Potential bottlenecks in the data flow for IBM Spectrum Protect operations

Use of data compression, data deduplication, and encryption, including Secure Sockets Layer (SSL) protocol, can affect processor performance on the client system. If processor usage is too high on the system, consider adding more processors, or turning off the options that enable compression, data deduplication, or encryption. Then, see whether performance improves.

For information about tuning for client memory limits, see Reduce client memory use.

Software such as firewalls and antivirus programs might affect the efficiency of client operations. For example, during a restore operation, an antivirus program might scan the contents of each restored object, checking for virus signatures. If you suspect that a firewall or antivirus program is slowing client operations, consider temporarily turning the firewall or antivirus program off to see whether performance improves. For tips to minimize the impact of firewall or antivirus programs on other applications, see the documentation for those programs.

A fast network interface card (NIC) improves network throughput. If you cannot use the latest NIC in your configuration, consider adjusting the client TCPWINDOWSIZE option to improve network throughput, particularly on client systems that are geographically distant from the server. Adjust the TCPWINDOWSIZE options in small increments; a window size that is larger than the buffer space on the network interface adapter might actually degrade throughput. For more network considerations, see Tuning network performance.

Use of data compression, data deduplication, and encryption, including Secure Sockets Layer (SSL) protocol, can affect processor performance on the client system. If processor usage is too high on the system, consider adding more processors, or turning off the options that enable compression, data deduplication, or encryption. Then, see whether performance improves.

For information about tuning for client memory limits, see Reduce client memory use.

Software such as firewalls and antivirus programs might affect the efficiency of client operations. For example, during a restore operation, an antivirus program might scan the contents of each restored object, checking for virus signatures. If you suspect that a firewall or antivirus program is slowing client operations, consider temporarily turning the firewall or antivirus program off to see whether performance improves. For tips to minimize the impact of firewall or antivirus programs on other applications, see the documentation for those programs.

A fast network interface card (NIC) improves network throughput. If you cannot use the latest NIC in your configuration, consider adjusting the client TCPWINDOWSIZE option to improve network throughput, particularly on client systems that are geographically distant from the server. Adjust the TCPWINDOWSIZE options in small increments; a window size that is larger than the buffer space on the network interface adapter might actually degrade throughput. For more network considerations, see Tuning network performance.