2024/08/20-12:57:39.011983 140500288423488 DEBG dcompact_worker.cpp:2211: /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-30761/att-00: fork to child time = 0.052528 sec 2024/08/20-12:57:39.013164 140500288423488 DEBG dcompact_worker.cpp:1011: Beg SerDeRead: /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-30761/att-00 2024/08/20-12:57:39.019705 140500288423488 DEBG dcompact_worker.cpp:1031: End SerDeRead: /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-30761/att-00 2024/08/20-12:57:39.020185 140500288423488 TRAC dcompact_worker.cpp:1081: INFO_LOG_LEVEL: rpc = INFO_LEVEL, env_var = undefined 2024/08/20-12:57:39.020597 140500288423488 [WARN] [column_family.cc:386] multiple cf_paths/db_paths and level_compaction_dynamic_level_bytes can't be used together 2024/08/20-12:57:39.057732 140500288423488 [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-30761/att-00/MANIFEST-14629260 2024/08/20-12:57:39.072879 140500288423488 [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-30761/att-00/MANIFEST-14629260 succeeded,manifest_file_number is 14629260, next_file_number is 14664596, last_sequence is 190563722521, log_number is 0,prev_log_number is 0,max_column_family is 0,min_log_number_to_keep is 14664514 2024/08/20-12:57:39.072890 140500288423488 [version_set.cc:6197] Column family [default] (ID 0), log number is 0 2024/08/20-12:57:39.072984 140500288423488 [version_set.cc:5652] Creating manifest 14664596 2024/08/20-12:57:39.100140 140500288423488 DEBG dcompact_worker.cpp:1215: /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-30761/att-00: bottommost_level: fake = 1, rpc = 0 2024/08/20-12:57:39.117189 140500288423488 [compaction_job.cc:2433] [default] [JOB 30761] Compacting 1@1 + 2@2 files to L2, score 0.98, subcompactions 1 : 1 2024/08/20-12:57:39.117208 140500288423488 [compaction_job.cc:2441] [default]: Compaction start summary: Base version 15726 Base level 1, inputs: [14664544(20MB)], [14664594(20MB) 14664473(12MB)] 2024/08/20-12:57:39.278864 140500288423488 [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 2024/08/20-12:57:39.278899 140500288423488 [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 2024/08/20-12:57:39.278935 140500288423488 [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 2024/08/20-12:57:39.278952 140500288423488 [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 2024/08/20-12:57:39.278966 140500288423488 [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 2024/08/20-12:57:39.442803 140500288423488 [top_zip_table_builder.cc:934] ToplingZipTableBuilder(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-30761/att-00/14664597.sst) /dev/shm/ToplingTemp/Topling-356729-01UKCm 2024/08/20-12:57:39.980036 140500288423488 [top_zip_table_builder.cc:1344] ToplingZipTableBuilder::Finish(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-30761/att-00/14664597.sst): first pass time = 0.54's, 124.932'MB/sec 2024/08/20-12:57:40.982181 140500288423488 [top_zip_table_builder.cc:2764] ToplingZipTableBuilder::Finish(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-30761/att-00/14664597.sst): old prealloc_size = 60910371, real_size = 19528112 2024/08/20-12:57:40.982554 140500288423488 [top_zip_table_builder.cc:1765] BuildReorderMap(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-30761/att-00/14664597.sst): index type = NestLoudsTrieDAWG_Mixed_XL_256_32_FL, store type = DictZipBlobStore usrkeys = 466197 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 = 0.0185 GB avg-val = 115.95 avg-zval = 39.72 2024/08/20-12:57:40.982998 140500288423488 [top_zip_table_builder.cc:1295] /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-30761/att-00/14664597.sst: sumWaitingMem = 0.001 GB, sumWorkingMem = 0.020 GB, reorder workingMem = 0.0011 GB, waited 0.000 sec, Key+Value = 0.067 GB 2024/08/20-12:57:41.357847 140500288423488 [top_zip_table_builder.cc:3092] ToplingZipTableBuilder::Finish(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-30761/att-00/14664597.sst): second pass time = 1.00's, 54.000'MB/sec, value only(80.5% of KV) wait indexing time = 0.00's, remap KeyValue time = 0.38's, 57.009'MB/sec (all stages of remap) Get OrderMap time = 0.00's, 2562.260'MB/sec (index lex order gen) rebuild zvType time = 0.30's, 0.383'MB/sec write SST data time = 0.07's, 303.092'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 = 13973.184'MB/sec zip my value time = 1.00's, unzip length = 0.054'GB zip my value throughput = 54.000'MB/sec zip pipeline throughput = 54.000'MB/sec entries = 466197 avg-key = 28.00 avg-zkey = 1.92 avg-val = 115.95 avg-zval = 39.72 usrkeys = 466197 avg-key = 20.00 avg-zkey = 1.92 avg-val = 122.95 avg-zval = 39.72 TagRS{ kinds = RS_Key0_Tag1 bytes = 0 } TagArray{ size = 466197 bytes = 1456880 } seq expand size = 3263379 multi value expand size = 0 cnt WriteAppend = 13 UnZipSize{ index = 0.0093 GB value = 0.0541 GB dict = 0.54 MB all = 0.0671 GB } __ZipSize{ index = 0.0009 GB value = 0.0185 GB dict = 0.54 MB all = 0.0214 GB } UnZip/Zip{ index = 10.4315 value = 2.9191 dict = 1.00 all = 3.1334 } Zip/UnZip{ index = 0.0959 value = 0.3426 dict = 1.00 all = 0.3191 } ---------------------------- total value len = 62.354069 GB avg = 0.180 KB (by entry num) total key len = 6.801811 GB avg = 0.020 KB total ukey len = 3.198831 GB avg = 0.008 KB total ukey num = 0.389799758 Billion total entry num = 0.346677766 Billion write speed all = 0.990485904 MB/sec (with seq num) write speed all = 0.950763533 MB/sec (without seq num) 2024/08/20-12:57:41.385991 140500288423488 [compaction_job.cc:1944] [default] [JOB 30761] Generated table #14664597: 466197 keys, 21417290 bytes, temperature: kWarm 2024/08/20-12:57:41.386074 140500288423488 EVENT_LOG_v1 {"time_micros": 1724129861386029, "cf_name": "default", "job": 30761, "event": "table_file_creation", "file_number": 14664597, "file_size": 21417290, "file_checksum": "", "file_checksum_func_name": "Unknown", "smallest_seqno": 190530154653, "largest_seqno": 190563364971, "table_properties": {"data_size": 18517536, "index_size": 893824, "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": 13053516, "raw_average_key_size": 28, "raw_value_size": 54055414, "raw_average_value_size": 115, "num_data_blocks": 1, "num_entries": 466197, "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": 1724129859, "oldest_key_time": 0, "file_creation_time": 1724129859, "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": 14664597, "seqno_to_time_mapping": "N/A", "__indexstats__": "[...1 records...]"}} 2024/08/20-12:57:41.409943 140500288423488 [top_zip_table_builder.cc:934] ToplingZipTableBuilder(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-30761/att-00/14664598.sst) /dev/shm/ToplingTemp/Topling-356729-FmgVBm 2024/08/20-12:57:42.164396 140500288423488 [top_zip_table_builder.cc:1344] ToplingZipTableBuilder::Finish(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-30761/att-00/14664598.sst): first pass time = 0.75's, 80.992'MB/sec 2024/08/20-12:57:43.875583 140500288423488 [top_zip_table_builder.cc:2764] ToplingZipTableBuilder::Finish(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-30761/att-00/14664598.sst): old prealloc_size = 60910371, real_size = 17526384 2024/08/20-12:57:43.875896 140500288423488 [top_zip_table_builder.cc:1765] BuildReorderMap(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-30761/att-00/14664598.sst): index type = NestLoudsTrieDAWG_Mixed_XL_256_32_FL, store type = DictZipBlobStore usrkeys = 424697 prefix = 4 raw-key = 0.0068 GB zip-key = 0.0008 GB avg-key = 16.00 avg-zkey = 1.90 raw-val = 0.0492 GB zip-val = 0.0166 GB avg-val = 115.87 avg-zval = 39.11 2024/08/20-12:57:43.876297 140500288423488 [top_zip_table_builder.cc:1295] /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-30761/att-00/14664598.sst: sumWaitingMem = 0.001 GB, sumWorkingMem = 0.020 GB, reorder workingMem = 0.0010 GB, waited 0.000 sec, Key+Value = 0.061 GB 2024/08/20-12:57:44.210977 140500288423488 [top_zip_table_builder.cc:3092] ToplingZipTableBuilder::Finish(/storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-30761/att-00/14664598.sst): second pass time = 1.71's, 28.773'MB/sec, value only(80.5% of KV) wait indexing time = 0.00's, remap KeyValue time = 0.34's, 57.398'MB/sec (all stages of remap) Get OrderMap time = 0.00's, 2852.107'MB/sec (index lex order gen) rebuild zvType time = 0.27's, 0.390'MB/sec write SST data time = 0.06's, 304.926'MB/sec dict compress time = 4356233619.02's, 0.000'MB/sec z-dict build time = 0.00's, sample length = 0.500'MB, throughput = 13062.940'MB/sec zip my value time = 1.71's, unzip length = 0.049'GB zip my value throughput = 28.773'MB/sec zip pipeline throughput = 139.280'MB/sec entries = 424697 avg-key = 28.00 avg-zkey = 1.90 avg-val = 115.87 avg-zval = 39.11 usrkeys = 424697 avg-key = 20.00 avg-zkey = 1.90 avg-val = 122.87 avg-zval = 39.11 TagRS{ kinds = RS_Key0_Tag1 bytes = 0 } TagArray{ size = 424697 bytes = 1327200 } seq expand size = 2972879 multi value expand size = 0 cnt WriteAppend = 13 UnZipSize{ index = 0.0085 GB value = 0.0492 GB dict = 0.50 MB all = 0.0611 GB } __ZipSize{ index = 0.0008 GB value = 0.0166 GB dict = 0.50 MB all = 0.0193 GB } UnZip/Zip{ index = 10.5015 value = 2.9625 dict = 1.00 all = 3.1741 } Zip/UnZip{ index = 0.0952 value = 0.3376 dict = 1.00 all = 0.3151 } ---------------------------- total value len = 62.406252 GB avg = 0.180 KB (by entry num) total key len = 6.813703 GB avg = 0.020 KB total ukey len = 3.207325 GB avg = 0.008 KB total ukey num = 0.390224455 Billion total entry num = 0.347102463 Billion write speed all = 0.991363103 MB/sec (with seq num) write speed all = 0.951593695 MB/sec (without seq num) 2024/08/20-12:57:44.253541 140500288423488 [compaction_job.cc:1944] [default] [JOB 30761] Generated table #14664598: 424697 keys, 19250302 bytes, temperature: kWarm 2024/08/20-12:57:44.253621 140500288423488 EVENT_LOG_v1 {"time_micros": 1724129864253575, "cf_name": "default", "job": 30761, "event": "table_file_creation", "file_number": 14664598, "file_size": 19250302, "file_checksum": "", "file_checksum_func_name": "Unknown", "smallest_seqno": 190542282445, "largest_seqno": 190563364757, "table_properties": {"data_size": 16611168, "index_size": 808832, "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": 11891516, "raw_average_key_size": 28, "raw_value_size": 49210242, "raw_average_value_size": 115, "num_data_blocks": 1, "num_entries": 424697, "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": 1724129861, "oldest_key_time": 0, "file_creation_time": 1724129861, "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": 14664598, "seqno_to_time_mapping": "N/A", "__indexstats__": "[...1 records...]"}} 2024/08/20-12:57:44.269713 140500288423488 [compaction_job.cc:699] job-30761: subcompact[0], size: 0.040668 G, files: /storage/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/mytopling/.rocksdb/job-30761/att-00 [14664597,14664598] 2024/08/20-12:57:44.313903 140500288423488 (Original Log Time 2024/08/20-12:57:39.117290) EVENT_LOG_v1 {"time_micros": 1724129859117226, "job": 30761, "event": "compaction_started", "compaction_reason": "FilesMarkedForCompaction", "files_L1": [14664544], "files_L2": [14664594, 14664473], "score": 0.976393, "input_data_size": 55373065, "oldest_snapshot_seqno": 190563722385} 2024/08/20-12:57:44.313907 140500288423488 (Original Log Time 2024/08/20-12:57:44.306667) [compaction_job.cc:2018] [default] [JOB 30761] Compacted 1@1 + 2@2 files to L2 => 40667592 bytes 2024/08/20-12:57:44.313909 140500288423488 (Original Log Time 2024/08/20-12:57:44.313829) [compaction_job.cc:1220] [default] compacted to: files[0 0 2 0 0 0 0] max score 0.02, MB/sec: 10.7 rd, 7.9 wr, level 2, files in(1, 2) out(2 +0 blob) MB in(20.1, 32.7 +0.0 blob) out(38.8 +0.0 blob), read-write-amplify(4.6) write-amplify(1.9) OK, records in: 890894, records dropped: 0 output_compression: Snappy 2024/08/20-12:57:44.313919 140500288423488 (Original Log Time 2024/08/20-12:57:44.313877) EVENT_LOG_v1 {"time_micros": 1724129864313857, "cf": "default", "job": 30761, "event": "compaction_finished", "compaction_time_micros": 5152436, "compaction_time_cpu_micros": 1573961, "output_level": 2, "num_output_files": 2, "total_output_size": 40667592, "num_input_records": 890894, "num_output_records": 890894, "num_subcompactions": 1, "output_compression": "Snappy", "num_single_delete_mismatches": 0, "num_single_delete_fallthrough": 0, "file_write_nanos": 26930210, "file_range_sync_nanos": 0, "file_fsync_nanos": 1444, "file_prepare_write_nanos": 5322, "lsm_state": [0, 0, 2, 0, 0, 0, 0]} 2024/08/20-12:57:44.447699 140500288423488 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":1724129858,"executesMs":5282,"compactionJobId":30761,"attempt":0,"compactionInputRawBytes":128210688,"compactionInputZipBytes":55373065,"compactionOutputRawBytes":0,"compactionOutputZipBytes":40667592,"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-aff9b41b03832b7a5c467cfcf1e92842-8b9e46506a5a4873-00"}}, response = 2024/08/20-12:57:44.447798 140500288423488 INFO dcompact_worker.cpp:1456: finish /worker/dcompact-log/nfs/i-wz9deglxdazgiryp6ltb_10.57.5.137/2024-08-20T02.42.00/.rocksdb/job-30761/att-00: olev 2, work 5.282 s, result 11.950 ms, install 7.295 ms, input{raw 122.271 MiB zip 52.808 MiB}