2 * Unix SMB/CIFS implementation.
3 * Performance Counter Daemon
5 * Copyright (C) Marcin Krzysztof Porwit 2005
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 void init_diskdata_desc(PERF_DATA_BLOCK *data)
26 init_perf_counter(&(data->diskInfo.diskObjDesc),
27 &(data->diskInfo.diskObjDesc),
30 "The Logical Disk object consists of counters that show information about disks.",
33 init_perf_counter(&(data->diskInfo.freeMegs),
34 &(data->diskInfo.diskObjDesc),
37 "The amount of available disk space, in megabytes.",
38 PERF_SIZE_LARGE | PERF_TYPE_NUMBER | PERF_NUMBER_DECIMAL | PERF_DISPLAY_NO_SUFFIX,
40 init_perf_counter(&(data->diskInfo.writesPerSec),
41 &(data->diskInfo.diskObjDesc),
44 "The number of writes per second to that disk.",
45 PERF_SIZE_DWORD | PERF_TYPE_COUNTER | PERF_COUNTER_RATE | PERF_DELTA_COUNTER | PERF_DISPLAY_PER_SEC,
47 init_perf_counter(&(data->diskInfo.readsPerSec),
48 &(data->diskInfo.diskObjDesc),
51 "The number of reads of that disk per second.",
52 PERF_SIZE_DWORD | PERF_TYPE_COUNTER | PERF_COUNTER_RATE | PERF_DELTA_COUNTER | PERF_DISPLAY_PER_SEC,
57 void init_num_disks(PERF_DATA_BLOCK *data)
64 if(!(mtab = fopen("/etc/mtab", "r")))
66 perror("init_disk_names: fopen");
73 while(fgets(buf, sizeof(buf), mtab))
75 if(start = strstr(buf, "/dev/"))
77 if(start = strstr(start, "da"))
84 data->diskInfo.numDisks = i;
90 void init_disk_names(PERF_DATA_BLOCK *data)
97 if(!(mtab = fopen("/etc/mtab", "r")))
99 perror("init_disk_names: fopen");
106 while(fgets(buf, sizeof(buf), mtab))
108 if(start = strstr(buf, "/dev/"))
110 if(start = strstr(start, "da"))
113 stop = strstr(start, " ");
114 memcpy(data->diskInfo.mdata[i].name, start, stop - start);
116 stop = strstr(start, " ");
117 memcpy(data->diskInfo.mdata[i].mountpoint, start, stop - start);
128 void get_diskinfo(PERF_DATA_BLOCK *data)
132 struct statfs statfsbuf;
134 char buf[LARGE_BUF], *start;
136 long reads, writes, discard;
138 diskstats = fopen("/proc/diskstats", "r");
141 status = fread(buf, sizeof(char), LARGE_BUF, diskstats);
144 for(i = 0; i < data->diskInfo.numDisks; i++)
146 p = &(data->diskInfo.data[i]);
147 status = statfs(data->diskInfo.mdata[i].mountpoint, &statfsbuf);
148 p->freeMegs = (statfsbuf.f_bfree*statfsbuf.f_bsize)/1048576;
149 start = strstr(buf, data->diskInfo.mdata[i].name);
150 start += strlen(data->diskInfo.mdata[i].name) + 1;
151 num = sscanf(start, "%u %u %u %u",
156 p->writesPerSec = writes;
157 p->readsPerSec = reads;
158 fprintf(stderr, "%s:\t%u\t%u\n",
159 data->diskInfo.mdata[i].mountpoint,
164 void init_disk_data(PERF_DATA_BLOCK *data)
166 init_diskdata_desc(data);
168 init_num_disks(data);
170 data->diskInfo.mdata = calloc(data->diskInfo.numDisks, sizeof(DiskMetaData));
171 if(!data->diskInfo.mdata)
173 fatal("init_disk_data: out of memory");
176 init_disk_names(data);
178 data->diskInfo.data = calloc(data->diskInfo.numDisks, sizeof(DiskData));
179 if(!data->diskInfo.data)
181 fatal("init_disk_data: out of memory");
189 void output_disk_desc(PERF_DATA_BLOCK *data, RuntimeSettings rt)
191 output_perf_desc(data->diskInfo.diskObjDesc, rt);
192 output_perf_desc(data->diskInfo.freeMegs, rt);
193 output_perf_desc(data->diskInfo.writesPerSec, rt);
194 output_perf_desc(data->diskInfo.readsPerSec, rt);
195 output_num_instances(data->diskInfo.diskObjDesc, data->diskInfo.numDisks, rt);
200 void output_diskinfo(PERF_DATA_BLOCK *data, RuntimeSettings rt, int tdb_flags)
204 output_perf_counter(data->diskInfo.freeMegs,
205 data->diskInfo.data[0].freeMegs,
207 output_perf_counter(data->diskInfo.writesPerSec,
208 (unsigned long long)data->diskInfo.data[0].writesPerSec,
210 output_perf_counter(data->diskInfo.readsPerSec,
211 (unsigned long long)data->diskInfo.data[0].readsPerSec,
214 for(i = 0; i < data->diskInfo.numDisks; i++)
216 output_perf_instance(data->diskInfo.diskObjDesc.index,
218 (void *)&(data->diskInfo.data[i]),
220 data->diskInfo.mdata[i].mountpoint,