Artifact of SSBSE '25 Challenge: GreenMalloc: Allocator Optimisation for Industrial Workloads

1. Abstract This is the artifact of the paper GreenMalloc: Allocator Optimisation for Industrial Workloads. It contains the code of GreenMalloc and the results of the evaluation on gem5 with glibc malloc and tcmalloc. 2. Optimised Values glibc: - mmap_max - mmap_threshold - perturb - top_pad - trim_threshold - arena_test - arena_max tcmalloc: - TCMALLOC_SAMPLE_PARAMETER - TCMALLOC_RELEASE_RATE - TCMALLOC_MAX_TOTAL_THREAD_CACHE_BYTES - TCMALLOC_AGGRESSIVE_DECOMMIT - TCMALLOC_OVERRIDE_PAGESIZE - TCMALLOC_HEAP_LIMIT_MB - TCMALLOC_SKIP_MMAP - TCMALLOC_SKIP_SBRK - TCMALLOC_MEMFS_LIMIT_MB - TCMALLOC_MEMFS_ABORT_ON_FAIL - TCMALLOC_MEMFS_IGNORE_MMAP_FAIL - TCMALLOC_MEMFS_MAP_PRIVATE - TCMALLOC_MEMFS_DISABLE_FALLBACK Specifically, we tune: TUNABLE_SPECS: ClassVar[Dict[str, Dict[str, Any]]] = { "mmap_max": {"type": "int", "low": 0, "high": 16 * 1024 * 1024}, "mmap_threshold": {"type": "int", "low": 0, "high": 1 << 20}, "perturb": {"type": "int", "low": 0, "high": 255}, "top_pad": {"type": "int", "low": 0, "high": 1 << 20}, "trim_threshold": {"type": "int", "low": 0, "high": 1 << 20}, "arena_test": {"type": "int", "low": 0, "high": 1 << 20}, "arena_max": {"type": "int", "low": 0, "high": 128},} TUNABLE_SPECS: ClassVar[Dict[str, Dict[str, Any]]] = { "TCMALLOC_SAMPLE_PARAMETER": {"type": "int", "low": 0, "high": 1 << 20}, "TCMALLOC_RELEASE_RATE": {"type": "int", "low": 0, "high": 1 << 20}, "TCMALLOC_MAX_TOTAL_THREAD_CACHE_BYTES": {"type": "int", "low": 0, "high": 1 << 30}, "TCMALLOC_AGGRESSIVE_DECOMMIT": {"type": "bool", "low": 0, "high": 1}, "TCMALLOC_OVERRIDE_PAGESIZE": {"type": "int", "low": 4096, "high": 1 << 20}, "TCMALLOC_HEAP_LIMIT_MB": {"type": "int", "low": 0, "high": 1 << 20}, "TCMALLOC_SKIP_MMAP": {"type": "bool", "low": 0, "high": 1}, "TCMALLOC_SKIP_SBRK": {"type": "bool", "low": 0, "high": 1}, "TCMALLOC_MEMFS_LIMIT_MB": {"type": "int", "low": 0, "high": 1 << 20}, "TCMALLOC_MEMFS_ABORT_ON_FAIL": {"type": "bool", "low": 0, "high": 1}, "TCMALLOC_MEMFS_IGNORE_MMAP_FAIL": {"type": "bool", "low": 0, "high": 1}, "TCMALLOC_MEMFS_MAP_PRIVATE": {"type": "bool", "low": 0, "high": 1}, "TCMALLOC_MEMFS_DISABLE_FALLBACK": {"type": "bool", "low": 0, "high": 1}, }