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From: Alexander Motin <mav@FreeBSD.org>
To: Perforce Change Reviews <perforce@freebsd.org>
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Subject: PERFORCE change 167966 for review
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http://perforce.freebsd.org/chv.cgi?CH=167966

Change 167966 by mav@mav_mavbook on 2009/08/30 08:43:32

	Remove msleep() timeout from g_io_schedule_up/down(). It works fine
	without it, saving few percents of CPU on high request rates
	without need to rearm callout twice per request,

Affected files ...

.. //depot/projects/scottl-camlock/src/sys/geom/geom_io.c#17 edit

Differences ...

==== //depot/projects/scottl-camlock/src/sys/geom/geom_io.c#17 (text+ko) ====

@@ -567,7 +567,7 @@
 		if (bp == NULL) {
 			CTR0(KTR_GEOM, "g_down going to sleep");
 			msleep(&g_wait_down, &g_bio_run_down.bio_queue_lock,
-			    PRIBIO | PDROP, "-", hz/10);
+			    PRIBIO | PDROP, "-", 0);
 			continue;
 		}
 		CTR0(KTR_GEOM, "g_down has work to do");
@@ -672,7 +672,7 @@
 		}
 		CTR0(KTR_GEOM, "g_up going to sleep");
 		msleep(&g_wait_up, &g_bio_run_up.bio_queue_lock,
-		    PRIBIO | PDROP, "-", hz/10);
+		    PRIBIO | PDROP, "-", 0);
 	}
 }