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Open Boot BIOS 4-13
Ver. 2.0 Copyright © 2002 by LSI Logic Corporation. All rights reserved.
timeout of 1280 (0x500) microseconds. What this means is that the host
is interrupted only once for 9 I/Os processed by the chip, unless 1280
microseconds has passed since the host was last interrupted.
Although LSI Logic has determined that these settings are optimal for a
wide variety of situations, your own I/O load may benefit from a deeper
queue, or a longer timeout. LSI Logic provides a mechanism to modify
these values and write them to the non-volatile EEPROM on the adapter.
Select the port or adapter shown (use the port name your system assigns):
ok select /pci@8,700000/IntraServer,fc@1
Then enter commands as shown in the following example:
ok show-interrupt-coalescing
Interrupt coalescing timeout is 500 (1280 decimal) microseconds
Interrupt coalescing depth is 9 (9 decimal)
ok set-interrupt-coalescing <- command with no arguments prints help
usage is <timeout><depth> set-interrupt-coalescing
ok 100 8 set-interrupt-coalescing
Interrupt coalescing timeout selected is 100 (256 decimal) microseconds
Interrupt coalescing depth selected is 8 (8 decimal)
Interrupt coalescing has been set
Change will take effect after system reset
Note: The system must be power cycled before the changes take
effect. It is not sufficient to execute the reset-all command.
4.8.6 Set Fibre Channel Link Speed
There are two modes of operation for Fibre Channel, 1 Gbit/s and
2 Gbit/s. It is important to match the speed of the port with the speed of
the loop or fabric to which the port is attached.
LSI Logic has implemented auto-negotiation on the 2 Gbit/s capable
Fusion-MPT devices. If you are experiencing difficulty with the auto
negotiate algorithm on your fabric or loop, or if you wish to manually set
or show the link speed for the adapter, use the following procedure: