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fbbd9655e5
Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann <jschauma@stevens.edu> Pull Request: https://github.com/freebsd/freebsd/pull/96
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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* 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 <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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