diff --git a/cmd/arc_summary b/cmd/arc_summary index 2d0bfddd9..c24d400fa 100755 --- a/cmd/arc_summary +++ b/cmd/arc_summary @@ -566,7 +566,7 @@ def section_arc(kstats_dict): l2_hdr_size = arc_stats['l2_hdr_size'] abd_chunk_waste_size = arc_stats['abd_chunk_waste_size'] - prt_1('ARC structal breakdown (current size):', f_bytes(arc_size)) + prt_1('ARC structural breakdown (current size):', f_bytes(arc_size)) prt_i2('Compressed size:', f_perc(compressed_size, arc_size), f_bytes(compressed_size)) prt_i2('Overhead size:', diff --git a/cmd/arcstat.in b/cmd/arcstat.in index c4f10a1d6..5016e16d0 100755 --- a/cmd/arcstat.in +++ b/cmd/arcstat.in @@ -152,6 +152,7 @@ cols = { "l2asize": [7, 1024, "Actual (compressed) size of the L2ARC"], "l2size": [6, 1024, "Size of the L2ARC"], "l2bytes": [7, 1024, "Bytes read per second from the L2ARC"], + "l2wbytes": [8, 1024, "Bytes written per second to the L2ARC"], "grow": [4, 1000, "ARC grow disabled"], "need": [5, 1024, "ARC reclaim need"], "free": [5, 1024, "ARC free memory"], @@ -169,6 +170,83 @@ cols = { "zactive": [7, 1000, "zfetch prefetches active per second"], } +# ARC structural breakdown from arc_summary +structfields = { + "cmp": ["compressed", "Compressed"], + "ovh": ["overhead", "Overhead"], + "bon": ["bonus", "Bonus"], + "dno": ["dnode", "Dnode"], + "dbu": ["dbuf", "Dbuf"], + "hdr": ["hdr", "Header"], + "l2h": ["l2_hdr", "L2 header"], + "abd": ["abd_chunk_waste", "ABD chunk waste"], +} +structstats = { # size stats + "percent": "size", # percentage of this value + "sz": ["_size", "size"], +} + +# ARC types breakdown from arc_summary +typefields = { + "data": ["data", "ARC data"], + "meta": ["metadata", "ARC metadata"], +} +typestats = { # size stats + "percent": "cachessz", # percentage of this value + "tg": ["_target", "target"], + "sz": ["_size", "size"], +} + +# ARC states breakdown from arc_summary +statefields = { + "ano": ["anon", "Anonymous"], + "mfu": ["mfu", "MFU"], + "mru": ["mru", "MRU"], + "unc": ["uncached", "Uncached"], +} +targetstats = { + "percent": "cachessz", # percentage of this value + "fields": ["mfu", "mru"], # only applicable to these fields + "tg": ["_target", "target"], + "dt": ["_data_target", "data target"], + "mt": ["_metadata_target", "metadata target"], +} +statestats = { # size stats + "percent": "cachessz", # percentage of this value + "sz": ["_size", "size"], + "da": ["_data", "data size"], + "me": ["_metadata", "metadata size"], + "ed": ["_evictable_data", "evictable data size"], + "em": ["_evictable_metadata", "evictable metadata size"], +} +ghoststats = { + "fields": ["mfu", "mru"], # only applicable to these fields + "gsz": ["_ghost_size", "ghost size"], + "gd": ["_ghost_data", "ghost data size"], + "gm": ["_ghost_metadata", "ghost metadata size"], +} + +# fields and stats +fieldstats = [ + [structfields, structstats], + [typefields, typestats], + [statefields, targetstats, statestats, ghoststats], +] +for fs in fieldstats: + fields, stats = fs[0], fs[1:] + for field, fieldval in fields.items(): + for group in stats: + for stat, statval in group.items(): + if stat in ["fields", "percent"] or \ + ("fields" in group and field not in group["fields"]): + continue + colname = field + stat + coldesc = fieldval[1] + " " + statval[1] + cols[colname] = [len(colname), 1024, coldesc] + if "percent" in group: + cols[colname + "%"] = [len(colname) + 1, 100, \ + coldesc + " percentage"] + v = {} hdr = ["time", "read", "ddread", "ddh%", "dmread", "dmh%", "pread", "ph%", "size", "c", "avail"] @@ -286,6 +364,29 @@ def snap_stats(): kstat_update() cur = kstat + + # fill in additional values from arc_summary + cur["caches_size"] = caches_size = cur["anon_data"]+cur["anon_metadata"]+\ + cur["mfu_data"]+cur["mfu_metadata"]+cur["mru_data"]+cur["mru_metadata"]+\ + cur["uncached_data"]+cur["uncached_metadata"] + s = 4294967296 + pd = cur["pd"] + pm = cur["pm"] + meta = cur["meta"] + v = (s-int(pd))*(s-int(meta))/s + cur["mfu_data_target"] = v / 65536 * caches_size / 65536 + v = (s-int(pm))*int(meta)/s + cur["mfu_metadata_target"] = v / 65536 * caches_size / 65536 + v = int(pd)*(s-int(meta))/s + cur["mru_data_target"] = v / 65536 * caches_size / 65536 + v = int(pm)*int(meta)/s + cur["mru_metadata_target"] = v / 65536 * caches_size / 65536 + + cur["data_target"] = cur["mfu_data_target"] + cur["mru_data_target"] + cur["metadata_target"] = cur["mfu_metadata_target"] + cur["mru_metadata_target"] + cur["mfu_target"] = cur["mfu_data_target"] + cur["mfu_metadata_target"] + cur["mru_target"] = cur["mru_data_target"] + cur["mru_metadata_target"] + for key in cur: if re.match(key, "class"): continue @@ -295,31 +396,34 @@ def snap_stats(): d[key] = cur[key] +def isint(num): + if isinstance(num, float): + return num.is_integer() + if isinstance(num, int): + return True + return False + + def prettynum(sz, scale, num=0): - suffix = [' ', 'K', 'M', 'G', 'T', 'P', 'E', 'Z'] + suffix = ['', 'K', 'M', 'G', 'T', 'P', 'E', 'Z'] index = 0 - save = 0 # Special case for date field if scale == -1: return "%s" % num - # Rounding error, return 0 - elif 0 < num < 1: - num = 0 + if scale != 100: + while abs(num) > scale and index < 5: + num = num / scale + index += 1 - while abs(num) > scale and index < 5: - save = num - num = num / scale - index += 1 - - if index == 0: - return "%*d" % (sz, num) - - if abs(save / scale) < 10: - return "%*.1f%s" % (sz - 1, num, suffix[index]) + width = sz - (0 if index == 0 else 1) + intlen = len("%.0f" % num) # %.0f rounds to nearest int + if sint == 1 and isint(num) or width < intlen + 2: + decimal = 0 else: - return "%*d%s" % (sz - 1, num, suffix[index]) + decimal = 1 + return "%*.*f%s" % (width, decimal, num, suffix[index]) def print_values(): @@ -509,131 +613,148 @@ 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["hits"] = d["hits"] / sint + v["iohs"] = d["iohits"] / sint + v["miss"] = d["misses"] / sint v["read"] = v["hits"] + v["iohs"] + v["miss"] - v["hit%"] = 100 * v["hits"] // v["read"] if v["read"] > 0 else 0 - v["ioh%"] = 100 * v["iohs"] // v["read"] if v["read"] > 0 else 0 + v["hit%"] = 100 * v["hits"] / v["read"] 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["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["dioh"] + v["dmis"] - v["dh%"] = 100 * v["dhit"] // v["dread"] if v["dread"] > 0 else 0 - v["di%"] = 100 * v["dioh"] // v["dread"] if v["dread"] > 0 else 0 + v["dh%"] = 100 * v["dhit"] / v["dread"] 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["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["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["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["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["phit"] = (d["prefetch_data_hits"] + d["prefetch_metadata_hits"]) / sint v["pioh"] = (d["prefetch_data_iohits"] + - d["prefetch_metadata_iohits"]) // sint + d["prefetch_metadata_iohits"]) / sint v["pmis"] = (d["prefetch_data_misses"] + - d["prefetch_metadata_misses"]) // sint + d["prefetch_metadata_misses"]) / sint v["pread"] = v["phit"] + v["pioh"] + v["pmis"] - v["ph%"] = 100 * v["phit"] // v["pread"] if v["pread"] > 0 else 0 - v["pi%"] = 100 * v["pioh"] // v["pread"] if v["pread"] > 0 else 0 + v["ph%"] = 100 * v["phit"] / v["pread"] 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["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["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["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["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 + d["demand_metadata_hits"]) / sint v["mioh"] = (d["prefetch_metadata_iohits"] + - d["demand_metadata_iohits"]) // sint + d["demand_metadata_iohits"]) / sint v["mmis"] = (d["prefetch_metadata_misses"] + - d["demand_metadata_misses"]) // sint + d["demand_metadata_misses"]) / sint v["mread"] = v["mhit"] + v["mioh"] + v["mmis"] - v["mh%"] = 100 * v["mhit"] // v["mread"] if v["mread"] > 0 else 0 - v["mi%"] = 100 * v["mioh"] // v["mread"] if v["mread"] > 0 else 0 + v["mh%"] = 100 * v["mhit"] / v["mread"] 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"] v["c"] = cur["c"] - v["mfu"] = d["mfu_hits"] // sint - 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 - v["el2el"] = d["evict_l2_eligible"] // sint - v["el2mfu"] = d["evict_l2_eligible_mfu"] // sint - v["el2mru"] = d["evict_l2_eligible_mru"] // sint - v["el2inel"] = d["evict_l2_ineligible"] // sint - v["mtxmis"] = d["mutex_miss"] // sint + v["mfu"] = d["mfu_hits"] / sint + 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 + v["el2el"] = d["evict_l2_eligible"] / sint + v["el2mfu"] = d["evict_l2_eligible_mfu"] / sint + v["el2mru"] = d["evict_l2_eligible_mru"] / sint + v["el2inel"] = d["evict_l2_ineligible"] / sint + v["mtxmis"] = d["mutex_miss"] / sint v["ztotal"] = (d["zfetch_hits"] + d["zfetch_future"] + d["zfetch_stride"] + - d["zfetch_past"] + d["zfetch_misses"]) // sint - v["zhits"] = d["zfetch_hits"] // sint - v["zahead"] = (d["zfetch_future"] + d["zfetch_stride"]) // sint - v["zpast"] = d["zfetch_past"] // sint - v["zmisses"] = d["zfetch_misses"] // sint - v["zmax"] = d["zfetch_max_streams"] // sint - v["zfuture"] = d["zfetch_future"] // sint - v["zstride"] = d["zfetch_stride"] // sint - v["zissued"] = d["zfetch_io_issued"] // sint - v["zactive"] = d["zfetch_io_active"] // sint + d["zfetch_past"] + d["zfetch_misses"]) / sint + v["zhits"] = d["zfetch_hits"] / sint + v["zahead"] = (d["zfetch_future"] + d["zfetch_stride"]) / sint + v["zpast"] = d["zfetch_past"] / sint + v["zmisses"] = d["zfetch_misses"] / sint + v["zmax"] = d["zfetch_max_streams"] / sint + v["zfuture"] = d["zfetch_future"] / sint + v["zstride"] = d["zfetch_stride"] / sint + v["zissued"] = d["zfetch_io_issued"] / sint + v["zactive"] = d["zfetch_io_active"] / sint + + # ARC structural breakdown, ARC types breakdown, ARC states breakdown + v["cachessz"] = cur["caches_size"] + for fs in fieldstats: + fields, stats = fs[0], fs[1:] + for field, fieldval in fields.items(): + for group in stats: + for stat, statval in group.items(): + if stat in ["fields", "percent"] or \ + ("fields" in group and field not in group["fields"]): + continue + colname = field + stat + v[colname] = cur[fieldval[0] + statval[0]] + if "percent" in group: + v[colname + "%"] = 100 * v[colname] / \ + v[group["percent"]] if v[group["percent"]] > 0 else 0 if l2exist: - v["l2hits"] = d["l2_hits"] // sint - v["l2miss"] = d["l2_misses"] // sint + v["l2hits"] = d["l2_hits"] / sint + v["l2miss"] = d["l2_misses"] / sint v["l2read"] = v["l2hits"] + v["l2miss"] - v["l2hit%"] = 100 * v["l2hits"] // v["l2read"] if v["l2read"] > 0 else 0 + v["l2hit%"] = 100 * v["l2hits"] / v["l2read"] if v["l2read"] > 0 else 0 v["l2miss%"] = 100 - v["l2hit%"] if v["l2read"] > 0 else 0 v["l2asize"] = cur["l2_asize"] v["l2size"] = cur["l2_size"] - v["l2bytes"] = d["l2_read_bytes"] // sint + v["l2bytes"] = d["l2_read_bytes"] / sint + v["l2wbytes"] = d["l2_write_bytes"] / sint v["l2pref"] = cur["l2_prefetch_asize"] v["l2mfu"] = cur["l2_mfu_asize"] v["l2mru"] = cur["l2_mru_asize"] v["l2data"] = cur["l2_bufc_data_asize"] v["l2meta"] = cur["l2_bufc_metadata_asize"] - v["l2pref%"] = 100 * v["l2pref"] // v["l2asize"] - v["l2mfu%"] = 100 * v["l2mfu"] // v["l2asize"] - v["l2mru%"] = 100 * v["l2mru"] // v["l2asize"] - v["l2data%"] = 100 * v["l2data"] // v["l2asize"] - v["l2meta%"] = 100 * v["l2meta"] // v["l2asize"] + v["l2pref%"] = 100 * v["l2pref"] / v["l2asize"] + v["l2mfu%"] = 100 * v["l2mfu"] / v["l2asize"] + v["l2mru%"] = 100 * v["l2mru"] / v["l2asize"] + v["l2data%"] = 100 * v["l2data"] / v["l2asize"] + v["l2meta%"] = 100 * v["l2meta"] / v["l2asize"] v["grow"] = 0 if cur["arc_no_grow"] else 1 v["need"] = cur["arc_need_free"] diff --git a/man/man1/arcstat.1 b/man/man1/arcstat.1 index 82358fa68..019a82702 100644 --- a/man/man1/arcstat.1 +++ b/man/man1/arcstat.1 @@ -199,10 +199,176 @@ Size of the L2ARC mutex_miss per second .It Sy l2bytes Bytes read per second from the L2ARC +.It Sy l2wbytes +Bytes written per second to the L2ARC .It Sy l2miss% L2ARC access miss percentage .It Sy l2asize Actual (compressed) size of the L2ARC +.It Sy cmpsz +Compressed size +.It Sy cmpsz% +Compressed size percentage +.It Sy ovhsz +Overhead size +.It Sy ovhsz% +Overhead size percentage +.It Sy bonsz +Bonus size +.It Sy bonsz% +Bonus size percentage +.It Sy dnosz +Dnode size +.It Sy dnosz% +Dnode size percentage +.It Sy dbusz +Dbuf size +.It Sy dbusz% +Dbuf size percentage +.It Sy hdrsz +Header size +.It Sy hdrsz% +Header size percentage +.It Sy l2hsz +L2 header size +.It Sy l2hsz% +L2 header size percentage +.It Sy abdsz +ABD chunk waste size +.It Sy abdsz% +ABD chunk waste size percentage +.It Sy datatg +ARC data target +.It Sy datatg% +ARC data target percentage +.It Sy datasz +ARC data size +.It Sy datasz% +ARC data size percentage +.It Sy metatg +ARC metadata target +.It Sy metatg% +ARC metadata target percentage +.It Sy metasz +ARC metadata size +.It Sy metasz% +ARC metadata size percentage +.It Sy anosz +Anonymous size +.It Sy anosz% +Anonymous size percentage +.It Sy anoda +Anonymous data size +.It Sy anoda% +Anonymous data size percentage +.It Sy anome +Anonymous metadata size +.It Sy anome% +Anonymous metadata size percentage +.It Sy anoed +Anonymous evictable data size +.It Sy anoed% +Anonymous evictable data size percentage +.It Sy anoem +Anonymous evictable metadata size +.It Sy anoem% +Anonymous evictable metadata size percentage +.It Sy mfutg +MFU target +.It Sy mfutg% +MFU target percentage +.It Sy mfudt +MFU data target +.It Sy mfudt% +MFU data target percentage +.It Sy mfumt +MFU metadata target +.It Sy mfumt% +MFU metadata target percentage +.It Sy mfusz +MFU size +.It Sy mfusz% +MFU size percentage +.It Sy mfuda +MFU data size +.It Sy mfuda% +MFU data size percentage +.It Sy mfume +MFU metadata size +.It Sy mfume% +MFU metadata size percentage +.It Sy mfued +MFU evictable data size +.It Sy mfued% +MFU evictable data size percentage +.It Sy mfuem +MFU evictable metadata size +.It Sy mfuem% +MFU evictable metadata size percentage +.It Sy mfugsz +MFU ghost size +.It Sy mfugd +MFU ghost data size +.It Sy mfugm +MFU ghost metadata size +.It Sy mrutg +MRU target +.It Sy mrutg% +MRU target percentage +.It Sy mrudt +MRU data target +.It Sy mrudt% +MRU data target percentage +.It Sy mrumt +MRU metadata target +.It Sy mrumt% +MRU metadata target percentage +.It Sy mrusz +MRU size +.It Sy mrusz% +MRU size percentage +.It Sy mruda +MRU data size +.It Sy mruda% +MRU data size percentage +.It Sy mrume +MRU metadata size +.It Sy mrume% +MRU metadata size percentage +.It Sy mrued +MRU evictable data size +.It Sy mrued% +MRU evictable data size percentage +.It Sy mruem +MRU evictable metadata size +.It Sy mruem% +MRU evictable metadata size percentage +.It Sy mrugsz +MRU ghost size +.It Sy mrugd +MRU ghost data size +.It Sy mrugm +MRU ghost metadata size +.It Sy uncsz +Uncached size +.It Sy uncsz% +Uncached size percentage +.It Sy uncda +Uncached data size +.It Sy uncda% +Uncached data size percentage +.It Sy uncme +Uncached metadata size +.It Sy uncme% +Uncached metadata size percentage +.It Sy unced +Uncached evictable data size +.It Sy unced% +Uncached evictable data size percentage +.It Sy uncem +Uncached evictable metadata size +.It Sy uncem% +Uncached evictable metadata size percentage .It Sy grow ARC grow disabled .It Sy need