305 lines
7.4 KiB
C
305 lines
7.4 KiB
C
/* $OpenBSD: iostat.c,v 1.50 2021/08/14 14:22:26 millert Exp $ */
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/* $NetBSD: iostat.c,v 1.5 1996/05/10 23:16:35 thorpej Exp $ */
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/*
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* Copyright (c) 1980, 1992, 1993
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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/types.h>
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#include <sys/mount.h>
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#include <sys/signal.h>
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#include <sys/sched.h>
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#include <sys/sysctl.h>
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#include <sys/time.h>
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#include <string.h>
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#include <stdlib.h>
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#include <paths.h>
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#include "systat.h"
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#include "dkstats.h"
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extern struct _disk cur, last;
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struct bcachestats bclast, bccur;
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static double etime;
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void showtotal(void);
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void showdrive(int);
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void print_io(void);
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int read_io(void);
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int select_io(void);
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void showbcache(void);
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#define ATIME(x,y) ((double)x[y].tv_sec + \
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((double)x[y].tv_usec / (double)1000000))
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field_def fields_io[] = {
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{"DEVICE", 8, 16, 1, FLD_ALIGN_LEFT, -1, 0, 0, 0},
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{"READ", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
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{"WRITE", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
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{"RTPS", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
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{"WTPS", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
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{"SEC", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
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{"", 8, 19, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0},
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{"STATS", 12, 15, 1, FLD_ALIGN_LEFT, -1, 0, 0, 0}
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};
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#define FLD_IO_DEVICE FIELD_ADDR(fields_io,0)
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#define FLD_IO_READ FIELD_ADDR(fields_io,1)
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#define FLD_IO_WRITE FIELD_ADDR(fields_io,2)
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#define FLD_IO_RTPS FIELD_ADDR(fields_io,3)
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#define FLD_IO_WTPS FIELD_ADDR(fields_io,4)
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#define FLD_IO_SEC FIELD_ADDR(fields_io,5)
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/* This is a hack that stuffs bcache statistics to the last two columns! */
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#define FLD_IO_SVAL FIELD_ADDR(fields_io,6)
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#define FLD_IO_SSTR FIELD_ADDR(fields_io,7)
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/* Define views */
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field_def *view_io_0[] = {
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FLD_IO_DEVICE, FLD_IO_READ, FLD_IO_WRITE, FLD_IO_RTPS,
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FLD_IO_WTPS, FLD_IO_SEC, FLD_IO_SVAL, FLD_IO_SSTR, NULL
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};
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static enum state { BOOT, TIME } state = TIME;
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static int
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io_keyboard_callback(int ch)
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{
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switch (ch) {
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case 'b':
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state = BOOT;
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break;
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case 't':
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state = TIME;
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break;
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default:
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return keyboard_callback(ch);
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}
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return 0;
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}
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/* Define view managers */
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struct view_manager iostat_mgr = {
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"Iostat", select_io, read_io, NULL, print_header,
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print_io, io_keyboard_callback, NULL, NULL
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};
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field_view views_io[] = {
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{view_io_0, "iostat", '2', &iostat_mgr},
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{NULL, NULL, 0, NULL}
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};
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int
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select_io(void)
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{
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num_disp = cur.dk_ndrive + 1;
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return (0);
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}
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int
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read_io(void)
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{
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int mib[3];
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size_t size;
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dkreadstats();
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if (state == BOOT) {
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unsigned int dn;
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for (dn = 0; dn < last.dk_ndrive; dn++) {
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last.dk_rbytes[dn] = 0;
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last.dk_wbytes[dn] = 0;
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last.dk_rxfer[dn] = 0;
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last.dk_wxfer[dn] = 0;
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}
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}
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dkswap();
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num_disp = cur.dk_ndrive + 1;
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bclast = bccur;
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mib[0] = CTL_VFS;
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mib[1] = VFS_GENERIC;
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mib[2] = VFS_BCACHESTAT;
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size = sizeof(bccur);
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if (sysctl(mib, 3, &bccur, &size, NULL, 0) == -1)
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error("cannot get vfs.bcachestat");
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if (bclast.numbufs == 0)
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bclast = bccur;
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if (state == BOOT)
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memset(&bclast, 0, sizeof(bclast));
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return 0;
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}
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void
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print_io(void)
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{
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int n, count = 0;
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int curr;
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if (state == BOOT)
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etime = 1.0;
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else
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etime = naptime;
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/* XXX engine internals: save and restore curr_line for bcache */
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curr = curr_line;
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for (n = dispstart; n < num_disp - 1; n++) {
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showdrive(n);
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count++;
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if (maxprint > 0 && count >= maxprint)
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break;
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}
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if (maxprint == 0 || count < maxprint)
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showtotal();
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curr_line = curr;
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showbcache();
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}
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int
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initiostat(void)
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{
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field_view *v;
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dkinit(1);
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dkreadstats();
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bzero(&bccur, sizeof(bccur));
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for (v = views_io; v->name != NULL; v++)
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add_view(v);
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return (1);
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}
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void
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showtotal(void)
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{
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double rsum, wsum, rtsum, wtsum, mssum;
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int dn;
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rsum = wsum = rtsum = wtsum = mssum = 0.0;
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for (dn = 0; dn < cur.dk_ndrive; dn++) {
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rsum += cur.dk_rbytes[dn] / etime;
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wsum += cur.dk_wbytes[dn] / etime;
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rtsum += cur.dk_rxfer[dn] / etime;
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wtsum += cur.dk_wxfer[dn] / etime;
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mssum += ATIME(cur.dk_time, dn) / etime;
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}
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print_fld_str(FLD_IO_DEVICE, "Totals");
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print_fld_size(FLD_IO_READ, rsum);
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print_fld_size(FLD_IO_WRITE, wsum);
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print_fld_size(FLD_IO_RTPS, rtsum);
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print_fld_size(FLD_IO_WTPS, wtsum);
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print_fld_float(FLD_IO_SEC, mssum, 1);
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end_line();
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}
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void
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showdrive(int dn)
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{
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print_fld_str(FLD_IO_DEVICE, cur.dk_name[dn]);
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print_fld_size(FLD_IO_READ, cur.dk_rbytes[dn] / etime);
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print_fld_size(FLD_IO_WRITE, cur.dk_wbytes[dn] / etime);
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print_fld_size(FLD_IO_RTPS, cur.dk_rxfer[dn] / etime);
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print_fld_size(FLD_IO_WTPS, cur.dk_wxfer[dn] / etime);
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print_fld_float(FLD_IO_SEC, ATIME(cur.dk_time, dn) / etime, 1);
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end_line();
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}
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void
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showbcache(void)
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{
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print_fld_str(FLD_IO_SSTR, "total pages");
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print_fld_ssize(FLD_IO_SVAL, bccur.numbufpages);
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end_line();
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print_fld_str(FLD_IO_SSTR, "dma pages");
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print_fld_ssize(FLD_IO_SVAL, bccur.dmapages);
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end_line();
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print_fld_str(FLD_IO_SSTR, "dirty pages");
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print_fld_ssize(FLD_IO_SVAL, bccur.numdirtypages);
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end_line();
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print_fld_str(FLD_IO_SSTR, "delwri bufs");
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print_fld_ssize(FLD_IO_SVAL, bccur.delwribufs);
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end_line();
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print_fld_str(FLD_IO_SSTR, "busymap bufs");
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print_fld_ssize(FLD_IO_SVAL, bccur.busymapped);
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end_line();
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print_fld_str(FLD_IO_SSTR, "avail kvaslots");
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print_fld_ssize(FLD_IO_SVAL, bccur.kvaslots_avail);
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end_line();
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print_fld_str(FLD_IO_SSTR, "kvaslots");
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print_fld_ssize(FLD_IO_SVAL, bccur.kvaslots);
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end_line();
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print_fld_str(FLD_IO_SSTR, "pending writes");
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print_fld_ssize(FLD_IO_SVAL, bccur.pendingwrites);
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end_line();
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print_fld_str(FLD_IO_SSTR, "pending reads");
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print_fld_ssize(FLD_IO_SVAL, bccur.pendingreads);
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end_line();
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print_fld_str(FLD_IO_SSTR, "cache hits");
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print_fld_ssize(FLD_IO_SVAL, bccur.cachehits - bclast.cachehits);
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end_line();
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print_fld_str(FLD_IO_SSTR, "high flips");
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print_fld_ssize(FLD_IO_SVAL, bccur.highflips - bclast.highflips);
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end_line();
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print_fld_str(FLD_IO_SSTR, "high flops");
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print_fld_ssize(FLD_IO_SVAL, bccur.highflops - bclast.highflops);
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end_line();
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print_fld_str(FLD_IO_SSTR, "dma flips");
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print_fld_ssize(FLD_IO_SVAL, bccur.dmaflips - bclast.dmaflips);
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end_line();
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}
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