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