5 files changed, 153 insertions, 0 deletions
diff --git a/benchmarks/workloads/syscall/BUILD b/benchmarks/workloads/syscall/BUILD
new file mode 100644
index 000000000..e1ff3059b
--- /dev/null
+++ b/benchmarks/workloads/syscall/BUILD
@@ -0,0 +1,36 @@
+load("//benchmarks:defs.bzl", "py_library", "py_test", "requirement")
+
+package(
+    default_visibility = ["//benchmarks:__subpackages__"],
+    licenses = ["notice"],
+)
+
+py_library(
+    name = "syscall",
+    srcs = ["__init__.py"],
+)
+
+py_test(
+    name = "syscall_test",
+    srcs = ["syscall_test.py"],
+    python_version = "PY3",
+    deps = [
+        ":syscall",
+        requirement("attrs", False),
+        requirement("atomicwrites", False),
+        requirement("more-itertools", False),
+        requirement("pathlib2", False),
+        requirement("pluggy", False),
+        requirement("py", False),
+        requirement("pytest", True),
+        requirement("six", False),
+    ],
+)
+
+filegroup(
+    name = "files",
+    srcs = [
+        "Dockerfile",
+        "syscall.c",
+    ],
+)
diff --git a/benchmarks/workloads/syscall/Dockerfile b/benchmarks/workloads/syscall/Dockerfile
new file mode 100644
index 000000000..a2088d953
--- /dev/null
+++ b/benchmarks/workloads/syscall/Dockerfile
@@ -0,0 +1,6 @@
+FROM gcc:latest
+COPY . /usr/src/syscall
+WORKDIR /usr/src/syscall
+RUN gcc -O2 -o syscall syscall.c
+ENV count 1000000
+CMD ["sh", "-c", "./syscall ${count}"]
diff --git a/benchmarks/workloads/syscall/__init__.py b/benchmarks/workloads/syscall/__init__.py
new file mode 100644
index 000000000..dc9028faa
--- /dev/null
+++ b/benchmarks/workloads/syscall/__init__.py
@@ -0,0 +1,29 @@
+# python3
+# Copyright 2019 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Simple syscall test."""
+
+import re
+
+SAMPLE_DATA = "Called getpid syscall 1000000 times: 1117 ms, 500 ns each."
+
+
+# pylint: disable=unused-argument
+def sample(**kwargs) -> str:
+  return SAMPLE_DATA
+
+
+# pylint: disable=unused-argument
+def syscall_time_ns(data: str, **kwargs) -> int:
+  """Returns average system call time."""
+  return float(re.compile(r"(\d+)\sns each.").search(data).group(1))
diff --git a/benchmarks/workloads/syscall/syscall.c b/benchmarks/workloads/syscall/syscall.c
new file mode 100644
index 000000000..ded030397
--- /dev/null
+++ b/benchmarks/workloads/syscall/syscall.c
@@ -0,0 +1,55 @@
+// Copyright 2019 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+
+//     http://www.apache.org/licenses/LICENSE-2.0
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <time.h>
+#include <unistd.h>
+
+// Short program that calls getpid() a number of times and outputs time
+// diference from the MONOTONIC clock.
+int main(int argc, char** argv) {
+  struct timespec start, stop;
+  long result;
+  char buf[80];
+
+  if (argc < 2) {
+    printf("Usage:./syscall NUM_TIMES_TO_CALL");
+    return 1;
+  }
+
+  if (clock_gettime(CLOCK_MONOTONIC, &start)) return 1;
+
+  long loops = atoi(argv[1]);
+  for (long i = 0; i < loops; i++) {
+    syscall(SYS_gettimeofday, 0, 0);
+  }
+
+  if (clock_gettime(CLOCK_MONOTONIC, &stop)) return 1;
+
+  if ((stop.tv_nsec - start.tv_nsec) < 0) {
+    result = (stop.tv_sec - start.tv_sec - 1) * 1000;
+    result += (stop.tv_nsec - start.tv_nsec + 1000000000) / (1000 * 1000);
+  } else {
+    result = (stop.tv_sec - start.tv_sec) * 1000;
+    result += (stop.tv_nsec - start.tv_nsec) / (1000 * 1000);
+  }
+
+  printf("Called getpid syscall %d times: %lu ms, %lu ns each.\n", loops,
+         result, result * 1000000 / loops);
+
+  return 0;
+}
diff --git a/benchmarks/workloads/syscall/syscall_test.py b/benchmarks/workloads/syscall/syscall_test.py
new file mode 100644
index 000000000..72f027de1
--- /dev/null
+++ b/benchmarks/workloads/syscall/syscall_test.py
@@ -0,0 +1,27 @@
+# python3
+# Copyright 2019 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import sys
+
+import pytest
+
+from benchmarks.workloads import syscall
+
+
+def test_syscall_time_ns():
+  assert syscall.syscall_time_ns(syscall.sample()) == 500
+
+
+if __name__ == "__main__":
+  sys.exit(pytest.main([__file__]))