Please note that diffs are not public domain; they are subject to the
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===================================================================
RCS file: /ftp/cvs/cvsroot/src/sys/kern/bufq_priocscan.c,v
rcsdiff: /ftp/cvs/cvsroot/src/sys/kern/bufq_priocscan.c,v: warning: Unknown phrases like `commitid ...;' are present.
retrieving revision 1.11
retrieving revision 1.12
diff -u -p -r1.11 -r1.12
--- src/sys/kern/bufq_priocscan.c	2008/04/30 12:09:02	1.11
+++ src/sys/kern/bufq_priocscan.c	2008/05/03 05:18:36	1.12
@@ -1,4 +1,4 @@
-/*	$NetBSD: bufq_priocscan.c,v 1.11 2008/04/30 12:09:02 reinoud Exp $	*/
+/*	$NetBSD: bufq_priocscan.c,v 1.12 2008/05/03 05:18:36 yamt Exp $	*/
 
 /*-
  * Copyright (c)2004 YAMAMOTO Takashi,
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: bufq_priocscan.c,v 1.11 2008/04/30 12:09:02 reinoud Exp $");
+__KERNEL_RCSID(0, "$NetBSD: bufq_priocscan.c,v 1.12 2008/05/03 05:18:36 yamt Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -159,6 +159,9 @@ struct bufq_priocscan {
  * how many requests to serve when having pending requests on other queues.
  *
  * XXX tune
+ * be careful: while making these values larger likely
+ * increases the total throughput, it can also increase latencies
+ * for some workloads.
  */
 const int priocscan_burst[] = {
 	64, 16, 4