222 lines
6.1 KiB
C
222 lines
6.1 KiB
C
/*-
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* Copyright (c) 2014
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* The Regents of the University of California. All rights reserved.
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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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* 4. 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 <string.h>
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#include "systat.h"
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#include "extern.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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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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wmove(wnd, 0, 0); wclrtoeol(wnd);
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mvwprintw(wnd, 0, 31+1, "%4.4s %7.7s %7.7s %12.12s %12.12s",
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"rate", "hits", "misses", "total hits", "total misses");
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#define L(row, str) mvwprintw(wnd, row, 5, str); \
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mvwprintw(wnd, row, 31, ":"); \
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mvwprintw(wnd, row, 31+4, "%%")
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L(1, "arcstats");
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L(2, "arcstats.demand_data");
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L(3, "arcstats.demand_metadata");
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L(4, "arcstats.prefetch_data");
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L(5, "arcstats.prefetch_metadata");
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L(6, "zfetchstats");
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L(7, "arcstats.l2");
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L(8, "vdev_cache_stats");
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#undef L
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}
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static int calc(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 zarcstats *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->hits.stat = calc(delta->hits.stat, delta->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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struct zarcstats delta, rate;
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memset(&delta, 0, sizeof delta);
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memset(&rate, 0, sizeof rate);
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domode(&delta, &rate);
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#define DO(stat, row, col, fmt) \
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mvwprintw(wnd, row, col, fmt, stat)
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#define R(row, stat) DO(rate.hits.stat, row, 31+1, "%3lu")
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#define H(row, stat) DO(delta.hits.stat, row, 31+1+5, "%7lu"); \
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DO(curstat.hits.stat, row, 31+1+5+8+8, "%12lu")
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#define M(row, stat) DO(delta.misses.stat, row, 31+1+5+8, "%7lu"); \
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DO(curstat.misses.stat, row, 31+1+5+8+8+13, "%12lu")
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#define E(row, stat) R(row, stat); H(row, stat); M(row, stat);
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E(1, arcstats);
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E(2, arcstats_demand_data);
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E(3, arcstats_demand_metadata);
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E(4, arcstats_prefetch_data);
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E(5, arcstats_prefetch_metadata);
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E(6, zfetchstats);
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E(7, arcstats_l2);
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E(8, vdev_cache_stats);
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#undef DO
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#undef E
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#undef M
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#undef H
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#undef R
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}
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int
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initzarc(void)
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{
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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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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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