Parsing iostat in real time Post: 302419636

Sponsored Content

Top Forums Shell Programming and Scripting Parsing iostat in real time Post 302419636 by fastergrace on Friday 7th of May 2010 04:20:25 PM

05-07-2010

Registered User

Parsing iostat in real time

I'm trying to write a script that will parse the output of the iostat command in real time and place the output in csv file(s). I do have a programming background, but am relatively new to shell so I'm having difficulties determining how to proceed.

The cpu stats will go into one output file, and the device stats into another. I've a mind to take the output line by line, parse the string, format it, and write the output to its respective csv file. Maybe I could use if/else or a case statement to determine what to do with the string. I think it would be a significant bit less complicated if I didn't have to do this in real time.

Really, I'm just hoping someone can point me to some good resources to guide me to get this done. It's a little more complicated than the basic examples I've found so far. Any and all help is appreciated.

fastergrace

View Public Profile for fastergrace

Find all posts by fastergrace

6 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

EPOCH to real time?

hi all :confused: i am wondering if there is a way to convert from EPOCH time to the standard tim, may be using a script or some thing else??????? thanks............................

2. Solaris

Real time problems

Hi friends, I am new to solaris and looking for a job, when ever i attend interview i get most of the questions on real time problems, every one sak me the same questions what are the problems you face daily.. and what are the types? i know few like, disk extension,swap memory increasing,...

3. Shell Programming and Scripting

Shell script to convert epoch time to real time

Dear experts, I have an epoch time input file such as : - 1302451209564 1302483698948 1302485231072 1302490805383 1302519244700 1302492787481 1302505299145 1302506557022 1302532112140 1302501033105 1302511536485 1302512669550 I need the epoch time above to be converted into real...

4. UNIX for Dummies Questions & Answers

Real time processing

Hi Not sure if this can be achieved by unix , but still would like to know if there is any way by which I can do the below given logic cat sam1 > out1 cat sam2 > out2 when either one of this finished the the next file shd be written in that file, meaning cat sam3 >> out1/out2...

5. Shell Programming and Scripting

Parsing iostat data

Hello, I searched the forum and found the parsing iostat data in real time but that does not help me. What I would like to do is to parse the iostat data that has been gathered. Below is an example of the iostat output: System configuration: lcpu=4 drives=5 ent=0.10 paths=20 vdisks=2 ...

6. Shell Programming and Scripting

Converting real time to epoch time

# date +%s -d "Mon Feb 11 02:26:04" 1360567564 # perl -e 'print scalar localtime(1360567564), "\n";' Mon Feb 11 02:26:04 2013 the epoch conversion is working fine. but one of my application needs 13 digit epoch time as input 1359453135154 rather than 10 digit epoch time 1360567564...

LEARN ABOUT V7

iostat

IOSTAT(1M)																IOSTAT(1M)

NAME

       iostat - report I/O statistics

SYNOPSIS

       iostat [ option ] ...  [ interval [ count ] ]

DESCRIPTION

       Iostat  delves into the system and reports certain statistics kept about input-output activity.	Information is kept about up to three dif-
       ferent disks (RF, RK, RP) and about typewriters.  For each disk, IO completions and number of words transferred are counted; for  typewrit-
       ers  collectively, the number of input and output characters are counted.  Also, each sixtieth of a second, the state of each disk is exam-
       ined and a tally is made if the disk is active.	The tally goes into one of four categories, depending on whether the system  is  executing
       in  user  mode, in `nice' (background) user mode, in system mode, or idle.  From all these numbers and from the known transfer rates of the
       devices it is possible to determine information such as the degree of IO overlap and average seek times for each device.

       The optional interval argument causes iostat to report once each interval seconds.  The first report is for  all time since  a  reboot  and
       each subsequent report is for the last interval only.

       The optional count argument restricts the number of reports.

       With  no  option  argument iostat reports for each disk the number of transfers per minute, the milliseconds per average seek, and the mil-
       liseconds per data transfer exclusive of seek time.  It also gives the percentage of time the system has spend in each of  the  four  cate-
       gories mentioned above.

       The following options are available:

       -t     Report the number of characters of terminal IO per second as well.

       -i     Report  the  percentage  of  time  spend in each of the four categories mentioned above, the percentage of time each disk was active
	      (seeking or transferring), the percentage of time any disk was active, and the percentage of time spent in `IO wait:' idle, but with
	      a disk active.

       -s     Report  the  raw	timing information: 32 numbers indicating the percentage of time spent in each of the possible configurations of 4
	      system states and 8 IO states (3 disks each active or not).

       -b     Report on the usage of IO buffers.

FILES

       /dev/mem, /unix

																	IOSTAT(1M)