Differential D6796 Diff 24859 swh/objstorage/backends/winery/bench.py

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swh/objstorage/backends/winery/bench.py

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				# Copyright (C) 2021 The Software Heritage developers
				olasdUnsubmitted Not Done Inline Actions Could you consider `s/bench/benchmark/` (at least in the module name)? I do wonder if it should move to the tests submodule too. olasd: Could you consider `s/bench/benchmark/` (at least in the module name)? I do wonder if it should…
				dacharyAuthorUnsubmitted Done Inline Actions Agreed, it was moved and renamed into winery_benchmark.py dachary: Agreed, it was moved and renamed into winery_benchmark.py
				# See the AUTHORS file at the top-level directory of this distribution
				# License: GNU General Public License version 3, or any later version
				# See top-level LICENSE file for more information

				import asyncio
				import concurrent.futures
				import logging
				import os
				import random
				import time

				from swh.objstorage.factory import get_objstorage

				LOGGER = logging.getLogger(__name__)


				def work(kind, args):
				return Worker(args).run(kind)


				class Worker(object):
				def __init__(self, args):
				self.args = args

				def run(self, kind):
				getattr(self, kind)()
				return kind

				def ro(self):
				self.winery = get_objstorage(
				cls="winery",
				readonly=True,
				base_dsn=self.args["base_dsn"],
				shard_dsn=self.args["shard_dsn"],
				shard_max_size=self.args["shard_max_size"],
				)
				with self.winery.base.db.cursor() as c:
				while True:
				c.execute(
				"SELECT signature FROM signature2shard WHERE inflight = FALSE "
				"ORDER BY random() LIMIT %s",
				(self.args["ro_worker_max_request"],),
				)
				if c.rowcount > 0:
				break
				LOGGER.info(f"Worker(ro, {os.getpid()}): empty, waiting")
				time.sleep(1)
				LOGGER.info(f"Worker(ro, {os.getpid()}): requesting {c.rowcount} objects")
				start = time.time()
				for row in c:
				obj_id = row[0].tobytes()
				assert self.winery.get(obj_id) is not None
				elapsed = time.time() - start
				LOGGER.info(f"Worker(ro, {os.getpid()}): finished ({elapsed:.2f}s)")

				def payloads_define(self):
				self.payloads = [
				3 * 1024,
				3 * 1024,
				3 * 1024,
				3 * 1024,
				3 * 1024,
				10 * 1024,
				13 * 1024,
				16 * 1024,
				70 * 1024,
				80 * 1024,
				]

				def rw(self):
				self.winery = get_objstorage(
				cls="winery",
				base_dsn=self.args["base_dsn"],
				shard_dsn=self.args["shard_dsn"],
				shard_max_size=self.args["shard_max_size"],
				)
				self.payloads_define()
				random_content = open("/dev/urandom", "rb")
				LOGGER.info(f"Worker(rw, {os.getpid()}): start")
				start = time.time()
				count = 0
				while len(self.winery.packers) == 0:
				content = random_content.read(random.choice(self.payloads))
				olasdUnsubmitted Not Done Inline Actions This generates only contents that are neatly aligned on 1024 byte multiple boundaries. Maybe it would make sense to add some fuzz/randomness to these object sizes, to exercise some obviously-unaligned reads in the ceph cluster. olasd: This generates only contents that are neatly aligned on 1024 byte multiple boundaries. Maybe it…
				dacharyAuthorUnsubmitted Done Inline Actions Good point. I added +1 to all of them which makes them all non-aligned. Neatly aligned objects are the exception anyways. dachary: Good point. I added +1 to all of them which makes them all non-aligned. Neatly aligned objects…
				self.winery.add(content=content)
				count += 1
				LOGGER.info(f"Worker(rw, {os.getpid()}): packing {count} objects")
				packer = self.winery.packers[0]
				packer.join()
				assert packer.exitcode == 0
				elapsed = time.time() - start
				LOGGER.info(f"Worker(rw, {os.getpid()}): finished ({elapsed:.2f}s)")


				class Bench(object):
				def __init__(self, args):
				self.args = args

				def timer_start(self):
				self.start = time.time()

				def timeout(self):
				return time.time() - self.start > self.args["duration"]

				async def run(self):
				self.timer_start()

				loop = asyncio.get_running_loop()

				workers_count = self.args["rw_workers"] + self.args["ro_workers"]
				with concurrent.futures.ProcessPoolExecutor(
				max_workers=workers_count
				) as executor:

				LOGGER.info("Bench.run: running")

				self.count = 0
				workers = set()

				def create_worker(kind):
				self.count += 1
				LOGGER.info(f"Bench.run: launched {kind} worker number {self.count}")
				return loop.run_in_executor(executor, work, kind, self.args)

				for kind in ["rw"] * self.args["rw_workers"] + ["ro"] * self.args[
				"ro_workers"
				]:
				workers.add(create_worker(kind))

				while len(workers) > 0:
				LOGGER.info(f"Bench.run: waiting for {len(workers)} workers")
				current = workers
				done, pending = await asyncio.wait(
				current, return_when=asyncio.FIRST_COMPLETED
				)
				workers = pending
				for task in done:
				kind = task.result()
				LOGGER.info(f"Bench.run: worker {kind} complete")
				if not self.timeout():
				workers.add(create_worker(kind))

				LOGGER.info("Bench.run: finished")

				return self.count