IBM E16RMLL-I Implementation Guide - Page 549
we need to transfer it through the network to make it available for the client
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So out of the total time of 406 seconds, it takes 308 seconds to process the 35332 directories and realize that only two objects have changed. In addition, the server is queried for the objects available, resulting in a search and transfer of 82 MB worth of inventory information, as shown with producer session 134 in Example 15-23. Not only do we have to collect the information from the server, we need to transfer it through the network to make it available for the client session to check for changed objects. Example 15-23 TSM server query session information tsm: LOCHNESS_SERVER1>q se Sess Comm. Sess Wait Bytes Bytes Sess Platform Client Name Number Method State Time Sent Recvd Type 121 Tcp/Ip Run 0 S 8.4 K 456 Admin WinNT ADMIN 134 Tcp/Ip IdleW 1 S 82.0 M 1.8 K Node AIX BANDA Now we run the same operation, but with JBB enabled. The statistics are shown in Example 15-24. Example 15-24 Journal-based backup statistics Session established with server LOCHNESS_SERVER1: Windows Server Version 5, Release 3, Level 2.2 Server date/time: 02/23/06 17:12:31 Last access: 02/23/06 17:11:38 Incremental backup of volume '/home' Querying Journal for '/home' Processing 1 Journal entries for '/home' Successful incremental backup of '/home' Total number of objects inspected: 1 Total number of objects backed up: 1 Total number of objects updated: 0 Total number of objects rebound: 0 Total number of objects deleted: 0 Total number of objects expired: 0 Total number of objects failed: 0 Total number of bytes transferred: 88.03 KB Data transfer time: 0.00 sec Network data transfer rate: 17,737.50 KB/sec Aggregate data transfer rate: 43.80 KB/sec Objects compressed by: 0% Elapsed processing time: 00:00:02 Chapter 15. Performance considerations 519
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