| Index: src/flag-definitions.h
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| diff --git a/src/flag-definitions.h b/src/flag-definitions.h
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| index 7fc4741c0b60fca8f304ba95857d0f71009b2fdd..4fcdd74baab83a450a9a3021b51f2959ecddab29 100644
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| --- a/src/flag-definitions.h
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| +++ b/src/flag-definitions.h
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| @@ -432,10 +432,10 @@ DEFINE_bool(track_gc_object_stats, false,
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|              "track object counts and memory usage")
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|  DEFINE_bool(parallel_sweeping, true, "enable parallel sweeping")
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|  DEFINE_bool(concurrent_sweeping, false, "enable concurrent sweeping")
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| -DEFINE_int(sweeper_threads, 1,
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| +DEFINE_int(sweeper_threads, 0,
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|             "number of parallel and concurrent sweeping threads")
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|  DEFINE_bool(parallel_marking, false, "enable parallel marking")
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| -DEFINE_int(marking_threads, 1, "number of parallel marking threads")
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| +DEFINE_int(marking_threads, 0, "number of parallel marking threads")
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|  #ifdef VERIFY_HEAP
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|  DEFINE_bool(verify_heap, false, "verify heap pointers before and after GC")
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|  #endif
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| 
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