ADSM-L

Re: Performance problem

2003-02-07 07:54:35
Subject: Re: Performance problem
From: Gianluca Mariani1 <gianluca_mariani AT IT.IBM DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Fri, 7 Feb 2003 12:02:11 +0100
What is EndTxn Verb? It takes 50% of the clients time.

      - it indicates the end-transaction verb time on the server.that is
the time it takes to close the transaction.the fact that in the trace Data
Verb is high as well points to a problem on the server.

Cache Hit Pct.: 98.25
we'd like to see this figure >99%.

the fact that you are running the server on solaris and the DB is only made
up of 2 physical volumes would seem the place to start with.
you should, if you haven't done so already, move the db volumes to Raw
Logical Volumes and create more volumes as this will improve performance.

Cordiali saluti
Gianluca Mariani
Tivoli TSM Global Response Team, Roma
Via Sciangai 53, Roma
 phones : +39(0)659664598
                   +393351270554 (mobile)
gianluca_mariani AT it.ibm DOT com
----------------------------------------------------------------------------------------------------

The Hitch Hiker's Guide to the Galaxy says  of the Sirius Cybernetics
Corporation product that "it is very easy to be blinded to the essential
uselessness of  them by the sense of achievement you get from getting them
to work at all. In other words ? and this is the rock solid principle  on
which the  whole  of the Corporation's Galaxy-wide success is founded
-their fundamental design flaws are  completely  hidden  by  their
superficial design flaws"...


                                                                           
             Miguel Demaerel                                               
             <Miguel.Demaere                                               
             l AT BRUSSELS DOT SEMA                                            
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Hoi

Can someone help me with this.
TSM Server 4.2.2.12
Sun Solaris 8 (E450)
BA Client 4.2.1.0
Connect thru Fast ethernet.

Sometimes time the backup takes hours to complete.
Yesterday
Tivoli Storage Manager
Version 4, Release 2, Level 1.0
------------------------------------------------------------------
Final Detailed Instrumentation statistics
Elapsed time: 22013.450 sec
Section      Total Time(sec)  Average Time(msec)  Frequency used
------------------------------------------------------------------
Client Setup        0.459          459.3              1
Process Dirs      784.543           60.3          13020
Solve Tree          0.000            0.0              0
Compute            17.605            0.0        2378504
Transaction       119.315            0.0        7271635
BeginTxn Verb       0.014            0.0            963
File I/O         2150.921            0.9        2499558
Compression         0.000            0.0              0
Encryption          0.000            0.0              0
Delta               0.000            0.0              0
Data Verb        6582.896            2.8        2378504
Confirm Verb        3.148           25.2            125
EndTxn Verb     13139.736        13644.6            963
Client Cleanup      1.345         1345.4              1
------------------------------------------------------------------

Today
Tivoli Storage Manager
Version 4, Release 2, Level 1.0
------------------------------------------------------------------
Final Detailed Instrumentation statistics
Elapsed time: 28370.683 sec
Section      Total Time(sec)  Average Time(msec)  Frequency used
------------------------------------------------------------------
Client Setup        0.310          310.0              1
Process Dirs      805.894           61.9          13021
Solve Tree          0.000            0.0              0
Compute             8.768            0.0        1263556
Transaction       103.700            0.0        3926255
BeginTxn Verb       0.011            0.0            708
File I/O         2565.036            1.9        1384594
Compression         0.000            0.0              0
Encryption          0.000            0.0              0
Delta               0.000            0.0              0
Data Verb        5483.521            4.3        1263556
Confirm Verb        2.878           24.6            117
EndTxn Verb     20212.193        28548.3            708
Client Cleanup      1.080         1079.8              1
------------------------------------------------------------------


What is EndTxn Verb? It takes 50% of the clients time.

tsm: ADSM>q db f=d

          Available Space (MB): 18,000
        Assigned Capacity (MB): 18,000
        Maximum Extension (MB): 0
        Maximum Reduction (MB): 9,944
             Page Size (bytes): 4,096
            Total Usable Pages: 4,608,000
                    Used Pages: 2,058,256
                      Pct Util: 44.7
                 Max. Pct Util: 44.7
              Physical Volumes: 2
             Buffer Pool Pages: 32,768
         Total Buffer Requests: 130,231,713
                Cache Hit Pct.: 98.25
               Cache Wait Pct.: 0.00
           Backup in Progress?: No
    Type of Backup In Progress:
  Incrementals Since Last Full: 0
Changed Since Last Backup (MB): 0.09
            Percentage Changed: 0.00
Last Complete Backup Date/Time: 02/07/2003 09:45:03

There is no waiting and the cache hit is ok.
tsm: ADSM>q log f=d

       Available Space (MB): 2,072
     Assigned Capacity (MB): 2,072
     Maximum Extension (MB): 0
     Maximum Reduction (MB): 2,068
          Page Size (bytes): 4,096
         Total Usable Pages: 529,920
                 Used Pages: 54
                   Pct Util: 0.0
              Max. Pct Util: 10.2
           Physical Volumes: 2
             Log Pool Pages: 512
         Log Pool Pct. Util: 0.62
         Log Pool Pct. Wait: 0.00
Cumulative Consumption (MB): 626,585.08
Consumption Reset Date/Time: 03/06/2002 10:40:02
Even log wait is 0.

Can someone help me with this?
Thanks

                                      /////
                                     (o o)
==============oOO==(_)==OOo==============
                            Miguel Demaerel
                            System Engineer
                             Schlumberger
          Raketstraat 98, B-1130 Brussels, Belgium
                        Tel +32 (0)2 724 93 17
                       Fax +32 (0)2 724 92 92
                 Email Miguel.Demaerel AT SLB DOT COM
=========================================


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