2024/08/20-16:49:18.243563 140500229674560 DEBG dcompact_worker.cpp:2211: /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-40302/att-00: fork to child time = 0.010366 sec 2024/08/20-16:49:18.244444 140500229674560 DEBG dcompact_worker.cpp:1011: Beg SerDeRead: /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-40302/att-00 2024/08/20-16:49:18.249896 140500229674560 DEBG dcompact_worker.cpp:1031: End SerDeRead: /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-40302/att-00 2024/08/20-16:49:18.250204 140500229674560 TRAC dcompact_worker.cpp:1081: INFO_LOG_LEVEL: rpc = INFO_LEVEL, env_var = undefined 2024/08/20-16:49:18.250747 140500229674560 [WARN] [column_family.cc:386] multiple cf_paths/db_paths and level_compaction_dynamic_level_bytes can't be used together 2024/08/20-16:49:18.296356 140500229674560 [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-40302/att-00/MANIFEST-14629260 2024/08/20-16:49:18.323189 140500229674560 [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-40302/att-00/MANIFEST-14629260 succeeded,manifest_file_number is 14629260, next_file_number is 14675626, last_sequence is 190803429988, log_number is 0,prev_log_number is 0,max_column_family is 0,min_log_number_to_keep is 14675498 2024/08/20-16:49:18.323196 140500229674560 [version_set.cc:6197] Column family [default] (ID 0), log number is 0 2024/08/20-16:49:18.323253 140500229674560 [version_set.cc:5652] Creating manifest 14675626 2024/08/20-16:49:18.362758 140500229674560 DEBG dcompact_worker.cpp:1215: /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-40302/att-00: bottommost_level: fake = 1, rpc = 0 2024/08/20-16:49:18.382583 140500229674560 [compaction_job.cc:2433] [default] [JOB 40302] Compacting 1@3 + 2@4 files to L4, score 1.00, subcompactions 1 : 1 2024/08/20-16:49:18.382593 140500229674560 [compaction_job.cc:2441] [default]: Compaction start summary: Base version 20548 Base level 3, inputs: [14675541(18MB)], [14670846(51MB) 14670847(37MB)] 2024/08/20-16:49:18.387972 140500229674560 [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 2024/08/20-16:49:18.388025 140500229674560 [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 2024/08/20-16:49:18.388055 140500229674560 [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 2024/08/20-16:49:18.388068 140500229674560 [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 2024/08/20-16:49:18.388077 140500229674560 [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 2024/08/20-16:49:18.881955 140500229674560 [top_zip_table_builder.cc:934] ToplingZipTableBuilder(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-40302/att-00/14675627.sst) /dev/shm/ToplingTemp/Topling-429989-LzPVPX 2024/08/20-16:49:24.396710 140500229674560 [top_zip_table_builder.cc:1344] ToplingZipTableBuilder::Finish(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-40302/att-00/14675627.sst): first pass time = 5.51's, 48.676'MB/sec 2024/08/20-16:49:26.227193 140500229674560 [top_zip_table_builder.cc:2764] ToplingZipTableBuilder::Finish(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-40302/att-00/14675627.sst): old prealloc_size = 122856685, real_size = 18870944 2024/08/20-16:49:26.232949 140500229674560 [top_zip_table_builder.cc:1765] BuildReorderMap(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-40302/att-00/14675627.sst): index type = NestLoudsTrieDAWG_Mixed_XL_256_32_FL, store type = ZeroLengthBlobStore usrkeys = 9557532 prefix = 4 raw-key = 0.1537 GB zip-key = 0.0165 GB avg-key = 16.09 avg-zkey = 1.72 raw-val = 0.0000 GB zip-val = 0.0000 GB avg-val = 0.00 avg-zval = 0.00 2024/08/20-16:49:26.279835 140500229674560 [top_zip_table_builder.cc:1295] /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-40302/att-00/14675627.sst: sumWaitingMem = 0.029 GB, sumWorkingMem = 0.020 GB, reorder workingMem = 0.0287 GB, waited 0.000 sec, Key+Value = 0.268 GB 2024/08/20-16:49:28.022534 140500229674560 [top_zip_table_builder.cc:3092] ToplingZipTableBuilder::Finish(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-40302/att-00/14675627.sst): second pass time = 0.00's, 0.000'MB/sec, value only( 0.0% of KV) wait indexing time = 1.83's, remap KeyValue time = 1.80's, 30.475'MB/sec (all stages of remap) Get OrderMap time = 0.01's, 2865.200'MB/sec (index lex order gen) rebuild zvType time = 0.03's, 75.396'MB/sec write SST data time = 1.76's, 31.124'MB/sec dict compress time = 0.00's, 0.000'MB/sec z-dict build time = 0.00's, sample length = 0.000'MB, throughput = -nan'MB/sec zip my value time = 0.00's, unzip length = 0.000'GB zip my value throughput = 0.000'MB/sec zip pipeline throughput = 0.000'MB/sec entries = 9557532 avg-key = 28.09 avg-zkey = 1.72 avg-val = 0.00 avg-zval = 0.00 usrkeys = 9557532 avg-key = 20.09 avg-zkey = 1.72 avg-val = 7.35 avg-zval = 0.00 TagRS{ kinds = RS_Key0_Tag1 bytes = 0 } TagArray{ size = 9557532 bytes = 38230144 } seq expand size = 67576033 multi value expand size = 2693236 cnt WriteAppend = 7 UnZipSize{ index = 0.1920 GB value = 0.0000 GB dict = 0.00 MB all = 0.2684 GB } __ZipSize{ index = 0.0165 GB value = 0.0000 GB dict = 0.00 MB all = 0.0547 GB } UnZip/Zip{ index = 11.6481 value = 0.0000 dict = 0.00 all = 4.9063 } Zip/UnZip{ index = 0.0859 value = inf dict = 0.00 all = 0.2038 } ---------------------------- total value len = 62.367019 GB avg = 0.175 KB (by entry num) total key len = 7.057193 GB avg = 0.020 KB total ukey len = 3.381483 GB avg = 0.008 KB total ukey num = 0.398891093 Billion total entry num = 0.355769101 Billion write speed all = 0.829175312 MB/sec (with seq num) write speed all = 0.795181990 MB/sec (without seq num) 2024/08/20-16:49:28.083394 140500229674560 [compaction_job.cc:1944] [default] [JOB 40302] Generated table #14675627: 9557532 keys, 54712798 bytes, temperature: kWarm 2024/08/20-16:49:28.083482 140500229674560 EVENT_LOG_v1 {"time_micros": 1724143768083432, "cf_name": "default", "job": 40302, "event": "table_file_creation", "file_number": 14675627, "file_size": 54712798, "file_checksum": "", "file_checksum_func_name": "Unknown", "smallest_seqno": 189650398340, "largest_seqno": 190802648006, "table_properties": {"data_size": 80, "index_size": 16481280, "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": 268435484, "raw_average_key_size": 28, "raw_value_size": 0, "raw_average_value_size": 0, "num_data_blocks": 1, "num_entries": 9557532, "num_filter_entries": 0, "num_deletions": 673309, "num_merge_operands": 0, "num_range_deletions": 0, "format_version": 0, "fixed_key_len": 0, "fixed_value_len": 0, "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-ZeroLengthBlobStore", "creation_time": 1724143758, "oldest_key_time": 0, "file_creation_time": 1724143758, "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": 14675627, "seqno_to_time_mapping": "N/A", "__indexstats__": "[...1 records...]"}} 2024/08/20-16:49:28.134010 140500229674560 [top_zip_table_builder.cc:934] ToplingZipTableBuilder(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-40302/att-00/14675628.sst) /dev/shm/ToplingTemp/Topling-429989-T9qAtW 2024/08/20-16:49:32.622219 140500229674560 [top_zip_table_builder.cc:1344] ToplingZipTableBuilder::Finish(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-40302/att-00/14675628.sst): first pass time = 4.49's, 52.700'MB/sec 2024/08/20-16:49:33.672615 140500229674560 [top_zip_table_builder.cc:2764] ToplingZipTableBuilder::Finish(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-40302/att-00/14675628.sst): old prealloc_size = 122856685, real_size = 16666656 2024/08/20-16:49:33.677214 140500229674560 [top_zip_table_builder.cc:1765] BuildReorderMap(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-40302/att-00/14675628.sst): index type = NestLoudsTrieDAWG_Mixed_XL_256_32_FL, store type = ZeroLengthBlobStore usrkeys = 8447546 prefix = 4 raw-key = 0.1352 GB zip-key = 0.0146 GB avg-key = 16.00 avg-zkey = 1.72 raw-val = 0.0000 GB zip-val = 0.0000 GB avg-val = 0.00 avg-zval = 0.00 2024/08/20-16:49:33.711412 140500229674560 [top_zip_table_builder.cc:1295] /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-40302/att-00/14675628.sst: sumWaitingMem = 0.025 GB, sumWorkingMem = 0.020 GB, reorder workingMem = 0.0253 GB, waited 0.000 sec, Key+Value = 0.237 GB 2024/08/20-16:49:34.691873 140500229674560 [top_zip_table_builder.cc:3092] ToplingZipTableBuilder::Finish(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-40302/att-00/14675628.sst): second pass time = 0.00's, 0.000'MB/sec, value only( 0.0% of KV) wait indexing time = 1.05's, remap KeyValue time = 1.02's, 47.432'MB/sec (all stages of remap) Get OrderMap time = 0.00's, 3185.684'MB/sec (index lex order gen) rebuild zvType time = 0.03's, 75.491'MB/sec write SST data time = 0.99's, 48.997'MB/sec dict compress time = 0.00's, 0.000'MB/sec z-dict build time = 0.00's, sample length = 0.000'MB, throughput = -nan'MB/sec zip my value time = 0.00's, unzip length = 0.000'GB zip my value throughput = 0.000'MB/sec zip pipeline throughput = 0.000'MB/sec entries = 8447546 avg-key = 28.00 avg-zkey = 1.72 avg-val = 0.00 avg-zval = 0.00 usrkeys = 8447546 avg-key = 20.00 avg-zkey = 1.72 avg-val = 7.42 avg-zval = 0.00 TagRS{ kinds = RS_Key0_Tag1 bytes = 0 } TagArray{ size = 8447546 bytes = 33790192 } seq expand size = 59835287 multi value expand size = 2809860 cnt WriteAppend = 7 UnZipSize{ index = 0.1689 GB value = 0.0000 GB dict = 0.00 MB all = 0.2365 GB } __ZipSize{ index = 0.0146 GB value = 0.0000 GB dict = 0.00 MB all = 0.0483 GB } UnZip/Zip{ index = 11.6077 value = 0.0000 dict = 0.00 all = 4.8923 } Zip/UnZip{ index = 0.0861 value = inf dict = 0.00 all = 0.2044 } ---------------------------- total value len = 62.429664 GB avg = 0.171 KB (by entry num) total key len = 7.293717 GB avg = 0.020 KB total ukey len = 3.550427 GB avg = 0.009 KB total ukey num = 0.407338639 Billion total entry num = 0.364216647 Billion write speed all = 0.832682145 MB/sec (with seq num) write speed all = 0.797884441 MB/sec (without seq num) 2024/08/20-16:49:34.746523 140500229674560 [compaction_job.cc:1944] [default] [JOB 40302] Generated table #14675628: 8447546 keys, 48346013 bytes, temperature: kWarm 2024/08/20-16:49:34.746590 140500229674560 EVENT_LOG_v1 {"time_micros": 1724143774746556, "cf_name": "default", "job": 40302, "event": "table_file_creation", "file_number": 14675628, "file_size": 48346013, "file_checksum": "", "file_checksum_func_name": "Unknown", "smallest_seqno": 189650398894, "largest_seqno": 190802647945, "table_properties": {"data_size": 80, "index_size": 14554496, "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": 236524226, "raw_average_key_size": 27, "raw_value_size": 0, "raw_average_value_size": 0, "num_data_blocks": 1, "num_entries": 8447546, "num_filter_entries": 0, "num_deletions": 702465, "num_merge_operands": 0, "num_range_deletions": 0, "format_version": 0, "fixed_key_len": 0, "fixed_value_len": 0, "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-ZeroLengthBlobStore", "creation_time": 1724143768, "oldest_key_time": 0, "file_creation_time": 1724143768, "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": 14675628, "seqno_to_time_mapping": "N/A", "__indexstats__": "[...1 records...]"}} 2024/08/20-16:49:34.788633 140500229674560 [compaction_job.cc:699] job-40302: subcompact[0], size: 0.103059 G, files: /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-40302/att-00 [14675627,14675628] 2024/08/20-16:49:34.818360 140500229674560 (Original Log Time 2024/08/20-16:49:18.382650) EVENT_LOG_v1 {"time_micros": 1724143758382605, "job": 40302, "event": "compaction_started", "compaction_reason": "LevelMaxLevelSize", "files_L3": [14675541], "files_L4": [14670846, 14670847], "score": 1.00168, "input_data_size": 111687896, "oldest_snapshot_seqno": 190803429794} 2024/08/20-16:49:34.818364 140500229674560 (Original Log Time 2024/08/20-16:49:34.817793) [compaction_job.cc:2018] [default] [JOB 40302] Compacted 1@3 + 2@4 files to L4 => 103058811 bytes 2024/08/20-16:49:34.818365 140500229674560 (Original Log Time 2024/08/20-16:49:34.818296) [compaction_job.cc:1220] [default] compacted to: files[0 0 0 0 2 0 0] max score 0.00, MB/sec: 6.8 rd, 6.3 wr, level 4, files in(1, 2) out(2 +0 blob) MB in(18.1, 88.5 +0.0 blob) out(98.3 +0.0 blob), read-write-amplify(11.3) write-amplify(5.4) OK, records in: 20208418, records dropped: 2203340 output_compression: Snappy 2024/08/20-16:49:34.818372 140500229674560 (Original Log Time 2024/08/20-16:49:34.818339) EVENT_LOG_v1 {"time_micros": 1724143774818320, "cf": "default", "job": 40302, "event": "compaction_finished", "compaction_time_micros": 16405995, "compaction_time_cpu_micros": 11974367, "output_level": 4, "num_output_files": 2, "total_output_size": 103058811, "num_input_records": 20208418, "num_output_records": 18005078, "num_subcompactions": 1, "output_compression": "Snappy", "num_single_delete_mismatches": 0, "num_single_delete_fallthrough": 0, "file_write_nanos": 64014773, "file_range_sync_nanos": 0, "file_fsync_nanos": 1268, "file_prepare_write_nanos": 3520, "lsm_state": [0, 0, 0, 0, 2, 0, 0]} 2024/08/20-16:49:34.932979 140500229674560 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":1724143758,"executesMs":16567,"compactionJobId":40302,"attempt":0,"compactionInputRawBytes":560043210,"compactionInputZipBytes":111687896,"compactionOutputRawBytes":0,"compactionOutputZipBytes":103058811,"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":"00-04234d249db6868a8dd599f1e86bcbd4-a25ab21c3136f84a-00"}}, response = 2024/08/20-16:49:34.933075 140500229674560 INFO dcompact_worker.cpp:1456: finish /worker/dcompact-log/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/2024-08-20T02.42.00/.rocksdb/job-40302/att-00: olev 4, work 16.568 s, result 6.090 ms, install 0.599 ms, input{raw 534.099 MiB zip 106.514 MiB}