2024/08/20-00:23:29.243899 140500187711040 DEBG dcompact_worker.cpp:2211: /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-01977/att-00: fork to child time = 0.011232 sec 2024/08/20-00:23:29.244730 140500187711040 DEBG dcompact_worker.cpp:1011: Beg SerDeRead: /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-01977/att-00 2024/08/20-00:23:29.249666 140500187711040 DEBG dcompact_worker.cpp:1031: End SerDeRead: /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-01977/att-00 2024/08/20-00:23:29.251087 140500187711040 TRAC dcompact_worker.cpp:1081: INFO_LOG_LEVEL: rpc = INFO_LEVEL, env_var = undefined 2024/08/20-00:23:29.251400 140500187711040 [WARN] [column_family.cc:386] multiple cf_paths/db_paths and level_compaction_dynamic_level_bytes can't be used together 2024/08/20-00:23:29.349056 140500187711040 [version_set.cc:6139] Recovering from manifest file: /worker/dcompact-log/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/2024-08-19T23.41.30/.rocksdb/job-01977/att-00/MANIFEST-14619535 2024/08/20-00:23:29.398737 140500187711040 [version_set.cc:6182] Recovered from manifest file:/worker/dcompact-log/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/2024-08-19T23.41.30/.rocksdb/job-01977/att-00/MANIFEST-14619535 succeeded,manifest_file_number is 14619535, next_file_number is 14621745, last_sequence is 189628937077, log_number is 0,prev_log_number is 0,max_column_family is 0,min_log_number_to_keep is 14621667 2024/08/20-00:23:29.398749 140500187711040 [version_set.cc:6197] Column family [default] (ID 0), log number is 0 2024/08/20-00:23:29.398836 140500187711040 [version_set.cc:5652] Creating manifest 14621745 2024/08/20-00:23:29.425314 140500187711040 DEBG dcompact_worker.cpp:1215: /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-01977/att-00: bottommost_level: fake = 1, rpc = 0 2024/08/20-00:23:29.441226 140500187711040 [compaction_job.cc:2433] [default] [JOB 1977] Compacting 1@1 + 2@2 files to L2, score 1.00, subcompactions 1 : 1 2024/08/20-00:23:29.441239 140500187711040 [compaction_job.cc:2441] [default]: Compaction start summary: Base version 1019 Base level 1, inputs: [14621700(27MB)], [14621742(20MB) 14621743(8121KB)] 2024/08/20-00:23:29.638473 140500187711040 [top_zip_table.cc:59] core git_version_hash_info_is:commit 7517bad5c1a147474c3830831b9a22c996321ae8 Author: leipeng Date: 2024-01-08 19:18:17 +0800 vfork_cmd: call close before wait_finish g++ (GCC) 12.1.0 Copyright (C) 2022 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. INCS = -Isrc -I3rdparty/re2 -I3rdparty/zstd -Iboost-include CXXFLAGS = -D TOPLING_IO_WITH_URING=1 -fPIC -time -Wno-class-memaccess -fdiagnostics-color -Wformat=2 -Wcomment -Wall -Wextra -Wno-unused-parameter -Wno-alloc-size-larger-than -mcx16 -Wno-deprecated-declarations -Wstrict-aliasing=3 -DCLIENT_LICENSE_ID="public" -DNO_THREADS -ftls-model=initial-exec -DDIVSUFSORT_API= -fno-stack-protector RLS_FLAGS = -O3 -DNDEBUG -g3 WITH_BMI2 = 1 compile_cpu_flag: -march=haswell -mbmi -mbmi2 2024/08/20-00:23:29.638511 140500187711040 [top_zip_table.cc:60] fsa git_version_hash_info_is:commit 7517bad5c1a147474c3830831b9a22c996321ae8 Author: leipeng Date: 2024-01-08 19:18:17 +0800 vfork_cmd: call close before wait_finish g++ (GCC) 12.1.0 Copyright (C) 2022 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. INCS = -Isrc -I3rdparty/re2 -I3rdparty/zstd -Iboost-include CXXFLAGS = -D TOPLING_IO_WITH_URING=1 -fPIC -time -Wno-class-memaccess -fdiagnostics-color -Wformat=2 -Wcomment -Wall -Wextra -Wno-unused-parameter -Wno-alloc-size-larger-than -mcx16 -Wno-deprecated-declarations -Wstrict-aliasing=3 -DCLIENT_LICENSE_ID="public" -DNO_THREADS -ftls-model=initial-exec -DDIVSUFSORT_API= -fno-stack-protector RLS_FLAGS = -O3 -DNDEBUG -g3 WITH_BMI2 = 1 compile_cpu_flag: -march=haswell -mbmi -mbmi2 2024/08/20-00:23:29.638539 140500187711040 [top_zip_table.cc:61] zbs git_version_hash_info_is:commit 7517bad5c1a147474c3830831b9a22c996321ae8 Author: leipeng Date: 2024-01-08 19:18:17 +0800 vfork_cmd: call close before wait_finish g++ (GCC) 12.1.0 Copyright (C) 2022 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. INCS = -Isrc -I3rdparty/re2 -I3rdparty/zstd -Iboost-include CXXFLAGS = -D TOPLING_IO_WITH_URING=1 -fPIC -time -Wno-class-memaccess -fdiagnostics-color -Wformat=2 -Wcomment -Wall -Wextra -Wno-unused-parameter -Wno-alloc-size-larger-than -mcx16 -Wno-deprecated-declarations -Wstrict-aliasing=3 -DCLIENT_LICENSE_ID="public" -DNO_THREADS -ftls-model=initial-exec -DDIVSUFSORT_API= -fno-stack-protector RLS_FLAGS = -O3 -DNDEBUG -g3 WITH_BMI2 = 1 compile_cpu_flag: -march=haswell -mbmi -mbmi2 2024/08/20-00:23:29.638554 140500187711040 [top_zip_table.cc:62] topling-zip_table_reader: git_version_hash_info_is: commit 7f80399bfbd2071b6e0f5683e8ab7225b8e6e394 Author: leipeng Date: 2024-01-19 14:52:30 +0800 Change ToplingZipTableOptions::sampleRatio to vector g++ (GCC) 12.1.0 Copyright (C) 2022 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. cpu_flag: -march=native -mbmi -mbmi2 2024/08/20-00:23:29.638564 140500187711040 [top_zip_table.cc:64] topling-rocks git_version_hash_info_is: commit 1240987ca13d0fe562c9b9c037155079f0877840 Author: leipeng Date: 2024-01-19 15:07:04 +0800 Change ToplingZipTableOptions::sampleRatio to vector g++ (GCC) 12.1.0 Copyright (C) 2022 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. cpu_flag: -march=native -mbmi -mbmi2 2024/08/20-00:23:29.791289 140500187711040 [top_zip_table_builder.cc:934] ToplingZipTableBuilder(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-01977/att-00/14621746.sst) /dev/shm/ToplingTemp/Topling-75414-x0XrMD 2024/08/20-00:23:30.152702 140500187711040 [top_zip_table_builder.cc:1344] ToplingZipTableBuilder::Finish(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-01977/att-00/14621746.sst): first pass time = 0.36's, 185.711'MB/sec 2024/08/20-00:23:31.173376 140500187711040 [top_zip_table_builder.cc:2764] ToplingZipTableBuilder::Finish(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-01977/att-00/14621746.sst): old prealloc_size = 64942067, real_size = 19683232 2024/08/20-00:23:31.173728 140500187711040 [top_zip_table_builder.cc:1765] BuildReorderMap(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-01977/att-00/14621746.sst): index type = NestLoudsTrieDAWG_Mixed_XL_256_32_FL, store type = DictZipBlobStore usrkeys = 465493 prefix = 4 raw-key = 0.0074 GB zip-key = 0.0009 GB avg-key = 16.00 avg-zkey = 1.90 raw-val = 0.0541 GB zip-val = 0.0187 GB avg-val = 116.17 avg-zval = 40.13 2024/08/20-00:23:31.174180 140500187711040 [top_zip_table_builder.cc:1295] /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-01977/att-00/14621746.sst: sumWaitingMem = 0.001 GB, sumWorkingMem = 0.020 GB, reorder workingMem = 0.0011 GB, waited 0.000 sec, Key+Value = 0.067 GB 2024/08/20-00:23:31.537316 140500187711040 [top_zip_table_builder.cc:3092] ToplingZipTableBuilder::Finish(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-01977/att-00/14621746.sst): second pass time = 1.02's, 53.030'MB/sec, value only(80.6% of KV) wait indexing time = 0.00's, remap KeyValue time = 0.36's, 59.269'MB/sec (all stages of remap) Get OrderMap time = 0.00's, 2688.795'MB/sec (index lex order gen) rebuild zvType time = 0.29's, 0.398'MB/sec write SST data time = 0.07's, 302.193'MB/sec dict compress time = 4356233619.02's, 0.000'MB/sec z-dict build time = 0.00's, sample length = 0.544'MB, throughput = 370.769'MB/sec zip my value time = 1.02's, unzip length = 0.054'GB zip my value throughput = 53.030'MB/sec zip pipeline throughput = 153.859'MB/sec entries = 465493 avg-key = 28.00 avg-zkey = 1.90 avg-val = 116.17 avg-zval = 40.13 usrkeys = 465493 avg-key = 20.00 avg-zkey = 1.90 avg-val = 123.17 avg-zval = 40.13 TagRS{ kinds = RS_Key0_Tag1 bytes = 0 } TagArray{ size = 465493 bytes = 1454688 } seq expand size = 3258451 multi value expand size = 0 cnt WriteAppend = 12 UnZipSize{ index = 0.0093 GB value = 0.0541 GB dict = 0.54 MB all = 0.0671 GB } __ZipSize{ index = 0.0009 GB value = 0.0187 GB dict = 0.54 MB all = 0.0216 GB } UnZip/Zip{ index = 10.5015 value = 2.8948 dict = 1.00 all = 3.1111 } Zip/UnZip{ index = 0.0952 value = 0.3454 dict = 1.00 all = 0.3214 } ---------------------------- total value len = 62.354083 GB avg = 0.180 KB (by entry num) total key len = 6.801791 GB avg = 0.020 KB total ukey len = 3.198817 GB avg = 0.008 KB total ukey num = 0.389799054 Billion total entry num = 0.346677062 Billion write speed all = 2.814608564 MB/sec (with seq num) write speed all = 2.701731938 MB/sec (without seq num) 2024/08/20-00:23:31.580282 140500187711040 [compaction_job.cc:1944] [default] [JOB 1977] Generated table #14621746: 465493 keys, 21570676 bytes, temperature: kWarm 2024/08/20-00:23:31.580369 140500187711040 EVENT_LOG_v1 {"time_micros": 1724084611580321, "cf_name": "default", "job": 1977, "event": "table_file_creation", "file_number": 14621746, "file_size": 21570676, "file_checksum": "", "file_checksum_func_name": "Unknown", "smallest_seqno": 189607987282, "largest_seqno": 189628652636, "table_properties": {"data_size": 18680144, "index_size": 886528, "index_partitions": 0, "top_level_index_size": 0, "index_key_is_user_key": 0, "index_value_is_delta_encoded": 0, "filter_size": 0, "raw_key_size": 13033804, "raw_average_key_size": 28, "raw_value_size": 54075186, "raw_average_value_size": 116, "num_data_blocks": 1, "num_entries": 465493, "num_filter_entries": 0, "num_deletions": 0, "num_merge_operands": 0, "num_range_deletions": 0, "format_version": 0, "fixed_key_len": 28, "fixed_value_len": 18446744073709551615, "filter_policy": "", "column_family_name": "default", "column_family_id": 0, "comparator": "leveldb.BytewiseComparator", "merge_operator": "nullptr", "prefix_extractor_name": "nullptr", "property_collectors": "[Rdb_tbl_prop_coll_factory]", "compression": "FlatZip", "compression_options": "RS_Key0_Tag1-NestLoudsTrieDAWG_Mixed_XL_256_32_FL-DictZipBlobStore", "creation_time": 1724084609, "oldest_key_time": 0, "file_creation_time": 1724084609, "slow_compression_estimated_data_size": 0, "fast_compression_estimated_data_size": 0, "db_id": "a007a635-5c0a-4b4a-be96-b9c695cb016b", "db_session_id": "9474K4QZ2QA6TIYF9LEW", "orig_file_number": 14621746, "seqno_to_time_mapping": "N/A", "__indexstats__": "[...1 records...]"}} 2024/08/20-00:23:31.606030 140500187711040 [top_zip_table_builder.cc:934] ToplingZipTableBuilder(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-01977/att-00/14621747.sst) /dev/shm/ToplingTemp/Topling-75414-MzGT0F 2024/08/20-00:23:31.833776 140500187711040 [top_zip_table_builder.cc:1344] ToplingZipTableBuilder::Finish(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-01977/att-00/14621747.sst): first pass time = 0.23's, 219.572'MB/sec 2024/08/20-00:23:32.377214 140500187711040 [top_zip_table_builder.cc:2764] ToplingZipTableBuilder::Finish(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-01977/att-00/14621747.sst): old prealloc_size = 64942067, real_size = 15081888 2024/08/20-00:23:32.377519 140500187711040 [top_zip_table_builder.cc:1765] BuildReorderMap(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-01977/att-00/14621747.sst): index type = NestLoudsTrieDAWG_Mixed_XL_256_32_FL, store type = DictZipBlobStore usrkeys = 347280 prefix = 4 raw-key = 0.0056 GB zip-key = 0.0007 GB avg-key = 16.00 avg-zkey = 1.92 raw-val = 0.0403 GB zip-val = 0.0143 GB avg-val = 115.97 avg-zval = 41.26 2024/08/20-00:23:32.377861 140500187711040 [top_zip_table_builder.cc:1295] /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-01977/att-00/14621747.sst: sumWaitingMem = 0.001 GB, sumWorkingMem = 0.020 GB, reorder workingMem = 0.0008 GB, waited 0.000 sec, Key+Value = 0.050 GB 2024/08/20-00:23:32.720661 140500187711040 [top_zip_table_builder.cc:3092] ToplingZipTableBuilder::Finish(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-01977/att-00/14621747.sst): second pass time = 0.54's, 74.233'MB/sec, value only(80.6% of KV) wait indexing time = 0.00's, remap KeyValue time = 0.34's, 48.280'MB/sec (all stages of remap) Get OrderMap time = 0.00's, 2403.889'MB/sec (index lex order gen) rebuild zvType time = 0.28's, 0.305'MB/sec write SST data time = 0.06's, 284.378'MB/sec dict compress time = 4356233619.02's, 0.000'MB/sec z-dict build time = 0.00's, sample length = 0.410'MB, throughput = 12630.216'MB/sec zip my value time = 0.54's, unzip length = 0.040'GB zip my value throughput = 74.233'MB/sec zip pipeline throughput = 74.233'MB/sec entries = 347280 avg-key = 28.00 avg-zkey = 1.92 avg-val = 115.97 avg-zval = 41.26 usrkeys = 347280 avg-key = 20.00 avg-zkey = 1.92 avg-val = 122.97 avg-zval = 41.26 TagRS{ kinds = RS_Key0_Tag1 bytes = 0 } TagArray{ size = 347280 bytes = 1172080 } seq expand size = 2430960 multi value expand size = 0 cnt WriteAppend = 15 UnZipSize{ index = 0.0069 GB value = 0.0403 GB dict = 0.41 MB all = 0.0500 GB } __ZipSize{ index = 0.0007 GB value = 0.0143 GB dict = 0.41 MB all = 0.0166 GB } UnZip/Zip{ index = 10.4281 value = 2.8107 dict = 1.00 all = 3.0153 } Zip/UnZip{ index = 0.0959 value = 0.3558 dict = 1.00 all = 0.3316 } ---------------------------- total value len = 62.396789 GB avg = 0.180 KB (by entry num) total key len = 6.811515 GB avg = 0.020 KB total ukey len = 3.205763 GB avg = 0.008 KB total ukey num = 0.390146334 Billion total entry num = 0.347024342 Billion write speed all = 2.816606753 MB/sec (with seq num) write speed all = 2.703622496 MB/sec (without seq num) 2024/08/20-00:23:32.743522 140500187711040 [compaction_job.cc:1944] [default] [JOB 1977] Generated table #14621747: 347280 keys, 16581592 bytes, temperature: kWarm 2024/08/20-00:23:32.743594 140500187711040 EVENT_LOG_v1 {"time_micros": 1724084612743556, "cf_name": "default", "job": 1977, "event": "table_file_creation", "file_number": 14621747, "file_size": 16581592, "file_checksum": "", "file_checksum_func_name": "Unknown", "smallest_seqno": 189557203156, "largest_seqno": 189628652461, "table_properties": {"data_size": 14328848, "index_size": 666048, "index_partitions": 0, "top_level_index_size": 0, "index_key_is_user_key": 0, "index_value_is_delta_encoded": 0, "filter_size": 0, "raw_key_size": 9723840, "raw_average_key_size": 28, "raw_value_size": 40274404, "raw_average_value_size": 115, "num_data_blocks": 1, "num_entries": 347280, "num_filter_entries": 0, "num_deletions": 0, "num_merge_operands": 0, "num_range_deletions": 0, "format_version": 0, "fixed_key_len": 28, "fixed_value_len": 18446744073709551615, "filter_policy": "", "column_family_name": "default", "column_family_id": 0, "comparator": "leveldb.BytewiseComparator", "merge_operator": "nullptr", "prefix_extractor_name": "nullptr", "property_collectors": "[Rdb_tbl_prop_coll_factory]", "compression": "FlatZip", "compression_options": "RS_Key0_Tag1-NestLoudsTrieDAWG_Mixed_XL_256_32_FL-DictZipBlobStore", "creation_time": 1724084611, "oldest_key_time": 0, "file_creation_time": 1724084611, "slow_compression_estimated_data_size": 0, "fast_compression_estimated_data_size": 0, "db_id": "a007a635-5c0a-4b4a-be96-b9c695cb016b", "db_session_id": "9474K4QZ2QA6TIYF9LEW", "orig_file_number": 14621747, "seqno_to_time_mapping": "N/A", "__indexstats__": "[...1 records...]"}} 2024/08/20-00:23:32.764634 140500187711040 [compaction_job.cc:699] job-01977: subcompact[0], size: 0.038152 G, files: /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-01977/att-00 [14621746,14621747] 2024/08/20-00:23:32.778746 140500187711040 (Original Log Time 2024/08/20-00:23:29.441292) EVENT_LOG_v1 {"time_micros": 1724084609441252, "job": 1977, "event": "compaction_started", "compaction_reason": "FilesMarkedForCompaction", "files_L1": [14621700], "files_L2": [14621742, 14621743], "score": 0.996331, "input_data_size": 59038243, "oldest_snapshot_seqno": 189628935940} 2024/08/20-00:23:32.778749 140500187711040 (Original Log Time 2024/08/20-00:23:32.778387) [compaction_job.cc:2018] [default] [JOB 1977] Compacted 1@1 + 2@2 files to L2 => 38152268 bytes 2024/08/20-00:23:32.778750 140500187711040 (Original Log Time 2024/08/20-00:23:32.778662) [compaction_job.cc:1220] [default] compacted to: files[0 0 2 0 0 0 0] max score 0.01, MB/sec: 17.8 rd, 11.5 wr, level 2, files in(1, 2) out(2 +0 blob) MB in(27.6, 28.7 +0.0 blob) out(36.4 +0.0 blob), read-write-amplify(3.4) write-amplify(1.3) OK, records in: 841002, records dropped: 28229 output_compression: Snappy 2024/08/20-00:23:32.778758 140500187711040 (Original Log Time 2024/08/20-00:23:32.778728) EVENT_LOG_v1 {"time_micros": 1724084612778686, "cf": "default", "job": 1977, "event": "compaction_finished", "compaction_time_micros": 3323353, "compaction_time_cpu_micros": 1253277, "output_level": 2, "num_output_files": 2, "total_output_size": 38152268, "num_input_records": 841002, "num_output_records": 812773, "num_subcompactions": 1, "output_compression": "Snappy", "num_single_delete_mismatches": 0, "num_single_delete_fallthrough": 0, "file_write_nanos": 25095965, "file_range_sync_nanos": 0, "file_fsync_nanos": 1195, "file_prepare_write_nanos": 4650, "lsm_state": [0, 0, 2, 0, 0, 0, 0]} 2024/08/20-00:23:32.926625 140500187711040 DEBG dcompact_worker.cpp:240: HttpPost: 200 OK: url = http://nlb-7zny4kaa1poal01o64.cn-shenzhen.nlb.aliyuncs.com:8443, body = {"instanceId":"nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137","labourId":"","dbId":"a007a635-5c0a-4b4a-be96-b9c695cb016b","dbStarts":1724082090,"starts":1724084609,"executesMs":3529,"compactionJobId":1977,"attempt":0,"compactionInputRawBytes":121115752,"compactionInputZipBytes":59038243,"compactionOutputRawBytes":0,"compactionOutputZipBytes":38152268,"headers":{"Accept":"*/*","Connection":"close","Host":"aliyun-topling-saas.topling.cn:18443","RemoteIp":"120.24.192.169","X-Forwarded-For":"120.24.192.169","region":"cn-shenzhen","token":"e6474c481bd4415abc537135cc03626b","instance-token":"e6474c481bd4415abc537135cc03626b","provider":"aliyun","CloudMarketInstanceId":"si-59c0ae5c955845588903","MeteringAssit":"","Transfer-Encoding":"chunked","traceparent":"00-6fdea70716ae0fa7cc97486e28c487f6-16ce096b276527bc-00"}}, response = 2024/08/20-00:23:32.926722 140500187711040 INFO dcompact_worker.cpp:1456: finish /worker/dcompact-log/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/2024-08-19T23.41.30/.rocksdb/job-01977/att-00: olev 2, work 3.529 s, result 4.687 ms, install 0.403 ms, input{raw 115.505 MiB zip 56.303 MiB}