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| Interpreting SMF 116 Class 3 |
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| gouda |
 Posted: Fri Jul 22, 2011 7:11 am Post subject: Interpreting SMF 116 Class 3 |
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Apprentice
Joined: 20 May 2001
Posts: 32
Location: Germany, Nuremburg
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Hi group,
i am worried after seeing this output from SupportPac MP1B.
Originally i just wanted to assist a developer to find an error.
MP1B produced these lines:
| Code: |
==============================================
Open name ####.##### Object type:Alias Queue
Base name ####.#####.LOCAL Base type :Queue
Queue indexed by GROUP ID
First opened 21-07-2011 06:29:27.54
Last closed 21-07-2011 11:30:57.50
Page set ID 5, Buffer pool 2
Current opens 0, Total requests 60226
Generated messages : 0
Persistent messages: GETs 20868, PUTs 0, PUT1s 0
Put to waiting getter: PUT 0, PUT1 0
GETs: Valid 20868, Max size 267918, Min size 2684, Total bytes 102105825
GETs: Dest-S 0, Dest-G 60224, Brow-S 0, Brow-G 0, Sucessful destructive 20868
Time on queue : Max 8779.467815, Min 0.098210, Avg 4294850603.023688
-MQ call- N ET CT Susp LOGW PSET Epages skip expire
Open : 1 124 43 83
Get : 60224 647 65 574 543 0 263 0 0
-Logging: Total-count Total-elapsed Force-count Force-elapsed
MQGET 20868 32.702875 20868 32.702875
Maximum depth encountered 18412
============================================== |
What irritates me is the line with GETs: Dest-S
I have two kinds of destructive Gets: 20868 and 60224 .
What causes that difference ? 20868 seems to be the 'real' number of processed messages, what is 60224 ?
Similar statistics happen in an OUW of the MCA playing with an XMIT queue.
Is anyone familiar with this ?
Or even Colin out there, the author of MP1B ? |
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| elkinsc |
| Posted: Fri Jul 22, 2011 8:46 am Post subject: Valid vs invalid gets |
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Centurion
Joined: 29 Dec 2004
Posts: 138
Location: Indy
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Greetings!
The 'Valid' count is the number of GETs to the queue that were successful (did not expire, did not get a 2033, etc.) - the count difference is between the requests issued and requests fulfilled.
To quote from MP1B:
The row with GETs : Valid gives the number of gets which returned a message(valid gets) the maximum and
minimum message sizes in bytes, and the total number of bytes processed as an 8 character hex number. It is
displayed in hex because this number could be very large and normal 31 bit arithmetic may not work.
The row with GETs : Dest-S gives
• the number of destructive gets where a message id or correlation id was specified (Dest-S)
• the number of destructive gets where a message id or correlation id was not specified (Dest-G)
• the number of browse requests where a message id or correlation id was specified (Brow-S)
• the number of browse requests where a message id or correlation id was not specified (Brow-G) |
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| gouda |
| Posted: Mon Jul 25, 2011 12:00 am Post subject: |
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Apprentice
Joined: 20 May 2001
Posts: 32
Location: Germany, Nuremburg
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So the application seems to 'poll' the queue.
Thank you for your support ! |
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| bruce2359 |
| Posted: Mon Jul 25, 2011 4:37 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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| gouda wrote: |
| So the application seems to 'poll' the queue. |
How did you arrive at this statement?
_________________
I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| gouda |
| Posted: Mon Jul 25, 2011 10:17 pm Post subject: |
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Apprentice
Joined: 20 May 2001
Posts: 32
Location: Germany, Nuremburg
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Hi Bruce,
you mean how i came to this conclusion ?
I don't know much about the application since the the developer is on vacation. This is just an interpretation for the mismatch of the counters. |
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