From: Adrian Schröter <adrian@suse.de>
Date: Wed, 10 Nov 2010 07:54:11 +0000 (+0100)
Subject: XEN: switch from using phy: to tap:aio: to improve block IO performance
X-Git-Tag: upstream/20120927~258
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e114578358725bccac5c77e5b0007ed8e2aa105a;p=platform%2Fupstream%2Fbuild.git

XEN: switch from using phy: to tap:aio: to improve block IO performance
Thanks to Berthold for the hint (test case time was reduced by > 30%)
---

diff --git a/build b/build
index f647779..42ab92b 100755
--- a/build
+++ b/build
@@ -1409,12 +1409,12 @@ for SPECFILE in "${SPECFILES[@]}" ; do
 
 	if [ "$VM_TYPE" = 'xen' ]; then
 		XMROOT="file:$(readlink -f $VM_IMAGE)"
-		XMROOT=${XMROOT/#file:\/dev/phy:/dev}
+		XMROOT=${XMROOT/#file:\/dev/tap:aio:/dev}
 		XMROOT="disk=$XMROOT,hda1,w"
 		XMSWAP=
 		if test -n "$VM_SWAP" ; then
 		    XMSWAP="file:$(readlink -f $VM_SWAP)"
-		    XMSWAP=${XMSWAP/#file:\/dev/phy:/dev}
+		    XMSWAP=${XMSWAP/#file:\/dev/tap:aio:/dev}
 		    XMSWAP="disk=$XMSWAP,hda2,w"
 		fi
 		XENID="${VM_IMAGE%/root}"