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# 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.
"""File I/O tests."""
import os
from benchmarks import suites
from benchmarks.harness import machine
from benchmarks.suites import helpers
from benchmarks.workloads import fio
# pylint: disable=too-many-arguments
# pylint: disable=too-many-locals
def run_fio(target: machine.Machine,
test: str,
ioengine: str = "sync",
size: int = 1024 * 1024 * 1024,
iodepth: int = 4,
blocksize: int = 1024 * 1024,
time: int = -1,
mount_dir: str = "",
filename: str = "file.dat",
tmpfs: bool = False,
ramp_time: int = 0,
**kwargs) -> str:
"""FIO benchmarks.
For more on fio see:
https://media.readthedocs.org/pdf/fio/latest/fio.pdf
Args:
target: A machine object.
test: The test to run (read, write, randread, randwrite, etc.)
ioengine: The engine for I/O.
size: The size of the generated file in bytes (if an integer) or 5g, 16k,
etc.
iodepth: The I/O for certain engines.
blocksize: The blocksize for reads and writes in bytes (if an integer) or
4k, etc.
time: If test is time based, how long to run in seconds.
mount_dir: The absolute path on the host to mount a bind mount.
filename: The name of the file to creat inside container. For a path of
/dir/dir/file, the script setup a volume like 'docker run -v
mount_dir:/dir/dir fio' and fio will create (and delete) the file
/dir/dir/file. If tmpfs is set, this /dir/dir will be a tmpfs.
tmpfs: If true, mount on tmpfs.
ramp_time: The time to run before recording statistics
**kwargs: Additional container options.
Returns:
The output of fio as a string.
"""
# Pull the image before dropping caches.
image = target.pull("fio")
if not mount_dir:
stdout, _ = target.run("pwd")
mount_dir = stdout.rstrip()
# Setup the volumes.
volumes = {mount_dir: {"bind": "/disk", "mode": "rw"}} if not tmpfs else None
tmpfs = {"/disk": ""} if tmpfs else None
# Construct a file in the volume.
filepath = os.path.join("/disk", filename)
# If we are running a read test, us fio to write a file and then flush file
# data from memory.
if "read" in test:
target.container(
image, volumes=volumes, tmpfs=tmpfs, **kwargs).run(
test="write",
ioengine="sync",
size=size,
iodepth=iodepth,
blocksize=blocksize,
path=filepath)
helpers.drop_caches(target)
# Run the test.
time_str = "--time_base --runtime={time}".format(
time=time) if int(time) > 0 else ""
res = target.container(
image, volumes=volumes, tmpfs=tmpfs, **kwargs).run(
test=test,
ioengine=ioengine,
size=size,
iodepth=iodepth,
blocksize=blocksize,
time=time_str,
path=filepath,
ramp_time=ramp_time)
target.run(
"rm {path}".format(path=os.path.join(mount_dir.rstrip(), filename)))
return res
@suites.benchmark(metrics=[fio.read_bandwidth, fio.read_io_ops], machines=1)
def read(*args, **kwargs):
"""Read test.
Args:
*args: None.
**kwargs: Additional container options.
Returns:
The output of fio.
"""
return run_fio(*args, test="read", **kwargs)
@suites.benchmark(metrics=[fio.read_bandwidth, fio.read_io_ops], machines=1)
def randread(*args, **kwargs):
"""Random read test.
Args:
*args: None.
**kwargs: Additional container options.
Returns:
The output of fio.
"""
return run_fio(*args, test="randread", **kwargs)
@suites.benchmark(metrics=[fio.write_bandwidth, fio.write_io_ops], machines=1)
def write(*args, **kwargs):
"""Write test.
Args:
*args: None.
**kwargs: Additional container options.
Returns:
The output of fio.
"""
return run_fio(*args, test="write", **kwargs)
@suites.benchmark(metrics=[fio.write_bandwidth, fio.write_io_ops], machines=1)
def randwrite(*args, **kwargs):
"""Random write test.
Args:
*args: None.
**kwargs: Additional container options.
Returns:
The output of fio.
"""
return run_fio(*args, test="randwrite", **kwargs)
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