PATCH 8/10 numactl - Fix mempolicy regression test for assymetric platforms and
memoryless nodes.
Against: numactl-1.0.3-rc1
"probe the hardware" to find nodes with sufficient pages for
the test. Then, instead of using fixed nodes 0 and 1, use the
first two nodes with sufficient memory. When testing all of the
nodes, test only nodes with sufficient memory.
Note: I think this still won't work on HP platforms with "DMA only"
pseudo-nodes. Haven't had a chance to test there yet.
Signed-off-by: Lee Schermerhorn <lee.schermerhorn@xxxxxx>
test/regress | 134 +++++++++++++++++++++++++++++++++++------------------------
1 file changed, 81 insertions(+), 53 deletions(-)
Index: numactl-1.0.3-rc1/test/regress
===================================================================
--- numactl-1.0.3-rc1.orig/test/regress 2008-03-27 17:59:07.000000000 -0400
+++ numactl-1.0.3-rc1/test/regress 2008-03-27 18:01:26.000000000 -0400
@@ -18,14 +18,16 @@ SIZE=$[15 * $MB]
DEMOSIZE=$[10 * $MB]
STAT_INTERVAL=5
-PAGESIZE=`./pagesize`
-PAGES=`expr $SIZE / $PAGESIZE`
-HALFPAGES=`expr $PAGES / 2`
-HALFPAGES=`expr $HALFPAGES - 100`
-DOUBLEPAGES=`expr $PAGES \* 2`
-DOUBLEPAGES=`expr $DOUBLEPAGES - 200`
+PAGESIZE=$(./pagesize)
+PAGES=$[ $SIZE / $PAGESIZE ]
+HALFPAGES=$[ $PAGES / 2 ]
+HALFPAGES=$[ $HALFPAGES - 100 ]
+DOUBLEPAGES=$[ $PAGES * 2 ]
+DOUBLEPAGES=$[ expr $DOUBLEPAGES - 200 ]
+NEEDPAGES=$[ $DOUBLEPAGES + $DOUBLEPAGES / 5 ] # 20% spare
declare -i maxnode
+declare -a node
# =====================================================================
numactl() {
@@ -47,6 +49,32 @@ nstat() {
done
}
+probe_hardware()
+{
+ declare -i n=0
+
+ numnodes=$(numactl --hardware | awk '/^available/ { print $2 }')
+ maxnode=$(expr $numnodes - 1)
+
+ # find nodes with at least NEEDPAGES of free memory
+ for i in $(seq 0 $maxnode) ; do
+ free=$(numactl --hardware | fgrep "$i free" | awk '{print $4}')
+ free=$(( free * MB ))
+ if [[ $((free / PAGESIZE)) -ge $NEEDPAGES ]]; then
+ node[$n]=$i
+ n=$((n + 1 ))
+ fi
+ done
+ numnodes=$n
+ maxnode=$(expr $numnodes - 1)
+
+ if [ $numnodes -lt 2 ] ; then
+ echo "need at least two nodes with at least $NEEDPAGES each of"
+ echo "free memory for mempolicy regression tests"
+ exit 1
+ fi
+}
+
# =========================================================================
_test_process_state() {
echo '=>testing numactl' "$@" "memhog $SIZE"
@@ -55,42 +83,45 @@ _test_process_state() {
test_process_state()
{
- _test_process_state --interleave=1
+ declare -i n0=${node[0]} n1=${node[1]}
+
+ _test_process_state --interleave=$n1
- a0=`nstat interleave_hit 0`
- a1=`nstat interleave_hit 1`
- _test_process_state --interleave=0,1
- b0=`nstat interleave_hit 0`
- b1=`nstat interleave_hit 1`
+ a0=`nstat interleave_hit $n0`
+ a1=`nstat interleave_hit $n1`
+ _test_process_state --interleave=$n0,$n1
+ b0=`nstat interleave_hit $n0`
+ b1=`nstat interleave_hit $n1`
if [ $(expr $b1 - $a1) -lt $HALFPAGES ]; then
- echo "interleaving test failed 1 $b1 $a1"
+ echo "interleaving test failed $n1 $b1 $a1"
failed
fi
if [ $(expr $b0 - $a0) -lt $HALFPAGES ]; then
- echo "interleaving test failed 0 $b0 $a0"
+ echo "interleaving test failed $n0 $b0 $a0"
failed
fi
_test_process_state --interleave=all
_test_process_state --membind=all
- a=$(expr $(nstat numa_hit 0) + $(nstat numa_hit 1))
- _test_process_state --membind=0,1
- b=$(expr $(nstat numa_hit 0) + $(nstat numa_hit 1))
+ a=$(expr $(nstat numa_hit $n0) + $(nstat numa_hit $n1))
+ _test_process_state --membind=$n0,$n1
+ b=$(expr $(nstat numa_hit $n0) + $(nstat numa_hit $n1))
if [ $(expr $b - $a) -lt $PAGES ]; then
- echo "membind test failed 1 $b $a ($PAGES)"
+ echo "membind test failed $n1 $b $a ($PAGES)"
failed
fi
- for i in $(seq $maxnode) ; do
- a=`nstat numa_hit $i`
- _test_process_state --membind=$i
- _test_process_state --preferred=$i
- b=`nstat numa_hit $i`
- if [ $(expr $b - $a) -lt $DOUBLEPAGES ]; then
- echo "membind/preferred on node $i failed $b $a"
- failed
- fi
+ for i in $(seq 0 $maxnode) ; do
+ declare -i ni=${node[$i]}
+ a=`nstat numa_hit $ni`
+ _test_process_state --membind=$ni
+ _test_process_state --preferred=$ni
+ b=`nstat numa_hit $ni`
+ if [ $(expr $b - $a) -lt $DOUBLEPAGES ]; then
+ echo "membind/preferred on node $ni failed $b $a"
+ failed
+ fi
done
_test_process_state --localalloc
}
@@ -105,39 +136,42 @@ _test_mbind() {
test_mbind()
{
- a0=`nstat interleave_hit 0`
- a1=`nstat interleave_hit 1`
- _test_mbind interleave 0,1
- b0=`nstat interleave_hit 0`
- b1=`nstat interleave_hit 1`
+ declare -i n0=${node[0]} n1=${node[1]}
+
+ a0=`nstat interleave_hit $n0`
+ a1=`nstat interleave_hit $n1`
+ _test_mbind interleave $n0,$n1
+ b0=`nstat interleave_hit $n0`
+ b1=`nstat interleave_hit $n1`
if [ $(expr $b1 - $a1) -lt $HALFPAGES ]; then
- echo "interleaving test 2 failed 1 $b1 $a1 expected $HALFPAGES"
+ echo "interleaving test 2 failed $n1 $b1 $a1 expected $HALFPAGES"
failed
fi
if [ $(expr $b0 - $a0) -lt $HALFPAGES ]; then
- echo "interleaving test 2 failed 0 $b0 $a0"
+ echo "interleaving test 2 failed $n0 $b0 $a0"
failed
fi
_test_mbind interleave all
a=$(expr $(nstat numa_hit 0) + $(nstat numa_hit 1))
- _test_mbind membind 0,1
+ _test_mbind membind $n0,1
b=$(expr $(nstat numa_hit 0) + $(nstat numa_hit 1))
if [ $(expr $b - $a) -lt $PAGES ]; then
echo "membind test 2 failed $b $a ($PAGES)"
failed
fi
- for i in $(seq $maxnode) ; do
- a=`nstat numa_hit $i`
- _test_mbind membind $i
- _test_mbind preferred $i
- b=`nstat numa_hit $i`
- if [ $(expr $b - $a) -lt $DOUBLEPAGES ]; then
- echo "membind/preferred test 2 on node $i failed $b $a"
- failed
- fi
+ for i in $(seq 0 $maxnode) ; do
+ declare -i ni=${node[$i]}
+ a=`nstat numa_hit $ni`
+ _test_mbind membind $ni
+ _test_mbind preferred $ni
+ b=`nstat numa_hit $ni`
+ if [ $(expr $b - $a) -lt $DOUBLEPAGES ]; then
+ echo "membind/preferred test 2 on node $ni failed $b $a"
+ failed
+ fi
done
}
@@ -151,16 +185,10 @@ main()
STAT_INTERVAL=`expr $STAT_INTERVAL \* 2`
fi
- numnodes=$(numactl --hardware | awk '/^available/ { print $2 }')
- maxnode=$(expr $numnodes - 1)
-
- if [ $numnodes -lt 2 ] ; then
- echo need at least two nodes for this
- exit 1
- fi
+ probe_hardware
- numactl --cpubind=0 /bin/true
- numactl --cpubind=1 /bin/true
+ numactl --cpubind=${node[0]} /bin/true
+ numactl --cpubind=${node[1]} /bin/true
numactl -s
numactl --hardware
--
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