[src/trunk]: src/sys/arch/alpha/include Bump UBC_WINSHIFT to 16 (64KB), and U...

[thorpej <thorpej%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/383e758aceaf
branches:  trunk
changeset: 975501:383e758aceaf
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Sat Aug 29 20:08:08 2020 +0000

description:
Bump UBC_WINSHIFT to 16 (64KB), and UBC_NWINS to 4096 (256MB total).
Alpha has plenty of KVA to use for this.

diffstat:

 sys/arch/alpha/include/vmparam.h |  13 ++++++++++++-
 1 files changed, 12 insertions(+), 1 deletions(-)

diffs (27 lines):

diff -r dab4b6e94752 -r 383e758aceaf sys/arch/alpha/include/vmparam.h
--- a/sys/arch/alpha/include/vmparam.h  Sat Aug 29 20:06:59 2020 +0000
+++ b/sys/arch/alpha/include/vmparam.h  Sat Aug 29 20:08:08 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: vmparam.h,v 1.38 2012/12/10 16:12:19 chs Exp $ */
+/* $NetBSD: vmparam.h,v 1.39 2020/08/29 20:08:08 thorpej Exp $ */
 
 /*
  * Copyright (c) 1988 University of Utah.
@@ -58,6 +58,17 @@
 #define        PAGE_MASK       (PAGE_SIZE - 1)
 
 /*
+ * Defaults for Unified Buffer Cache parameters.
+ */
+
+#ifndef UBC_WINSHIFT
+#define        UBC_WINSHIFT    16      /* 64KB */
+#endif
+#ifndef        UBC_NWINS
+#define        UBC_NWINS       4096    /* for a total of 256MB */
+#endif
+
+/*
  * USRSTACK is the top (end) of the user stack.
  *
  * Digital UNIX (formerly DEC OSF/1) places the stack below the