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/types.h> 29 #include <sys/sysctl.h> 30 31 #include <inttypes.h> 32 #include <string.h> 33 #include <err.h> 34 #include <libutil.h> 35 36 #include "systat.h" 37 #include "extern.h" 38 #include "devs.h" 39 40 struct zfield { 41 uint64_t arcstats; 42 uint64_t arcstats_demand_data; 43 uint64_t arcstats_demand_metadata; 44 uint64_t arcstats_prefetch_data; 45 uint64_t arcstats_prefetch_metadata; 46 uint64_t zfetchstats; 47 uint64_t arcstats_l2; 48 }; 49 50 static struct zarcstats { 51 struct zfield hits; 52 struct zfield misses; 53 } curstat, initstat, oldstat; 54 55 struct zarcrates { 56 struct zfield current; 57 struct zfield total; 58 }; 59 60 static void 61 getinfo(struct zarcstats *ls); 62 63 WINDOW * 64 openzarc(void) 65 { 66 67 return (subwin(stdscr, LINES - 3 - 1, 0, MAINWIN_ROW, 0)); 68 } 69 70 void 71 closezarc(WINDOW *w) 72 { 73 74 if (w == NULL) 75 return; 76 wclear(w); 77 wrefresh(w); 78 delwin(w); 79 } 80 81 void 82 labelzarc(void) 83 { 84 int row = 1; 85 86 wmove(wnd, 0, 0); wclrtoeol(wnd); 87 mvwprintw(wnd, 0, 31+1, "%4.4s %6.6s %6.6s | Total %4.4s %6.6s %6.6s", 88 "Rate", "Hits", "Misses", "Rate", "Hits", "Misses"); 89 #define L(str) mvwprintw(wnd, row++, 5, \ 90 "%-26.26s: %% | %%", #str) 91 L(arcstats); 92 L(arcstats.demand_data); 93 L(arcstats.demand_metadata); 94 L(arcstats.prefetch_data); 95 L(arcstats.prefetch_metadata); 96 L(zfetchstats); 97 L(arcstats.l2); 98 #undef L 99 dslabel(12, 0, 18); 100 } 101 102 static int 103 calc_rate(uint64_t hits, uint64_t misses) 104 { 105 if(hits) 106 return 100 * hits / (hits + misses); 107 else 108 return 0; 109 } 110 111 static void 112 domode(struct zarcstats *delta, struct zarcrates *rate) 113 { 114 #define DO(stat) \ 115 delta->hits.stat = (curstat.hits.stat - oldstat.hits.stat); \ 116 delta->misses.stat = (curstat.misses.stat - oldstat.misses.stat); \ 117 rate->current.stat = calc_rate(delta->hits.stat, delta->misses.stat); \ 118 rate->total.stat = calc_rate(curstat.hits.stat, curstat.misses.stat) 119 DO(arcstats); 120 DO(arcstats_demand_data); 121 DO(arcstats_demand_metadata); 122 DO(arcstats_prefetch_data); 123 DO(arcstats_prefetch_metadata); 124 DO(zfetchstats); 125 DO(arcstats_l2); 126 DO(arcstats); 127 DO(arcstats_demand_data); 128 DO(arcstats_demand_metadata); 129 DO(arcstats_prefetch_data); 130 DO(arcstats_prefetch_metadata); 131 DO(zfetchstats); 132 DO(arcstats_l2); 133 #undef DO 134 } 135 136 void 137 showzarc(void) 138 { 139 int row = 1; 140 struct zarcstats delta = {}; 141 struct zarcrates rate = {}; 142 143 domode(&delta, &rate); 144 145 #define DO(stat, col, width) \ 146 sysputuint64(wnd, row, col, width, stat, HN_DIVISOR_1000) 147 #define RATES(stat) mvwprintw(wnd, row, 31+1, "%3"PRIu64, rate.current.stat);\ 148 mvwprintw(wnd, row, 31+1+5+7+7+8, "%3"PRIu64, rate.total.stat) 149 #define HITS(stat) DO(delta.hits.stat, 31+1+5, 6); \ 150 DO(curstat.hits.stat, 31+1+5+7+7+8+5, 6) 151 #define MISSES(stat) DO(delta.misses.stat, 31+1+5+7, 6); \ 152 DO(curstat.misses.stat, 31+1+5+7+7+8+5+7, 6) 153 #define E(stat) RATES(stat); HITS(stat); MISSES(stat); ++row 154 E(arcstats); 155 E(arcstats_demand_data); 156 E(arcstats_demand_metadata); 157 E(arcstats_prefetch_data); 158 E(arcstats_prefetch_metadata); 159 E(zfetchstats); 160 E(arcstats_l2); 161 #undef DO 162 #undef E 163 #undef MISSES 164 #undef HITS 165 #undef RATES 166 dsshow(12, 0, 18, &cur_dev, &last_dev); 167 } 168 169 int 170 initzarc(void) 171 { 172 dsinit(12); 173 getinfo(&initstat); 174 curstat = oldstat = initstat; 175 176 return 1; 177 } 178 179 void 180 resetzarc(void) 181 { 182 183 initzarc(); 184 } 185 186 static void 187 getinfo(struct zarcstats *ls) 188 { 189 struct devinfo *tmp_dinfo; 190 191 tmp_dinfo = last_dev.dinfo; 192 last_dev.dinfo = cur_dev.dinfo; 193 cur_dev.dinfo = tmp_dinfo; 194 195 last_dev.snap_time = cur_dev.snap_time; 196 dsgetinfo(&cur_dev); 197 198 size_t size = sizeof(ls->hits.arcstats); 199 if (sysctlbyname("kstat.zfs.misc.arcstats.hits", 200 &ls->hits.arcstats, &size, NULL, 0) != 0) 201 return; 202 GETSYSCTL("kstat.zfs.misc.arcstats.misses", 203 ls->misses.arcstats); 204 GETSYSCTL("kstat.zfs.misc.arcstats.demand_data_hits", 205 ls->hits.arcstats_demand_data); 206 GETSYSCTL("kstat.zfs.misc.arcstats.demand_data_misses", 207 ls->misses.arcstats_demand_data); 208 GETSYSCTL("kstat.zfs.misc.arcstats.demand_metadata_hits", 209 ls->hits.arcstats_demand_metadata); 210 GETSYSCTL("kstat.zfs.misc.arcstats.demand_metadata_misses", 211 ls->misses.arcstats_demand_metadata); 212 GETSYSCTL("kstat.zfs.misc.arcstats.prefetch_data_hits", 213 ls->hits.arcstats_prefetch_data); 214 GETSYSCTL("kstat.zfs.misc.arcstats.prefetch_data_misses", 215 ls->misses.arcstats_prefetch_data); 216 GETSYSCTL("kstat.zfs.misc.arcstats.prefetch_metadata_hits", 217 ls->hits.arcstats_prefetch_metadata); 218 GETSYSCTL("kstat.zfs.misc.arcstats.prefetch_metadata_misses", 219 ls->misses.arcstats_prefetch_metadata); 220 GETSYSCTL("kstat.zfs.misc.zfetchstats.hits", 221 ls->hits.zfetchstats); 222 GETSYSCTL("kstat.zfs.misc.zfetchstats.misses", 223 ls->misses.zfetchstats); 224 GETSYSCTL("kstat.zfs.misc.arcstats.l2_hits", 225 ls->hits.arcstats_l2); 226 GETSYSCTL("kstat.zfs.misc.arcstats.l2_misses", 227 ls->misses.arcstats_l2); 228 } 229 230 void 231 fetchzarc(void) 232 { 233 234 oldstat = curstat; 235 getinfo(&curstat); 236 } 237