1#!/usr/bin/env @PYTHON_SHEBANG@ 2# SPDX-License-Identifier: CDDL-1.0 3# 4# Print out ZFS ARC Statistics exported via kstat(1) 5# For a definition of fields, or usage, use arcstat -v 6# 7# This script was originally a fork of the original arcstat.pl (0.1) 8# by Neelakanth Nadgir, originally published on his Sun blog on 9# 09/18/2007 10# http://blogs.sun.com/realneel/entry/zfs_arc_statistics 11# 12# A new version aimed to improve upon the original by adding features 13# and fixing bugs as needed. This version was maintained by Mike 14# Harsch and was hosted in a public open source repository: 15# http://github.com/mharsch/arcstat 16# 17# but has since moved to the illumos-gate repository. 18# 19# This Python port was written by John Hixson for FreeNAS, introduced 20# in commit e2c29f: 21# https://github.com/freenas/freenas 22# 23# and has been improved by many people since. 24# 25# CDDL HEADER START 26# 27# The contents of this file are subject to the terms of the 28# Common Development and Distribution License, Version 1.0 only 29# (the "License"). You may not use this file except in compliance 30# with the License. 31# 32# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 33# or https://opensource.org/licenses/CDDL-1.0. 34# See the License for the specific language governing permissions 35# and limitations under the License. 36# 37# When distributing Covered Code, include this CDDL HEADER in each 38# file and include the License file at usr/src/OPENSOLARIS.LICENSE. 39# If applicable, add the following below this CDDL HEADER, with the 40# fields enclosed by brackets "[]" replaced with your own identifying 41# information: Portions Copyright [yyyy] [name of copyright owner] 42# 43# CDDL HEADER END 44# 45# 46# Fields have a fixed width. Every interval, we fill the "v" 47# hash with its corresponding value (v[field]=value) using calculate(). 48# @hdr is the array of fields that needs to be printed, so we 49# just iterate over this array and print the values using our pretty printer. 50# 51# This script must remain compatible with Python 3.6+. 52# 53 54import sys 55import time 56import getopt 57import re 58import copy 59 60from signal import signal, SIGINT, SIGWINCH, SIG_DFL 61 62 63cols = { 64 # HDR: [Size, Scale, Description] 65 "time": [8, -1, "Time"], 66 "hits": [4, 1000, "ARC hits per second"], 67 "iohs": [4, 1000, "ARC I/O hits per second"], 68 "miss": [4, 1000, "ARC misses per second"], 69 "read": [4, 1000, "Total ARC accesses per second"], 70 "hit%": [4, 100, "ARC hit percentage"], 71 "ioh%": [4, 100, "ARC I/O hit percentage"], 72 "miss%": [5, 100, "ARC miss percentage"], 73 "dhit": [4, 1000, "Demand hits per second"], 74 "dioh": [4, 1000, "Demand I/O hits per second"], 75 "dmis": [4, 1000, "Demand misses per second"], 76 "dh%": [3, 100, "Demand hit percentage"], 77 "di%": [3, 100, "Demand I/O hit percentage"], 78 "dm%": [3, 100, "Demand miss percentage"], 79 "ddhit": [5, 1000, "Demand data hits per second"], 80 "ddioh": [5, 1000, "Demand data I/O hits per second"], 81 "ddmis": [5, 1000, "Demand data misses per second"], 82 "ddh%": [4, 100, "Demand data hit percentage"], 83 "ddi%": [4, 100, "Demand data I/O hit percentage"], 84 "ddm%": [4, 100, "Demand data miss percentage"], 85 "dmhit": [5, 1000, "Demand metadata hits per second"], 86 "dmioh": [5, 1000, "Demand metadata I/O hits per second"], 87 "dmmis": [5, 1000, "Demand metadata misses per second"], 88 "dmh%": [4, 100, "Demand metadata hit percentage"], 89 "dmi%": [4, 100, "Demand metadata I/O hit percentage"], 90 "dmm%": [4, 100, "Demand metadata miss percentage"], 91 "phit": [4, 1000, "Prefetch hits per second"], 92 "pioh": [4, 1000, "Prefetch I/O hits per second"], 93 "pmis": [4, 1000, "Prefetch misses per second"], 94 "ph%": [3, 100, "Prefetch hits percentage"], 95 "pi%": [3, 100, "Prefetch I/O hits percentage"], 96 "pm%": [3, 100, "Prefetch miss percentage"], 97 "pdhit": [5, 1000, "Prefetch data hits per second"], 98 "pdioh": [5, 1000, "Prefetch data I/O hits per second"], 99 "pdmis": [5, 1000, "Prefetch data misses per second"], 100 "pdh%": [4, 100, "Prefetch data hits percentage"], 101 "pdi%": [4, 100, "Prefetch data I/O hits percentage"], 102 "pdm%": [4, 100, "Prefetch data miss percentage"], 103 "pmhit": [5, 1000, "Prefetch metadata hits per second"], 104 "pmioh": [5, 1000, "Prefetch metadata I/O hits per second"], 105 "pmmis": [5, 1000, "Prefetch metadata misses per second"], 106 "pmh%": [4, 100, "Prefetch metadata hits percentage"], 107 "pmi%": [4, 100, "Prefetch metadata I/O hits percentage"], 108 "pmm%": [4, 100, "Prefetch metadata miss percentage"], 109 "mhit": [4, 1000, "Metadata hits per second"], 110 "mioh": [4, 1000, "Metadata I/O hits per second"], 111 "mmis": [4, 1000, "Metadata misses per second"], 112 "mread": [5, 1000, "Metadata accesses per second"], 113 "mh%": [3, 100, "Metadata hit percentage"], 114 "mi%": [3, 100, "Metadata I/O hit percentage"], 115 "mm%": [3, 100, "Metadata miss percentage"], 116 "arcsz": [5, 1024, "ARC size"], 117 "size": [5, 1024, "ARC size"], 118 "c": [5, 1024, "ARC target size"], 119 "mfu": [4, 1000, "MFU list hits per second"], 120 "mru": [4, 1000, "MRU list hits per second"], 121 "mfug": [4, 1000, "MFU ghost list hits per second"], 122 "mrug": [4, 1000, "MRU ghost list hits per second"], 123 "unc": [4, 1000, "Uncached list hits per second"], 124 "eskip": [5, 1000, "evict_skip per second"], 125 "el2skip": [7, 1000, "evict skip, due to l2 writes, per second"], 126 "el2cach": [7, 1024, "Size of L2 cached evictions per second"], 127 "el2el": [5, 1024, "Size of L2 eligible evictions per second"], 128 "el2mfu": [6, 1024, "Size of L2 eligible MFU evictions per second"], 129 "el2mru": [6, 1024, "Size of L2 eligible MRU evictions per second"], 130 "el2inel": [7, 1024, "Size of L2 ineligible evictions per second"], 131 "mtxmis": [6, 1000, "mutex_miss per second"], 132 "dread": [5, 1000, "Demand accesses per second"], 133 "ddread": [6, 1000, "Demand data accesses per second"], 134 "dmread": [6, 1000, "Demand metadata accesses per second"], 135 "pread": [5, 1000, "Prefetch accesses per second"], 136 "pdread": [6, 1000, "Prefetch data accesses per second"], 137 "pmread": [6, 1000, "Prefetch metadata accesses per second"], 138 "l2hits": [6, 1000, "L2ARC hits per second"], 139 "l2miss": [6, 1000, "L2ARC misses per second"], 140 "l2read": [6, 1000, "Total L2ARC accesses per second"], 141 "l2hit%": [6, 100, "L2ARC access hit percentage"], 142 "l2miss%": [7, 100, "L2ARC access miss percentage"], 143 "l2pref": [6, 1024, "L2ARC prefetch allocated size"], 144 "l2mfu": [5, 1024, "L2ARC MFU allocated size"], 145 "l2mru": [5, 1024, "L2ARC MRU allocated size"], 146 "l2data": [6, 1024, "L2ARC data allocated size"], 147 "l2meta": [6, 1024, "L2ARC metadata allocated size"], 148 "l2pref%": [7, 100, "L2ARC prefetch percentage"], 149 "l2mfu%": [6, 100, "L2ARC MFU percentage"], 150 "l2mru%": [6, 100, "L2ARC MRU percentage"], 151 "l2data%": [7, 100, "L2ARC data percentage"], 152 "l2meta%": [7, 100, "L2ARC metadata percentage"], 153 "l2asize": [7, 1024, "Actual (compressed) size of the L2ARC"], 154 "l2size": [6, 1024, "Size of the L2ARC"], 155 "l2bytes": [7, 1024, "Bytes read per second from the L2ARC"], 156 "l2wbytes": [8, 1024, "Bytes written per second to the L2ARC"], 157 "grow": [4, 1000, "ARC grow disabled"], 158 "need": [5, 1024, "ARC reclaim need"], 159 "free": [5, 1024, "ARC free memory"], 160 "avail": [5, 1024, "ARC available memory"], 161 "waste": [5, 1024, "Wasted memory due to round up to pagesize"], 162 "ztotal": [6, 1000, "zfetch total prefetcher calls per second"], 163 "zhits": [5, 1000, "zfetch stream hits per second"], 164 "zahead": [6, 1000, "zfetch hits ahead of streams per second"], 165 "zpast": [5, 1000, "zfetch hits behind streams per second"], 166 "zmisses": [7, 1000, "zfetch stream misses per second"], 167 "zmax": [4, 1000, "zfetch limit reached per second"], 168 "zfuture": [7, 1000, "zfetch stream future per second"], 169 "zstride": [7, 1000, "zfetch stream strides per second"], 170 "zissued": [7, 1000, "zfetch prefetches issued per second"], 171 "zactive": [7, 1000, "zfetch prefetches active per second"], 172} 173 174# ARC structural breakdown from arc_summary 175structfields = { 176 "cmp": ["compressed", "Compressed"], 177 "ovh": ["overhead", "Overhead"], 178 "bon": ["bonus", "Bonus"], 179 "dno": ["dnode", "Dnode"], 180 "dbu": ["dbuf", "Dbuf"], 181 "hdr": ["hdr", "Header"], 182 "l2h": ["l2_hdr", "L2 header"], 183 "abd": ["abd_chunk_waste", "ABD chunk waste"], 184} 185structstats = { # size stats 186 "percent": "size", # percentage of this value 187 "sz": ["_size", "size"], 188} 189 190# ARC types breakdown from arc_summary 191typefields = { 192 "data": ["data", "ARC data"], 193 "meta": ["metadata", "ARC metadata"], 194} 195typestats = { # size stats 196 "percent": "cachessz", # percentage of this value 197 "tg": ["_target", "target"], 198 "sz": ["_size", "size"], 199} 200 201# ARC states breakdown from arc_summary 202statefields = { 203 "ano": ["anon", "Anonymous"], 204 "mfu": ["mfu", "MFU"], 205 "mru": ["mru", "MRU"], 206 "unc": ["uncached", "Uncached"], 207} 208targetstats = { 209 "percent": "cachessz", # percentage of this value 210 "fields": ["mfu", "mru"], # only applicable to these fields 211 "tg": ["_target", "target"], 212 "dt": ["_data_target", "data target"], 213 "mt": ["_metadata_target", "metadata target"], 214} 215statestats = { # size stats 216 "percent": "cachessz", # percentage of this value 217 "sz": ["_size", "size"], 218 "da": ["_data", "data size"], 219 "me": ["_metadata", "metadata size"], 220 "ed": ["_evictable_data", "evictable data size"], 221 "em": ["_evictable_metadata", "evictable metadata size"], 222} 223ghoststats = { 224 "fields": ["mfu", "mru"], # only applicable to these fields 225 "gsz": ["_ghost_size", "ghost size"], 226 "gd": ["_ghost_data", "ghost data size"], 227 "gm": ["_ghost_metadata", "ghost metadata size"], 228} 229 230# fields and stats 231fieldstats = [ 232 [structfields, structstats], 233 [typefields, typestats], 234 [statefields, targetstats, statestats, ghoststats], 235] 236for fs in fieldstats: 237 fields, stats = fs[0], fs[1:] 238 for field, fieldval in fields.items(): 239 for group in stats: 240 for stat, statval in group.items(): 241 if stat in ["fields", "percent"] or \ 242 ("fields" in group and field not in group["fields"]): 243 continue 244 colname = field + stat 245 coldesc = fieldval[1] + " " + statval[1] 246 cols[colname] = [len(colname), 1024, coldesc] 247 if "percent" in group: 248 cols[colname + "%"] = [len(colname) + 1, 100, \ 249 coldesc + " percentage"] 250 251v = {} 252hdr = ["time", "read", "ddread", "ddh%", "dmread", "dmh%", "pread", "ph%", 253 "size", "c", "avail"] 254xhdr = ["time", "mfu", "mru", "mfug", "mrug", "unc", "eskip", "mtxmis", 255 "dread", "pread", "read"] 256zhdr = ["time", "ztotal", "zhits", "zahead", "zpast", "zmisses", "zmax", 257 "zfuture", "zstride", "zissued", "zactive"] 258sint = 1 # Default interval is 1 second 259count = 1 # Default count is 1 260hdr_intr = 20 # Print header every 20 lines of output 261opfile = None 262sep = " " # Default separator is 2 spaces 263l2exist = False 264cmd = ("Usage: arcstat [-havxp] [-f fields] [-o file] [-s string] [interval " 265 "[count]]\n") 266cur = {} 267d = {} 268out = None 269kstat = None 270pretty_print = True 271 272 273if sys.platform.startswith('freebsd'): 274 # Requires py-sysctl on FreeBSD 275 import sysctl 276 277 def kstat_update(): 278 global kstat 279 280 k = [ctl for ctl in sysctl.filter('kstat.zfs.misc.arcstats') 281 if ctl.type != sysctl.CTLTYPE_NODE] 282 k += [ctl for ctl in sysctl.filter('kstat.zfs.misc.zfetchstats') 283 if ctl.type != sysctl.CTLTYPE_NODE] 284 285 if not k: 286 sys.exit(1) 287 288 kstat = {} 289 290 for s in k: 291 if not s: 292 continue 293 294 name, value = s.name, s.value 295 296 if "arcstats" in name: 297 # Trims 'kstat.zfs.misc.arcstats' from the name 298 kstat[name[24:]] = int(value) 299 else: 300 kstat["zfetch_" + name[27:]] = int(value) 301 302elif sys.platform.startswith('linux'): 303 def kstat_update(): 304 global kstat 305 306 k1 = [line.strip() for line in open('/proc/spl/kstat/zfs/arcstats')] 307 308 k2 = ["zfetch_" + line.strip() for line in 309 open('/proc/spl/kstat/zfs/zfetchstats')] 310 311 if k1 is None or k2 is None: 312 sys.exit(1) 313 314 del k1[0:2] 315 del k2[0:2] 316 k = k1 + k2 317 kstat = {} 318 319 for s in k: 320 if not s: 321 continue 322 323 name, unused, value = s.split() 324 kstat[name] = int(value) 325 326 327def detailed_usage(): 328 sys.stderr.write("%s\n" % cmd) 329 sys.stderr.write("Field definitions are as follows:\n") 330 for key in cols: 331 sys.stderr.write("%11s : %s\n" % (key, cols[key][2])) 332 sys.stderr.write("\n") 333 334 sys.exit(0) 335 336 337def usage(): 338 sys.stderr.write("%s\n" % cmd) 339 sys.stderr.write("\t -h : Print this help message\n") 340 sys.stderr.write("\t -a : Print all possible stats\n") 341 sys.stderr.write("\t -v : List all possible field headers and definitions" 342 "\n") 343 sys.stderr.write("\t -x : Print extended stats\n") 344 sys.stderr.write("\t -z : Print zfetch stats\n") 345 sys.stderr.write("\t -f : Specify specific fields to print (see -v)\n") 346 sys.stderr.write("\t -o : Redirect output to the specified file\n") 347 sys.stderr.write("\t -s : Override default field separator with custom " 348 "character or string\n") 349 sys.stderr.write("\t -p : Disable auto-scaling of numerical fields\n") 350 sys.stderr.write("\nExamples:\n") 351 sys.stderr.write("\tarcstat -o /tmp/a.log 2 10\n") 352 sys.stderr.write("\tarcstat -s \",\" -o /tmp/a.log 2 10\n") 353 sys.stderr.write("\tarcstat -v\n") 354 sys.stderr.write("\tarcstat -f time,hit%,dh%,ph%,mh% 1\n") 355 sys.stderr.write("\n") 356 357 sys.exit(1) 358 359 360def snap_stats(): 361 global cur 362 global kstat 363 364 prev = copy.deepcopy(cur) 365 kstat_update() 366 367 cur = kstat 368 369 # fill in additional values from arc_summary 370 cur["caches_size"] = caches_size = cur["anon_data"]+cur["anon_metadata"]+\ 371 cur["mfu_data"]+cur["mfu_metadata"]+cur["mru_data"]+cur["mru_metadata"]+\ 372 cur["uncached_data"]+cur["uncached_metadata"] 373 s = 4294967296 374 pd = cur["pd"] 375 pm = cur["pm"] 376 meta = cur["meta"] 377 v = (s-int(pd))*(s-int(meta))/s 378 cur["mfu_data_target"] = v / 65536 * caches_size / 65536 379 v = (s-int(pm))*int(meta)/s 380 cur["mfu_metadata_target"] = v / 65536 * caches_size / 65536 381 v = int(pd)*(s-int(meta))/s 382 cur["mru_data_target"] = v / 65536 * caches_size / 65536 383 v = int(pm)*int(meta)/s 384 cur["mru_metadata_target"] = v / 65536 * caches_size / 65536 385 386 cur["data_target"] = cur["mfu_data_target"] + cur["mru_data_target"] 387 cur["metadata_target"] = cur["mfu_metadata_target"] + cur["mru_metadata_target"] 388 cur["mfu_target"] = cur["mfu_data_target"] + cur["mfu_metadata_target"] 389 cur["mru_target"] = cur["mru_data_target"] + cur["mru_metadata_target"] 390 391 for key in cur: 392 if re.match(key, "class"): 393 continue 394 if key in prev: 395 d[key] = cur[key] - prev[key] 396 else: 397 d[key] = cur[key] 398 399 400def isint(num): 401 if isinstance(num, float): 402 return num.is_integer() 403 if isinstance(num, int): 404 return True 405 return False 406 407 408def prettynum(sz, scale, num=0): 409 suffix = ['', 'K', 'M', 'G', 'T', 'P', 'E', 'Z'] 410 index = 0 411 412 # Special case for date field 413 if scale == -1: 414 return "%s" % num 415 416 if scale != 100: 417 while abs(num) > scale and index < 5: 418 num = num / scale 419 index += 1 420 421 width = sz - (0 if index == 0 else 1) 422 intlen = len("%.0f" % num) # %.0f rounds to nearest int 423 if sint == 1 and isint(num) or width < intlen + 2: 424 decimal = 0 425 else: 426 decimal = 1 427 return "%*.*f%s" % (width, decimal, num, suffix[index]) 428 429 430def print_values(): 431 global hdr 432 global sep 433 global v 434 global pretty_print 435 436 if pretty_print: 437 fmt = lambda col: prettynum(cols[col][0], cols[col][1], v[col]) 438 else: 439 fmt = lambda col: str(v[col]) 440 441 sys.stdout.write(sep.join(fmt(col) for col in hdr)) 442 sys.stdout.write("\n") 443 sys.stdout.flush() 444 445 446def print_header(): 447 global hdr 448 global sep 449 global pretty_print 450 451 if pretty_print: 452 fmt = lambda col: "%*s" % (cols[col][0], col) 453 else: 454 fmt = lambda col: col 455 456 sys.stdout.write(sep.join(fmt(col) for col in hdr)) 457 sys.stdout.write("\n") 458 459 460def get_terminal_lines(): 461 try: 462 import fcntl 463 import termios 464 import struct 465 data = fcntl.ioctl(sys.stdout.fileno(), termios.TIOCGWINSZ, '1234') 466 sz = struct.unpack('hh', data) 467 return sz[0] 468 except Exception: 469 pass 470 471 472def update_hdr_intr(): 473 global hdr_intr 474 475 lines = get_terminal_lines() 476 if lines and lines > 3: 477 hdr_intr = lines - 3 478 479 480def resize_handler(signum, frame): 481 update_hdr_intr() 482 483 484def init(): 485 global sint 486 global count 487 global hdr 488 global xhdr 489 global zhdr 490 global opfile 491 global sep 492 global out 493 global l2exist 494 global pretty_print 495 496 desired_cols = None 497 aflag = False 498 xflag = False 499 hflag = False 500 vflag = False 501 zflag = False 502 i = 1 503 504 try: 505 opts, args = getopt.getopt( 506 sys.argv[1:], 507 "axzo:hvs:f:p", 508 [ 509 "all", 510 "extended", 511 "zfetch", 512 "outfile", 513 "help", 514 "verbose", 515 "separator", 516 "columns", 517 "parsable" 518 ] 519 ) 520 except getopt.error as msg: 521 sys.stderr.write("Error: %s\n" % str(msg)) 522 usage() 523 opts = None 524 525 for opt, arg in opts: 526 if opt in ('-a', '--all'): 527 aflag = True 528 if opt in ('-x', '--extended'): 529 xflag = True 530 if opt in ('-o', '--outfile'): 531 opfile = arg 532 i += 1 533 if opt in ('-h', '--help'): 534 hflag = True 535 if opt in ('-v', '--verbose'): 536 vflag = True 537 if opt in ('-s', '--separator'): 538 sep = arg 539 i += 1 540 if opt in ('-f', '--columns'): 541 desired_cols = arg 542 i += 1 543 if opt in ('-p', '--parsable'): 544 pretty_print = False 545 if opt in ('-z', '--zfetch'): 546 zflag = True 547 i += 1 548 549 argv = sys.argv[i:] 550 sint = int(argv[0]) if argv else sint 551 count = int(argv[1]) if len(argv) > 1 else (0 if len(argv) > 0 else 1) 552 553 if hflag or (xflag and zflag) or ((zflag or xflag) and desired_cols): 554 usage() 555 556 if vflag: 557 detailed_usage() 558 559 if xflag: 560 hdr = xhdr 561 562 if zflag: 563 hdr = zhdr 564 565 update_hdr_intr() 566 567 # check if L2ARC exists 568 snap_stats() 569 l2_size = cur.get("l2_size") 570 if l2_size: 571 l2exist = True 572 573 if desired_cols: 574 hdr = desired_cols.split(",") 575 576 invalid = [] 577 incompat = [] 578 for ele in hdr: 579 if ele not in cols: 580 invalid.append(ele) 581 elif not l2exist and ele.startswith("l2"): 582 sys.stdout.write("No L2ARC Here\n%s\n" % ele) 583 incompat.append(ele) 584 585 if len(invalid) > 0: 586 sys.stderr.write("Invalid column definition! -- %s\n" % invalid) 587 usage() 588 589 if len(incompat) > 0: 590 sys.stderr.write("Incompatible field specified! -- %s\n" % 591 incompat) 592 usage() 593 594 if aflag: 595 if l2exist: 596 hdr = cols.keys() 597 else: 598 hdr = [col for col in cols.keys() if not col.startswith("l2")] 599 600 if opfile: 601 try: 602 out = open(opfile, "w") 603 sys.stdout = out 604 605 except IOError: 606 sys.stderr.write("Cannot open %s for writing\n" % opfile) 607 sys.exit(1) 608 609 610def calculate(): 611 global d 612 global v 613 global l2exist 614 615 v = dict() 616 v["time"] = time.strftime("%H:%M:%S", time.localtime()) 617 v["hits"] = d["hits"] / sint 618 v["iohs"] = d["iohits"] / sint 619 v["miss"] = d["misses"] / sint 620 v["read"] = v["hits"] + v["iohs"] + v["miss"] 621 v["hit%"] = 100 * v["hits"] / v["read"] if v["read"] > 0 else 0 622 v["ioh%"] = 100 * v["iohs"] / v["read"] if v["read"] > 0 else 0 623 v["miss%"] = 100 - v["hit%"] - v["ioh%"] if v["read"] > 0 else 0 624 625 v["dhit"] = (d["demand_data_hits"] + d["demand_metadata_hits"]) / sint 626 v["dioh"] = (d["demand_data_iohits"] + d["demand_metadata_iohits"]) / sint 627 v["dmis"] = (d["demand_data_misses"] + d["demand_metadata_misses"]) / sint 628 629 v["dread"] = v["dhit"] + v["dioh"] + v["dmis"] 630 v["dh%"] = 100 * v["dhit"] / v["dread"] if v["dread"] > 0 else 0 631 v["di%"] = 100 * v["dioh"] / v["dread"] if v["dread"] > 0 else 0 632 v["dm%"] = 100 - v["dh%"] - v["di%"] if v["dread"] > 0 else 0 633 634 v["ddhit"] = d["demand_data_hits"] / sint 635 v["ddioh"] = d["demand_data_iohits"] / sint 636 v["ddmis"] = d["demand_data_misses"] / sint 637 638 v["ddread"] = v["ddhit"] + v["ddioh"] + v["ddmis"] 639 v["ddh%"] = 100 * v["ddhit"] / v["ddread"] if v["ddread"] > 0 else 0 640 v["ddi%"] = 100 * v["ddioh"] / v["ddread"] if v["ddread"] > 0 else 0 641 v["ddm%"] = 100 - v["ddh%"] - v["ddi%"] if v["ddread"] > 0 else 0 642 643 v["dmhit"] = d["demand_metadata_hits"] / sint 644 v["dmioh"] = d["demand_metadata_iohits"] / sint 645 v["dmmis"] = d["demand_metadata_misses"] / sint 646 647 v["dmread"] = v["dmhit"] + v["dmioh"] + v["dmmis"] 648 v["dmh%"] = 100 * v["dmhit"] / v["dmread"] if v["dmread"] > 0 else 0 649 v["dmi%"] = 100 * v["dmioh"] / v["dmread"] if v["dmread"] > 0 else 0 650 v["dmm%"] = 100 - v["dmh%"] - v["dmi%"] if v["dmread"] > 0 else 0 651 652 v["phit"] = (d["prefetch_data_hits"] + d["prefetch_metadata_hits"]) / sint 653 v["pioh"] = (d["prefetch_data_iohits"] + 654 d["prefetch_metadata_iohits"]) / sint 655 v["pmis"] = (d["prefetch_data_misses"] + 656 d["prefetch_metadata_misses"]) / sint 657 658 v["pread"] = v["phit"] + v["pioh"] + v["pmis"] 659 v["ph%"] = 100 * v["phit"] / v["pread"] if v["pread"] > 0 else 0 660 v["pi%"] = 100 * v["pioh"] / v["pread"] if v["pread"] > 0 else 0 661 v["pm%"] = 100 - v["ph%"] - v["pi%"] if v["pread"] > 0 else 0 662 663 v["pdhit"] = d["prefetch_data_hits"] / sint 664 v["pdioh"] = d["prefetch_data_iohits"] / sint 665 v["pdmis"] = d["prefetch_data_misses"] / sint 666 667 v["pdread"] = v["pdhit"] + v["pdioh"] + v["pdmis"] 668 v["pdh%"] = 100 * v["pdhit"] / v["pdread"] if v["pdread"] > 0 else 0 669 v["pdi%"] = 100 * v["pdioh"] / v["pdread"] if v["pdread"] > 0 else 0 670 v["pdm%"] = 100 - v["pdh%"] - v["pdi%"] if v["pdread"] > 0 else 0 671 672 v["pmhit"] = d["prefetch_metadata_hits"] / sint 673 v["pmioh"] = d["prefetch_metadata_iohits"] / sint 674 v["pmmis"] = d["prefetch_metadata_misses"] / sint 675 676 v["pmread"] = v["pmhit"] + v["pmioh"] + v["pmmis"] 677 v["pmh%"] = 100 * v["pmhit"] / v["pmread"] if v["pmread"] > 0 else 0 678 v["pmi%"] = 100 * v["pmioh"] / v["pmread"] if v["pmread"] > 0 else 0 679 v["pmm%"] = 100 - v["pmh%"] - v["pmi%"] if v["pmread"] > 0 else 0 680 681 v["mhit"] = (d["prefetch_metadata_hits"] + 682 d["demand_metadata_hits"]) / sint 683 v["mioh"] = (d["prefetch_metadata_iohits"] + 684 d["demand_metadata_iohits"]) / sint 685 v["mmis"] = (d["prefetch_metadata_misses"] + 686 d["demand_metadata_misses"]) / sint 687 688 v["mread"] = v["mhit"] + v["mioh"] + v["mmis"] 689 v["mh%"] = 100 * v["mhit"] / v["mread"] if v["mread"] > 0 else 0 690 v["mi%"] = 100 * v["mioh"] / v["mread"] if v["mread"] > 0 else 0 691 v["mm%"] = 100 - v["mh%"] - v["mi%"] if v["mread"] > 0 else 0 692 693 v["arcsz"] = cur["size"] 694 v["size"] = cur["size"] 695 v["c"] = cur["c"] 696 v["mfu"] = d["mfu_hits"] / sint 697 v["mru"] = d["mru_hits"] / sint 698 v["mrug"] = d["mru_ghost_hits"] / sint 699 v["mfug"] = d["mfu_ghost_hits"] / sint 700 v["unc"] = d["uncached_hits"] / sint 701 v["eskip"] = d["evict_skip"] / sint 702 v["el2skip"] = d["evict_l2_skip"] / sint 703 v["el2cach"] = d["evict_l2_cached"] / sint 704 v["el2el"] = d["evict_l2_eligible"] / sint 705 v["el2mfu"] = d["evict_l2_eligible_mfu"] / sint 706 v["el2mru"] = d["evict_l2_eligible_mru"] / sint 707 v["el2inel"] = d["evict_l2_ineligible"] / sint 708 v["mtxmis"] = d["mutex_miss"] / sint 709 v["ztotal"] = (d["zfetch_hits"] + d["zfetch_future"] + d["zfetch_stride"] + 710 d["zfetch_past"] + d["zfetch_misses"]) / sint 711 v["zhits"] = d["zfetch_hits"] / sint 712 v["zahead"] = (d["zfetch_future"] + d["zfetch_stride"]) / sint 713 v["zpast"] = d["zfetch_past"] / sint 714 v["zmisses"] = d["zfetch_misses"] / sint 715 v["zmax"] = d["zfetch_max_streams"] / sint 716 v["zfuture"] = d["zfetch_future"] / sint 717 v["zstride"] = d["zfetch_stride"] / sint 718 v["zissued"] = d["zfetch_io_issued"] / sint 719 v["zactive"] = d["zfetch_io_active"] / sint 720 721 # ARC structural breakdown, ARC types breakdown, ARC states breakdown 722 v["cachessz"] = cur["caches_size"] 723 for fs in fieldstats: 724 fields, stats = fs[0], fs[1:] 725 for field, fieldval in fields.items(): 726 for group in stats: 727 for stat, statval in group.items(): 728 if stat in ["fields", "percent"] or \ 729 ("fields" in group and field not in group["fields"]): 730 continue 731 colname = field + stat 732 v[colname] = cur[fieldval[0] + statval[0]] 733 if "percent" in group: 734 v[colname + "%"] = 100 * v[colname] / \ 735 v[group["percent"]] if v[group["percent"]] > 0 else 0 736 737 if l2exist: 738 v["l2hits"] = d["l2_hits"] / sint 739 v["l2miss"] = d["l2_misses"] / sint 740 v["l2read"] = v["l2hits"] + v["l2miss"] 741 v["l2hit%"] = 100 * v["l2hits"] / v["l2read"] if v["l2read"] > 0 else 0 742 743 v["l2miss%"] = 100 - v["l2hit%"] if v["l2read"] > 0 else 0 744 v["l2asize"] = cur["l2_asize"] 745 v["l2size"] = cur["l2_size"] 746 v["l2bytes"] = d["l2_read_bytes"] / sint 747 v["l2wbytes"] = d["l2_write_bytes"] / sint 748 749 v["l2pref"] = cur["l2_prefetch_asize"] 750 v["l2mfu"] = cur["l2_mfu_asize"] 751 v["l2mru"] = cur["l2_mru_asize"] 752 v["l2data"] = cur["l2_bufc_data_asize"] 753 v["l2meta"] = cur["l2_bufc_metadata_asize"] 754 v["l2pref%"] = 100 * v["l2pref"] / v["l2asize"] 755 v["l2mfu%"] = 100 * v["l2mfu"] / v["l2asize"] 756 v["l2mru%"] = 100 * v["l2mru"] / v["l2asize"] 757 v["l2data%"] = 100 * v["l2data"] / v["l2asize"] 758 v["l2meta%"] = 100 * v["l2meta"] / v["l2asize"] 759 760 v["grow"] = 0 if cur["arc_no_grow"] else 1 761 v["need"] = cur["arc_need_free"] 762 v["free"] = cur["memory_free_bytes"] 763 v["avail"] = cur["memory_available_bytes"] 764 v["waste"] = cur["abd_chunk_waste_size"] 765 766 767def main(): 768 global sint 769 global count 770 global hdr_intr 771 772 i = 0 773 count_flag = 0 774 775 init() 776 if count > 0: 777 count_flag = 1 778 779 signal(SIGINT, SIG_DFL) 780 signal(SIGWINCH, resize_handler) 781 while True: 782 if i == 0: 783 print_header() 784 785 snap_stats() 786 calculate() 787 print_values() 788 789 if count_flag == 1: 790 if count <= 1: 791 break 792 count -= 1 793 794 i = 0 if i >= hdr_intr else i + 1 795 time.sleep(sint) 796 797 if out: 798 out.close() 799 800 801if __name__ == '__main__': 802 main() 803