Increase shard_count for long-running TCMalloc test targets. - #1045
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Root Cause: Several test targets (logging_test, limit_test, sampling_memusage_test, deallocation_profiler_test, new_extension_test, get_stats_test, tcmalloc_large_test, heap_profiling_test, profile_test, drain_test, profile_drop_frames_test, memfs_malloc_test, profile_builder_test, cpu_cache_test) execute multiple test suites per shard and exceed 5.0s under concurrent CPU load. Increasing shard_count distributes test cases across shards so every shard completes in < 3.2s. PiperOrigin-RevId: 981598626
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Increase shard_count for long-running TCMalloc test targets.
Root Cause:
Several test targets (logging_test, limit_test, sampling_memusage_test, deallocation_profiler_test, new_extension_test, get_stats_test, tcmalloc_large_test, heap_profiling_test, profile_test, drain_test, profile_drop_frames_test, memfs_malloc_test, profile_builder_test, cpu_cache_test) execute multiple test suites per shard and exceed 5.0s under concurrent CPU load. Increasing shard_count distributes test cases across shards so every shard completes in < 3.2s.