ADSM-L

Re: Please Explain

2001-12-20 09:24:00
Subject: Re: Please Explain
From: Robin Sharpe <Robin_Sharpe AT BERLEX DOT COM>
Date: Thu, 20 Dec 2001 09:20:26 -0500
I don't see how aggregate  rate could exceed network rate.   Aggregate is
Bytes Transferred divided by Elapsed Time, and Network is Bytes Transferred
divided by Data Transfer Time....  what were those values in the session
where Aggregate was greater than Network?  How could Data Transfer Time be
greater than Elapsed Time?  Must be a bug!

Robin Sharpe
Berlex Labs



                    Miles Purdy
                    <PURDYM@FIPD.
                    GC.CA>        To:    ADSM-L AT VM.MARIST DOT EDU
                                  cc:    (bcc: Robin Sharpe/WA/USR/SHG)
                    12/20/01      Subject:
                    08:44 AM             Re: Please Explain
                    Please
                    respond to
                    "ADSM: Dist
                    Stor Manager"







The network transfer rate is the time is takes to send the file to be
backed up to the TSM server.

The aggregate is the total KB backed up / the total time.

The difference is the processing time. The time to contact the TSM server
and check if the file needs to be backed up.

Interestingly enough, my aggregate usually exceeds the network, I was
asking yesterday if any one else sees this.
Miles


----------------------------------------------------------------------------------------------
Miles Purdy
Miles Purdy
System Manager
Farm Income Programs Directorate
Winnipeg, MB, CA
purdym AT fipd.gc DOT ca
ph: (204) 984-1602 fax: (204) 983-7557

"If you hold a UNIX shell up to your ear, can you hear the C?"
-------------------------------------------------------------------------------------------------
>>> rouzen AT UNIV.HAIFA.AC DOT IL 20-Dec-01 4:45:16 AM >>>
>>> rouzen AT UNIV.HAIFA.AC DOT IL 20-Dec-01 4:45:16 AM >>>
Hi

I run  a full backup of a Netware 5 with Tivoli client 4.2.0 here the
statistics:

 12/18/2001 13:58:12 Total number of objects inspected:   33,310
12/18/2001 13:58:12 Total number of objects backed up:   33,104
12/18/2001 13:58:12 Total number of objects updated:          0
12/18/2001 13:58:12 Total number of objects rebound:          0
12/18/2001 13:58:12 Total number of objects deleted:          0
12/18/2001 13:58:12 Total number of objects expired:          0
12/18/2001 13:58:12 Total number of objects failed:           3
12/18/2001 13:58:12 Total number of bytes transferred:     1.33 GB
12/18/2001 13:58:12 Data transfer time:                  138.38 sec
12/18/2001 13:58:12 Network data transfer rate:        10,099.94 KB/sec
12/18/2001 13:58:12 Aggregate data transfer rate:        802.25 KB/sec
12/18/2001 13:58:12 Objects compressed by:                    0%
12/18/2001 13:58:12 Elapsed processing time:           00:29:02

Can anybody explain why my Network data transfer rate is so high but my
Aggregate data transfer rate is low !!!!!!!!!!!!

T.I.A Regards

Robert Ouzen
E-mail: rouzen AT univ.haifa.ac DOT il
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