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6fadba56cc18bebe6648e6aec09be1b0b93f4817
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Yibo Cai (Arm Technology China) 6fadba56cc utils: optimize UTF-8 validation 
UTF-8 string is now validated by boost::locale::conv::utf_to_utf, it
actually does string conversions which is more than necessary.  As
observed on Arm server, UTF-8 validation can become bottleneck under
heavy loads.

This patch introduces a brand new SIMD implementation supporting both
NEON and SSE, as well as a naive approach to handle short strings.
The naive approach is 3x faster than boost utf_to_utf, whilst SIMD
method outperforms naive approach 3x ~ 5x on Arm and x86. Details at
https://github.com/cyb70289/utf8/.

UTF-8 unit test is added to check various corner cases.

Signed-off-by: Yibo Cai <yibo.cai@arm.com>
Message-Id: <1543978498-12123-1-git-send-email-yibo.cai@arm.com>
2018-12-05 21:51:01 +02:00
..
perf
Merge "Optimize checksum_combine() for CRC32" from Tomek
2018-12-03 19:02:01 +02:00
snitch_property_files
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sstables
Merge "Correct the usage of row ttl and add write-read test" from Piotr
2018-12-04 19:47:28 +01:00
aggregate_fcts_test.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
allocation_strategy_test.cc
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anchorless_list_test.cc
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auth_passwords_test.cc
auth: Shorten random_device instance life-span
2018-09-12 12:14:21 +01:00
auth_resource_test.cc
tests: convert sprint() to format()
2018-11-01 13:16:17 +00:00
auth_test.cc
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batchlog_manager_test.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
big_decimal_test.cc
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broken_sstable_test.cc
Add a filename to a malformed_sstable_exception.
2018-12-03 13:50:23 -08:00
bytes_ostream_test.cc
bytes_ostream: add remove_suffix()
2018-06-25 09:21:47 +01:00
cache_flat_mutation_reader_test.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
caching_options_test.cc
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canonical_mutation_test.cc
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cartesian_product_test.cc
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castas_fcts_test.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
cell_locker_test.cc
tests/cell_locker_test: Prevent timeout underflow
2018-06-19 16:26:52 +03:00
checksum_utils_test.cc
tests: Rename libdeflate_test to checksum_utils_test
2018-12-03 14:40:35 +01:00
chunked_vector_test.cc
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clustering_ranges_walker_test.cc
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commitlog_test.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
compound_test.cc
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compress_test.cc
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config_test.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
continuous_data_consumer_test.cc
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counter_test.cc
atomic_cell: introduce fragmented buffer value interface
2018-05-31 15:51:11 +01:00
cql_assertions.cc
tests: convert sprint() to format()
2018-11-01 13:16:17 +00:00
cql_assertions.hh
Update seastar submodule
2018-11-21 00:01:44 +02:00
cql_auth_query_test.cc
tests: convert sprint() to format()
2018-11-01 13:16:17 +00:00
cql_auth_syntax_test.cc
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cql_query_test.cc
tests: split filtering tests from cql_query_test
2018-11-29 14:53:30 +01:00
cql_test_env.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
cql_test_env.hh
Update seastar submodule
2018-11-21 00:01:44 +02:00
crc_test.cc
utils/crc: calculate crc in parallel
2018-11-01 10:19:32 +02:00
database_test.cc
tests: convert sprint() to format()
2018-11-01 13:16:17 +00:00
duration_test.cc
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dynamic_bitset_test.cc
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ec2_snitch_test.cc
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enum_set_test.cc
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eventually.hh
tests/mutation_reader_test: Extract eventually_true() to eventually.hh
2018-08-27 19:24:05 +01:00
extensions_test.cc
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failure_injecting_allocation_strategy.hh
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filtering_test.cc
tests: add filtering with LIMIT test
2018-11-29 14:53:30 +01:00
flat_mutation_reader_assertions.hh
tests: convert sprint() to format()
2018-11-01 13:16:17 +00:00
flat_mutation_reader_test.cc
tests: convert sprint() to format()
2018-11-01 13:16:17 +00:00
flush_queue_test.cc
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fragmented_temporary_buffer_test.cc
utils: fragmented_temporary_buffer::view: add remove_prefix()
2018-09-18 17:22:59 +01:00
frozen_mutation_test.cc
atomic_cell_or_collection: make operator<< show cell content
2018-10-24 13:29:51 +03:00
gce_snitch_test.cc
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gossip_test.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
gossip.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
gossiping_property_file_snitch_test.cc
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hash_test.cc
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hint_test.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
idl_test.cc
tests: fix a typo in idl_test.cc
2018-06-15 09:56:45 +01:00
imr_test.cc
tests/imr: add test for exception safety in imr::utils::object::make()
2018-08-01 16:50:58 +01:00
index_reader_assertions.hh
tests: convert sprint() to format()
2018-11-01 13:16:17 +00:00
input_stream_test.cc
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json_cql_query_test.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
json_test.cc
tests: add JSON unit test
2018-07-25 13:16:06 +02:00
keys_test.cc
keys_test: add a test for nodetool_style string
2018-05-28 18:12:12 +03:00
limiting_data_source_test.cc
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loading_cache_test.cc
tests: loading_cache_test: configure a validity timeout in test_loading_cache_loading_different_keys to a greater value
2018-09-05 10:19:59 +03:00
log_heap_test.cc
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logalloc_test.cc
Merge seastar upstream
2018-10-25 12:53:30 +03:00
lsa_async_eviction_test.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
lsa_sync_eviction_test.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
make_random_string.hh
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managed_vector_test.cc
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map_difference_test.cc
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memory_footprint.cc
treewide: require type for creating atomic_cell
2018-05-31 15:51:11 +01:00
memtable_snapshot_source.hh
flat_mutation_reader: make timeout opt-out rather than opt-in
2018-09-20 11:31:24 +02:00
memtable_test.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
message.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
meta_test.cc
tests: introduce tests for metaprogramming helpers
2018-05-31 10:09:01 +01:00
multishard_mutation_query_test.cc
tests/multishard_mutation_query_test: test stateless query too
2018-12-04 08:51:05 +02:00
multishard_writer_test.cc
flat_mutation_reader: make timeout opt-out rather than opt-in
2018-09-20 11:31:24 +02:00
murmur_hash_test.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
mutation_assertions.hh
tests: convert sprint() to format()
2018-11-01 13:16:17 +00:00
mutation_diff
tests: mutation_diff: Ignore differences in memory addresses
2018-07-17 16:32:04 +03:00
mutation_fragment_test.cc
flat_mutation_reader: make timeout opt-out rather than opt-in
2018-09-20 11:31:24 +02:00
mutation_query_test.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
mutation_reader_test.cc
tests/mutation_reader_test: add test_multishard_combining_reader_next_partition
2018-12-04 08:51:05 +02:00
mutation_source_test.cc
Merge "Make sstable reader fail on unknown colum names in MC format" from Piotr
2018-12-05 10:43:29 +02:00
mutation_source_test.hh
mutation_source_test: add option to skip intra-partition fast-forwarding tests
2018-12-04 08:51:05 +02:00
mutation_test.cc
tests/mutation: add test for schema changes
2018-11-23 12:14:06 +00:00
mvcc_test.cc
tests: convert sprint() to format()
2018-11-01 13:16:17 +00:00
network_topology_strategy_test.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
nonwrapping_range_test.cc
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normalizing_reader.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
normalizing_reader.hh
Update seastar submodule
2018-11-21 00:01:44 +02:00
observable_test.cc
observable: allow an observable to disconnect() twice without penalty
2018-07-11 10:15:01 +01:00
partition_data_test.cc
tests: test imr representation of cells
2018-05-31 15:51:11 +01:00
partitioner_test.cc
tests: fix compilation of partitioner_test with boost 1.68 on IBM Z
2018-11-21 11:43:42 +02:00
perf_row_cache_update.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
querier_cache.cc
querier: fix evict_one() and evict_all_for_table()
2018-12-05 21:51:01 +02:00
query_processor_test.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
random-utils.hh
tests/random-utils: make functions and variables inline
2018-11-22 11:30:31 +00:00
range_assert.hh
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range_test.cc
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range_tombstone_list_assertions.hh
tests: convert sprint() to format()
2018-11-01 13:16:17 +00:00
range_tombstone_list_test.cc
tests: convert sprint() to format()
2018-11-01 13:16:17 +00:00
result_set_assertions.cc
tests: convert sprint() to format()
2018-11-01 13:16:17 +00:00
result_set_assertions.hh
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reusable_buffer_test.cc
tests/reusable_buffer: test fragmented_temporary_buffer support
2018-07-18 12:28:06 +01:00
role_manager_test.cc
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row_cache_alloc_stress.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
row_cache_stress_test.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
row_cache_test.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
row_locker_test.cc
db: add row locking metrics
2018-05-22 16:52:58 +02:00
schema_change_test.cc
cql3: schema_change_test: add test_multiple_columns_add_and_drop
2018-10-07 19:14:29 +03:00
schema_registry_test.cc
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secondary_index_test.cc
tests: convert sprint() to format()
2018-11-01 13:16:17 +00:00
serialized_action_test.cc
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simple_schema.hh
tests: convert sprint() to format()
2018-11-01 13:16:17 +00:00
snitch_reset_test.cc
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sstable_3_x_test.cc
Merge "Make sstable reader fail on unknown colum names in MC format" from Piotr
2018-12-05 10:43:29 +02:00
sstable_datafile_test.cc
tests: add example compaction strategy for sstable run based approach
2018-11-24 20:16:54 -02:00
sstable_mutation_test.cc
sstables: Enable test_schema_change for MC format
2018-11-26 13:25:23 +01:00
sstable_resharding_test.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
sstable_run_based_compaction_strategy_for_tests.hh
tests: add example compaction strategy for sstable run based approach
2018-11-24 20:16:54 -02:00
sstable_test.cc
Merge "Improve corrupt sstable reporting" from Rafael
2018-12-04 10:32:10 +02:00
sstable_test.hh
sstables/compaction: release space earlier of exhausted input sstables
2018-11-24 18:53:07 -02:00
sstable_utils.cc
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sstable_utils.hh
tests: Allow random_mutation_generator to generate mutations belong to remote shrard
2018-06-28 17:20:28 +08:00
storage_proxy_test.cc
tests: convert sprint() to format()
2018-11-01 13:16:17 +00:00
streaming_histogram_test.cc
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test_services.hh
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test-serialization.cc
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tmpdir.hh
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top_k_test.cc
remove exec permission from top_k source files
2018-11-21 18:38:50 +02:00
total_order_check.hh
tests: convert sprint() to format()
2018-11-01 13:16:17 +00:00
transport_test.cc
transport: switch to fragmented_temporary_buffer
2018-07-18 12:28:06 +01:00
types_test.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00
utf8_test.cc
utils: optimize UTF-8 validation
2018-12-05 21:51:01 +02:00
UUID_test.cc
tests/uuid: add more tests including make_randm_uuid()
2018-07-26 12:03:37 +01:00
view_build_test.cc
db/view/view_builder: Don't timeout waiting for view to be built
2018-11-15 19:41:43 +02:00
view_complex_test.cc
view_complex_test: fix another ttl
2018-11-15 18:03:28 +02:00
view_schema_test.cc
db/view/view_builder: Don't timeout waiting for view to be built
2018-11-15 19:41:43 +02:00
vint_serialization_test.cc
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virtual_reader_test.cc
Update seastar submodule
2018-11-21 00:01:44 +02:00