[src/trunk]: src/sys/uvm Increase UVM read ahead window limit a bit to match ...

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

details:   https://anonhg.NetBSD.org/src/rev/50bac98bcca1
branches:  trunk
changeset: 321658:50bac98bcca1
user:      mlelstv <mlelstv%NetBSD.org@localhost>
date:      Fri Mar 30 07:22:59 2018 +0000

description:
Increase UVM read ahead window limit a bit to match concurrency of reading
from the raw device.

diffstat:

 sys/uvm/uvm_readahead.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (27 lines):

diff -r 0384257bfe8c -r 50bac98bcca1 sys/uvm/uvm_readahead.c
--- a/sys/uvm/uvm_readahead.c   Fri Mar 30 07:11:40 2018 +0000
+++ b/sys/uvm/uvm_readahead.c   Fri Mar 30 07:22:59 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: uvm_readahead.c,v 1.8 2011/06/12 03:36:04 rmind Exp $  */
+/*     $NetBSD: uvm_readahead.c,v 1.9 2018/03/30 07:22:59 mlelstv Exp $        */
 
 /*-
  * Copyright (c)2003, 2005, 2009 YAMAMOTO Takashi,
@@ -40,7 +40,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: uvm_readahead.c,v 1.8 2011/06/12 03:36:04 rmind Exp $");
+__KERNEL_RCSID(0, "$NetBSD: uvm_readahead.c,v 1.9 2018/03/30 07:22:59 mlelstv Exp $");
 
 #include <sys/param.h>
 #include <sys/pool.h>
@@ -73,7 +73,7 @@
 #endif
 
 #define        RA_WINSIZE_INIT MAXPHYS                 /* initial window size */
-#define        RA_WINSIZE_MAX  (MAXPHYS * 8)           /* max window size */
+#define        RA_WINSIZE_MAX  (MAXPHYS * 16)          /* max window size */
 #define        RA_WINSIZE_SEQENTIAL    RA_WINSIZE_MAX  /* fixed window size used for
                                                   SEQUENTIAL hint */
 #define        RA_MINSIZE      (MAXPHYS * 2)           /* min size to start i/o */