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fix(test): reduce ASAN wall-clock rate in BoundMethodHandleProfilerTest to avoid OOM - #630
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…st to avoid OOM BoundMethodHandleProfilerTest sampled at wall=100us (~10k samples/s). Under ASAN the bound-method-handle workload runs for minutes, and because wall-clock sampling is time-based, a slow aarch64 CI runner accumulates a huge number of MethodSample events. verifyEvents() then loads the entire recording into a JMC object model inside the 512MB ASAN test heap (-Xmx512m), causing an OOM (or the multi-minute runtime trips the CI job timeout). Coarsen the sampling to wall=1ms under ASAN (10x fewer samples, independent of runner speed) and drop the aarch64+asan workload from 1000 to 500 handles for margin. Verified on aarch64: MethodSample count drops from 57,735 to 275 while the test still passes. Environment: Datadog workspace Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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CI Test ResultsRun: #34249236363 | Commit:
Summary: Total: 0 | Passed: 0 | Failed: 0 Updated: 2026-09-08 16:39:21 UTC |
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Problem
BoundMethodHandleProfilerTestfails on aarch64 under:ddprof-test:testAsan— it runs very long and OOMs.Root cause
The test samples at
wall=100us(~10k samples/s). Under ASAN the bound-method-handle workload runs for minutes, and because wall-clock sampling is time-based, a slower aarch64 CI runner accumulates a huge number ofdatadog.MethodSampleevents for the same workload.verifyEvents()then loads the entire recording into a JMC object model inside the 512MB ASAN test heap (-Xmx512m), which OOMs — or the multi-minute runtime trips the CI job timeout.The pre-existing 1000-handle aarch64 workaround was fragile because reducing the work count only partly reduces runtime; it doesn't decouple sample count from runner speed.
Fix
wall=1msunder ASAN (10× fewer samples, independent of runner speed).Verification (on aarch64)
datadog.MethodSampleeventswall=100us, 1000)wall=1ms, 500)🤖 Generated with Claude Code