# System CPU load test examples

The tables in this topic provide examples of host CPU loading for the following boards:

- AG board example

- QX 2000 board example

- CG board example

Use this information to estimate how a fax application will affect your host system resources. The percentage of CPU resources used will vary from the statistics presented here depending on the following factors:

- The image size, format, and resolution of the documents used in your fax application.

- The host system configuration.

- Other processing that occurs during NaturalFax processing.

## AG board example

The following statistics were taken from tests performed on a system with an AG 4000/3200 board and a Pentium II 300 MHz PC with 64 MB of RAM. The conversion enabled column indicates that all ports performed on-the-fly conversions. The ECM enabled column indicates that all ports used error correction mode.

Total number of ports | Number of transmit ports | Number of receive ports | Conversion enabled | ECM enabled | Average system CPU usage
--- | --- | --- | --- | --- | ---
60 | 30 | 30 | No | No | 12%
60 | 30 | 30 | Yes | No | 20%
60 | 30 | 30 | No | Yes | 13%
60 | 30 | 30 | Yes | Yes | 21%
90 | 45 | 45 | No | No | 17%
90 | 45 | 45 | Yes | No | 28%
90 | 45 | 45 | No | Yes | 18%
90 | 45 | 45 | Yes | Yes | 30%
120 | 60 | 60 | No | No | 20%
120 | 60 | 60 | Yes | No | 34%
120 | 60 | 60 | No | Yes | 24%
120 | 60 | 60 | Yes | Yes | 38%

## QX 2000 board example

The following table presents the host load test results from QX 2000-based systems with a Pentium 200 MHz processor with 64 MB of RAM. The conversion enabled column indicates that all ports performed on-the-fly conversions. The ECM enabled column indicates that all ports used error correction mode.

Total number of ports | Number of transmit ports | Number of receive ports | Modem | Rate | Conversion enabled | ECM enabled | Average system CPU usage
--- | --- | --- | --- | --- | --- | --- | ---
4 | 2 | 2 | V.29 | 9.6 | No | No | 1.1%
4 | 2 | 2 | V.29 | 9.6 | Yes ** | Yes | 2.5%
4 | 2 | 2 | V.17 | 14.4 | No | No | 2%
4 | 2 | 2 | V.17 | 14.4 | Yes * | Yes | 3.7%
4 | 2 | 2 | V.17 | 14.4 | Yes ** | Yes | 4%
32 | 16 | 16 | V.17 | 14.4 | No | No | 28.5%
32 | 16 | 16 | V.29 | 9.6 | No | Yes | 21.5%
32 | 16 | 16 | V.29 | 9.6 | No | Yes | 21.5%
32 | 16 | 16 | V.29 | 9.6 | Yes * | No | 37.8%
32 | 16 | 16 | V.17 | 14,4 | Yes * | No | 53%
32 | 16 | 16 | V.29 | 9.6 | Yes * | Yes | 36%
32 | 16 | 16 | V.29 | 9.6 | Yes ** | Yes | 56%

*Conversions from A3 to A4 page width format, LOW to SUPER_HIGH resolution, 1D to 2D encoding format.

** Conversions from A3 to A4 page width format, LOW to SUPER_HIGH resolution, 1D to MMR encoding format.

## CG board example

The following table presents statistics obtained from tests performed on a CompactPCI system with a CG 6000C board and a Pentium II 266 MHz board with 64 MB of RAM running Windows. The conversion enabled column indicates that all ports performed on-the-fly conversions. The ECM enabled column indicates that all ports used error correction mode.

Total number of ports | Number of transmit ports | Number of receive ports | Conversion enabled | ECM enabled | Average system CPU usage
--- | --- | --- | --- | --- | ---
60 | 30 | 30 | No | No | 15%
60 | 30 | 30 | Yes | No | 24%
60 | 30 | 30 | No | Yes | 16%
60 | 30 | 30 | Yes | Yes | 28%
90 | 45 | 45 | No | No | 22%
90 | 45 | 45 | Yes | No | 38%
90 | 45 | 45 | No | Yes | 25%
90 | 45 | 45 | Yes | Yes | 43%
120 | 60 | 60 | No | No | 30%
120 | 60 | 60 | Yes | No | 51%
120 | 60 | 60 | No | Yes | 32%
120 | 60 | 60 | Yes | Yes | 58%