f683f68b91
Co-authored-by: Stephanie <53684987+seristof@users.noreply.github.com> GitOrigin-RevId: c414923e008f4343538daf84c26923f120b5318e
100 lines
4.4 KiB
Python
100 lines
4.4 KiB
Python
"""Minimum and maximum declarations for all WiredTiger parameters that are supported by the config fuzzer."""
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"""
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For context and maintenance, see:
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https://github.com/10gen/mongo/blob/master/buildscripts/resmokelib/generate_fuzz_config/README.md#adding-new-wiredtiger-parameters
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"""
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target_bytes_min = 50 * 1024 * 1024 # 50MB # 5% of 1GB default cache size on Evergreen
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target_bytes_max = 256 * 1024 * 1024 # 256MB # 25.6% of 1GB default cache size on Evergreen
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# We want eviction_dirty_trigger and eviction_updates_trigger >= 64MB. See SERVER-96683.
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min_trigger_bytes = 64 * 1024 * 1024 # 64MB # 6.4% of 1GB default cache size on Evergreen
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config_fuzzer_params = {
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# WiredTiger's debug_mode offers some settings to change internal behavior that could help
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# find bugs. Settings to fuzz:
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# eviction - Turns aggressive eviction on/off
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# realloc_exact - Finds more memory bugs by allocating the memory for the exact size asked
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# rollback_error - Forces WiredTiger to return a rollback error every Nth call
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"wt": {
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# The following three parameters are for fuzzing file manager settings.
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"close_idle_time_secs": {"min": 1, "max": 100},
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"close_handle_minimum": {"min": 0, "max": 1000},
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"close_scan_interval": {"min": 1, "max": 100},
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"dbg_eviction": {"choices": ["true", "false"]},
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"dbg_realloc_exact": {"choices": ["true", "false"]},
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"dbg_rollback_error": {
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"min": 0,
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"max": 1500,
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"lower_bound": 250,
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"upper_bound": 1500,
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"choices": [0],
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},
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# 1% of 1GB default cache size on Evergreen, 99% of 1GB default cache size on Evergreen
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"eviction_checkpoint_target": {"min": 10 * 1024 * 1024, "max": 990 * 1024 * 1024},
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# 50% of 1GB default cache size on Evergreen, 95% of 1GB default cache size on Evergreen
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"eviction_target": {"min": 500 * 1024 * 1024, "max": 950 * 1024 * 1024},
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"eviction_trigger": {
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"lower_bound": 1,
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# 99% of 1GB default cache size on Evergreen
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"upper_bound": 990 * 1024 * 1024,
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"min": "(eviction_target + 1)",
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"max": 990 * 1024 * 1024,
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},
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"eviction_dirty_target": {
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"min": target_bytes_min,
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"max": target_bytes_max,
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},
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"eviction_dirty_trigger": {
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"min": "max(eviction_dirty_target + 1, min_trigger_bytes)",
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"max": "trigger_max",
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},
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# eviction_updates_target/trigger are relative to previously fuzzed values.
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"eviction_updates_target": {
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"min": "updates_target_min",
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"max": "eviction_dirty_target - 1",
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},
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"eviction_updates_trigger": {
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"min": "max(eviction_updates_target + 1, min_trigger_bytes)",
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"max": "eviction_dirty_trigger - 1",
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},
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"trigger_max": {"default": target_bytes_max},
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# We fuzz eviction_updates_target and eviction_updates_trigger using updates_target_min. These are
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# by default half the values of the corresponding eviction dirty target and trigger. They need to stay
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# less than the dirty equivalents. The default updates target is 2.5% of the cache, so let's start fuzzing
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# from 2%.
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"updates_target_min": {"default": 20 * 1024 * 1024},
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},
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"wt_table": {
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"block_compressor": {"choices": ["none", "snappy", "zlib", "zstd"]},
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# The following three parameters get multipled by their multiplier after the choice in choices is made.
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"internal_page_max": {
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"choices": [4, 8, 12, 1024, 10 * 1024],
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"min": 4 * 1024,
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"max": 10 * 1024 * 1024,
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"multiplier": 1024,
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},
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"leaf_page_max": {
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"choices": [4, 8, 12, 1024, 10 * 1024],
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"min": 4 * 1024,
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"max": 10 * 1024 * 1024,
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"multiplier": 1024,
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},
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"leaf_value_max": {
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"choices": [1, 32, 128, 256],
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"min": 1 * 1024 * 1024,
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"max": 256 * 1024 * 1024,
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"multiplier": 1024 * 1024,
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},
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"memory_page_max_upper_bound": {
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"min": (256 * 1024 * 1024) / 10,
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"max": (1024 * 1024 * 1024) / 10,
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"multiplier": 1024 * 1024,
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"lower_bound": 256,
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"upper_bound": 1024,
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},
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"prefix_compression": {"choices": ["true", "false"]},
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"split_pct": {"choices": [50, 60, 75, 100], "min": 50, "max": 100},
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},
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}
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