diff options
| author | mjacob <mjacob@cvs.openbsd.org> | 2000-04-07 21:05:06 +0000 |
|---|---|---|
| committer | mjacob <mjacob@cvs.openbsd.org> | 2000-04-07 21:05:06 +0000 |
| commit | 2be85821416175baab2116541e7acc745d3e02aa (patch) | |
| tree | 8f41de2ce5ef4833a23246fc2f1e21babcc581ad /sys/arch | |
| parent | f11f4a7dbafbd6400a9fa3cdf96b7c9ea0864e22 (diff) | |
Protect MAXPHYS against redefinition- this allows you to make a config
option for increasing it to something reasonable for large I/O subsystems
(you get 22MB/s on some of the DataDirect RAID arrays at 64K, about 37MB/s
when you get go to 256KB transfers).
Diffstat (limited to 'sys/arch')
| -rw-r--r-- | sys/arch/i386/include/param.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sys/arch/i386/include/param.h b/sys/arch/i386/include/param.h index ed1128db081..6d32250764f 100644 --- a/sys/arch/i386/include/param.h +++ b/sys/arch/i386/include/param.h @@ -1,4 +1,4 @@ -/* $OpenBSD: param.h,v 1.10 2000/02/22 19:27:48 deraadt Exp $ */ +/* $OpenBSD: param.h,v 1.11 2000/04/07 21:05:05 mjacob Exp $ */ /* $NetBSD: param.h,v 1.29 1996/03/04 05:04:26 cgd Exp $ */ /*- @@ -82,7 +82,9 @@ #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ #define DEV_BSIZE (1 << DEV_BSHIFT) #define BLKDEV_IOSIZE 2048 +#ifndef MAXPHYS #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ +#endif #define CLSIZELOG2 0 #define CLSIZE (1 << CLSIZELOG2) |