diff options
| -rw-r--r-- | buildscripts/resmokelib/mongod_fuzzer_configs.py | 40 |
1 files changed, 37 insertions, 3 deletions
diff --git a/buildscripts/resmokelib/mongod_fuzzer_configs.py b/buildscripts/resmokelib/mongod_fuzzer_configs.py index a9750997fef..7fa8143ba72 100644 --- a/buildscripts/resmokelib/mongod_fuzzer_configs.py +++ b/buildscripts/resmokelib/mongod_fuzzer_configs.py @@ -21,17 +21,49 @@ def generate_eviction_configs(rng): assert eviction_dirty_trigger > eviction_dirty_target assert eviction_dirty_trigger <= trigger_max + # Fuzz eviction_updates_target and eviction_updates_trigger. These are by default half the + # values of the corresponding eviction dirty target and trigger. They need to stay less than the + # dirty equivalents. The default updates target is 2.5% of the cache, so let's start fuzzing + # from 2%. + updates_target_min = 2 if eviction_dirty_target <= 100 else 20 * 1024 * 1024 # 2% of 1GB cache + eviction_updates_target = rng.randint(updates_target_min, eviction_dirty_target - 1) + eviction_updates_trigger = rng.randint(eviction_updates_target + 1, eviction_dirty_trigger - 1) + + # Fuzz File manager settings close_idle_time_secs = rng.randint(1, 100) close_handle_minimum = rng.randint(0, 1000) close_scan_interval = rng.randint(1, 100) - return "eviction_checkpoint_target={0},eviction_dirty_target={1},eviction_dirty_trigger={2},"\ - "eviction_target={3},eviction_trigger={4},file_manager=(close_handle_minimum={5},"\ - "close_idle_time={6},close_scan_interval={7})".format(eviction_checkpoint_target, + # The debug_mode for WiredTiger offers some settings to change internal behavior that could help + # find bugs. Settings to fuzz: + # eviction - Turns aggressive eviction on/off + # realloc_exact - Finds more memory bugs by allocating the memory for the exact size asked + # rollback_error - Forces WiredTiger to return a rollback error every Nth call + # slow_checkpoint - Adds internal delays in processing internal leaf pages during a checkpoint + dbg_eviction = rng.choice(['true', 'false']) + dbg_realloc_exact = rng.choice(['true', 'false']) + # Rollback every Nth transaction. The values have been tuned after looking at how many + # WiredTiger transactions happen per second for the config-fuzzed jstests. + # The setting is trigerring bugs, disabled until they get resolved. + # dbg_rollback_error = rng.choice([0, rng.randint(250, 1500)]) + dbg_rollback_error = 0 + dbg_slow_checkpoint = rng.choice(['true', 'false']) + + return "debug_mode=(eviction={0},realloc_exact={1},rollback_error={2}, slow_checkpoint={3}),"\ + "eviction_checkpoint_target={4},eviction_dirty_target={5},eviction_dirty_trigger={6},"\ + "eviction_target={7},eviction_trigger={8},eviction_updates_target={9},"\ + "eviction_updates_trigger={10},file_manager=(close_handle_minimum={11},"\ + "close_idle_time={12},close_scan_interval={13})".format(dbg_eviction, + dbg_realloc_exact, + dbg_rollback_error, + dbg_slow_checkpoint, + eviction_checkpoint_target, eviction_dirty_target, eviction_dirty_trigger, eviction_target, eviction_trigger, + eviction_updates_target, + eviction_updates_trigger, close_handle_minimum, close_idle_time_secs, close_scan_interval) @@ -92,6 +124,8 @@ def generate_independent_parameters(rng): # The old retryable writes format is used by other variants. Weight towards turning on the # new retryable writes format on in this one. ret["storeFindAndModifyImagesInSideCollection"] = True + ret["syncdelay"] = rng.choice([60, rng.randint(15, 180)]) + ret["minSnapshotHistoryWindowInSeconds"] = rng.choice([300, rng.randint(5, 600)]) return ret |