400000" 0 "su"
"/pci@8,4000/ebus@1/scfc@14,200000" 0 "scfd"
"/pci@8,4000/ebus@1/panel@14,280030" 0 "oplpanel"
"/pci@0,600000" 0 "px"
"/pci@0,600000/pci@0" 0 "pxb_plx"
"/pci@0,600000/pci@0/pci@8" 1 "pxb_plx"
"/pci@0,600000/pci@0/pci@8/pci@0" 0 "px_pci"
"/pci@0,600000/pci@0/pci@8/pci@0/scsi@1" 0 "mpt"
"/pci@0,600000/pci@0/pci@8/pci@0/scsi@1/sd@0,0" 0 "sd"
"/pci@0,600000/pci@0/pci@8/pci@0/scsi@1/sd@1,0" 2 "sd"
"/pci@0,600000/pci@0/pci@8/pci@0/scsi@1/sd@3,0" 4 "sd"
"/pci@0,600000/pci@0/pci@8/pci@0/scsi@1/st@2,0" 2 "st"
"/pci@0,600000/pci@0/pci@8/pci@0/network@2" 0 "bge"
"/pci@0,600000/pci@0/pci@8/pci@0/network@2,1" 1 "bge"
"/pci@0,600000/pci@0/pci@8/pci@0,1" 1 "px_pci"
"/pci@0,600000/pci@0/pci@8/pci@0,1/SUNW,XVR-100@1" 0 "pfb"
"/pci@0,600000/pci@0/pci@9" 2 "pxb_plx"
"/pci@0,600000/pci@0/pci@9/SUNW,qlc@0" 0 "qlc"
"/pci@0,600000/pci@0/pci@9/SUNW,qlc@0/fp@0,0" 4 "fp"
"/pci@0,600000/pci@0/pci@9/SUNW,qlc@0/fp@0,0/ssd@w5006016141e0a4cd,0" 0 "ssd"
"/pci@0,600000/pci@0/pci@9/SUNW,qlc@0/fp@0,0/ssd@w5006016841e0a4cd,0" 2 "ssd"
"/pci@0,600000/pci@0/pci@9/SUNW,qlc@0/fp@0,0/ssd@w5006016141e0a4cd,1" 4 "ssd"
"/pci@0,600000/pci@0/pci@9/SUNW,qlc@0,1" 1 "qlc"
"/pci@0,600000/pci@0/pci@9/SUNW,qlc@0,1/fp@0,0" 0 "fp"
"/pseudo-console" 0 "oplmsu"
"/pci@2,600000" 2 "px"
"/pci@2,600000/SUNW,qlc@0" 2 "qlc"
"/pci@2,600000/SUNW,qlc@0/fp@0,0" 1 "fp"
"/pci@2,600000/SUNW,qlc@0/fp@0,0/ssd@w5006016841e0a4cd,0" 1 "ssd"
"/pci@2,600000/SUNW,qlc@0/fp@0,0/ssd@w5006016141e0a4cd,0" 3 "ssd"
"/pci@2,600000/SUNW,qlc@0/fp@0,0/ssd@w5006016841e0a4cd,1" 5 "ssd"
"/pci@2,600000/SUNW,qlc@0,1" 3 "qlc"
"/pci@2,600000/SUNW,qlc@0,1/fp@0,0" 2 "fp"
"/pseudo-mc@200,200" 0 "mc-opl"
"/pci@1,700000" 1 "px"
"/pci@1,700000/network@0" 0 "nxge"
"/pci@1,700000/network@0,1" 1 "nxge"
"/pci@1,700000/network@0,2" 2 "nxge"
"/pci@1,700000/network@0,3" 3 "nxge"
"/pci@3,700000" 3 "px"
"/iscsi" 0 "iscsi"
root@mercury #



---------- Post updated at 03:56 PM ---------- Previous update was at 03:51 PM ----------
Quote:
Originally Posted by jlliagre
Here is one way:
Code:
pr -tm <(iostat -x | tail +3 | nawk '{print $1}') <(iostat -xn | tail +3 | nawk '{print $11}')

erm.....
when i run the command

it come out the error, because me still try to learn the scripts, now still not very good in this area. Smilie please help

Code:
root@mercury # pr -tm <(iostat -x | tail +3 | nawk '{print $1}') <(iostat -xn | tail +3 | nawk '{print $11}')
syntax error: `(' unexpected

# 5  
Old 06-29-2010
Well, in theory you should be able to identify devices by looking at their device path, and comparing device driver name from "device" column in iostat output with last column of that file.
# 6  
Old 06-29-2010
i try to run the below command, it show me this, but i still no idea sd0, sd1 .... is refer to which device Smilie
Code:
root@mercury # iostat -xtc
                 extended device statistics                    tty         cpu
device    r/s    w/s   kr/s   kw/s wait actv  svc_t  %w  %b  tin tout  us sy wt id
md0       2.0    3.0   23.2    2.9  0.0  0.1   23.9   1   2    0   46  22  7  0 70
md1       0.2    0.0    1.7    2.0  0.0  0.0    5.3   0   0
md3       0.1    1.4    0.5    9.5  0.0  0.0   16.5   0   1
md10      2.0    3.0   23.2    2.9  0.0  0.1   19.1   0   2
md11      0.2    0.0    1.7    2.0  0.0  0.0    5.0   0   0
md13      0.1    1.4    0.5    9.5  0.0  0.0   12.4   0   1
md20      0.0    3.0    0.0    2.9  0.0  0.1   24.9   0   1
md21      0.0    0.0    0.0    2.0  0.0  0.0   22.2   0   0
md23      0.0    1.4    0.0    9.5  0.0  0.0    9.4   0   1
sd0       2.3    5.9   25.4   15.1  0.0  0.1   18.4   0   4
sd2       0.0    4.4    0.0   14.4  0.0  0.1   19.9   0   2
sd4       0.0    0.0    0.0    0.0  0.0  0.0    0.0   0   0
ssd0    120.2   51.4 4666.4 2836.7  0.0  0.4    2.5   0  19
ssd1      0.1    0.0    0.0    0.0  0.0  0.0    0.0   0   0
ssd4     84.6  105.4 2688.7 1529.4  0.0  0.3    1.3   0  14
ssd5      0.1    0.0    0.0    0.0  0.0  0.0    0.0   0   0
st2       0.0    0.0    0.0    0.0  0.0  0.0    0.0   0   0
nfs1      0.0    0.0    0.0    0.0  0.0  0.0    0.0   0   0
nfs2      0.0    3.9    0.0  125.8  0.1  0.1   50.1   1   1
nfs3      0.0    0.0    0.0    0.0  0.0  0.0    6.5   0   0
nfs4      0.0    0.0    0.0    0.0  0.0  0.0    3.6   0   0
nfs5      0.1   12.4    1.9  396.1  0.4  0.4   59.9   4   6
root@mercury #

# 7  
Old 06-29-2010
To assign disk driver names to their logical names (c0t0d0s0 etc) run "format". It will display list of disks with their device path and logical name.
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