[DRAFT - perf test] [Storage Blob] XML deserialization perf combo by l0lawrence · Pull Request #46952 · Azure/azure-sdk-for-python

l0lawrence · 2026-05-18T16:30:20Z

Perf testing branch — Combines three changesets to evaluate XML deserialization performance:

Base: [Storage Blob] Migrating to TypeSpec #45133 (storage blob TypeSpec migration, storageblob3)
Overlay: perf-related _generated/ files from Deserialization Perf Test #46600
Encapsulates: regenerator output from [Python] Speed up xml deserialization microsoft/typespec#10698

Files overlaid from #46600

File	Source	Lines
`_generated/_utils/model_base.py`	typespec#10698 generator output (XML deserializer helpers, `_build_xml_field_plan`)	+392
`_generated/_utils/serialization.py`	Header deserialization fast path	+21
`_generated/models/_models.py`	Regenerated with per-field `deserializer=` bindings	+179/-9
`_generated/models/_patch.py`	Anna's customizations (precomputed defaults, XML field plan) — `_asdict` shim preserved	+29/-6

Intentionally NOT overlaid

_generated/operations/_operations.py and aio/operations/_operations.py from Deserialization Perf Test #46600 carry unrelated TypeSpec source drift (parameter reordering, doc rewrites), not perf-related.

Do NOT merge

Draft branch for perf-test benchmarking only.

Refs #45133, #46600, microsoft/typespec#10698.

…ndition MatchConditions.Unconditionally represents the default behavior (no condition applied), so it should not count as a user-specified access condition. Previously, the truthy check on match_condition caused Unconditionally to be treated as a condition, preventing the overwrite=False path from injecting IfMissing. Also drop the standalone etag check since etag is only meaningful when paired with a match_condition. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

# Conflicts: # sdk/storage/azure-storage-blob/samples/blob_samples_authentication.py # sdk/storage/azure-storage-blob/samples/blob_samples_authentication_async.py # sdk/storage/azure-storage-blob/samples/blob_samples_batch_delete_blobs.py # sdk/storage/azure-storage-blob/samples/blob_samples_client_side_encryption.py # sdk/storage/azure-storage-blob/samples/blob_samples_common.py # sdk/storage/azure-storage-blob/samples/blob_samples_common_async.py # sdk/storage/azure-storage-blob/samples/blob_samples_container_access_policy.py # sdk/storage/azure-storage-blob/samples/blob_samples_container_access_policy_async.py # sdk/storage/azure-storage-blob/samples/blob_samples_containers.py # sdk/storage/azure-storage-blob/samples/blob_samples_containers_async.py # sdk/storage/azure-storage-blob/samples/blob_samples_query.py # sdk/storage/azure-storage-blob/samples/blob_samples_service.py # sdk/storage/azure-storage-blob/samples/blob_samples_service_async.py # sdk/storage/azure-storage-blob/samples/blob_samples_walk_blob_hierarchy.py # sdk/storage/azure-storage-blob/tests/avro/test_avro.py # sdk/storage/azure-storage-blob/tests/avro/test_avro_async.py # sdk/storage/azure-storage-blob/tests/encryption_test_helper.py # sdk/storage/azure-storage-blob/tests/perfstress_tests/T1_legacy_tests/_test_base_legacy.py # sdk/storage/azure-storage-blob/tests/perfstress_tests/T1_legacy_tests/list_blobs.py # sdk/storage/azure-storage-blob/tests/perfstress_tests/_test_base.py # sdk/storage/azure-storage-blob/tests/perfstress_tests/download_basic.py # sdk/storage/azure-storage-blob/tests/perfstress_tests/list_blobs.py # sdk/storage/azure-storage-blob/tests/settings/testcase.py # sdk/storage/azure-storage-blob/tests/test_append_blob.py # sdk/storage/azure-storage-blob/tests/test_append_blob_async.py # sdk/storage/azure-storage-blob/tests/test_blob_access_conditions.py # sdk/storage/azure-storage-blob/tests/test_blob_access_conditions_async.py # sdk/storage/azure-storage-blob/tests/test_blob_client.py # sdk/storage/azure-storage-blob/tests/test_blob_client_async.py # sdk/storage/azure-storage-blob/tests/test_blob_encryption.py # sdk/storage/azure-storage-blob/tests/test_blob_encryption_async.py # sdk/storage/azure-storage-blob/tests/test_blob_encryption_v2.py # sdk/storage/azure-storage-blob/tests/test_blob_encryption_v2_async.py # sdk/storage/azure-storage-blob/tests/test_blob_service_properties.py # sdk/storage/azure-storage-blob/tests/test_blob_service_properties_async.py # sdk/storage/azure-storage-blob/tests/test_blob_tags.py # sdk/storage/azure-storage-blob/tests/test_blob_tags_async.py # sdk/storage/azure-storage-blob/tests/test_block_blob.py # sdk/storage/azure-storage-blob/tests/test_block_blob_async.py # sdk/storage/azure-storage-blob/tests/test_block_blob_sync_copy.py # sdk/storage/azure-storage-blob/tests/test_block_blob_sync_copy_async.py # sdk/storage/azure-storage-blob/tests/test_common_blob.py # sdk/storage/azure-storage-blob/tests/test_common_blob_async.py # sdk/storage/azure-storage-blob/tests/test_container.py # sdk/storage/azure-storage-blob/tests/test_container_async.py # sdk/storage/azure-storage-blob/tests/test_cpk_n.py # sdk/storage/azure-storage-blob/tests/test_cpk_n_async.py # sdk/storage/azure-storage-blob/tests/test_get_blob.py # sdk/storage/azure-storage-blob/tests/test_get_blob_async.py # sdk/storage/azure-storage-blob/tests/test_helpers.py # sdk/storage/azure-storage-blob/tests/test_large_block_blob.py # sdk/storage/azure-storage-blob/tests/test_logging.py # sdk/storage/azure-storage-blob/tests/test_logging_async.py # sdk/storage/azure-storage-blob/tests/test_page_blob.py # sdk/storage/azure-storage-blob/tests/test_page_blob_async.py # sdk/storage/azure-storage-blob/tests/test_quick_query.py # sdk/storage/azure-storage-blob/tests/test_quick_query_async.py # sdk/storage/azure-storage-blob/tests/test_retry.py # sdk/storage/azure-storage-blob/tests/test_retry_async.py # sdk/storage/azure-storage-blob/tests/test_transports.py

Overlays the perf-related _generated/ changes from PR Azure#46600 (antisch-xmlperf2) onto the storage blob TypeSpec migration (PR Azure#45133), to evaluate combined perf: - _generated/_utils/model_base.py: XML deserializer helpers and field-plan builder (output of microsoft/typespec PR Azure#10698 generator changes). - _generated/_utils/serialization.py: Header deserialization fast path. - _generated/models/_models.py: Regenerated with per-field deserializer bindings using the new XML deserializer helpers. - _generated/models/_patch.py: Anna's customizations (precomputed defaults, XML field plan). Preserves the _asdict backcompat shim for Azure CLI/knack. Operations files intentionally NOT overlaid because Anna's branch carries unrelated TypeSpec source drift (parameter reordering, doc rewrites). Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

l0lawrence · 2026-05-18T16:32:39Z

/azp run python - storage-blob - perf

azure-pipelines · 2026-05-18T16:32:46Z

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azure-pipelines · 2026-05-18T16:45:39Z

Azure Pipelines successfully started running 1 pipeline(s).

l0lawrence · 2026-05-19T04:08:10Z

/azp run python - storage-blob - perf

azure-pipelines · 2026-05-19T04:08:24Z

Azure Pipelines successfully started running 1 pipeline(s).

l0lawrence added 30 commits February 10, 2026 13:19

gen code

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patch

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imports

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async patch

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edit

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make models not typedDict

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patch update

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update

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missed import

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import

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conftest

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models

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deserialize

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order of params in stage_block()

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blob -> block_blob for query()

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patch updates

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deserilizaed

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blob clinet

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client updates

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datetime

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patch etag quote???

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snapshot

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explicitly check modified access conditions is not None

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custom range policy

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model base changes**

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regen off of feature branch w/ one client + rangeHeader()

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content-type fixes cat made

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x-ms-requires-sync

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clientName the old operations

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model base deserialization edit

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l0lawrence and others added 24 commits April 20, 2026 12:06

formatting

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formatting

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strip snapshot

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Merge branch 'main' into storageblob3

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wip add backcompat model support

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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Merge branch 'main' into storageblob3

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bandit fix

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mod _Model

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keep here

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this

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fix pylint + patch

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model gen files that use nosec

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need to ensure matchcondition/etag not passed through either

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Merge branch 'main' into storageblob3

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Merge branch 'main' into storageblob3

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gen off of main

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Merge branch 'main' into storageblob3

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wip changes from running against azure cli

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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

wip changes from running against azure cli

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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

regen

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Merge branch 'main' into storageblob3

7b45ec2

github-actions Bot added the Storage Storage Service (Queues, Blobs, Files) label May 18, 2026

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[DRAFT - perf test] [Storage Blob] XML deserialization perf combo#46952

[DRAFT - perf test] [Storage Blob] XML deserialization perf combo#46952
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l0lawrence commented May 18, 2026

Files overlaid from #46600

Intentionally NOT overlaid

Do NOT merge

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l0lawrence commented May 18, 2026 •

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