250 lines
6.5 KiB
C
250 lines
6.5 KiB
C
/*-
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* Copyright (c) 2014 - 2017, 2019 Yoshihiro Ota
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#include <inttypes.h>
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#include <string.h>
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#include <err.h>
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#include <libutil.h>
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#include "systat.h"
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#include "extern.h"
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#include "devs.h"
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struct zfield {
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uint64_t arcstats;
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uint64_t arcstats_demand_data;
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uint64_t arcstats_demand_metadata;
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uint64_t arcstats_prefetch_data;
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uint64_t arcstats_prefetch_metadata;
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uint64_t zfetchstats;
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uint64_t arcstats_l2;
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uint64_t vdev_cache_stats;
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};
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static struct zarcstats {
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struct zfield hits;
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struct zfield misses;
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} curstat, initstat, oldstat;
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struct zarcrates {
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struct zfield current;
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struct zfield total;
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};
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static void
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getinfo(struct zarcstats *ls);
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WINDOW *
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openzarc(void)
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{
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return (subwin(stdscr, LINES - 3 - 1, 0, MAINWIN_ROW, 0));
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}
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void
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closezarc(WINDOW *w)
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{
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if (w == NULL)
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return;
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wclear(w);
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wrefresh(w);
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delwin(w);
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}
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void
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labelzarc(void)
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{
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int row = 1;
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wmove(wnd, 0, 0); wclrtoeol(wnd);
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mvwprintw(wnd, 0, 31+1, "%4.4s %6.6s %6.6s | Total %4.4s %6.6s %6.6s",
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"Rate", "Hits", "Misses", "Rate", "Hits", "Misses");
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#define L(str) mvwprintw(wnd, row++, 5, \
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"%-26.26s: %% | %%", #str)
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L(arcstats);
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L(arcstats.demand_data);
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L(arcstats.demand_metadata);
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L(arcstats.prefetch_data);
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L(arcstats.prefetch_metadata);
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L(zfetchstats);
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L(arcstats.l2);
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L(vdev_cache_stats);
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#undef L
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dslabel(12, 0, 18);
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}
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static int
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calc_rate(uint64_t hits, uint64_t misses)
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{
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if(hits)
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return 100 * hits / (hits + misses);
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else
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return 0;
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}
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static void
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domode(struct zarcstats *delta, struct zarcrates *rate)
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{
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#define DO(stat) \
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delta->hits.stat = (curstat.hits.stat - oldstat.hits.stat); \
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delta->misses.stat = (curstat.misses.stat - oldstat.misses.stat); \
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rate->current.stat = calc_rate(delta->hits.stat, delta->misses.stat); \
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rate->total.stat = calc_rate(curstat.hits.stat, curstat.misses.stat)
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DO(arcstats);
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DO(arcstats_demand_data);
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DO(arcstats_demand_metadata);
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DO(arcstats_prefetch_data);
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DO(arcstats_prefetch_metadata);
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DO(zfetchstats);
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DO(arcstats_l2);
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DO(vdev_cache_stats);
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DO(arcstats);
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DO(arcstats_demand_data);
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DO(arcstats_demand_metadata);
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DO(arcstats_prefetch_data);
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DO(arcstats_prefetch_metadata);
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DO(zfetchstats);
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DO(arcstats_l2);
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DO(vdev_cache_stats);
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#undef DO
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}
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void
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showzarc(void)
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{
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int row = 1;
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struct zarcstats delta = {};
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struct zarcrates rate = {};
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domode(&delta, &rate);
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#define DO(stat, col, width) \
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sysputuint64(wnd, row, col, width, stat, HN_DIVISOR_1000)
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#define RATES(stat) mvwprintw(wnd, row, 31+1, "%3"PRIu64, rate.current.stat);\
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mvwprintw(wnd, row, 31+1+5+7+7+8, "%3"PRIu64, rate.total.stat)
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#define HITS(stat) DO(delta.hits.stat, 31+1+5, 6); \
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DO(curstat.hits.stat, 31+1+5+7+7+8+5, 6)
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#define MISSES(stat) DO(delta.misses.stat, 31+1+5+7, 6); \
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DO(curstat.misses.stat, 31+1+5+7+7+8+5+7, 6)
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#define E(stat) RATES(stat); HITS(stat); MISSES(stat); ++row
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E(arcstats);
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E(arcstats_demand_data);
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E(arcstats_demand_metadata);
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E(arcstats_prefetch_data);
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E(arcstats_prefetch_metadata);
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E(zfetchstats);
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E(arcstats_l2);
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E(vdev_cache_stats);
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#undef DO
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#undef E
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#undef MISSES
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#undef HITS
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#undef RATES
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dsshow(12, 0, 18, &cur_dev, &last_dev);
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}
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int
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initzarc(void)
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{
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dsinit(12);
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getinfo(&initstat);
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curstat = oldstat = initstat;
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return 1;
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}
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void
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resetzarc(void)
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{
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initzarc();
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}
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static void
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getinfo(struct zarcstats *ls)
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{
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struct devinfo *tmp_dinfo;
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tmp_dinfo = last_dev.dinfo;
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last_dev.dinfo = cur_dev.dinfo;
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cur_dev.dinfo = tmp_dinfo;
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last_dev.snap_time = cur_dev.snap_time;
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dsgetinfo(&cur_dev);
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size_t size = sizeof(ls->hits.arcstats);
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if (sysctlbyname("kstat.zfs.misc.arcstats.hits",
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&ls->hits.arcstats, &size, NULL, 0) != 0)
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return;
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GETSYSCTL("kstat.zfs.misc.arcstats.misses",
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ls->misses.arcstats);
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GETSYSCTL("kstat.zfs.misc.arcstats.demand_data_hits",
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ls->hits.arcstats_demand_data);
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GETSYSCTL("kstat.zfs.misc.arcstats.demand_data_misses",
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ls->misses.arcstats_demand_data);
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GETSYSCTL("kstat.zfs.misc.arcstats.demand_metadata_hits",
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ls->hits.arcstats_demand_metadata);
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GETSYSCTL("kstat.zfs.misc.arcstats.demand_metadata_misses",
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ls->misses.arcstats_demand_metadata);
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GETSYSCTL("kstat.zfs.misc.arcstats.prefetch_data_hits",
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ls->hits.arcstats_prefetch_data);
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GETSYSCTL("kstat.zfs.misc.arcstats.prefetch_data_misses",
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ls->misses.arcstats_prefetch_data);
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GETSYSCTL("kstat.zfs.misc.arcstats.prefetch_metadata_hits",
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ls->hits.arcstats_prefetch_metadata);
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GETSYSCTL("kstat.zfs.misc.arcstats.prefetch_metadata_misses",
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ls->misses.arcstats_prefetch_metadata);
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GETSYSCTL("kstat.zfs.misc.zfetchstats.hits",
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ls->hits.zfetchstats);
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GETSYSCTL("kstat.zfs.misc.zfetchstats.misses",
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ls->misses.zfetchstats);
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GETSYSCTL("kstat.zfs.misc.arcstats.l2_hits",
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ls->hits.arcstats_l2);
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GETSYSCTL("kstat.zfs.misc.arcstats.l2_misses",
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ls->misses.arcstats_l2);
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GETSYSCTL("kstat.zfs.misc.vdev_cache_stats.hits",
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ls->hits.vdev_cache_stats);
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GETSYSCTL("kstat.zfs.misc.vdev_cache_stats.misses",
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ls->misses.vdev_cache_stats);
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}
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void
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fetchzarc(void)
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{
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oldstat = curstat;
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getinfo(&curstat);
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}
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