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The HBAnyware Utility User Manual Page 58
dqfull-throttle-up-
time
Controller
Specific
1 0 30 Yes Time interval (seconds) to
increment LUN queue depth.
Amount to increment
LUN queue depth each
time. This driver property
causes the lpfc driver to
decrement a LUN’s queue
depth, if a queue full condition
is received from the target.
The queue depth will be
decremented down to a
minimum of 1. The variables
dqfull-throttle-up-inc and
dqfull-throttle-up-time are
used to restore the queue
depth back to the original.
The dqfull-throttle-up-time
driver property defines a time,
in seconds, that is used to tell
when to increase the
current queue depth. If the
current queue depth isn't
equal to the lun-queue-depth,
and the driver
stop_send_io flag is equal to 0
for that device, increment the
current queue depth by dqfull-
throttle-up-inc (don't exceed
the lun-queue-depth). So, if
both driver properties are set
to 1, then driver increments
the current queue depth once
per second until it hits the lun-
queue-depth. The only other
way to restore the queue
depth (besides rebooting),
back to the original LUN
throttle, is by running the
command
/usr/sbin/lpfc/resetqdepth X.
This will restore the LUN
throttle of all LUNs for adapter
X back to the original value.
Table 3: LPFC.conf Parameters (Continued)
Property Name Scope Default Min Max Dynamic Comments