1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2014 - 2017, 2019 Yoshihiro Ota 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <sys/types.h> 32 #include <sys/sysctl.h> 33 34 #include <inttypes.h> 35 #include <string.h> 36 #include <err.h> 37 #include <libutil.h> 38 39 #include "systat.h" 40 #include "extern.h" 41 #include "devs.h" 42 43 struct zfield { 44 uint64_t arcstats; 45 uint64_t arcstats_demand_data; 46 uint64_t arcstats_demand_metadata; 47 uint64_t arcstats_prefetch_data; 48 uint64_t arcstats_prefetch_metadata; 49 uint64_t zfetchstats; 50 uint64_t arcstats_l2; 51 }; 52 53 static struct zarcstats { 54 struct zfield hits; 55 struct zfield misses; 56 } curstat, initstat, oldstat; 57 58 struct zarcrates { 59 struct zfield current; 60 struct zfield total; 61 }; 62 63 static void 64 getinfo(struct zarcstats *ls); 65 66 WINDOW * 67 openzarc(void) 68 { 69 70 return (subwin(stdscr, LINES - 3 - 1, 0, MAINWIN_ROW, 0)); 71 } 72 73 void 74 closezarc(WINDOW *w) 75 { 76 77 if (w == NULL) 78 return; 79 wclear(w); 80 wrefresh(w); 81 delwin(w); 82 } 83 84 void 85 labelzarc(void) 86 { 87 int row = 1; 88 89 wmove(wnd, 0, 0); wclrtoeol(wnd); 90 mvwprintw(wnd, 0, 31+1, "%4.4s %6.6s %6.6s | Total %4.4s %6.6s %6.6s", 91 "Rate", "Hits", "Misses", "Rate", "Hits", "Misses"); 92 #define L(str) mvwprintw(wnd, row++, 5, \ 93 "%-26.26s: %% | %%", #str) 94 L(arcstats); 95 L(arcstats.demand_data); 96 L(arcstats.demand_metadata); 97 L(arcstats.prefetch_data); 98 L(arcstats.prefetch_metadata); 99 L(zfetchstats); 100 L(arcstats.l2); 101 #undef L 102 dslabel(12, 0, 18); 103 } 104 105 static int 106 calc_rate(uint64_t hits, uint64_t misses) 107 { 108 if(hits) 109 return 100 * hits / (hits + misses); 110 else 111 return 0; 112 } 113 114 static void 115 domode(struct zarcstats *delta, struct zarcrates *rate) 116 { 117 #define DO(stat) \ 118 delta->hits.stat = (curstat.hits.stat - oldstat.hits.stat); \ 119 delta->misses.stat = (curstat.misses.stat - oldstat.misses.stat); \ 120 rate->current.stat = calc_rate(delta->hits.stat, delta->misses.stat); \ 121 rate->total.stat = calc_rate(curstat.hits.stat, curstat.misses.stat) 122 DO(arcstats); 123 DO(arcstats_demand_data); 124 DO(arcstats_demand_metadata); 125 DO(arcstats_prefetch_data); 126 DO(arcstats_prefetch_metadata); 127 DO(zfetchstats); 128 DO(arcstats_l2); 129 DO(arcstats); 130 DO(arcstats_demand_data); 131 DO(arcstats_demand_metadata); 132 DO(arcstats_prefetch_data); 133 DO(arcstats_prefetch_metadata); 134 DO(zfetchstats); 135 DO(arcstats_l2); 136 #undef DO 137 } 138 139 void 140 showzarc(void) 141 { 142 int row = 1; 143 struct zarcstats delta = {}; 144 struct zarcrates rate = {}; 145 146 domode(&delta, &rate); 147 148 #define DO(stat, col, width) \ 149 sysputuint64(wnd, row, col, width, stat, HN_DIVISOR_1000) 150 #define RATES(stat) mvwprintw(wnd, row, 31+1, "%3"PRIu64, rate.current.stat);\ 151 mvwprintw(wnd, row, 31+1+5+7+7+8, "%3"PRIu64, rate.total.stat) 152 #define HITS(stat) DO(delta.hits.stat, 31+1+5, 6); \ 153 DO(curstat.hits.stat, 31+1+5+7+7+8+5, 6) 154 #define MISSES(stat) DO(delta.misses.stat, 31+1+5+7, 6); \ 155 DO(curstat.misses.stat, 31+1+5+7+7+8+5+7, 6) 156 #define E(stat) RATES(stat); HITS(stat); MISSES(stat); ++row 157 E(arcstats); 158 E(arcstats_demand_data); 159 E(arcstats_demand_metadata); 160 E(arcstats_prefetch_data); 161 E(arcstats_prefetch_metadata); 162 E(zfetchstats); 163 E(arcstats_l2); 164 #undef DO 165 #undef E 166 #undef MISSES 167 #undef HITS 168 #undef RATES 169 dsshow(12, 0, 18, &cur_dev, &last_dev); 170 } 171 172 int 173 initzarc(void) 174 { 175 dsinit(12); 176 getinfo(&initstat); 177 curstat = oldstat = initstat; 178 179 return 1; 180 } 181 182 void 183 resetzarc(void) 184 { 185 186 initzarc(); 187 } 188 189 static void 190 getinfo(struct zarcstats *ls) 191 { 192 struct devinfo *tmp_dinfo; 193 194 tmp_dinfo = last_dev.dinfo; 195 last_dev.dinfo = cur_dev.dinfo; 196 cur_dev.dinfo = tmp_dinfo; 197 198 last_dev.snap_time = cur_dev.snap_time; 199 dsgetinfo(&cur_dev); 200 201 size_t size = sizeof(ls->hits.arcstats); 202 if (sysctlbyname("kstat.zfs.misc.arcstats.hits", 203 &ls->hits.arcstats, &size, NULL, 0) != 0) 204 return; 205 GETSYSCTL("kstat.zfs.misc.arcstats.misses", 206 ls->misses.arcstats); 207 GETSYSCTL("kstat.zfs.misc.arcstats.demand_data_hits", 208 ls->hits.arcstats_demand_data); 209 GETSYSCTL("kstat.zfs.misc.arcstats.demand_data_misses", 210 ls->misses.arcstats_demand_data); 211 GETSYSCTL("kstat.zfs.misc.arcstats.demand_metadata_hits", 212 ls->hits.arcstats_demand_metadata); 213 GETSYSCTL("kstat.zfs.misc.arcstats.demand_metadata_misses", 214 ls->misses.arcstats_demand_metadata); 215 GETSYSCTL("kstat.zfs.misc.arcstats.prefetch_data_hits", 216 ls->hits.arcstats_prefetch_data); 217 GETSYSCTL("kstat.zfs.misc.arcstats.prefetch_data_misses", 218 ls->misses.arcstats_prefetch_data); 219 GETSYSCTL("kstat.zfs.misc.arcstats.prefetch_metadata_hits", 220 ls->hits.arcstats_prefetch_metadata); 221 GETSYSCTL("kstat.zfs.misc.arcstats.prefetch_metadata_misses", 222 ls->misses.arcstats_prefetch_metadata); 223 GETSYSCTL("kstat.zfs.misc.zfetchstats.hits", 224 ls->hits.zfetchstats); 225 GETSYSCTL("kstat.zfs.misc.zfetchstats.misses", 226 ls->misses.zfetchstats); 227 GETSYSCTL("kstat.zfs.misc.arcstats.l2_hits", 228 ls->hits.arcstats_l2); 229 GETSYSCTL("kstat.zfs.misc.arcstats.l2_misses", 230 ls->misses.arcstats_l2); 231 } 232 233 void 234 fetchzarc(void) 235 { 236 237 oldstat = curstat; 238 getinfo(&curstat); 239 } 240