erez-speedb

Running with allow WBM stall ended with full hang.

1

Running the large obj test, 200milion 1K keys never finished. db_bench flag " -allow_wbm_stalls -db_write_buffer_size=110000000" Attaching gdb yiled: `#0 futex_wait_cancelable (private=, expected=0, futex_word=0x55f4c1d73ab4) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f4c1d73a60,...

Running with multiple groups resulted in hang.

6

Running this simple benchmark `./db_bench -groups "-memtablerep=skip_list --benchmarks=fillrandom,levelstats,flush,overwrite --compression_type=None -db=/data/ -num=500000 -value_size=1000 -key_size=16 --delayed_write_rate=536870912 -report_interval_seconds=1 -max_write_buffer_number=4 -num_column_families=1 -histogram -report_file=fillrandom.csv --disable_wal=true -db_write_buffer_size=110000000 -max_background_compactions=8 -max_background_flushes=4 -bloom_bits=10" " --benchmarks=overwrite"` The same test with...

db_bench enhancement, when running multiple bench the creation of separate report file for each benchmark

1

Owner: db_bench supports running multiple sequential benchmarks -benchmark=,, And currently there one report file only, probably for the last benchmark only. I suggest et supporting multiple report files in the...

Add disk speed optimizations to the enable_speedb_feature

1

Depands on the disk speed we would like to tune: delayed_write_rate hard_pending_compaction_bytes_limit soft_pending_compaction_bytes_limit bytes_per_sync