more-lat

1 files changed, 30 insertions, 6 deletions

diff --git a/tests.d/gem/gem_latency.test b/tests.d/gem/gem_latency.test
index b3ff07b..f3a25e4 100644
--- a/tests.d/gem/gem_latency.test
+++ b/tests.d/gem/gem_latency.test
@@ -4,38 +4,62 @@ test_invert=1
 [ -e $IGT_BENCHMARKS/gem_latency ] || return 1
 sudo -n true || return 1
 
+# Measure the execution delay vs contention, just for fun
 __gem:latency:dispatch__() {
     for (( c=0; c<$1; c++ )); do
         sudo $IGT_BENCHMARKS/gem_latency -t 2 -p $2 -f 1
     done
 }
-
-for p in 1 2 4 8 16 32 64 128; do
+for p in 1 2 4 8 16 32 64 128 256 512 1024; do
 	name="gem:latency:dispatch:$p"
 	test_name="$test_name $name"
 	eval "${name}_run() { __gem:latency:dispatch__ \$1 $p ; } "
 done
 
+# Measure the wakeup delay (each wakeup should be uncontended)
 __gem:latency:wait__() {
     for (( c=0; c<$1; c++ )); do
         sudo $IGT_BENCHMARKS/gem_latency -t 2 -w 2 -p $2 -f 2
     done
 }
-
-for p in 1 2 4 8 16 32 64 128; do
+for p in 1 2 4 8 16 32 64 128 256 512 1024; do
 	name="gem:latency:wait:$p"
 	test_name="$test_name $name"
 	eval "${name}_run() { __gem:latency:wait__ \$1 $p ; } "
 done
 
+# Measure the total CPU cycles for the uncontended wakeups
+__gem:latency:cpu__() {
+    for (( c=0; c<$1; c++ )); do
+        sudo $IGT_BENCHMARKS/gem_latency -t 2 -w 2 -p $2 -f 4
+    done
+}
+for p in 1 2 4 8 16 32 64 128 512 1024; do
+	name="gem:latency:cpu:$p"
+	test_name="$test_name $name"
+	eval "${name}_run() { __gem:latency:cpu__ \$1 $p ; } "
+done
+
+# Measure the wakeup delay for contended wakeups (multiple waiters per request)
 __gem:latency:herd__() {
     for (( c=0; c<$1; c++ )); do
         sudo $IGT_BENCHMARKS/gem_latency -t 2 -w 1 -c $2 -f 2
     done
 }
-
-for p in 0 1 2 4 8 16 32 64 128; do
+for p in 0 1 2 4 8 16 32 64 128 512 1024; do
 	name="gem:latency:herd:$p"
 	test_name="$test_name $name"
 	eval "${name}_run() { __gem:latency:herd__ \$1 $p ; } "
 done
+
+# Measure the impact of contended wakeups on the RealTime waiter
+__gem:latency:realtime__() {
+    for (( c=0; c<$1; c++ )); do
+        sudo $IGT_BENCHMARKS/gem_latency -t 2 -w 1 -c $2 -R -f 3
+    done
+}
+for p in 0 1 2 4 8 16 32 64 128 512 1024; do
+	name="gem:latency:realtime:$p"
+	test_name="$test_name $name"
+	eval "${name}_run() { __gem:latency:realtime__ \$1 $p ; } "
+done