The examples did not use anything exotic like that. This was "direct" attached
DASD and the write misses were occasionally half a second and that showed up in
the SMF42-6 data as that records average and maximum service times.
-
m.com
Twitter / Facebook IDs: MartinPacker
Blog:
https://www.ibm.com/developerworks/mydeveloperworks/blogs/MartinPacker
From: Al Sherkow
To: IBM-MAIN@listserv.ua.edu,
Date: 04/21/2013 07:50 PM
Subject: Re: SMF42 subtype 6 interpretation
Sent by:IBM Mainframe Discussion
Yes the times are in uses of 128 microseconds.
If you are a member of CMG or are willing to register on their website you can
find my 1998 paper "DOES YOUR INSTALLATION HAVE HALF-SECOND I/O RESPONSE TIME?
(A Closer Examination of Disconnect Time)". I believe that paper first explored
how to us
In
<461643955.1081520.1366308196215.javamail.r...@sz0127a.westchester.pa.mail.comcast.net>,
on 04/18/2013
at 06:03 PM, DASDBILL2 said:
>I strongly suspect, without reading the doc, that "ms" should be
>microseconds instead of milliseconds. I suspect this because of
>the multiplier 128. I ad
ail: martin_pac...@uk.ibm.com
Twitter / Facebook IDs: MartinPacker
Blog:
https://www.ibm.com/developerworks/mydeveloperworks/blogs/MartinPacker
From: "Mackenzie, Bruce"
To: IBM-MAIN@listserv.ua.edu,
Date: 04/19/2013 01:27 PM
Subject: Re: SMF42 subtype 6 interpret
y Duc
Sent: Thursday, April 18, 2013 9:54 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: SMF42 subtype 6 interpretation
Hi all ,
As a DB2 specialist , i have reports showing a wait for io time in some
programs. I did a SMF42 subtype 6 reports and , effectively, my datasets are in
the top of the list ,
l Message -
From: "Ducky Duc"
To: IBM-MAIN@LISTSERV.UA.EDU
Sent: Thursday, April 18, 2013 12:24:21 PM
Subject: Re: SMF42 subtype 6 interpretation
I guess that the value of 8 for S42DSIOR (Average Response Time) , i.e 128ms X
8 = &
I guess that the value of 8 for S42DSIOR (Average Response Time) , i.e 128ms X
8 = > 1 second , is not good at all
--
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to lists...@listserv.ua.edu wit
From: "Ducky Duc"
To: IBM-MAIN@LISTSERV.UA.EDU
Sent: Thursday, April 18, 2013 8:53:39 AM
Subject: SMF42 subtype 6 interpretation
Hi all ,
As a DB2 specialist , i have reports showing a wait for io time in some
programs. I did a SMF42 subtype 6 reports and , effectively, my datasets a
Ducky Duc wrote:
>However , don't know if my calculation of the average response time of 9 ;
>which corresponds to 9 X 128ms = 1152ms , from the manual is correct. And
>sorry for the dummy question , what is a "correct" average response time , a
>few ms i suppose ...
Could you be kind to post
Hi all ,
As a DB2 specialist , i have reports showing a wait for io time in some
programs. I did a SMF42 subtype 6 reports and , effectively, my datasets are in
the top of the list , cut and pasted below from an Excel sheet.
However , don't know if my calculation of the average response tim
11 matches
Mail list logo
