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  1. WiredTiger
  2. WT-2602

LSM stress hangs with very large uncompressed pages

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: WT2.9.0
    • Labels:
      None

      Description

      http://build.wiredtiger.com:8080/job/wiredtiger-test-format-stress-zseries/2139/console

      [1461996260:905477][8455:0x3ff9f8ff910], t, eviction-server: Cache stuck for too long, giving up: Connection timed out
      ==========
      cache dump
      file:wt-000003.lsm(<live>): 
      	internal pages: 1 pages, 145 max, 0MB total
      	leaf pages: 1 pages, 1487917 max, 1MB total
      	dirty pages: 1 pages, 1487917 max, 1MB total
      file:wt-000002.lsm(checkpoint=WiredTigerCheckpoint.1): 
      	internal pages: 1 pages, 1306 max, 0MB total
      	leaf pages: 9 pages, 9140648 max, 77MB total
      file:WiredTigerLAS.wt(<live>): 
      	internal pages: 1 pages, 145 max, 0MB total
      file:WiredTiger.wt(<live>): 
      	internal pages: 1 pages, 249 max, 0MB total
      	dirty pages: 1 pages, 249 max, 0MB total
      cache dump: total found = 85MB vs tracked inuse 85MB
      

      Note the 9MB uncompressed leaf pages – we're aiming for 128KB maximum on-disk leaf pages.

      ############################################
      #  RUN PARAMETERS
      ############################################
      abort=0
      auto_throttle=1
      backups=0
      bitcnt=6
      bloom=1
      bloom_bit_count=8
      bloom_hash_count=32
      bloom_oldest=0
      cache=60
      checkpoints=1
      checksum=on
      chunk_size=2
      compaction=0
      compression=zlib
      data_extend=0
      data_source=lsm
      delete_pct=30
      dictionary=0
      direct_io=0
      encryption=none
      evict_max=0
      file_type=row-store
      firstfit=0
      huffman_key=0
      huffman_value=0
      in_memory=0
      insert_pct=74
      internal_key_truncation=1
      internal_page_max=17
      isolation=snapshot
      key_gap=4
      key_max=116
      key_min=30
      leaf_page_max=17
      leak_memory=0
      logging=0
      logging_archive=1
      logging_compression=none
      logging_prealloc=1
      long_running_txn=0
      lsm_worker_threads=4
      merge_max=13
      mmap=1
      ops=100000
      prefix_compression=1
      prefix_compression_min=2
      quiet=1
      repeat_data_pct=47
      reverse=0
      rows=100000
      runs=100
      rebalance=1
      salvage=1
      split_pct=49
      statistics=0
      statistics_server=0
      threads=16
      timer=20
      transaction-frequency=6
      value_max=2696
      value_min=3
      verify=1
      wiredtiger_config=
      write_pct=77
      ############################################
      

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            • Assignee:
              michael.cahill Michael Cahill
              Reporter:
              michael.cahill Michael Cahill
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              Dates

              • Created:
                Updated:
                Resolved: