### Performance Tuning: Latency

Use this procedure to tune your AccelePort device driver for reduced latency. For general information about latency, see About Latency.

#### Enabling Latency

To enable reduced-latency mode, edit the file /kernel/drv/dgdxb.conf and add one or more lines of the form:

`instanceN_use_interrupts=1`

where `N` is the instance number of the adapter (printed at driver-load/boot time).

#### Configuring the Latency Interrupt Period

To enable reduced-latency mode, edit the file /kernel/drv/dgdxb.conf and add one or more lines of the form:

`instanceN_interrupt_period=X;`

where `N` is the instance number of the adapter (printed at driver-load/boot time) and X is the desired interrupt period in milliseconds. The default interrupt period is 10 milliseconds (1/100 second).