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 3 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, see <http://www.gnu.org/licenses/>.
23 void init_diskdata_desc(PERF_DATA_BLOCK *data)
25 init_perf_counter(&(data->diskInfo.diskObjDesc),
26 &(data->diskInfo.diskObjDesc),
29 "The Logical Disk object consists of counters that show information about disks.",
32 init_perf_counter(&(data->diskInfo.freeMegs),
33 &(data->diskInfo.diskObjDesc),
36 "The amount of available disk space, in megabytes.",
37 PERF_SIZE_LARGE | PERF_TYPE_NUMBER | PERF_NUMBER_DECIMAL | PERF_DISPLAY_NO_SUFFIX,
39 init_perf_counter(&(data->diskInfo.writesPerSec),
40 &(data->diskInfo.diskObjDesc),
43 "The number of writes per second to that disk.",
44 PERF_SIZE_DWORD | PERF_TYPE_COUNTER | PERF_COUNTER_RATE | PERF_DELTA_COUNTER | PERF_DISPLAY_PER_SEC,
46 init_perf_counter(&(data->diskInfo.readsPerSec),
47 &(data->diskInfo.diskObjDesc),
50 "The number of reads of that disk per second.",
51 PERF_SIZE_DWORD | PERF_TYPE_COUNTER | PERF_COUNTER_RATE | PERF_DELTA_COUNTER | PERF_DISPLAY_PER_SEC,
56 void init_num_disks(PERF_DATA_BLOCK *data)
63 if(!(mtab = fopen("/etc/mtab", "r")))
65 perror("init_disk_names: fopen");
72 while(fgets(buf, sizeof(buf), mtab))
74 if(start = strstr(buf, "/dev/"))
76 if(start = strstr(start, "da"))
83 data->diskInfo.numDisks = i;
89 void init_disk_names(PERF_DATA_BLOCK *data)
96 if(!(mtab = fopen("/etc/mtab", "r")))
98 perror("init_disk_names: fopen");
105 while(fgets(buf, sizeof(buf), mtab))
107 if(start = strstr(buf, "/dev/"))
109 if(start = strstr(start, "da"))
112 stop = strstr(start, " ");
113 memcpy(data->diskInfo.mdata[i].name, start, stop - start);
115 stop = strstr(start, " ");
116 memcpy(data->diskInfo.mdata[i].mountpoint, start, stop - start);
127 void get_diskinfo(PERF_DATA_BLOCK *data)
131 struct statfs statfsbuf;
133 char buf[LARGE_BUF], *start;
135 long reads, writes, discard;
137 diskstats = fopen("/proc/diskstats", "r");
140 status = fread(buf, sizeof(char), LARGE_BUF, diskstats);
143 for(i = 0; i < data->diskInfo.numDisks; i++)
145 p = &(data->diskInfo.data[i]);
146 status = statfs(data->diskInfo.mdata[i].mountpoint, &statfsbuf);
147 p->freeMegs = (statfsbuf.f_bfree*statfsbuf.f_bsize)/1048576;
148 start = strstr(buf, data->diskInfo.mdata[i].name);
149 start += strlen(data->diskInfo.mdata[i].name) + 1;
150 num = sscanf(start, "%u %u %u %u",
155 p->writesPerSec = writes;
156 p->readsPerSec = reads;
157 fprintf(stderr, "%s:\t%u\t%u\n",
158 data->diskInfo.mdata[i].mountpoint,
163 void init_disk_data(PERF_DATA_BLOCK *data)
165 init_diskdata_desc(data);
167 init_num_disks(data);
169 data->diskInfo.mdata = calloc(data->diskInfo.numDisks, sizeof(DiskMetaData));
170 if(!data->diskInfo.mdata)
172 fatal("init_disk_data: out of memory");
175 init_disk_names(data);
177 data->diskInfo.data = calloc(data->diskInfo.numDisks, sizeof(DiskData));
178 if(!data->diskInfo.data)
180 fatal("init_disk_data: out of memory");
188 void output_disk_desc(PERF_DATA_BLOCK *data, RuntimeSettings rt)
190 output_perf_desc(data->diskInfo.diskObjDesc, rt);
191 output_perf_desc(data->diskInfo.freeMegs, rt);
192 output_perf_desc(data->diskInfo.writesPerSec, rt);
193 output_perf_desc(data->diskInfo.readsPerSec, rt);
194 output_num_instances(data->diskInfo.diskObjDesc, data->diskInfo.numDisks, rt);
199 void output_diskinfo(PERF_DATA_BLOCK *data, RuntimeSettings rt, int tdb_flags)
203 output_perf_counter(data->diskInfo.freeMegs,
204 data->diskInfo.data[0].freeMegs,
206 output_perf_counter(data->diskInfo.writesPerSec,
207 (unsigned long long)data->diskInfo.data[0].writesPerSec,
209 output_perf_counter(data->diskInfo.readsPerSec,
210 (unsigned long long)data->diskInfo.data[0].readsPerSec,
213 for(i = 0; i < data->diskInfo.numDisks; i++)
215 output_perf_instance(data->diskInfo.diskObjDesc.index,
217 (void *)&(data->diskInfo.data[i]),
219 data->diskInfo.mdata[i].mountpoint,