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minor tweaks to db_crashtest.py settings (#9483)

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Summary:
I did another pass through running CI jobs. It is uncommon now to see
`db_stress` stuck in the setup phase but still happen.

One reason was repeatedly reading/verifying checksum on filter blocks when
`-cache_index_and_filter_blocks=1` and `-cache_size=1048576`. To address
that I increased the cache size.

Another reason was having a WAL with many range tombstones and every
`db_stress` run using `-avoid_flush_during_recovery=1` (in that
scenario, the setup phase spent too much CPU in
`rocksdb::MemTable::NewRangeTombstoneIteratorInternal()`). To address
that I fixed the `-avoid_flush_during_recovery` setting so it is
reevaluated for every `db_stress` run.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9483

Reviewed By: riversand963

Differential Revision: D33922929

Pulled By: ajkr

fbshipit-source-id: 0a298ec7c4df6f6b44620233996047a2dc7ee5f3
This commit is contained in:
Andrew Kryczka 2022-02-15 13:55:22 -08:00 committed by Facebook GitHub Bot
parent 57418aba51
commit ad2cab8f0c
1 changed files with 2 additions and 2 deletions
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4
tools/db_crashtest.py
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@ -36,7 +36,7 @@ default_params = {
"bloom_bits": lambda: random.choice([random.randint(0,19),
random.lognormvariate(2.3, 1.3)]),
"cache_index_and_filter_blocks": lambda: random.randint(0, 1),
"cache_size": 1048576,
"cache_size": 8388608,
"checkpoint_one_in": 1000000,
"compression_type": lambda: random.choice(
["none", "snappy", "zlib", "lz4", "lz4hc", "xpress", "zstd"]),
@ -134,7 +134,7 @@ default_params = {
[0, 0, 0, 1024 * 1024, 8 * 1024 * 1024, 128 * 1024 * 1024]),
"avoid_unnecessary_blocking_io" : random.randint(0, 1),
"write_dbid_to_manifest" : random.randint(0, 1),
"avoid_flush_during_recovery" : random.choice(
"avoid_flush_during_recovery" : lambda: random.choice(
[1 if t == 0 else 0 for t in range(0, 8)]),
"max_write_batch_group_size_bytes" : lambda: random.choice(
[16, 64, 1024 * 1024, 16 * 1024 * 1024]),