Test format is will constistently return a stuck cache with the following config:
############################################ # RUN PARAMETERS ############################################ abort=0 auto_throttle=1 backups=0 bitcnt=1 bloom=1 bloom_bit_count=9 bloom_hash_count=4 bloom_oldest=0 cache=2 checkpoints=1 checksum=uncompressed chunk_size=8 compaction=0 compression=snappy data_extend=0 data_source=file delete_pct=31 dictionary=0 direct_io=0 encryption=rotn-7 evict_max=0 file_type=row-store firstfit=0 huffman_key=0 huffman_value=0 in_memory=0 insert_pct=42 internal_key_truncation=1 internal_page_max=9 isolation=read-uncommitted key_gap=2 key_max=256 key_min=256 leaf_page_max=9 leak_memory=0 logging=1 logging_archive=0 logging_compression=snappy logging_prealloc=0 long_running_txn=0 lsm_worker_threads=3 merge_max=20 mmap=1 ops=100000 prefix_compression=1 prefix_compression_min=5 quiet=1 repeat_data_pct=33 reverse=0 rows=100000 runs=1 rebalance=1 salvage=1 split_pct=70 statistics=0 statistics_server=0 threads=2 timer=20 transaction-frequency=21 value_max=2786 value_min=256 verify=1 wiredtiger_config= write_pct=83 ############################################
Cache dump:
========== cache dump file:wt(checkpoint=WiredTigerCheckpoint.3): internal: 149 pages, 1MB, 149/0 clean/dirty pages, 1/0 clean/dirty MB, 0MB max page, 0MB max dirty page leaf: 1 pages, 0MB, 1/0 clean/dirty pages, 0/0 clean/dirty MB, 0MB max page, 0MB max dirty page file:wt(<live>): internal: 81 pages, 0MB, 5/76 clean/dirty pages, 0/0 clean/dirty MB, 0MB max page, 0MB max dirty page file:WiredTigerLAS.wt(<live>): internal: 1 pages, 0MB, 1/0 clean/dirty pages, 0/0 clean/dirty MB, 0MB max page, 0MB max dirty page file:WiredTiger.wt(<live>): internal: 1 pages, 0MB, 1/0 clean/dirty pages, 0/0 clean/dirty MB, 0MB max page, 0MB max dirty page cache dump: total found = 1MB vs tracked inuse 1MB total dirty bytes = 0MB ==========
Run:
http://build.wiredtiger.com:8080/job/wiredtiger-test-format-stress-zseries/13009/