diff --git a/t/perl/test_benchmark.pl b/t/perl/test_benchmark.pl
new file mode 100644
index 00000000..8559aba2
--- /dev/null
+++ b/t/perl/test_benchmark.pl
@@ -0,0 +1,58 @@
+use v5.10.0;
+use strict;
+use warnings;
+use Time::HiRes qw(sleep);
+use autodie qw(:all);
+
+my $psgi = $ARGV[0] || 't/perl/test_hello.psgi';
+
+for my $use_thunder_lock (0,1) {
+    for my $cpu_multiplier (1,2,4,8,16,32,64) {
+        my $procs = 16 * $cpu_multiplier;
+        my $desc = sprintf "%3d procs %2s/TL", $procs, ($use_thunder_lock ? "w" : "wo");
+        my $tl_cl = $use_thunder_lock ? "--thunder-lock --lock-engine ipcsem --ftok $psgi" : "";
+
+        #say STDERR "Now testing $desc";
+        system q[for p in $(ps auxf|grep uwsgi.*--disable-logging|grep -v grep|awk '{print $2}'); do kill $p; done];
+        system qq[./uwsgi --http 127.0.0.1:8080 --processes $procs --psgi $psgi --disable-logging $tl_cl >/dev/null 2>&1 &];
+        sleep 0.5;
+        chomp(my $ab = qx[http_proxy= ab -n 10000 -c 32 http://localhost:8080/ 2>&1]);
+        my ($seconds) = $ab =~ m[Time taken for tests:\s+([0-9.]+) seconds];
+        say STDERR "$seconds\t$desc";
+        system q[for p in $(ps auxf|grep uwsgi.*--disable-logging|grep -v grep|awk '{print $2}'); do kill $p; done];
+        sleep 0.5;
+    }
+}
+
+__END__
+$ perl t/perl/test_benchmark.pl t/perl/test_sleepy.psgi
+7.128    16 procs wo/TL
+3.547    32 procs wo/TL
+2.038    64 procs wo/TL
+2.880   128 procs wo/TL
+4.578   256 procs wo/TL
+8.199   512 procs wo/TL
+13.379  1024 procs wo/TL
+7.123    16 procs  w/TL
+3.559    32 procs  w/TL
+2.036    64 procs  w/TL
+1.972   128 procs  w/TL
+2.026   256 procs  w/TL
+2.172   512 procs  w/TL
+2.412   1024 procs  w/TL
+
+$ perl t/perl/test_benchmark.pl t/perl/test_hello.psgi
+1.392    16 procs wo/TL
+1.743    32 procs wo/TL
+2.374    64 procs wo/TL
+3.530   128 procs wo/TL
+4.984   256 procs wo/TL
+8.258   512 procs wo/TL
+9.343   1024 procs wo/TL
+1.134    16 procs  w/TL
+1.284    32 procs  w/TL
+1.152    64 procs  w/TL
+1.084   128 procs  w/TL
+1.286   256 procs  w/TL
+1.559   512 procs  w/TL
+1.537   1024 procs  w/TL
diff --git a/t/perl/test_sleepy.psgi b/t/perl/test_sleepy.psgi
new file mode 100644
index 00000000..50569a8c
--- /dev/null
+++ b/t/perl/test_sleepy.psgi
@@ -0,0 +1,20 @@
+use strict;
+use warnings;
+use Time::HiRes qw(usleep);
+
+sub {
+    my $env = shift;
+
+    die "PANIC: We are expecting to support psgix.cleanup" unless $env->{'psgix.cleanup'};
+    my $msleep = 2 * 1000 + int rand 7 * 1000; # 2..10ms
+    my $csleep = 2 * 1000 + int rand 7 * 1000; # 2..10ms
+
+    push @{$env->{'psgix.cleanup.handlers'}} => sub { usleep($csleep) };
+    usleep($msleep);
+
+    return [
+        200,
+        [],
+        [ "Responding. Slept $msleep us in the main phase, sleeping $csleep us in the cleanup phase" ],
+    ];
+}