Author: mav
Date: Wed Sep 22 05:17:18 2010
New Revision: 212991
URL: http://svn.freebsd.org/changeset/base/212991
Log:
Decrease poll interval from 1000 to 100us. This significantly reduces
kernel dump time, especially with minidump.
Modified:
head/sys/cam/cam_xpt.c
Modified: head/sys/cam/cam_xpt.c
==============================================================================
--- head/sys/cam/cam_xpt.c Wed Sep 22 04:48:39 2010 (r212990)
+++ head/sys/cam/cam_xpt.c Wed Sep 22 05:17:18 2010 (r212991)
@@ -2914,7 +2914,7 @@ xpt_polled_action(union ccb *start_ccb)
struct cam_ed *dev;
- timeout = start_ccb->ccb_h.timeout;
+ timeout = start_ccb->ccb_h.timeout * 10;
sim = start_ccb->ccb_h.path->bus->sim;
devq = sim->devq;
dev = start_ccb->ccb_h.path->device;
@@ -2930,7 +2930,7 @@ xpt_polled_action(union ccb *start_ccb)
while(((devq != NULL && devq->send_openings <= 0) ||
dev->ccbq.dev_openings < 0) && (--timeout > 0)) {
- DELAY(1000);
+ DELAY(100);
(*(sim->sim_poll))(sim);
camisr_runqueue(&sim->sim_doneq);
}
@@ -2946,7 +2946,7 @@ xpt_polled_action(union ccb *start_ccb)
if ((start_ccb->ccb_h.status & CAM_STATUS_MASK)
!= CAM_REQ_INPROG)
break;
- DELAY(1000);
+ DELAY(100);
}
if (timeout == 0) {
/*
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