Intel PCI 用户手册

GigMAC-PMC and PCI
GigPMC Switch

Board and Driver Users Manual

DSS NETWORKS, INC.

Version: 2.6

Page: 31

TUNING THE INSTALLATION

Interrupt holdoff (programmed latency)

To increase (or decrease) the value of the programmed interrupt latency, insert the
module and set the "IntrHoldOff" parameter as follows:

insmod ./dpm.o IntrHoldOff=1 # value can be 0, 1, 2 or 3

Note: A value greater than 3 is not recommended.

Other driver parameters that can be set during driver load or in modules.conf:

MediaSpeed=10,100,1000 # Media Speed (default 1000)

SetAutoNeg=0,1

# Setting for auto negotiation (default 1=auto)

DuplexMode=0,1

# Setting for duplex (default 1=FULL)

IntrHoldOff=0,1,2

# interrupt holdoff value in 100 microsecond

units

ChipSelector=0,1

# default=1 (Intel), 0=National

NumBufDescs=<cnt>

# default=256, 128, 256, 512, 1024

MaxBufferSize=<size>

# default=2048, 2048, 4096, 8192

FrameGenSize=<size>

# frame generator test size (64-9000 bytes)

See “Command Line Parameters” table below for additional information on driver
module insertion parameters.