486 lines
18 KiB
Python
486 lines
18 KiB
Python
#
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# Copyright(c) 2019-2021 Intel Corporation
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# Copyright(c) 2024 Huawei Technologies Co., Ltd.
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# SPDX-License-Identifier: BSD-3-Clause
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#
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import pytest
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from enum import Enum, auto
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from api.cas import casadm
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from api.cas.cache_config import SeqCutOffPolicy, CacheMode, CacheLineSize
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from api.cas.core import SEQ_CUTOFF_THRESHOLD_MAX
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from core.test_run import TestRun
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from storage_devices.disk import DiskType, DiskTypeSet, DiskTypeLowerThan
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from test_tools.fio.fio import Fio
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from test_tools.fio.fio_param import ReadWrite, IoEngine, CpusAllowedPolicy
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from test_tools.os_tools import sync, get_dut_cpu_physical_cores
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from test_tools.udev import Udev
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from type_def.size import Size, Unit
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class VerifyType(Enum):
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NEGATIVE = auto()
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POSITIVE = auto()
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EQUAL = auto()
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@pytest.mark.parametrize(
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"cache_mode, io_type, io_type_last",
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[
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(CacheMode.WB, ReadWrite.write, ReadWrite.randwrite),
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(CacheMode.WT, ReadWrite.write, ReadWrite.randwrite),
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(CacheMode.WO, ReadWrite.write, ReadWrite.randwrite),
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(CacheMode.WA, ReadWrite.read, ReadWrite.randread),
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],
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)
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@pytest.mark.parametrizex("cache_line_size", CacheLineSize)
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@pytest.mark.require_disk("cache", DiskTypeSet([DiskType.optane, DiskType.nand]))
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@pytest.mark.require_disk("core", DiskTypeLowerThan("cache"))
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def test_seq_cutoff_multi_core(cache_mode, io_type, io_type_last, cache_line_size):
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"""
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title: Sequential cut-off tests during sequential and random IO 'always' policy with 4 cores
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description: |
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Testing if amount of data written to cache after sequential writes for different
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sequential cut-off thresholds on each core, while running sequential IO on 3 out of 4
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cores and random IO against the last core, is correct.
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pass_criteria:
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- Amount of written blocks to cache is less or equal than amount set
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with sequential cut-off threshold for three first cores.
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- Amount of written blocks to cache is equal to io size run against last core.
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"""
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with TestRun.step("Prepare cache and core devices"):
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cache_device = TestRun.disks["cache"]
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core_device = TestRun.disks["core"]
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cache_device.create_partitions(
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[(SEQ_CUTOFF_THRESHOLD_MAX * 4 + Size(value=5, unit=Unit.GibiByte))]
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)
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core_device.create_partitions(
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[(SEQ_CUTOFF_THRESHOLD_MAX + Size(value=10, unit=Unit.GibiByte))] * 4
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)
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cache_part = cache_device.partitions[0]
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core_parts = core_device.partitions
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with TestRun.step("Disable udev"):
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Udev.disable()
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with TestRun.step(
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f"Start cache in {cache_mode} mode and add {len(core_parts)} cores to the cache"
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):
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cache = casadm.start_cache(
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cache_dev=cache_part, cache_mode=cache_mode, force=True, cache_line_size=cache_line_size
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)
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core_list = [cache.add_core(core_dev=core_part) for core_part in core_parts]
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with TestRun.step("Set sequential cut-off parameters for all cores"):
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writes_before_list = []
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fio_additional_size = Size(10, Unit.Blocks4096)
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thresholds_list = [
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Size.generate_random_size(
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min_size=1,
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max_size=SEQ_CUTOFF_THRESHOLD_MAX.get_value(Unit.KibiByte),
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unit=Unit.KibiByte,
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)
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for _ in core_list
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]
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io_sizes_list = [
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(threshold_size + fio_additional_size).align_down(0x1000)
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for threshold_size in thresholds_list
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]
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for core, threshold in zip(core_list, thresholds_list):
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core.set_seq_cutoff_policy(SeqCutOffPolicy.always)
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core.set_seq_cutoff_threshold(threshold)
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with TestRun.step("Prepare sequential IO against first three cores"):
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block_size = Size(4, Unit.KibiByte)
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fio = Fio().create_command().io_engine(IoEngine.libaio).block_size(block_size).direct(True)
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for core, io_size in zip(core_list[:-1], io_sizes_list[:-1]):
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fio_job = fio.add_job(f"core_{core.core_id}")
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fio_job.size(io_size)
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fio_job.read_write(io_type)
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fio_job.target(core.path)
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writes_before_list.append(core.get_statistics().block_stats.cache.writes)
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with TestRun.step("Prepare random IO against the last core"):
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fio_job = fio.add_job(f"core_{core_list[-1].core_id}")
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fio_job.size(io_sizes_list[-1])
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fio_job.read_write(io_type_last)
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fio_job.target(core_list[-1].path)
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writes_before_list.append(core_list[-1].get_statistics().block_stats.cache.writes)
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with TestRun.step("Run fio against all cores"):
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fio.run()
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with TestRun.step("Verify writes to cache count after IO"):
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margins = [
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min(block_size * (core.get_seq_cut_off_parameters().promotion_count - 1), threshold)
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for core, threshold in zip(core_list[:-1], thresholds_list[:-1])
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]
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margin = Size.zero()
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for size in margins:
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margin += size
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for core, writes, threshold, io_size in zip(
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core_list[:-1], writes_before_list[:-1], thresholds_list[:-1], io_sizes_list[:-1]
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):
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verify_writes_count(
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core=core,
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writes_before=writes,
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threshold=threshold,
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io_size=io_size,
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ver_type=VerifyType.POSITIVE,
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io_margin=margin,
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)
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verify_writes_count(
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core=core_list[-1],
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writes_before=writes_before_list[-1],
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threshold=thresholds_list[-1],
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io_size=io_sizes_list[-1],
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ver_type=VerifyType.EQUAL,
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)
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@pytest.mark.parametrize(
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"cache_mode, io_type, io_type_last",
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[
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(CacheMode.WB, ReadWrite.write, ReadWrite.randwrite),
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(CacheMode.WT, ReadWrite.write, ReadWrite.randwrite),
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(CacheMode.WA, ReadWrite.read, ReadWrite.randread),
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(CacheMode.WO, ReadWrite.write, ReadWrite.randwrite),
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],
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)
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@pytest.mark.parametrizex("cache_line_size", CacheLineSize)
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@pytest.mark.require_disk("cache", DiskTypeSet([DiskType.optane, DiskType.nand]))
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@pytest.mark.require_disk("core", DiskTypeLowerThan("cache"))
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def test_seq_cutoff_multi_core_io_pinned(cache_mode, io_type, io_type_last, cache_line_size):
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"""
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title: Sequential cut-off tests during sequential and random IO 'always' policy with 4 cores
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description: |
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Testing if amount of data written to cache after sequential writes for different
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sequential cut-off thresholds on each core, while running sequential IO, pinned,
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on 3 out of 4 cores and random IO against the last core, is correct.
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pass_criteria:
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- Amount of written blocks to cache is less or equal than amount set
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with sequential cut-off threshold for three first cores.
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- Amount of written blocks to cache is equal to io size run against last core.
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"""
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with TestRun.step("Partition cache and core devices"):
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cache_device = TestRun.disks["cache"]
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core_device = TestRun.disks["core"]
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cache_device.create_partitions(
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[(SEQ_CUTOFF_THRESHOLD_MAX * 4 + Size(value=5, unit=Unit.GibiByte))]
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)
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core_device.create_partitions(
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[(SEQ_CUTOFF_THRESHOLD_MAX + Size(value=10, unit=Unit.GibiByte))] * 4
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)
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cache_part = cache_device.partitions[0]
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core_parts = core_device.partitions
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with TestRun.step("Disable udev"):
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Udev.disable()
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with TestRun.step(
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f"Start cache in {cache_mode} mode and add {len(core_parts)} cores to the cache"
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):
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cache = casadm.start_cache(
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cache_dev=cache_part,
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cache_mode=cache_mode,
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force=True,
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cache_line_size=cache_line_size,
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)
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core_list = [cache.add_core(core_dev=core_part) for core_part in core_parts]
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with TestRun.step(f"Set sequential cut-off parameters for all cores"):
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writes_before_list = []
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fio_additional_size = Size(10, Unit.Blocks4096)
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thresholds_list = [
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Size.generate_random_size(
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min_size=1,
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max_size=SEQ_CUTOFF_THRESHOLD_MAX.get_value(Unit.KibiByte),
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unit=Unit.KibiByte,
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)
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for _ in core_list
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]
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io_sizes_list = [
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(threshold_size + fio_additional_size).align_down(0x1000)
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for threshold_size in thresholds_list
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]
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for core, threshold in zip(core_list, thresholds_list):
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core.set_seq_cutoff_policy(SeqCutOffPolicy.always)
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core.set_seq_cutoff_threshold(threshold)
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with TestRun.step("Prepare sequential IO against first three cores"):
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fio = (
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Fio()
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.create_command()
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.io_engine(IoEngine.libaio)
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.block_size(Size(1, Unit.Blocks4096))
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.direct(True)
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.cpus_allowed(get_dut_cpu_physical_cores())
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.cpus_allowed_policy(CpusAllowedPolicy.split)
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)
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# Run sequential IO against first three cores
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for core, io_size in zip(core_list[:-1], io_sizes_list[:-1]):
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fio_job = fio.add_job(job_name=f"core_{core.core_id}")
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fio_job.size(io_size)
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fio_job.read_write(io_type)
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fio_job.target(core.path)
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writes_before_list.append(core.get_statistics().block_stats.cache.writes)
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# Run random IO against the last core
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fio_job = fio.add_job(job_name=f"core_{core_list[-1].core_id}")
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fio_job.size(io_sizes_list[-1])
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fio_job.read_write(io_type_last)
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fio_job.target(core_list[-1].path)
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writes_before_list.append(core_list[-1].get_statistics().block_stats.cache.writes)
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with TestRun.step("Running IO against all cores"):
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fio.run()
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with TestRun.step("Verifying writes to cache count after IO"):
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for core, writes, threshold, io_size in zip(
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core_list[:-1], writes_before_list[:-1], thresholds_list[:-1], io_sizes_list[:-1]
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):
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verify_writes_count(
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core=core,
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writes_before=writes,
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threshold=threshold,
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io_size=io_size,
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ver_type=VerifyType.POSITIVE,
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)
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verify_writes_count(
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core=core_list[-1],
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writes_before=writes_before_list[-1],
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threshold=thresholds_list[-1],
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io_size=io_sizes_list[-1],
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ver_type=VerifyType.EQUAL,
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)
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@pytest.mark.parametrize(
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"policy, verify_type",
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[
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(SeqCutOffPolicy.never, VerifyType.NEGATIVE),
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(SeqCutOffPolicy.always, VerifyType.POSITIVE),
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(SeqCutOffPolicy.full, VerifyType.NEGATIVE),
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],
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)
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@pytest.mark.parametrizex("cache_line_size", CacheLineSize)
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@pytest.mark.parametrizex("io_dir", [ReadWrite.write, ReadWrite.read])
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@pytest.mark.require_disk("cache", DiskTypeSet([DiskType.optane, DiskType.nand]))
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@pytest.mark.require_disk("core", DiskTypeLowerThan("cache"))
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def test_seq_cutoff_thresh(cache_line_size, io_dir, policy, verify_type):
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"""
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title: Sequential cut-off tests for writes and reads for 'never', 'always' and 'full' policies
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description: |
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Testing if amount of data written to cache after sequential writes and reads for different
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sequential cut-off policies with cache configured with different cache line size
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is valid for sequential cut-off threshold parameter, assuming that cache occupancy
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doesn't reach 100% during test.
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pass_criteria:
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- Amount of written blocks to cache is less or equal than amount set
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with sequential cut-off parameter in case of 'always' policy.
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- Amount of written blocks to cache is at least equal io size in case of 'never' and 'full'
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policy.
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"""
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with TestRun.step("Partition cache and core devices"):
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cache_device = TestRun.disks["cache"]
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core_device = TestRun.disks["core"]
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cache_device.create_partitions(
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[(SEQ_CUTOFF_THRESHOLD_MAX * 4 + Size(value=5, unit=Unit.GibiByte))]
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)
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core_device.create_partitions(
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[(SEQ_CUTOFF_THRESHOLD_MAX + Size(value=10, unit=Unit.GibiByte))]
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)
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cache_part = cache_device.partitions[0]
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core_part = core_device.partitions[0]
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with TestRun.step("Disable udev"):
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Udev.disable()
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with TestRun.step(f"Start cache and add core"):
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cache = casadm.start_cache(
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cache_dev=cache_part,
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force=True,
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cache_line_size=cache_line_size,
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)
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core = cache.add_core(core_dev=core_part)
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fio_additional_size = Size(10, Unit.Blocks4096)
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threshold = Size.generate_random_size(
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min_size=1,
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max_size=SEQ_CUTOFF_THRESHOLD_MAX.get_value(Unit.KibiByte),
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unit=Unit.KibiByte,
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)
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io_size = (threshold + fio_additional_size).align_down(0x1000)
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with TestRun.step(f"Setting cache sequential cut off policy mode to {policy}"):
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cache.set_seq_cutoff_policy(policy)
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with TestRun.step(f"Setting cache sequential cut off policy threshold to {threshold}"):
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cache.set_seq_cutoff_threshold(threshold)
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with TestRun.step("Prepare sequential IO against core"):
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sync()
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writes_before = core.get_statistics().block_stats.cache.writes
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fio = (
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Fio()
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.create_command()
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.io_engine(IoEngine.libaio)
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.size(io_size)
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.read_write(io_dir)
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.target(f"{core.path}")
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.direct()
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)
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with TestRun.step("Run fio"):
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fio.run()
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with TestRun.step("Verify writes to cache count"):
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verify_writes_count(
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core=core,
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writes_before=writes_before,
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threshold=threshold,
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io_size=io_size,
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ver_type=verify_type,
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)
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@pytest.mark.parametrizex("cache_line_size", CacheLineSize)
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@pytest.mark.parametrizex("io_dir", [ReadWrite.write, ReadWrite.read])
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@pytest.mark.require_disk("cache", DiskTypeSet([DiskType.optane, DiskType.nand]))
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@pytest.mark.require_disk("core", DiskTypeLowerThan("cache"))
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def test_seq_cutoff_thresh_fill(cache_line_size, io_dir):
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"""
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title: Sequential cut-off tests during writes and reads on full cache for 'full' policy
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description: |
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Testing if amount of data written to cache after sequential io against fully occupied
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cache for 'full' sequential cut-off policy with cache configured with different cache
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line sizes is valid for sequential cut-off threshold parameter.
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pass_criteria:
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- Amount of written blocks to cache is big enough to fill cache when 'never' sequential
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cut-off policy is set
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- Amount of written blocks to cache is less or equal than amount set
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with sequential cut-off parameter in case of 'full' policy.
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"""
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with TestRun.step("Partition cache and core devices"):
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cache_device = TestRun.disks["cache"]
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core_device = TestRun.disks["core"]
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cache_device.create_partitions(
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[(SEQ_CUTOFF_THRESHOLD_MAX + Size(value=5, unit=Unit.GibiByte))]
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)
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core_device.create_partitions(
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[(SEQ_CUTOFF_THRESHOLD_MAX + Size(value=10, unit=Unit.GibiByte))]
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)
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cache_part = cache_device.partitions[0]
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core_part = core_device.partitions[0]
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with TestRun.step("Disable udev"):
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Udev.disable()
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with TestRun.step(f"Start cache and add core"):
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cache = casadm.start_cache(
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cache_dev=cache_part,
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force=True,
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cache_line_size=cache_line_size,
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)
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core = cache.add_core(core_dev=core_part)
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fio_additional_size = Size(10, Unit.Blocks4096)
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threshold = Size.generate_random_size(
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min_size=1,
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max_size=SEQ_CUTOFF_THRESHOLD_MAX.get_value(Unit.KibiByte),
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unit=Unit.KibiByte,
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)
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io_size = (threshold + fio_additional_size).align_down(0x1000)
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with TestRun.step(f"Setting cache sequential cut off policy mode to {SeqCutOffPolicy.never}"):
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cache.set_seq_cutoff_policy(SeqCutOffPolicy.never)
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with TestRun.step("Prepare sequential IO against core"):
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sync()
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fio = (
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Fio()
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.create_command()
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.io_engine(IoEngine.libaio)
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.size(cache.size)
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.read_write(io_dir)
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.target(f"{core.path}")
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.direct()
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)
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with TestRun.step("Run fio"):
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fio.run()
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with TestRun.step("Check if cache is filled enough (expecting occupancy not less than 95%)"):
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occupancy_percentage = cache.get_statistics(percentage_val=True).usage_stats.occupancy
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if occupancy_percentage < 95:
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TestRun.fail(
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f"Cache occupancy is too small: {occupancy_percentage}, expected at least 95%"
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)
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with TestRun.step(f"Setting cache sequential cut off policy mode to {SeqCutOffPolicy.full}"):
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cache.set_seq_cutoff_policy(SeqCutOffPolicy.full)
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with TestRun.step(f"Setting cache sequential cut off policy threshold to {threshold}"):
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cache.set_seq_cutoff_threshold(threshold)
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with TestRun.step(f"Running sequential IO ({io_dir})"):
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sync()
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writes_before = core.get_statistics().block_stats.cache.writes
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fio = (
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Fio()
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.create_command()
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.io_engine(IoEngine.libaio)
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.size(io_size)
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.read_write(io_dir)
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.target(f"{core.path}")
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.direct()
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)
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|
|
with TestRun.step("Run fio"):
|
|
fio.run()
|
|
|
|
with TestRun.step("Verify writes to cache count"):
|
|
verify_writes_count(core, writes_before, threshold, io_size, VerifyType.POSITIVE)
|
|
|
|
|
|
def verify_writes_count(
|
|
core,
|
|
writes_before,
|
|
threshold,
|
|
io_size,
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|
ver_type=VerifyType.NEGATIVE,
|
|
io_margin=Size(8, Unit.KibiByte),
|
|
):
|
|
writes_after = core.get_statistics().block_stats.cache.writes
|
|
writes_difference = writes_after - writes_before
|
|
match ver_type:
|
|
case VerifyType.NEGATIVE:
|
|
if writes_difference < io_size:
|
|
TestRun.fail(
|
|
f"Wrong writes count: {writes_difference} , expected at least {io_size}"
|
|
)
|
|
case VerifyType.POSITIVE:
|
|
if writes_difference >= threshold + io_margin:
|
|
TestRun.fail(
|
|
f"Wrong writes count: {writes_difference} , expected at most "
|
|
f"{threshold + io_margin}"
|
|
)
|
|
case VerifyType.EQUAL:
|
|
if writes_difference != io_size:
|
|
TestRun.fail(f"Wrong writes count: {writes_difference} , expected {io_size}")
|