echo ::arc | mdb -k
hits = 6,579,098,581misses = 452,069,693demand_data_hits = 1,568,821,337demand_data_misses = 35,059,825demand_metadata_hits = 3,224,194,606demand_metadata_misses = 45,501,861prefetch_data_hits = 125,750,375prefetch_data_misses = 128,235,341prefetch_metadata_hits = 1,660,332,263prefetch_metadata_misses = 243,272,666mru_hits = 1,426,213,514mru_ghost_hits = 13,497,486mfu_hits = 3,403,854,705mfu_ghost_hits = 281,484,703deleted = 250,271,016recycle_miss = 65,465,441mutex_miss = 415,133evict_skip = 414,384,099evict_l2_cached =11,321,550,825,472evict_l2_eligible = 6,392,283,271,680evict_l2_ineligible = 9,111,346,605,568hash_elements = 1,457,128hash_elements_max = 2,131,419hash_collisions = 2,674,957,304hash_chains = 255,459hash_chain_max = 26p = 5,607 MBc = 8,820 MBc_min = 1,406 MBc_max = 11,255 MBsize = 8,820 MBhdr_size = 147,103,056data_size = 8,951,655,424other_size = 33,156,048l2_hits = 52,579,407l2_misses = 399,487,072l2_feeds = 12,909,282l2_rw_clash = 3,235l2_read_bytes = 1,967,823,256,576l2_write_bytes = 6,513,012,548,096l2_writes_sent = 7,047,789l2_writes_done = 7,047,789l2_writes_error = 0l2_writes_hdr_miss = 2,309l2_evict_lock_retry = 1,405l2_evict_reading = 184l2_free_on_write = 5,408,775l2_abort_lowmem = 418l2_cksum_bad = 0l2_io_error = 0l2_size = 61,163,917,312l2_hdr_size = 127,183,488memory_throttle_count = 0arc_no_grow = 0arc_tempreserve = 0 MBarc_meta_used = 2,813 MBarc_meta_limit = 2,813 MBarc_meta_max = 6,029 MB
L2ARC 32GB : arc_meta_limit 1.5GB : 物理mem 7GBL2ARC 64GB : arc_meta_limit 3GB : 物理mem 14GBL2ARC 192GB : arc_meta_limit 9GB : 物理mem 39GBL2ARC 256GB : arc_meta_limit 12GB : 物理mem 51GBL2ARC 512GB : arc_meta_limit 25GB : 物理mem 101GB