1 |
|
|
/* $OpenBSD: iostat.c,v 1.45 2015/01/16 00:03:37 deraadt Exp $ */ |
2 |
|
|
/* $NetBSD: iostat.c,v 1.5 1996/05/10 23:16:35 thorpej Exp $ */ |
3 |
|
|
|
4 |
|
|
/* |
5 |
|
|
* Copyright (c) 1980, 1992, 1993 |
6 |
|
|
* The Regents of the University of California. All rights reserved. |
7 |
|
|
* |
8 |
|
|
* Redistribution and use in source and binary forms, with or without |
9 |
|
|
* modification, are permitted provided that the following conditions |
10 |
|
|
* are met: |
11 |
|
|
* 1. Redistributions of source code must retain the above copyright |
12 |
|
|
* notice, this list of conditions and the following disclaimer. |
13 |
|
|
* 2. Redistributions in binary form must reproduce the above copyright |
14 |
|
|
* notice, this list of conditions and the following disclaimer in the |
15 |
|
|
* documentation and/or other materials provided with the distribution. |
16 |
|
|
* 3. Neither the name of the University nor the names of its contributors |
17 |
|
|
* may be used to endorse or promote products derived from this software |
18 |
|
|
* without specific prior written permission. |
19 |
|
|
* |
20 |
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
21 |
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
22 |
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
23 |
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
24 |
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
25 |
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
26 |
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
27 |
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
28 |
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
29 |
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
30 |
|
|
* SUCH DAMAGE. |
31 |
|
|
*/ |
32 |
|
|
|
33 |
|
|
#include <sys/types.h> |
34 |
|
|
#include <sys/mount.h> |
35 |
|
|
#include <sys/signal.h> |
36 |
|
|
#include <sys/sched.h> |
37 |
|
|
#include <sys/sysctl.h> |
38 |
|
|
#include <sys/time.h> |
39 |
|
|
|
40 |
|
|
#include <string.h> |
41 |
|
|
#include <stdlib.h> |
42 |
|
|
#include <paths.h> |
43 |
|
|
#include "systat.h" |
44 |
|
|
|
45 |
|
|
#include "dkstats.h" |
46 |
|
|
extern struct _disk cur, last; |
47 |
|
|
struct bcachestats bclast, bccur; |
48 |
|
|
|
49 |
|
|
static double etime; |
50 |
|
|
|
51 |
|
|
void showtotal(void); |
52 |
|
|
void showdrive(int); |
53 |
|
|
void print_io(void); |
54 |
|
|
int read_io(void); |
55 |
|
|
int select_io(void); |
56 |
|
|
void showbcache(void); |
57 |
|
|
|
58 |
|
|
#define ATIME(x,y) ((double)x[y].tv_sec + \ |
59 |
|
|
((double)x[y].tv_usec / (double)1000000)) |
60 |
|
|
|
61 |
|
|
|
62 |
|
|
field_def fields_io[] = { |
63 |
|
|
{"DEVICE", 8, 16, 1, FLD_ALIGN_LEFT, -1, 0, 0, 0}, |
64 |
|
|
{"READ", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, |
65 |
|
|
{"WRITE", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, |
66 |
|
|
{"RTPS", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, |
67 |
|
|
{"WTPS", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, |
68 |
|
|
{"SEC", 5, 8, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, |
69 |
|
|
{"", 8, 19, 1, FLD_ALIGN_RIGHT, -1, 0, 0, 0}, |
70 |
|
|
{"STATS", 12, 15, 1, FLD_ALIGN_LEFT, -1, 0, 0, 0} |
71 |
|
|
}; |
72 |
|
|
|
73 |
|
|
#define FLD_IO_DEVICE FIELD_ADDR(fields_io,0) |
74 |
|
|
#define FLD_IO_READ FIELD_ADDR(fields_io,1) |
75 |
|
|
#define FLD_IO_WRITE FIELD_ADDR(fields_io,2) |
76 |
|
|
#define FLD_IO_RTPS FIELD_ADDR(fields_io,3) |
77 |
|
|
#define FLD_IO_WTPS FIELD_ADDR(fields_io,4) |
78 |
|
|
#define FLD_IO_SEC FIELD_ADDR(fields_io,5) |
79 |
|
|
|
80 |
|
|
/* This is a hack that stuffs bcache statistics to the last two columns! */ |
81 |
|
|
#define FLD_IO_SVAL FIELD_ADDR(fields_io,6) |
82 |
|
|
#define FLD_IO_SSTR FIELD_ADDR(fields_io,7) |
83 |
|
|
|
84 |
|
|
/* Define views */ |
85 |
|
|
field_def *view_io_0[] = { |
86 |
|
|
FLD_IO_DEVICE, FLD_IO_READ, FLD_IO_WRITE, FLD_IO_RTPS, |
87 |
|
|
FLD_IO_WTPS, FLD_IO_SEC, FLD_IO_SVAL, FLD_IO_SSTR, NULL |
88 |
|
|
}; |
89 |
|
|
|
90 |
|
|
|
91 |
|
|
/* Define view managers */ |
92 |
|
|
struct view_manager iostat_mgr = { |
93 |
|
|
"Iostat", select_io, read_io, NULL, print_header, |
94 |
|
|
print_io, keyboard_callback, NULL, NULL |
95 |
|
|
}; |
96 |
|
|
|
97 |
|
|
|
98 |
|
|
field_view views_io[] = { |
99 |
|
|
{view_io_0, "iostat", '2', &iostat_mgr}, |
100 |
|
|
{NULL, NULL, 0, NULL} |
101 |
|
|
}; |
102 |
|
|
|
103 |
|
|
|
104 |
|
|
int |
105 |
|
|
select_io(void) |
106 |
|
|
{ |
107 |
|
|
num_disp = cur.dk_ndrive + 1; |
108 |
|
|
return (0); |
109 |
|
|
} |
110 |
|
|
|
111 |
|
|
int |
112 |
|
|
read_io(void) |
113 |
|
|
{ |
114 |
|
|
int mib[3]; |
115 |
|
|
size_t size; |
116 |
|
|
|
117 |
|
|
dkreadstats(); |
118 |
|
|
dkswap(); |
119 |
|
|
num_disp = cur.dk_ndrive + 1; |
120 |
|
|
|
121 |
|
|
bclast = bccur; |
122 |
|
|
mib[0] = CTL_VFS; |
123 |
|
|
mib[1] = VFS_GENERIC; |
124 |
|
|
mib[2] = VFS_BCACHESTAT; |
125 |
|
|
size = sizeof(bccur); |
126 |
|
|
|
127 |
|
|
if (sysctl(mib, 3, &bccur, &size, NULL, 0) < 0) |
128 |
|
|
error("cannot get vfs.bcachestat"); |
129 |
|
|
|
130 |
|
|
if (bclast.numbufs == 0) |
131 |
|
|
bclast = bccur; |
132 |
|
|
|
133 |
|
|
return 0; |
134 |
|
|
} |
135 |
|
|
|
136 |
|
|
|
137 |
|
|
void |
138 |
|
|
print_io(void) |
139 |
|
|
{ |
140 |
|
|
int n, count = 0; |
141 |
|
|
|
142 |
|
|
int curr; |
143 |
|
|
etime = naptime; |
144 |
|
|
|
145 |
|
|
/* XXX engine internals: save and restore curr_line for bcache */ |
146 |
|
|
curr = curr_line; |
147 |
|
|
|
148 |
|
|
for (n = dispstart; n < num_disp - 1; n++) { |
149 |
|
|
showdrive(n); |
150 |
|
|
count++; |
151 |
|
|
if (maxprint > 0 && count >= maxprint) |
152 |
|
|
break; |
153 |
|
|
} |
154 |
|
|
|
155 |
|
|
|
156 |
|
|
if (maxprint == 0 || count < maxprint) |
157 |
|
|
showtotal(); |
158 |
|
|
|
159 |
|
|
curr_line = curr; |
160 |
|
|
showbcache(); |
161 |
|
|
} |
162 |
|
|
|
163 |
|
|
int |
164 |
|
|
initiostat(void) |
165 |
|
|
{ |
166 |
|
|
field_view *v; |
167 |
|
|
|
168 |
|
|
dkinit(1); |
169 |
|
|
dkreadstats(); |
170 |
|
|
|
171 |
|
|
bzero(&bccur, sizeof(bccur)); |
172 |
|
|
|
173 |
|
|
for (v = views_io; v->name != NULL; v++) |
174 |
|
|
add_view(v); |
175 |
|
|
|
176 |
|
|
return(1); |
177 |
|
|
} |
178 |
|
|
|
179 |
|
|
void |
180 |
|
|
showtotal(void) |
181 |
|
|
{ |
182 |
|
|
double rsum, wsum, rtsum, wtsum, mssum; |
183 |
|
|
int dn; |
184 |
|
|
|
185 |
|
|
rsum = wsum = rtsum = wtsum = mssum = 0.0; |
186 |
|
|
|
187 |
|
|
for (dn = 0; dn < cur.dk_ndrive; dn++) { |
188 |
|
|
rsum += cur.dk_rbytes[dn] / etime; |
189 |
|
|
wsum += cur.dk_wbytes[dn] / etime; |
190 |
|
|
rtsum += cur.dk_rxfer[dn] / etime; |
191 |
|
|
wtsum += cur.dk_wxfer[dn] / etime; |
192 |
|
|
mssum += ATIME(cur.dk_time, dn) / etime; |
193 |
|
|
} |
194 |
|
|
|
195 |
|
|
print_fld_str(FLD_IO_DEVICE, "Totals"); |
196 |
|
|
print_fld_size(FLD_IO_READ, rsum); |
197 |
|
|
print_fld_size(FLD_IO_WRITE, wsum); |
198 |
|
|
print_fld_size(FLD_IO_RTPS, rtsum); |
199 |
|
|
print_fld_size(FLD_IO_WTPS, wtsum); |
200 |
|
|
print_fld_float(FLD_IO_SEC, mssum, 1); |
201 |
|
|
|
202 |
|
|
end_line(); |
203 |
|
|
} |
204 |
|
|
|
205 |
|
|
void |
206 |
|
|
showdrive(int dn) |
207 |
|
|
{ |
208 |
|
|
print_fld_str(FLD_IO_DEVICE, cur.dk_name[dn]); |
209 |
|
|
print_fld_size(FLD_IO_READ, cur.dk_rbytes[dn]/etime); |
210 |
|
|
print_fld_size(FLD_IO_WRITE, cur.dk_wbytes[dn]/ etime); |
211 |
|
|
print_fld_size(FLD_IO_RTPS, cur.dk_rxfer[dn] / etime); |
212 |
|
|
print_fld_size(FLD_IO_WTPS, cur.dk_wxfer[dn] / etime); |
213 |
|
|
print_fld_float(FLD_IO_SEC, ATIME(cur.dk_time, dn) / etime, 1); |
214 |
|
|
|
215 |
|
|
end_line(); |
216 |
|
|
} |
217 |
|
|
|
218 |
|
|
void |
219 |
|
|
showbcache(void) |
220 |
|
|
{ |
221 |
|
|
print_fld_str(FLD_IO_SSTR, "total pages"); |
222 |
|
|
print_fld_ssize(FLD_IO_SVAL, bccur.numbufpages); |
223 |
|
|
end_line(); |
224 |
|
|
|
225 |
|
|
print_fld_str(FLD_IO_SSTR, "dirty pages"); |
226 |
|
|
print_fld_ssize(FLD_IO_SVAL, bccur.numdirtypages); |
227 |
|
|
end_line(); |
228 |
|
|
|
229 |
|
|
print_fld_str(FLD_IO_SSTR, "delwri bufs"); |
230 |
|
|
print_fld_ssize(FLD_IO_SVAL, bccur.delwribufs); |
231 |
|
|
end_line(); |
232 |
|
|
|
233 |
|
|
print_fld_str(FLD_IO_SSTR, "busymap bufs"); |
234 |
|
|
print_fld_ssize(FLD_IO_SVAL, bccur.busymapped); |
235 |
|
|
end_line(); |
236 |
|
|
|
237 |
|
|
print_fld_str(FLD_IO_SSTR, "avail kvaslots"); |
238 |
|
|
print_fld_ssize(FLD_IO_SVAL, bccur.kvaslots_avail); |
239 |
|
|
end_line(); |
240 |
|
|
|
241 |
|
|
print_fld_str(FLD_IO_SSTR, "kvaslots"); |
242 |
|
|
print_fld_ssize(FLD_IO_SVAL, bccur.kvaslots); |
243 |
|
|
end_line(); |
244 |
|
|
|
245 |
|
|
print_fld_str(FLD_IO_SSTR, "pending writes"); |
246 |
|
|
print_fld_ssize(FLD_IO_SVAL, bccur.pendingwrites); |
247 |
|
|
end_line(); |
248 |
|
|
|
249 |
|
|
print_fld_str(FLD_IO_SSTR, "pending reads"); |
250 |
|
|
print_fld_ssize(FLD_IO_SVAL, bccur.pendingreads); |
251 |
|
|
end_line(); |
252 |
|
|
|
253 |
|
|
print_fld_str(FLD_IO_SSTR, "cache hits"); |
254 |
|
|
print_fld_ssize(FLD_IO_SVAL, bccur.cachehits - bclast.cachehits); |
255 |
|
|
end_line(); |
256 |
|
|
} |