2024/08/20-08:14:22.304050 140500137354816 DEBG dcompact_worker.cpp:2211: /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-17944/att-00: fork to child time = 0.022981 sec 2024/08/20-08:14:22.305692 140500137354816 DEBG dcompact_worker.cpp:1011: Beg SerDeRead: /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-17944/att-00 2024/08/20-08:14:22.314073 140500137354816 DEBG dcompact_worker.cpp:1031: End SerDeRead: /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-17944/att-00 2024/08/20-08:14:22.316429 140500137354816 TRAC dcompact_worker.cpp:1081: INFO_LOG_LEVEL: rpc = INFO_LEVEL, env_var = undefined 2024/08/20-08:14:22.317031 140500137354816 [WARN] [column_family.cc:386] multiple cf_paths/db_paths and level_compaction_dynamic_level_bytes can't be used together 2024/08/20-08:14:22.357639 140500137354816 [version_set.cc:6139] Recovering from manifest file: /worker/dcompact-log/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/2024-08-20T02.42.00/.rocksdb/job-17944/att-00/MANIFEST-14629260 2024/08/20-08:14:22.412284 140500137354816 [version_set.cc:6182] Recovered from manifest file:/worker/dcompact-log/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/2024-08-20T02.42.00/.rocksdb/job-17944/att-00/MANIFEST-14629260 succeeded,manifest_file_number is 14629260, next_file_number is 14649698, last_sequence is 190240981589, log_number is 0,prev_log_number is 0,max_column_family is 0,min_log_number_to_keep is 14649613 2024/08/20-08:14:22.412296 140500137354816 [version_set.cc:6197] Column family [default] (ID 0), log number is 0 2024/08/20-08:14:22.412377 140500137354816 [version_set.cc:5652] Creating manifest 14649698 2024/08/20-08:14:22.441540 140500137354816 DEBG dcompact_worker.cpp:1215: /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-17944/att-00: bottommost_level: fake = 1, rpc = 0 2024/08/20-08:14:22.457287 140500137354816 [compaction_job.cc:2433] [default] [JOB 17944] Compacting 1@1 + 2@2 files to L2, score 0.94, subcompactions 1 : 1 2024/08/20-08:14:22.457315 140500137354816 [compaction_job.cc:2441] [default]: Compaction start summary: Base version 9214 Base level 1, inputs: [14649670(24MB)], [14649627(21MB) 14649628(5912KB)] 2024/08/20-08:14:22.667221 140500137354816 [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 2024/08/20-08:14:22.667257 140500137354816 [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 2024/08/20-08:14:22.667282 140500137354816 [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 2024/08/20-08:14:22.667297 140500137354816 [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 2024/08/20-08:14:22.667311 140500137354816 [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 2024/08/20-08:14:22.824696 140500137354816 [top_zip_table_builder.cc:934] ToplingZipTableBuilder(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-17944/att-00/14649699.sst) /dev/shm/ToplingTemp/Topling-257337-q6zt8M 2024/08/20-08:14:23.357603 140500137354816 [top_zip_table_builder.cc:1344] ToplingZipTableBuilder::Finish(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-17944/att-00/14649699.sst): first pass time = 0.53's, 125.942'MB/sec 2024/08/20-08:14:24.286958 140500137354816 [top_zip_table_builder.cc:2764] ToplingZipTableBuilder::Finish(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-17944/att-00/14649699.sst): old prealloc_size = 59686203, real_size = 20018000 2024/08/20-08:14:24.287308 140500137354816 [top_zip_table_builder.cc:1765] BuildReorderMap(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-17944/att-00/14649699.sst): index type = NestLoudsTrieDAWG_Mixed_XL_256_32_FL, store type = DictZipBlobStore usrkeys = 466031 prefix = 4 raw-key = 0.0075 GB zip-key = 0.0009 GB avg-key = 16.00 avg-zkey = 1.92 raw-val = 0.0541 GB zip-val = 0.0190 GB avg-val = 116.00 avg-zval = 40.79 2024/08/20-08:14:24.287741 140500137354816 [top_zip_table_builder.cc:1295] /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-17944/att-00/14649699.sst: sumWaitingMem = 0.001 GB, sumWorkingMem = 0.020 GB, reorder workingMem = 0.0011 GB, waited 0.000 sec, Key+Value = 0.067 GB 2024/08/20-08:14:24.755040 140500137354816 [top_zip_table_builder.cc:3092] ToplingZipTableBuilder::Finish(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-17944/att-00/14649699.sst): second pass time = 0.93's, 58.228'MB/sec, value only(80.6% of KV) wait indexing time = 0.00's, remap KeyValue time = 0.47's, 46.928'MB/sec (all stages of remap) Get OrderMap time = 0.00's, 2784.708'MB/sec (index lex order gen) rebuild zvType time = 0.36's, 0.322'MB/sec write SST data time = 0.11's, 208.328'MB/sec dict compress time = 4356233619.02's, 0.000'MB/sec z-dict build time = 0.00's, sample length = 0.543'MB, throughput = 12274.570'MB/sec zip my value time = 0.93's, unzip length = 0.054'GB zip my value throughput = 58.228'MB/sec zip pipeline throughput = 65.254'MB/sec entries = 466031 avg-key = 28.00 avg-zkey = 1.92 avg-val = 116.00 avg-zval = 40.79 usrkeys = 466031 avg-key = 20.00 avg-zkey = 1.92 avg-val = 123.00 avg-zval = 40.79 TagRS{ kinds = RS_Key0_Tag1 bytes = 0 } TagArray{ size = 466031 bytes = 1514608 } seq expand size = 3262217 multi value expand size = 0 cnt WriteAppend = 16 UnZipSize{ index = 0.0093 GB value = 0.0541 GB dict = 0.54 MB all = 0.0671 GB } __ZipSize{ index = 0.0009 GB value = 0.0190 GB dict = 0.54 MB all = 0.0220 GB } UnZip/Zip{ index = 10.4338 value = 2.8441 dict = 1.00 all = 3.0552 } Zip/UnZip{ index = 0.0958 value = 0.3516 dict = 1.00 all = 0.3273 } ---------------------------- total value len = 62.354072 GB avg = 0.180 KB (by entry num) total key len = 6.801807 GB avg = 0.020 KB total ukey len = 3.198828 GB avg = 0.008 KB total ukey num = 0.389799592 Billion total entry num = 0.346677600 Billion write speed all = 1.309186438 MB/sec (with seq num) write speed all = 1.256682949 MB/sec (without seq num) 2024/08/20-08:14:24.816017 140500137354816 [compaction_job.cc:1944] [default] [JOB 17944] Generated table #14649699: 466031 keys, 21965194 bytes, temperature: kWarm 2024/08/20-08:14:24.816109 140500137354816 EVENT_LOG_v1 {"time_micros": 1724112864816050, "cf_name": "default", "job": 17944, "event": "table_file_creation", "file_number": 14649699, "file_size": 21965194, "file_checksum": "", "file_checksum_func_name": "Unknown", "smallest_seqno": 190198852746, "largest_seqno": 190240744605, "table_properties": {"data_size": 19008000, "index_size": 893312, "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": 13048868, "raw_average_key_size": 28, "raw_value_size": 54060058, "raw_average_value_size": 116, "num_data_blocks": 1, "num_entries": 466031, "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": 1724112862, "oldest_key_time": 0, "file_creation_time": 1724112862, "slow_compression_estimated_data_size": 0, "fast_compression_estimated_data_size": 0, "db_id": "a007a635-5c0a-4b4a-be96-b9c695cb016b", "db_session_id": "90ZT1ZM5QNL093I8HHQG", "orig_file_number": 14649699, "seqno_to_time_mapping": "N/A", "__indexstats__": "[...1 records...]"}} 2024/08/20-08:14:24.870144 140500137354816 [top_zip_table_builder.cc:934] ToplingZipTableBuilder(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-17944/att-00/14649700.sst) /dev/shm/ToplingTemp/Topling-257337-LNur0Q 2024/08/20-08:14:25.357140 140500137354816 [top_zip_table_builder.cc:1344] ToplingZipTableBuilder::Finish(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-17944/att-00/14649700.sst): first pass time = 0.49's, 91.110'MB/sec 2024/08/20-08:14:26.092852 140500137354816 [top_zip_table_builder.cc:2764] ToplingZipTableBuilder::Finish(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-17944/att-00/14649700.sst): old prealloc_size = 59686203, real_size = 13098800 2024/08/20-08:14:26.093439 140500137354816 [top_zip_table_builder.cc:1765] BuildReorderMap(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-17944/att-00/14649700.sst): index type = NestLoudsTrieDAWG_Mixed_XL_256_32_FL, store type = DictZipBlobStore usrkeys = 308166 prefix = 4 raw-key = 0.0049 GB zip-key = 0.0006 GB avg-key = 16.00 avg-zkey = 1.92 raw-val = 0.0357 GB zip-val = 0.0124 GB avg-val = 115.97 avg-zval = 40.34 2024/08/20-08:14:26.093764 140500137354816 [top_zip_table_builder.cc:1295] /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-17944/att-00/14649700.sst: sumWaitingMem = 0.001 GB, sumWorkingMem = 0.020 GB, reorder workingMem = 0.0007 GB, waited 0.000 sec, Key+Value = 0.044 GB 2024/08/20-08:14:26.604068 140500137354816 [top_zip_table_builder.cc:3092] ToplingZipTableBuilder::Finish(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-17944/att-00/14649700.sst): second pass time = 0.73's, 48.645'MB/sec, value only(80.6% of KV) wait indexing time = 0.00's, remap KeyValue time = 0.51's, 28.074'MB/sec (all stages of remap) Get OrderMap time = 0.00's, 1045.929'MB/sec (index lex order gen) rebuild zvType time = 0.41's, 0.188'MB/sec write SST data time = 0.10's, 142.155'MB/sec dict compress time = 4356233619.02's, 0.000'MB/sec z-dict build time = 0.00's, sample length = 0.364'MB, throughput = 10182.500'MB/sec zip my value time = 0.73's, unzip length = 0.036'GB zip my value throughput = 48.645'MB/sec zip pipeline throughput = 52.747'MB/sec entries = 308166 avg-key = 28.00 avg-zkey = 1.92 avg-val = 115.97 avg-zval = 40.34 usrkeys = 308166 avg-key = 20.00 avg-zkey = 1.92 avg-val = 122.97 avg-zval = 40.34 TagRS{ kinds = RS_Key0_Tag1 bytes = 0 } TagArray{ size = 308166 bytes = 963040 } seq expand size = 2157162 multi value expand size = 0 cnt WriteAppend = 14 UnZipSize{ index = 0.0062 GB value = 0.0357 GB dict = 0.36 MB all = 0.0444 GB } __ZipSize{ index = 0.0006 GB value = 0.0124 GB dict = 0.36 MB all = 0.0144 GB } UnZip/Zip{ index = 10.4234 value = 2.8750 dict = 1.00 all = 3.0914 } Zip/UnZip{ index = 0.0959 value = 0.3478 dict = 1.00 all = 0.3235 } ---------------------------- total value len = 62.391966 GB avg = 0.180 KB (by entry num) total key len = 6.810435 GB avg = 0.020 KB total ukey len = 3.204991 GB avg = 0.008 KB total ukey num = 0.390107758 Billion total entry num = 0.346985766 Billion write speed all = 1.310021303 MB/sec (with seq num) write speed all = 1.257472983 MB/sec (without seq num) 2024/08/20-08:14:26.631371 140500137354816 [compaction_job.cc:1944] [default] [JOB 17944] Generated table #14649700: 308166 keys, 14351428 bytes, temperature: kWarm 2024/08/20-08:14:26.631456 140500137354816 EVENT_LOG_v1 {"time_micros": 1724112866631410, "cf_name": "default", "job": 17944, "event": "table_file_creation", "file_number": 14649700, "file_size": 14351428, "file_checksum": "", "file_checksum_func_name": "Unknown", "smallest_seqno": 190217943267, "largest_seqno": 190240742950, "table_properties": {"data_size": 12430304, "index_size": 591296, "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": 8628648, "raw_average_key_size": 28, "raw_value_size": 35737040, "raw_average_value_size": 115, "num_data_blocks": 1, "num_entries": 308166, "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": 1724112864, "oldest_key_time": 0, "file_creation_time": 1724112864, "slow_compression_estimated_data_size": 0, "fast_compression_estimated_data_size": 0, "db_id": "a007a635-5c0a-4b4a-be96-b9c695cb016b", "db_session_id": "90ZT1ZM5QNL093I8HHQG", "orig_file_number": 14649700, "seqno_to_time_mapping": "N/A", "__indexstats__": "[...1 records...]"}} 2024/08/20-08:14:26.648334 140500137354816 [compaction_job.cc:699] job-17944: subcompact[0], size: 0.036317 G, files: /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-17944/att-00 [14649699,14649700] 2024/08/20-08:14:26.677414 140500137354816 (Original Log Time 2024/08/20-08:14:22.457445) EVENT_LOG_v1 {"time_micros": 1724112862457339, "job": 17944, "event": "compaction_started", "compaction_reason": "FilesMarkedForCompaction", "files_L1": [14649670], "files_L2": [14649627, 14649628], "score": 0.937368, "input_data_size": 54260185, "oldest_snapshot_seqno": 190240981215} 2024/08/20-08:14:26.677418 140500137354816 (Original Log Time 2024/08/20-08:14:26.676658) [compaction_job.cc:2018] [default] [JOB 17944] Compacted 1@1 + 2@2 files to L2 => 36316622 bytes 2024/08/20-08:14:26.677421 140500137354816 (Original Log Time 2024/08/20-08:14:26.677329) [compaction_job.cc:1220] [default] compacted to: files[0 0 2 0 0 0 0] max score 0.01, MB/sec: 12.9 rd, 8.7 wr, level 2, files in(1, 2) out(2 +0 blob) MB in(24.9, 26.8 +0.0 blob) out(34.6 +0.0 blob), read-write-amplify(3.5) write-amplify(1.4) OK, records in: 774197, records dropped: 0 output_compression: Snappy 2024/08/20-08:14:26.677431 140500137354816 (Original Log Time 2024/08/20-08:14:26.677387) EVENT_LOG_v1 {"time_micros": 1724112866677361, "cf": "default", "job": 17944, "event": "compaction_finished", "compaction_time_micros": 4190905, "compaction_time_cpu_micros": 1649170, "output_level": 2, "num_output_files": 2, "total_output_size": 36316622, "num_input_records": 774197, "num_output_records": 774197, "num_subcompactions": 1, "output_compression": "Snappy", "num_single_delete_mismatches": 0, "num_single_delete_fallthrough": 0, "file_write_nanos": 29631624, "file_range_sync_nanos": 0, "file_fsync_nanos": 2180, "file_prepare_write_nanos": 7282, "lsm_state": [0, 0, 2, 0, 0, 0, 0]} 2024/08/20-08:14:26.841057 140500137354816 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":1724092920,"starts":1724112862,"executesMs":4367,"compactionJobId":17944,"attempt":0,"compactionInputRawBytes":111474614,"compactionInputZipBytes":54260185,"compactionOutputRawBytes":0,"compactionOutputZipBytes":36316622,"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":"00-4ccd7784154ebeb9c895c06ac9c71729-cec1d7acdc94f938-00"}}, response = 2024/08/20-08:14:26.841176 140500137354816 INFO dcompact_worker.cpp:1456: finish /worker/dcompact-log/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/2024-08-20T02.42.00/.rocksdb/job-17944/att-00: olev 2, work 4.367 s, result 5.028 ms, install 0.804 ms, input{raw 106.310 MiB zip 51.747 MiB}