this is my DSM.SYS -------------------------------------------------- SErvername TSM_SERVER COMMmethod TCPip TCPPort 1500 TCPServeraddress 10.100.24.42
compression on passwordaccess generate resourceutilization 4 -------------------------------------------------- when i make a root:>dsmc i / -sub=yes omly one processeurs is use for compression, why ? ----- Original Message ----- From: "Gerald Wichmann" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, June 06, 2002 7:28 PM Subject: Re: Make Compression Client faster ?? You sure the process is cpu bound and that it even matters? One would think the operation is more I/O bound.. Otherwise from redbook "using the ba client" try adjusting the resourceutilization paramater: Resourceutilization Authorized User The resourceutilization option regulates the level of resources the Tivoli Storage Manager server and client can use during processing. When you request a backup or archive, the client can use more than one session to the server. The default is to use a maximum of two sessions; one to query the server and one to send file data. The client can use only one server session if you specify a resourceutilization setting of 1. The client is also restricted to a single session if a user who is not authorized invokes a UNIX client with passwordaccess=generate specified. A client can use more than the default number of sessions when connecting to a server that is Version 3.7 or higher. For example, resourceutilization=10 permits up to eight sessions with the server. Multiple sessions may be used for querying the server and sending file data. Multiple query sessions are used when multiple file specifications are used with a backup or archive command. For example, if you enter: inc filespaceA filespaceB and you specified resourceutilization=5, the client may start a second session to query files on file space B. Whether or not the second session starts depends on how long it takes to query the server about files backed up on file space A. The client may also try to read data from the file system and send it to the server on multiple sessions. The following factors can affect the throughput of multiple sessions: 6 The server's ability to handle multiple client sessions. Is there sufficient memory, multiple storage volumes, and CPU cycles to increase backup throughput? 6 The client's ability to drive multiple sessions (sufficient CPU, memory, etc.). 6 The configuration of the client storage subsystem. File systems that are striped across multiple disks, using either software striping or RAID-5 can better handle an increase in random read requests than a single drive file system. Additionally, a single drive file system may not see performance improvement if it attempts to handle many random concurrent read requests. 6 Sufficient bandwidth in the network to support the increased traffic. Potentially undesirable aspects of running multiple sessions include: 6 The client could produce multiple accounting records. 6 The server may not start enough concurrent sessions. To avoid this, the server maxsessions parameter must be reviewed and possibly changed. 6 A query node command may not summarize client activity. Note: The server can also define this option. Also from another section: Note: On occasion, the aggregate data transfer rate may be higher than the network data transfer rate. This is because the backup-archive client has multithreading capabilities. When multiple threads run during backup, the data transfer time represents the sum time from all threads running. In this case, aggregate data transfer time is mistakenly reported as higher. However, when running a single thread, the aggregate data transfer rate should always be reported as lower than the network data transfer rate. Regards, Gerald Wichmann Senior Systems Development Engineer Zantaz, Inc. 925.598.3099 (w) -----Original Message----- From: Grems [mailto:[EMAIL PROTECTED]] Sent: Thursday, June 06, 2002 9:38 AM To: [EMAIL PROTECTED] Subject: Make Compression Client faster ?? HI, When i use DSMC with client compression on, my AIX use only one Processor for compress Data. I have 6 processor, how can config my DSMC to use the 6 processor for compress my data faster.. is it possible ? Thanks,
