Chapter 15. Performance considerations
491
performance tracing” on page 492, we explain the sections of the client
instrumentation traces:
Client Setup
Initial processing including signon, authorization, and
queries for policy set and file system information.
Process Dirs
Processing directory and file information before backing
up or restoring any files. For incremental backup, it
includes querying the server for backup status
information. For classic restore, it includes retrieving the
file list. For no-query-restore, this is not used.
Solve Tree
For selective backup, determining whether there are any
new directories in the path that need to be backed up.
This involves querying the server for backup status
information about directories. This can be large if there
are a large number of directories.
Compute
Computing throughput and transfer sizes.
Transaction
A general category to capture all time not accounted for in
the other sections. Includes file open/close time, which
can be large, especially during restore of many small files.
Also includes message display time, which can be large if
running without the quiet option or with detailed traces
enabled. Average time for this section is not meaningful.
BeginTxn Verb
Frequency used indicates the number of transactions that
were used during the session.
File I/O
Requesting data to be read or written on the client file
system.
Compression
Compressing or uncompressing data.
Encryption
Encrypting or decrypting data.
CRC
Computing or comparing CRC values.
Delta
Adaptive subfile backup processing, including
determining the changed file bytes or blocks.
Data Verb
Sending or receiving data to/from the communication
layer. High data verb time prompts an investigation of
server performance and the communication layer (which
includes elements of both the client and server).
Confirm Verb
During backup, sending a confirm verb and waiting for a
response to confirm that the data is being received by the
server.
EndTxn Verb
During backup, waiting for the server to commit the
transaction. This includes updating the database pages in
Summary of Contents for E16RMLL-I - Tivoli Storage Manager
Page 2: ......
Page 23: ...Figures xxi 22 6 AIX lab environment 708...
Page 24: ...xxii IBM Tivoli Storage Manager Implementation Guide...
Page 32: ...2 IBM Tivoli Storage Manager Implementation Guide...
Page 44: ...14 IBM Tivoli Storage Manager Implementation Guide...
Page 94: ...64 IBM Tivoli Storage Manager Implementation Guide...
Page 96: ...66 IBM Tivoli Storage Manager Implementation Guide...
Page 126: ...96 IBM Tivoli Storage Manager Implementation Guide...
Page 298: ...268 IBM Tivoli Storage Manager Implementation Guide...
Page 354: ...324 IBM Tivoli Storage Manager Implementation Guide...
Page 356: ...326 IBM Tivoli Storage Manager Implementation Guide...
Page 423: ...Chapter 12 Scheduling 393 Week of Month Expire Never tsm quit...
Page 424: ...394 IBM Tivoli Storage Manager Implementation Guide...
Page 510: ...480 IBM Tivoli Storage Manager Implementation Guide...
Page 552: ...522 IBM Tivoli Storage Manager Implementation Guide...
Page 554: ...524 IBM Tivoli Storage Manager Implementation Guide...
Page 594: ...564 IBM Tivoli Storage Manager Implementation Guide...
Page 612: ...582 IBM Tivoli Storage Manager Implementation Guide...
Page 618: ...588 IBM Tivoli Storage Manager Implementation Guide...
Page 720: ...690 IBM Tivoli Storage Manager Implementation Guide...
Page 752: ...722 IBM Tivoli Storage Manager Implementation Guide...
Page 758: ...728 IBM Tivoli Storage Manager Implementation Guide...
Page 780: ...750 IBM Tivoli Storage Manager Implementation Guide...
Page 802: ...772 IBM Tivoli Storage Manager Implementation Guide...
Page 823: ...Index 793 Z z OS tape management 58 zOS 200...
Page 824: ...794 IBM Tivoli Storage Manager Implementation Guide...
Page 825: ...IBM Tivoli Storage Manager Implementation Guide...
Page 826: ......
Page 827: ......