[PATCH 14/40] fstests: xfs/227 is really slow

[Dave Chinner <david@fromorbit.com>]

From: Dave Chinner <dchinner@redhat.com>

The slowest test tto run on my test VMs is xfs/227:

...
xfs/227 826
...

It is doing nested iteration on created filesets that are explicitly
defined, so separate the inner loop filesets and run the outer loops
in parallel.

Also reduce the number of times we have to execute setfattr and
xfs_io to once per created file instead of once per xattr/extent
count per file.

The result is test runtime reduction of ~60%.

....
xfs/227 336
....

Signed-off-by: Dave Chinner <dchinner@redhat.com>
---
 tests/xfs/227 | 57 ++++++++++++++++++++++++++++++++-------------------
 1 file changed, 36 insertions(+), 21 deletions(-)

diff --git a/tests/xfs/227 b/tests/xfs/227
index 2ad910cbd..7f8ee2dba 100755
--- a/tests/xfs/227
+++ b/tests/xfs/227
@@ -41,7 +41,7 @@ fragment_freespace()
 	# allocate inode space
 	mkdir -p $_dir
 	for i in `seq 0 1 1000`; do
-		touch $_file.$i
+		echo -n > $_file.$i
 	done
 	for i in `seq 0 63 1000`; do
 		mv $_file.$i $_dir
@@ -68,19 +68,23 @@ fragment_freespace()
 
 create_attrs()
 {
-	for foo in `seq 0 1 $1`; do
-		$SETFATTR_PROG -n user.$foo -v 0xbabe $2
-	done
+	( echo "# file: $2"
+	for i in `seq 0 1 $1`; do
+		echo "user.$foo=\"0xbabe\""
+	done ) > $tmp.$1.attrs
+	$SETFATTR_PROG --restore=$tmp.$1.attrs $2
 }
 
 create_data()
 {
-	size=`expr \( $1 + 1 \) \* 4096`
-	$XFS_IO_PROG -f -c "truncate $size" $2 > /dev/null 2>&1
-	for foo in `seq $1 -1 0`; do
-		let offset=$foo*4096
-		$XFS_IO_PROG -f -c "resvsp $offset 4096" $2 > /dev/null 2>&1
+	local blocks=$1
+	local cmd_str
+
+	for off in `seq $blocks -1 0`; do
+		cmd_str="-c \"resvsp $((off * 4096)) 4096\" $cmd_str"
 	done
+	$XFS_IO_PROG -f -c "truncate $((($blocks + 1) * 4096))" \
+			$cmd_str $2 >> seqres.full 2>&1
 }
 
 # create the designated file with a certain number of attributes and a certain
@@ -119,6 +123,27 @@ create_target_attr_last()
 	create_attrs $nattrs $target
 }
 
+do_fsr()
+{
+	local n=$1
+	local i=$2
+	local j
+
+	for j in `seq 5 1 20`; do
+		create_target_attr_first $i $j $targ.$i.$j >> $seqres.full 2>&1
+	done
+	xfs_bmap -vp $targ.$i.* >> $seqres.full 2>&1
+	FSRXFSTEST=true xfs_fsr -d -v -C $n $targ.$i.* >> $seqres.full 2>&1
+	xfs_bmap -vp $targ.$i.* >> $seqres.full 2>&1
+	for j in `seq 5 1 20`; do
+		create_target_attr_last $i $j $targ.$i.$j >> $seqres.full 2>&1
+	done
+	xfs_bmap -vp $targ.$i.* >> $seqres.full 2>&1
+	FSRXFSTEST=true xfs_fsr -d -v -C $n $targ.$i.* >> $seqres.full 2>&1
+	xfs_bmap -vp $targ.$i.* >> $seqres.full 2>&1
+}
+
+
 # use a small filesystem so we can control freespace easily
 _scratch_mkfs_sized $((50 * 1024 * 1024)) >> $seqres.full 2>&1
 _scratch_mount
@@ -154,19 +179,9 @@ targ=$SCRATCH_MNT/fsr_test_file.$$
 for n in `seq 4 1 12`; do
 	echo "*** n == $n ***" >> $seqres.full
 	for i in `seq 5 1 15`; do
-		for j in `seq 5 1 20`; do
-			create_target_attr_first $i $j $targ.$i.$j >> $seqres.full 2>&1
-		done
-		xfs_bmap -vp $targ.$i.* >> $seqres.full 2>&1
-		FSRXFSTEST=true xfs_fsr -d -v -C $n $targ.$i.* >> $seqres.full 2>&1
-		xfs_bmap -vp $targ.$i.* >> $seqres.full 2>&1
-		for j in `seq 5 1 20`; do
-			create_target_attr_last $i $j $targ.$i.$j >> $seqres.full 2>&1
-		done
-		xfs_bmap -vp $targ.$i.* >> $seqres.full 2>&1
-		FSRXFSTEST=true xfs_fsr -d -v -C $n $targ.$i.* >> $seqres.full 2>&1
-		xfs_bmap -vp $targ.$i.* >> $seqres.full 2>&1
+		do_fsr $n $i &
 	done
+	wait
 done
 
 _scratch_unmount
-- 
2.45.2