freebsd-skq/usr.sbin/gstat/gstat.c
Maxim Sobolev d065b3eb9e In the endless batch mode (-B), terminate if and when stdout is closed.
That mode is useful to call gstat from other app, however kinda useless
since gstat won't exit and stay running forever when its parent process
has long gone.

MFC after:	2 weeks
2020-08-24 16:45:23 +00:00

604 lines
14 KiB
C

/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2003 Poul-Henning Kamp
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The names of the authors may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <sys/devicestat.h>
#include <sys/mman.h>
#include <sys/resource.h>
#include <sys/time.h>
#include <curses.h>
#include <devstat.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <histedit.h>
#include <libgeom.h>
#include <paths.h>
#include <regex.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include <unistd.h>
static int flag_a, flag_b, flag_B, flag_c, flag_C, flag_d, flag_o, flag_p,
flag_s;
static int flag_I = 1000000;
#define HIGH_PCT_BUSY_THRESH 80
#define MEDIUM_PCT_BUSY_THRESH 50
#define PRINTMSG(...) do { \
if ((flag_b && !loop) || (flag_B)) \
printf(__VA_ARGS__); \
else if (!flag_b) \
printw(__VA_ARGS__); \
} while(0)
static void usage(void);
static const char*
el_prompt(void)
{
return ("Filter: ");
}
int
main(int argc, char **argv)
{
int error, i, quit;
int curx, cury, maxx, maxy, line_len, loop, max_flen, head_printed;
struct devstat *gsp, *gsq;
void *sp, *sq;
double dt;
struct timespec tp, tq;
struct gmesh gmp;
struct gprovider *pp;
struct gconsumer *cp;
struct gident *gid;
regex_t f_re, tmp_f_re;
short cf, cb;
char *p;
char f_s[100], pf_s[100], tmp_f_s[100];
char ts[100], g_name[4096];
const char *line;
long double ld[16];
uint64_t u64;
EditLine *el;
History *hist;
HistEvent hist_ev;
hist = NULL;
el = NULL;
maxx = -1;
curx = -1;
loop = 1;
/* Turn on batch mode if output is not tty. */
if (!isatty(fileno(stdout)))
flag_b = 1;
f_s[0] = '\0';
while ((i = getopt(argc, argv, "abBdcCf:I:ops")) != -1) {
switch (i) {
case 'a':
flag_a = 1;
break;
case 'b':
flag_b = 1;
break;
case 'B':
flag_B = 1;
flag_b = 1;
break;
case 'c':
flag_c = 1;
break;
case 'C':
flag_C = 1;
/* csv out implies repeating batch mode */
flag_b = 1;
flag_B = 1;
head_printed = 0;
break;
case 'd':
flag_d = 1;
break;
case 'f':
if (strlen(optarg) > sizeof(f_s) - 1)
errx(EX_USAGE, "Filter string too long");
if (regcomp(&f_re, optarg, REG_EXTENDED) != 0)
errx(EX_USAGE,
"Invalid filter - see re_format(7)");
strlcpy(f_s, optarg, sizeof(f_s));
break;
case 'o':
flag_o = 1;
break;
case 'I':
p = NULL;
i = strtoul(optarg, &p, 0);
if (p == optarg || errno == EINVAL ||
errno == ERANGE) {
errx(1, "Invalid argument to -I");
} else if (!strcmp(p, "s"))
i *= 1000000;
else if (!strcmp(p, "ms"))
i *= 1000;
else if (!strcmp(p, "us"))
i *= 1;
flag_I = i;
break;
case 'p':
flag_p = 1;
break;
case 's':
flag_s = 1;
break;
case '?':
default:
usage();
}
}
argc -= optind;
argv += optind;
if (argc != 0)
usage();
i = geom_gettree(&gmp);
if (i != 0)
err(1, "geom_gettree = %d", i);
error = geom_stats_open();
if (error)
err(1, "geom_stats_open()");
sq = NULL;
sq = geom_stats_snapshot_get();
if (sq == NULL)
err(1, "geom_stats_snapshot()");
if (!flag_b) {
/* Setup libedit */
hist = history_init();
if (hist == NULL)
err(EX_SOFTWARE, "history_init()");
history(hist, &hist_ev, H_SETSIZE, 100);
el = el_init("gstat", stdin, stdout, stderr);
if (el == NULL)
err(EX_SOFTWARE, "el_init");
el_set(el, EL_EDITOR, "emacs");
el_set(el, EL_SIGNAL, 1);
el_set(el, EL_HIST, history, hist);
el_set(el, EL_PROMPT, el_prompt);
if (f_s[0] != '\0')
history(hist, &hist_ev, H_ENTER, f_s);
/* Setup curses */
initscr();
start_color();
use_default_colors();
pair_content(0, &cf, &cb);
init_pair(1, COLOR_GREEN, cb);
init_pair(2, COLOR_MAGENTA, cb);
init_pair(3, COLOR_RED, cb);
cbreak();
noecho();
nonl();
nodelay(stdscr, 1);
intrflush(stdscr, FALSE);
keypad(stdscr, TRUE);
}
geom_stats_snapshot_timestamp(sq, &tq);
for (quit = 0; !quit;) {
sp = geom_stats_snapshot_get();
if (sp == NULL)
err(1, "geom_stats_snapshot()");
geom_stats_snapshot_timestamp(sp, &tp);
dt = tp.tv_sec - tq.tv_sec;
dt += (tp.tv_nsec - tq.tv_nsec) * 1e-9;
tq = tp;
if (flag_C) { /* set timestamp string */
(void)strftime(ts,sizeof(ts),
"%F %T",localtime(&tq.tv_sec));
(void)snprintf(ts,sizeof(ts),
"%s.%.9ld",ts,tq.tv_nsec);
}
geom_stats_snapshot_reset(sp);
geom_stats_snapshot_reset(sq);
if (!flag_b)
move(0,0);
if (!flag_C)
PRINTMSG("dT: %5.3fs w: %.3fs", dt,
(float)flag_I / 1000000);
if (!flag_C && f_s[0] != '\0') {
PRINTMSG(" filter: ");
if (!flag_b) {
getyx(stdscr, cury, curx);
getmaxyx(stdscr, maxy, maxx);
}
strlcpy(pf_s, f_s, sizeof(pf_s));
max_flen = maxx - curx - 1;
if ((int)strlen(f_s) > max_flen && max_flen >= 0) {
if (max_flen > 3)
pf_s[max_flen - 3] = '.';
if (max_flen > 2)
pf_s[max_flen - 2] = '.';
if (max_flen > 1)
pf_s[max_flen - 1] = '.';
pf_s[max_flen] = '\0';
}
PRINTMSG("%s", pf_s);
}
if (!flag_C) {
PRINTMSG("\n");
PRINTMSG(" L(q) ops/s ");
if (flag_s) {
PRINTMSG(" r/s kB kBps ms/r ");
PRINTMSG(" w/s kB kBps ms/w ");
}
else {
PRINTMSG(" r/s kBps ms/r ");
PRINTMSG(" w/s kBps ms/w ");
}
if (flag_d) {
if (flag_s) {
PRINTMSG(" d/s kB kBps");
PRINTMSG(" ms/d ");
} else
PRINTMSG(" d/s kBps ms/d ");
}
if (flag_o)
PRINTMSG(" o/s ms/o ");
PRINTMSG("%%busy Name\n");
} else if (flag_C && !head_printed) {
PRINTMSG("timestamp,name,q-depth,total_ops/s");
if (flag_s) {
PRINTMSG(",read/s,read_sz-KiB");
PRINTMSG(",read-KiB/s,ms/read");
PRINTMSG(",write/s,write_sz-KiB");
PRINTMSG(",write-KiB/s,ms/write");
} else {
PRINTMSG(",read/s,read-KiB/s,ms/read");
PRINTMSG(",write/s,write-KiB/s,ms/write");
}
if (flag_d) {
if (flag_s) {
PRINTMSG(",delete/s,delete-sz-KiB");
PRINTMSG(",delete-KiB/s,ms/delete");
} else {
PRINTMSG(",delete/s,delete-KiB/s");
PRINTMSG(",ms/delete");
}
}
if (flag_o)
PRINTMSG(",other/s,ms/other");
PRINTMSG(",%%busy\n");
head_printed = 1;
}
for (;;) {
gsp = geom_stats_snapshot_next(sp);
gsq = geom_stats_snapshot_next(sq);
if (gsp == NULL || gsq == NULL)
break;
if (gsp->id == NULL)
continue;
gid = geom_lookupid(&gmp, gsp->id);
if (gid == NULL) {
geom_deletetree(&gmp);
i = geom_gettree(&gmp);
if (i != 0)
err(1, "geom_gettree = %d", i);
gid = geom_lookupid(&gmp, gsp->id);
}
if (gid == NULL)
continue;
if (gid->lg_what == ISCONSUMER && !flag_c)
continue;
if (flag_p && gid->lg_what == ISPROVIDER &&
((struct gprovider *)
(gid->lg_ptr))->lg_geom->lg_rank != 1)
continue;
/* Do not print past end of window */
if (!flag_b) {
getyx(stdscr, cury, curx);
if (curx > 0)
continue;
}
if ((gid->lg_what == ISPROVIDER
|| gid->lg_what == ISCONSUMER) && f_s[0] != '\0') {
pp = gid->lg_ptr;
if ((regexec(&f_re, pp->lg_name, 0, NULL, 0)
!= 0))
continue;
}
if (gsp->sequence0 != gsp->sequence1) {
/*
* it is ok to skip entire line silently
* for CSV output
*/
if (!flag_C)
PRINTMSG("*\n");
continue;
}
devstat_compute_statistics(gsp, gsq, dt,
DSM_QUEUE_LENGTH, &u64,
DSM_TRANSFERS_PER_SECOND, &ld[0],
DSM_TRANSFERS_PER_SECOND_READ, &ld[1],
DSM_MB_PER_SECOND_READ, &ld[2],
DSM_MS_PER_TRANSACTION_READ, &ld[3],
DSM_TRANSFERS_PER_SECOND_WRITE, &ld[4],
DSM_MB_PER_SECOND_WRITE, &ld[5],
DSM_MS_PER_TRANSACTION_WRITE, &ld[6],
DSM_BUSY_PCT, &ld[7],
DSM_TRANSFERS_PER_SECOND_FREE, &ld[8],
DSM_MB_PER_SECOND_FREE, &ld[9],
DSM_MS_PER_TRANSACTION_FREE, &ld[10],
DSM_TRANSFERS_PER_SECOND_OTHER, &ld[11],
DSM_MS_PER_TRANSACTION_OTHER, &ld[12],
DSM_KB_PER_TRANSFER_READ, &ld[13],
DSM_KB_PER_TRANSFER_WRITE, &ld[14],
DSM_KB_PER_TRANSFER_FREE, &ld[15],
DSM_NONE);
if (flag_a && ld[7] < 0.1) {
*gsq = *gsp;
continue;
}
/* store name for geom device */
if (gid == NULL) {
(void)snprintf(g_name, sizeof(g_name), "??");
} else if (gid->lg_what == ISPROVIDER) {
pp = gid->lg_ptr;
(void)snprintf(g_name, sizeof(g_name), "%s",
pp->lg_name);
} else if (gid->lg_what == ISCONSUMER) {
cp = gid->lg_ptr;
(void)snprintf(g_name, sizeof(g_name),
"%s/%s/%s",
cp->lg_geom->lg_class->lg_name,
cp->lg_geom->lg_name,
cp->lg_provider->lg_name);
}
if (flag_C) {
PRINTMSG("%s", ts); /* timestamp */
PRINTMSG(",%s", g_name); /* print name */
PRINTMSG(",%ju", (uintmax_t)u64);
PRINTMSG(",%.0f", (double)ld[0]);
PRINTMSG(",%.0f", (double)ld[1]);
if (flag_s)
PRINTMSG(",%.0f", (double)ld[13]);
PRINTMSG(",%.0f", (double)ld[2] * 1024);
if (ld[3] > 1e3)
PRINTMSG(",%.0f", (double)ld[3]);
else
PRINTMSG(",%.1f", (double)ld[3]);
PRINTMSG(",%.0f", (double)ld[4]);
if (flag_s)
PRINTMSG(",%.0f", (double)ld[14]);
PRINTMSG(",%.0f", (double)ld[5] * 1024);
if (ld[6] > 1e3)
PRINTMSG(",%.0f", (double)ld[6]);
else
PRINTMSG(",%.1f", (double)ld[6]);
if (flag_d) {
PRINTMSG(",%.0f", (double)ld[8]);
if (flag_s)
PRINTMSG(",%.0f",
(double)ld[15]);
PRINTMSG(",%.0f", (double)ld[9] * 1024);
if (ld[10] > 1e3)
PRINTMSG(",%.0f",
(double)ld[10]);
else
PRINTMSG(",%.1f",
(double)ld[10]);
}
if (flag_o) {
PRINTMSG(",%.0f", (double)ld[11]);
if (ld[12] > 1e3)
PRINTMSG(",%.0f",
(double)ld[12]);
else
PRINTMSG(",%.1f",
(double)ld[12]);
}
PRINTMSG(",%.1lf", (double)ld[7]);
} else {
PRINTMSG(" %4ju", (uintmax_t)u64);
PRINTMSG(" %6.0f", (double)ld[0]);
PRINTMSG(" %6.0f", (double)ld[1]);
if (flag_s)
PRINTMSG(" %6.0f", (double)ld[13]);
PRINTMSG(" %6.0f", (double)ld[2] * 1024);
if (ld[3] > 1e3)
PRINTMSG(" %6.0f", (double)ld[3]);
else
PRINTMSG(" %6.1f", (double)ld[3]);
PRINTMSG(" %6.0f", (double)ld[4]);
if (flag_s)
PRINTMSG(" %6.0f", (double)ld[14]);
PRINTMSG(" %6.0f", (double)ld[5] * 1024);
if (ld[6] > 1e3)
PRINTMSG(" %6.0f", (double)ld[6]);
else
PRINTMSG(" %6.1f", (double)ld[6]);
if (flag_d) {
PRINTMSG(" %6.0f", (double)ld[8]);
if (flag_s)
PRINTMSG(" %6.0f",
(double)ld[15]);
PRINTMSG(" %6.0f",
(double)ld[9] * 1024);
if (ld[10] > 1e3)
PRINTMSG(" %6.0f",
(double)ld[10]);
else
PRINTMSG(" %6.1f",
(double)ld[10]);
}
if (flag_o) {
PRINTMSG(" %6.0f", (double)ld[11]);
if (ld[12] > 1e3)
PRINTMSG(" %6.0f",
(double)ld[12]);
else
PRINTMSG(" %6.1f",
(double)ld[12]);
}
if (ld[7] > HIGH_PCT_BUSY_THRESH)
i = 3;
else if (ld[7] > MEDIUM_PCT_BUSY_THRESH)
i = 2;
else
i = 1;
if (!flag_b)
attron(COLOR_PAIR(i));
PRINTMSG(" %6.1lf", (double)ld[7]);
if (!flag_b) {
attroff(COLOR_PAIR(i));
PRINTMSG("|");
} else
PRINTMSG(" ");
PRINTMSG(" %s", g_name);
if (!flag_b)
clrtoeol();
}
PRINTMSG("\n");
*gsq = *gsp;
}
geom_stats_snapshot_free(sp);
if (flag_b) {
/* We loop extra to make sure we get the information. */
if (!loop)
break;
if (!flag_B)
loop = 0;
else
if (fflush(stdout) == EOF)
goto out;
usleep(flag_I);
continue;
}
getyx(stdscr, cury, curx);
getmaxyx(stdscr, maxy, maxx);
clrtobot();
if (maxy - 1 <= cury)
move(maxy - 1, 0);
refresh();
usleep(flag_I);
while((i = getch()) != ERR) {
switch (i) {
case '>':
flag_I *= 2;
break;
case '<':
flag_I /= 2;
if (flag_I < 1000)
flag_I = 1000;
break;
case 'c':
flag_c = !flag_c;
break;
case 'f':
move(0,0);
clrtoeol();
refresh();
line = el_gets(el, &line_len);
if (line == NULL)
err(1, "el_gets");
if (line_len > 1)
history(hist, &hist_ev, H_ENTER, line);
strlcpy(tmp_f_s, line, sizeof(f_s));
if ((p = strchr(tmp_f_s, '\n')) != NULL)
*p = '\0';
/*
* Fix the terminal. We messed up
* curses idea of the screen by using
* libedit.
*/
clear();
refresh();
cbreak();
noecho();
nonl();
if (regcomp(&tmp_f_re, tmp_f_s, REG_EXTENDED)
!= 0) {
move(0, 0);
printw("Invalid filter");
refresh();
sleep(1);
} else {
strlcpy(f_s, tmp_f_s, sizeof(f_s));
f_re = tmp_f_re;
}
break;
case 'F':
f_s[0] = '\0';
break;
case 'q':
quit = 1;
break;
default:
break;
}
}
}
out:
if (!flag_b) {
el_end(el);
endwin();
}
exit(EX_OK);
}
static void
usage(void)
{
fprintf(stderr, "usage: gstat [-abBcCdps] [-f filter] [-I interval]\n");
exit(EX_USAGE);
/* NOTREACHED */
}