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authorjunyoung <junyoung@NetBSD.org>2002-10-18 14:31:10 +0000
committerjunyoung <junyoung@NetBSD.org>2002-10-18 14:31:10 +0000
commitcc537c2f3a9d036365f83d53429dffebdffddd81 (patch)
treed47e690886e7b4afb66b95ea0e863336c72f6910 /sys/dev/ata
parente12c9d54c03ef1f25fa691dbedcc2ad9a856ca94 (diff)
Add option NEW_BUFQ_STRATEGY, a new buffer queue strategy for better
system responsiness under high disk I/O load. OK'ed by Juergen Hannken-Illjes.
Diffstat (limited to 'sys/dev/ata')
-rw-r--r--sys/dev/ata/wd.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/sys/dev/ata/wd.c b/sys/dev/ata/wd.c
index d186788f9b7..62269d1412e 100644
--- a/sys/dev/ata/wd.c
+++ b/sys/dev/ata/wd.c
@@ -1,4 +1,4 @@
-/* $NetBSD: wd.c,v 1.229 2002/10/02 16:33:37 thorpej Exp $ */
+/* $NetBSD: wd.c,v 1.230 2002/10/18 14:31:13 junyoung Exp $ */
/*
* Copyright (c) 1998, 2001 Manuel Bouyer. All rights reserved.
@@ -66,12 +66,13 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: wd.c,v 1.229 2002/10/02 16:33:37 thorpej Exp $");
+__KERNEL_RCSID(0, "$NetBSD: wd.c,v 1.230 2002/10/18 14:31:13 junyoung Exp $");
#ifndef WDCDEBUG
#define WDCDEBUG
#endif /* WDCDEBUG */
+#include "opt_bufq.h"
#include "rnd.h"
#include <sys/param.h>
@@ -279,7 +280,11 @@ wdattach(parent, self, aux)
WDCDEBUG_PRINT(("wdattach\n"), DEBUG_FUNCS | DEBUG_PROBE);
callout_init(&wd->sc_restart_ch);
+#ifdef NEW_BUFQ_STRATEGY
+ bufq_alloc(&wd->sc_q, BUFQ_READ_PRIO|BUFQ_SORT_RAWBLOCK);
+#else
bufq_alloc(&wd->sc_q, BUFQ_DISKSORT|BUFQ_SORT_RAWBLOCK);
+#endif
wd->atabus = adev->adev_bustype;
wd->openings = adev->adev_openings;