diff --git a/cmd/arc_summary b/cmd/arc_summary index 9d0c2d30d..714962946 100755 --- a/cmd/arc_summary +++ b/cmd/arc_summary @@ -558,8 +558,12 @@ def section_arc(kstats_dict): arc_target_size = arc_stats['c'] arc_max = arc_stats['c_max'] arc_min = arc_stats['c_min'] + anon_size = arc_stats['anon_size'] mfu_size = arc_stats['mfu_size'] mru_size = arc_stats['mru_size'] + mfug_size = arc_stats['mfu_ghost_size'] + mrug_size = arc_stats['mru_ghost_size'] + unc_size = arc_stats['uncached_size'] meta_limit = arc_stats['arc_meta_limit'] meta_size = arc_stats['arc_meta_used'] dnode_limit = arc_stats['arc_dnode_limit'] @@ -574,11 +578,17 @@ def section_arc(kstats_dict): f_perc(arc_min, arc_max), f_bytes(arc_min)) prt_i2('Max size (high water):', target_size_ratio, f_bytes(arc_max)) - caches_size = int(mfu_size)+int(mru_size) + caches_size = int(anon_size)+int(mfu_size)+int(mru_size)+int(unc_size) + prt_i2('Anonymouns data size:', + f_perc(anon_size, caches_size), f_bytes(anon_size)) prt_i2('Most Frequently Used (MFU) cache size:', f_perc(mfu_size, caches_size), f_bytes(mfu_size)) prt_i2('Most Recently Used (MRU) cache size:', f_perc(mru_size, caches_size), f_bytes(mru_size)) + prt_i1('Most Frequently Used (MFU) ghost size:', f_bytes(mfug_size)) + prt_i1('Most Recently Used (MRU) ghost size:', f_bytes(mrug_size)) + prt_i2('Uncached data size:', + f_perc(unc_size, caches_size), f_bytes(unc_size)) prt_i2('Metadata cache size (hard limit):', f_perc(meta_limit, arc_max), f_bytes(meta_limit)) prt_i2('Metadata cache size (current):', @@ -626,78 +636,119 @@ def section_archits(kstats_dict): """ arc_stats = isolate_section('arcstats', kstats_dict) - all_accesses = int(arc_stats['hits'])+int(arc_stats['misses']) - actual_hits = int(arc_stats['mfu_hits'])+int(arc_stats['mru_hits']) - - prt_1('ARC total accesses (hits + misses):', f_hits(all_accesses)) - ta_todo = (('Cache hit ratio:', arc_stats['hits']), - ('Cache miss ratio:', arc_stats['misses']), - ('Actual hit ratio (MFU + MRU hits):', actual_hits)) + all_accesses = int(arc_stats['hits'])+int(arc_stats['iohits'])+\ + int(arc_stats['misses']) + prt_1('ARC total accesses:', f_hits(all_accesses)) + ta_todo = (('Total hits:', arc_stats['hits']), + ('Total I/O hits:', arc_stats['iohits']), + ('Total misses:', arc_stats['misses'])) for title, value in ta_todo: prt_i2(title, f_perc(value, all_accesses), f_hits(value)) + print() dd_total = int(arc_stats['demand_data_hits']) +\ + int(arc_stats['demand_data_iohits']) +\ int(arc_stats['demand_data_misses']) - prt_i2('Data demand efficiency:', - f_perc(arc_stats['demand_data_hits'], dd_total), - f_hits(dd_total)) - - dp_total = int(arc_stats['prefetch_data_hits']) +\ - int(arc_stats['prefetch_data_misses']) - prt_i2('Data prefetch efficiency:', - f_perc(arc_stats['prefetch_data_hits'], dp_total), - f_hits(dp_total)) - - known_hits = int(arc_stats['mfu_hits']) +\ - int(arc_stats['mru_hits']) +\ - int(arc_stats['mfu_ghost_hits']) +\ - int(arc_stats['mru_ghost_hits']) - - anon_hits = int(arc_stats['hits'])-known_hits - + prt_2('ARC demand data accesses:', f_perc(dd_total, all_accesses), + f_hits(dd_total)) + dd_todo = (('Demand data hits:', arc_stats['demand_data_hits']), + ('Demand data I/O hits:', arc_stats['demand_data_iohits']), + ('Demand data misses:', arc_stats['demand_data_misses'])) + for title, value in dd_todo: + prt_i2(title, f_perc(value, dd_total), f_hits(value)) print() - print('Cache hits by cache type:') + + dm_total = int(arc_stats['demand_metadata_hits']) +\ + int(arc_stats['demand_metadata_iohits']) +\ + int(arc_stats['demand_metadata_misses']) + prt_2('ARC demand metadata accesses:', f_perc(dm_total, all_accesses), + f_hits(dm_total)) + dm_todo = (('Demand metadata hits:', arc_stats['demand_metadata_hits']), + ('Demand metadata I/O hits:', + arc_stats['demand_metadata_iohits']), + ('Demand metadata misses:', arc_stats['demand_metadata_misses'])) + for title, value in dm_todo: + prt_i2(title, f_perc(value, dm_total), f_hits(value)) + print() + + pd_total = int(arc_stats['prefetch_data_hits']) +\ + int(arc_stats['prefetch_data_iohits']) +\ + int(arc_stats['prefetch_data_misses']) + prt_2('ARC prefetch metadata accesses:', f_perc(pd_total, all_accesses), + f_hits(pd_total)) + pd_todo = (('Prefetch data hits:', arc_stats['prefetch_data_hits']), + ('Prefetch data I/O hits:', arc_stats['prefetch_data_iohits']), + ('Prefetch data misses:', arc_stats['prefetch_data_misses'])) + for title, value in pd_todo: + prt_i2(title, f_perc(value, pd_total), f_hits(value)) + print() + + pm_total = int(arc_stats['prefetch_metadata_hits']) +\ + int(arc_stats['prefetch_metadata_iohits']) +\ + int(arc_stats['prefetch_metadata_misses']) + prt_2('ARC prefetch metadata accesses:', f_perc(pm_total, all_accesses), + f_hits(pm_total)) + pm_todo = (('Prefetch metadata hits:', + arc_stats['prefetch_metadata_hits']), + ('Prefetch metadata I/O hits:', + arc_stats['prefetch_metadata_iohits']), + ('Prefetch metadata misses:', + arc_stats['prefetch_metadata_misses'])) + for title, value in pm_todo: + prt_i2(title, f_perc(value, pm_total), f_hits(value)) + print() + + all_prefetches = int(arc_stats['predictive_prefetch'])+\ + int(arc_stats['prescient_prefetch']) + prt_2('ARC predictive prefetches:', + f_perc(arc_stats['predictive_prefetch'], all_prefetches), + f_hits(arc_stats['predictive_prefetch'])) + prt_i2('Demand hits after predictive:', + f_perc(arc_stats['demand_hit_predictive_prefetch'], + arc_stats['predictive_prefetch']), + f_hits(arc_stats['demand_hit_predictive_prefetch'])) + prt_i2('Demand I/O hits after predictive:', + f_perc(arc_stats['demand_iohit_predictive_prefetch'], + arc_stats['predictive_prefetch']), + f_hits(arc_stats['demand_iohit_predictive_prefetch'])) + never = int(arc_stats['predictive_prefetch']) -\ + int(arc_stats['demand_hit_predictive_prefetch']) -\ + int(arc_stats['demand_iohit_predictive_prefetch']) + prt_i2('Never demanded after predictive:', + f_perc(never, arc_stats['predictive_prefetch']), + f_hits(never)) + print() + + prt_2('ARC prescient prefetches:', + f_perc(arc_stats['prescient_prefetch'], all_prefetches), + f_hits(arc_stats['prescient_prefetch'])) + prt_i2('Demand hits after prescient:', + f_perc(arc_stats['demand_hit_prescient_prefetch'], + arc_stats['prescient_prefetch']), + f_hits(arc_stats['demand_hit_prescient_prefetch'])) + prt_i2('Demand I/O hits after prescient:', + f_perc(arc_stats['demand_iohit_prescient_prefetch'], + arc_stats['prescient_prefetch']), + f_hits(arc_stats['demand_iohit_prescient_prefetch'])) + never = int(arc_stats['prescient_prefetch'])-\ + int(arc_stats['demand_hit_prescient_prefetch'])-\ + int(arc_stats['demand_iohit_prescient_prefetch']) + prt_i2('Never demanded after prescient:', + f_perc(never, arc_stats['prescient_prefetch']), + f_hits(never)) + print() + + print('ARC states hits of all accesses:') cl_todo = (('Most frequently used (MFU):', arc_stats['mfu_hits']), ('Most recently used (MRU):', arc_stats['mru_hits']), ('Most frequently used (MFU) ghost:', arc_stats['mfu_ghost_hits']), ('Most recently used (MRU) ghost:', - arc_stats['mru_ghost_hits'])) - + arc_stats['mru_ghost_hits']), + ('Uncached:', arc_stats['uncached_hits'])) for title, value in cl_todo: - prt_i2(title, f_perc(value, arc_stats['hits']), f_hits(value)) - - # For some reason, anon_hits can turn negative, which is weird. Until we - # have figured out why this happens, we just hide the problem, following - # the behavior of the original arc_summary. - if anon_hits >= 0: - prt_i2('Anonymously used:', - f_perc(anon_hits, arc_stats['hits']), f_hits(anon_hits)) - - print() - print('Cache hits by data type:') - dt_todo = (('Demand data:', arc_stats['demand_data_hits']), - ('Prefetch data:', arc_stats['prefetch_data_hits']), - ('Demand metadata:', arc_stats['demand_metadata_hits']), - ('Prefetch metadata:', - arc_stats['prefetch_metadata_hits'])) - - for title, value in dt_todo: - prt_i2(title, f_perc(value, arc_stats['hits']), f_hits(value)) - - print() - print('Cache misses by data type:') - dm_todo = (('Demand data:', arc_stats['demand_data_misses']), - ('Prefetch data:', - arc_stats['prefetch_data_misses']), - ('Demand metadata:', arc_stats['demand_metadata_misses']), - ('Prefetch metadata:', - arc_stats['prefetch_metadata_misses'])) - - for title, value in dm_todo: - prt_i2(title, f_perc(value, arc_stats['misses']), f_hits(value)) - + prt_i2(title, f_perc(value, all_accesses), f_hits(value)) print() @@ -708,11 +759,17 @@ def section_dmu(kstats_dict): zfetch_access_total = int(zfetch_stats['hits'])+int(zfetch_stats['misses']) - prt_1('DMU prefetch efficiency:', f_hits(zfetch_access_total)) - prt_i2('Hit ratio:', f_perc(zfetch_stats['hits'], zfetch_access_total), + prt_1('DMU predictive prefetcher calls:', f_hits(zfetch_access_total)) + prt_i2('Stream hits:', + f_perc(zfetch_stats['hits'], zfetch_access_total), f_hits(zfetch_stats['hits'])) - prt_i2('Miss ratio:', f_perc(zfetch_stats['misses'], zfetch_access_total), + prt_i2('Stream misses:', + f_perc(zfetch_stats['misses'], zfetch_access_total), f_hits(zfetch_stats['misses'])) + prt_i2('Streams limit reached:', + f_perc(zfetch_stats['max_streams'], zfetch_stats['misses']), + f_hits(zfetch_stats['max_streams'])) + prt_i1('Prefetches issued', f_hits(zfetch_stats['io_issued'])) print() diff --git a/cmd/arcstat.in b/cmd/arcstat.in index 628a6bcef..8df1c62f7 100755 --- a/cmd/arcstat.in +++ b/cmd/arcstat.in @@ -62,31 +62,64 @@ from signal import signal, SIGINT, SIGWINCH, SIG_DFL cols = { # HDR: [Size, Scale, Description] "time": [8, -1, "Time"], - "hits": [4, 1000, "ARC reads per second"], + "hits": [4, 1000, "ARC hits per second"], + "iohs": [4, 1000, "ARC I/O hits per second"], "miss": [4, 1000, "ARC misses per second"], "read": [4, 1000, "Total ARC accesses per second"], "hit%": [4, 100, "ARC hit percentage"], + "ioh%": [4, 100, "ARC I/O hit percentage"], "miss%": [5, 100, "ARC miss percentage"], "dhit": [4, 1000, "Demand hits per second"], + "dioh": [4, 1000, "Demand I/O hits per second"], "dmis": [4, 1000, "Demand misses per second"], "dh%": [3, 100, "Demand hit percentage"], + "di%": [3, 100, "Demand I/O hit percentage"], "dm%": [3, 100, "Demand miss percentage"], + "ddhit": [5, 1000, "Demand data hits per second"], + "ddioh": [5, 1000, "Demand data I/O hits per second"], + "ddmis": [5, 1000, "Demand data misses per second"], + "ddh%": [4, 100, "Demand data hit percentage"], + "ddi%": [4, 100, "Demand data I/O hit percentage"], + "ddm%": [4, 100, "Demand data miss percentage"], + "dmhit": [5, 1000, "Demand metadata hits per second"], + "dmioh": [5, 1000, "Demand metadata I/O hits per second"], + "dmmis": [5, 1000, "Demand metadata misses per second"], + "dmh%": [4, 100, "Demand metadata hit percentage"], + "dmi%": [4, 100, "Demand metadata I/O hit percentage"], + "dmm%": [4, 100, "Demand metadata miss percentage"], "phit": [4, 1000, "Prefetch hits per second"], + "pioh": [4, 1000, "Prefetch I/O hits per second"], "pmis": [4, 1000, "Prefetch misses per second"], "ph%": [3, 100, "Prefetch hits percentage"], + "pi%": [3, 100, "Prefetch I/O hits percentage"], "pm%": [3, 100, "Prefetch miss percentage"], + "pdhit": [5, 1000, "Prefetch data hits per second"], + "pdioh": [5, 1000, "Prefetch data I/O hits per second"], + "pdmis": [5, 1000, "Prefetch data misses per second"], + "pdh%": [4, 100, "Prefetch data hits percentage"], + "pdi%": [4, 100, "Prefetch data I/O hits percentage"], + "pdm%": [4, 100, "Prefetch data miss percentage"], + "pmhit": [5, 1000, "Prefetch metadata hits per second"], + "pmioh": [5, 1000, "Prefetch metadata I/O hits per second"], + "pmmis": [5, 1000, "Prefetch metadata misses per second"], + "pmh%": [4, 100, "Prefetch metadata hits percentage"], + "pmi%": [4, 100, "Prefetch metadata I/O hits percentage"], + "pmm%": [4, 100, "Prefetch metadata miss percentage"], "mhit": [4, 1000, "Metadata hits per second"], + "mioh": [4, 1000, "Metadata I/O hits per second"], "mmis": [4, 1000, "Metadata misses per second"], "mread": [5, 1000, "Metadata accesses per second"], "mh%": [3, 100, "Metadata hit percentage"], + "mi%": [3, 100, "Metadata I/O hit percentage"], "mm%": [3, 100, "Metadata miss percentage"], "arcsz": [5, 1024, "ARC size"], - "size": [4, 1024, "ARC size"], - "c": [4, 1024, "ARC target size"], + "size": [5, 1024, "ARC size"], + "c": [5, 1024, "ARC target size"], "mfu": [4, 1000, "MFU list hits per second"], "mru": [4, 1000, "MRU list hits per second"], "mfug": [4, 1000, "MFU ghost list hits per second"], "mrug": [4, 1000, "MRU ghost list hits per second"], + "unc": [4, 1000, "Uncached list hits per second"], "eskip": [5, 1000, "evict_skip per second"], "el2skip": [7, 1000, "evict skip, due to l2 writes, per second"], "el2cach": [7, 1024, "Size of L2 cached evictions per second"], @@ -96,7 +129,11 @@ cols = { "el2inel": [7, 1024, "Size of L2 ineligible evictions per second"], "mtxmis": [6, 1000, "mutex_miss per second"], "dread": [5, 1000, "Demand accesses per second"], + "ddread": [6, 1000, "Demand data accesses per second"], + "dmread": [6, 1000, "Demand metadata accesses per second"], "pread": [5, 1000, "Prefetch accesses per second"], + "pdread": [6, 1000, "Prefetch data accesses per second"], + "pmread": [6, 1000, "Prefetch metadata accesses per second"], "l2hits": [6, 1000, "L2ARC hits per second"], "l2miss": [6, 1000, "L2ARC misses per second"], "l2read": [6, 1000, "Total L2ARC accesses per second"], @@ -116,23 +153,22 @@ cols = { "l2size": [6, 1024, "Size of the L2ARC"], "l2bytes": [7, 1024, "Bytes read per second from the L2ARC"], "grow": [4, 1000, "ARC grow disabled"], - "need": [4, 1024, "ARC reclaim need"], - "free": [4, 1024, "ARC free memory"], + "need": [5, 1024, "ARC reclaim need"], + "free": [5, 1024, "ARC free memory"], "avail": [5, 1024, "ARC available memory"], "waste": [5, 1024, "Wasted memory due to round up to pagesize"], } v = {} -hdr = ["time", "read", "miss", "miss%", "dmis", "dm%", "pmis", "pm%", "mmis", - "mm%", "size", "c", "avail"] -xhdr = ["time", "mfu", "mru", "mfug", "mrug", "eskip", "mtxmis", "dread", - "pread", "read"] +hdr = ["time", "read", "ddread", "ddh%", "dmread", "dmh%", "pread", "ph%", + "size", "c", "avail"] +xhdr = ["time", "mfu", "mru", "mfug", "mrug", "unc", "eskip", "mtxmis", + "dread", "pread", "read"] sint = 1 # Default interval is 1 second count = 1 # Default count is 1 hdr_intr = 20 # Print header every 20 lines of output opfile = None sep = " " # Default separator is 2 spaces -version = "0.4" l2exist = False cmd = ("Usage: arcstat [-havxp] [-f fields] [-o file] [-s string] [interval " "[count]]\n") @@ -442,34 +478,80 @@ def calculate(): v = dict() v["time"] = time.strftime("%H:%M:%S", time.localtime()) v["hits"] = d["hits"] // sint + v["iohs"] = d["iohits"] // sint v["miss"] = d["misses"] // sint - v["read"] = v["hits"] + v["miss"] + v["read"] = v["hits"] + v["iohs"] + v["miss"] v["hit%"] = 100 * v["hits"] // v["read"] if v["read"] > 0 else 0 - v["miss%"] = 100 - v["hit%"] if v["read"] > 0 else 0 + v["ioh%"] = 100 * v["iohs"] // v["read"] if v["read"] > 0 else 0 + v["miss%"] = 100 - v["hit%"] - v["ioh%"] if v["read"] > 0 else 0 v["dhit"] = (d["demand_data_hits"] + d["demand_metadata_hits"]) // sint + v["dioh"] = (d["demand_data_iohits"] + d["demand_metadata_iohits"]) // sint v["dmis"] = (d["demand_data_misses"] + d["demand_metadata_misses"]) // sint - v["dread"] = v["dhit"] + v["dmis"] + v["dread"] = v["dhit"] + v["dioh"] + v["dmis"] v["dh%"] = 100 * v["dhit"] // v["dread"] if v["dread"] > 0 else 0 - v["dm%"] = 100 - v["dh%"] if v["dread"] > 0 else 0 + v["di%"] = 100 * v["dioh"] // v["dread"] if v["dread"] > 0 else 0 + v["dm%"] = 100 - v["dh%"] - v["di%"] if v["dread"] > 0 else 0 + + v["ddhit"] = d["demand_data_hits"] // sint + v["ddioh"] = d["demand_data_iohits"] // sint + v["ddmis"] = d["demand_data_misses"] // sint + + v["ddread"] = v["ddhit"] + v["ddioh"] + v["ddmis"] + v["ddh%"] = 100 * v["ddhit"] // v["ddread"] if v["ddread"] > 0 else 0 + v["ddi%"] = 100 * v["ddioh"] // v["ddread"] if v["ddread"] > 0 else 0 + v["ddm%"] = 100 - v["ddh%"] - v["ddi%"] if v["ddread"] > 0 else 0 + + v["dmhit"] = d["demand_metadata_hits"] // sint + v["dmioh"] = d["demand_metadata_iohits"] // sint + v["dmmis"] = d["demand_metadata_misses"] // sint + + v["dmread"] = v["dmhit"] + v["dmioh"] + v["dmmis"] + v["dmh%"] = 100 * v["dmhit"] // v["dmread"] if v["dmread"] > 0 else 0 + v["dmi%"] = 100 * v["dmioh"] // v["dmread"] if v["dmread"] > 0 else 0 + v["dmm%"] = 100 - v["dmh%"] - v["dmi%"] if v["dmread"] > 0 else 0 v["phit"] = (d["prefetch_data_hits"] + d["prefetch_metadata_hits"]) // sint + v["pioh"] = (d["prefetch_data_iohits"] + + d["prefetch_metadata_iohits"]) // sint v["pmis"] = (d["prefetch_data_misses"] + d["prefetch_metadata_misses"]) // sint - v["pread"] = v["phit"] + v["pmis"] + v["pread"] = v["phit"] + v["pioh"] + v["pmis"] v["ph%"] = 100 * v["phit"] // v["pread"] if v["pread"] > 0 else 0 - v["pm%"] = 100 - v["ph%"] if v["pread"] > 0 else 0 + v["pi%"] = 100 * v["pioh"] // v["pread"] if v["pread"] > 0 else 0 + v["pm%"] = 100 - v["ph%"] - v["pi%"] if v["pread"] > 0 else 0 + + v["pdhit"] = d["prefetch_data_hits"] // sint + v["pdioh"] = d["prefetch_data_iohits"] // sint + v["pdmis"] = d["prefetch_data_misses"] // sint + + v["pdread"] = v["pdhit"] + v["pdioh"] + v["pdmis"] + v["pdh%"] = 100 * v["pdhit"] // v["pdread"] if v["pdread"] > 0 else 0 + v["pdi%"] = 100 * v["pdioh"] // v["pdread"] if v["pdread"] > 0 else 0 + v["pdm%"] = 100 - v["pdh%"] - v["pdi%"] if v["pdread"] > 0 else 0 + + v["pmhit"] = d["prefetch_metadata_hits"] // sint + v["pmioh"] = d["prefetch_metadata_iohits"] // sint + v["pmmis"] = d["prefetch_metadata_misses"] // sint + + v["pmread"] = v["pmhit"] + v["pmioh"] + v["pmmis"] + v["pmh%"] = 100 * v["pmhit"] // v["pmread"] if v["pmread"] > 0 else 0 + v["pmi%"] = 100 * v["pmioh"] // v["pmread"] if v["pmread"] > 0 else 0 + v["pmm%"] = 100 - v["pmh%"] - v["pmi%"] if v["pmread"] > 0 else 0 v["mhit"] = (d["prefetch_metadata_hits"] + d["demand_metadata_hits"]) // sint + v["mioh"] = (d["prefetch_metadata_iohits"] + + d["demand_metadata_iohits"]) // sint v["mmis"] = (d["prefetch_metadata_misses"] + d["demand_metadata_misses"]) // sint - v["mread"] = v["mhit"] + v["mmis"] + v["mread"] = v["mhit"] + v["mioh"] + v["mmis"] v["mh%"] = 100 * v["mhit"] // v["mread"] if v["mread"] > 0 else 0 - v["mm%"] = 100 - v["mh%"] if v["mread"] > 0 else 0 + v["mi%"] = 100 * v["mioh"] // v["mread"] if v["mread"] > 0 else 0 + v["mm%"] = 100 - v["mh%"] - v["mi%"] if v["mread"] > 0 else 0 v["arcsz"] = cur["size"] v["size"] = cur["size"] @@ -478,6 +560,7 @@ def calculate(): v["mru"] = d["mru_hits"] // sint v["mrug"] = d["mru_ghost_hits"] // sint v["mfug"] = d["mfu_ghost_hits"] // sint + v["unc"] = d["uncached_hits"] // sint v["eskip"] = d["evict_skip"] // sint v["el2skip"] = d["evict_l2_skip"] // sint v["el2cach"] = d["evict_l2_cached"] // sint diff --git a/man/man1/arcstat.1 b/man/man1/arcstat.1 index 7c2caf698..82358fa68 100644 --- a/man/man1/arcstat.1 +++ b/man/man1/arcstat.1 @@ -12,7 +12,7 @@ .\" Copyright (c) 2015 by Delphix. All rights reserved. .\" Copyright (c) 2020 by AJ Jordan. All rights reserved. .\" -.Dd May 26, 2021 +.Dd December 23, 2022 .Dt ARCSTAT 1 .Os . @@ -35,33 +35,83 @@ prints various ZFS ARC and L2ARC statistics in vmstat-like fashion: .It Sy c ARC target size .It Sy dh% -Demand data hit percentage +Demand hit percentage +.It Sy di% +Demand I/O hit percentage .It Sy dm% +Demand miss percentage +.It Sy ddh% +Demand data hit percentage +.It Sy ddi% +Demand data I/O hit percentage +.It Sy ddm% Demand data miss percentage +.It Sy dmh% +Demand metadata hit percentage +.It Sy dmi% +Demand metadata I/O hit percentage +.It Sy dmm% +Demand metadata miss percentage .It Sy mfu MFU list hits per second .It Sy mh% Metadata hit percentage +.It Sy mi% +Metadata I/O hit percentage .It Sy mm% Metadata miss percentage .It Sy mru MRU list hits per second .It Sy ph% Prefetch hits percentage +.It Sy pi% +Prefetch I/O hits percentage .It Sy pm% Prefetch miss percentage +.It Sy pdh% +Prefetch data hits percentage +.It Sy pdi% +Prefetch data I/O hits percentage +.It Sy pdm% +Prefetch data miss percentage +.It Sy pmh% +Prefetch metadata hits percentage +.It Sy pmi% +Prefetch metadata I/O hits percentage +.It Sy pmm% +Prefetch metadata miss percentage .It Sy dhit -Demand data hits per second +Demand hits per second +.It Sy dioh +Demand I/O hits per second .It Sy dmis +Demand misses per second +.It Sy ddhit +Demand data hits per second +.It Sy ddioh +Demand data I/O hits per second +.It Sy ddmis Demand data misses per second +.It Sy dmhit +Demand metadata hits per second +.It Sy dmioh +Demand metadata I/O hits per second +.It Sy dmmis +Demand metadata misses per second .It Sy hit% ARC hit percentage .It Sy hits -ARC reads per second +ARC hits per second +.It Sy ioh% +ARC I/O hits percentage +.It Sy iohs +ARC I/O hits per second .It Sy mfug MFU ghost list hits per second .It Sy mhit Metadata hits per second +.It Sy mioh +Metadata I/O hits per second .It Sy miss ARC misses per second .It Sy mmis @@ -70,8 +120,22 @@ Metadata misses per second MRU ghost list hits per second .It Sy phit Prefetch hits per second +.It Sy pioh +Prefetch I/O hits per second .It Sy pmis Prefetch misses per second +.It Sy pdhit +Prefetch data hits per second +.It Sy pdioh +Prefetch data I/O hits per second +.It Sy pdmis +Prefetch data misses per second +.It Sy pmhit +Prefetch metadata hits per second +.It Sy pmioh +Prefetch metadata I/O hits per second +.It Sy pmmis +Prefetch metadata misses per second .It Sy read Total ARC accesses per second .It Sy time @@ -81,8 +145,14 @@ ARC size .It Sy arcsz Alias for .Sy size +.It Sy unc +Uncached list hits per second .It Sy dread +Demand accesses per second +.It Sy ddread Demand data accesses per second +.It Sy dmread +Demand metadata accesses per second .It Sy eskip evict_skip per second .It Sy miss% @@ -91,6 +161,10 @@ ARC miss percentage Metadata accesses per second .It Sy pread Prefetch accesses per second +.It Sy pdread +Prefetch data accesses per second +.It Sy pmread +Prefetch metadata accesses per second .It Sy l2hit% L2ARC access hit percentage .It Sy l2hits