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/*
* Unix SMB/CIFS implementation.
* Performance Counter Daemon
*
* Copyright (C) Marcin Krzysztof Porwit 2005
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "perf.h"
void init_cpudata_desc(PERF_DATA_BLOCK *data)
{
init_perf_counter(&(data->cpuInfo.cpuObjDesc),
&(data->cpuInfo.cpuObjDesc),
get_counter_id(data),
"Processor",
"The Processor object consists of counters that describe the behavior of the CPU.",
0,
PERF_OBJECT);
init_perf_counter(&(data->cpuInfo.userCPU),
&(data->cpuInfo.cpuObjDesc),
get_counter_id(data),
"\% User CPU Utilization",
"\% User CPU Utilization is the percentage of the CPU used by processes executing user code.",
PERF_SIZE_LARGE | PERF_TYPE_COUNTER | PERF_COUNTER_RATE | PERF_TIMER_100NS | PERF_DELTA_COUNTER | PERF_DISPLAY_PERCENT,
PERF_COUNTER);
init_perf_counter(&(data->cpuInfo.systemCPU),
&(data->cpuInfo.cpuObjDesc),
get_counter_id(data),
"\% System CPU Utilization",
"\% System CPU Utilization is the percentage of the CPU used by processes doing system calls.",
PERF_SIZE_LARGE | PERF_TYPE_COUNTER | PERF_COUNTER_RATE | PERF_TIMER_100NS | PERF_DELTA_COUNTER | PERF_DISPLAY_PERCENT,
PERF_COUNTER);
init_perf_counter(&(data->cpuInfo.niceCPU),
&(data->cpuInfo.cpuObjDesc),
get_counter_id(data),
"\% Nice CPU Utilization",
"\% Nice CPU Utilization is the percentage of the CPU used by processes running in nice mode.",
PERF_SIZE_LARGE | PERF_TYPE_COUNTER | PERF_COUNTER_RATE | PERF_TIMER_100NS | PERF_DELTA_COUNTER | PERF_DISPLAY_NOSHOW,
PERF_COUNTER);
init_perf_counter(&(data->cpuInfo.idleCPU),
&(data->cpuInfo.cpuObjDesc),
get_counter_id(data),
"\% Idle CPU",
"\% Idle CPU is the percentage of the CPU not doing any work.",
PERF_SIZE_LARGE | PERF_TYPE_COUNTER | PERF_COUNTER_RATE | PERF_TIMER_100NS | PERF_DELTA_COUNTER | PERF_DISPLAY_NOSHOW,
PERF_COUNTER);
return;
}
void get_cpuinfo(PERF_DATA_BLOCK *data)
{
int num, i;
unsigned int cpuid;
char buf[PROC_BUF];
static FILE *fp = NULL;
if(!fp)
{
if(!(fp = fopen("/proc/stat", "r")))
{
perror("get_cpuinfo: fopen");
exit(1);
}
}
rewind(fp);
fflush(fp);
/* Read in the first line and discard it -- that has the CPU summary */
if(!fgets(buf, sizeof(buf), fp))
{
perror("get_cpuinfo: fgets");
exit(1);
}
for(i = 0; i < data->cpuInfo.numCPUs; i++)
{
if(!fgets(buf, sizeof(buf), fp))
{
perror("get_cpuinfo: fgets");
exit(1);
}
num = sscanf(buf, "cpu%u %Lu %Lu %Lu %Lu",
&cpuid,
&data->cpuInfo.data[i].user,
&data->cpuInfo.data[i].nice,
&data->cpuInfo.data[i].system,
&data->cpuInfo.data[i].idle);
if(i != cpuid)
{
perror("get_cpuinfo: /proc/stat inconsistent?");
exit(1);
}
/*
Alternate way of doing things:
struct tms buffer;
data->PerfTime100nSec = times(&buffer);
*/
data->PerfTime100nSec += data->cpuInfo.data[i].user +
data->cpuInfo.data[i].nice +
data->cpuInfo.data[i].system +
data->cpuInfo.data[i].idle;
}
data->PerfTime100nSec /= data->cpuInfo.numCPUs;
return;
}
void init_cpu_data(PERF_DATA_BLOCK *data)
{
data->cpuInfo.data = calloc(data->cpuInfo.numCPUs, sizeof(*data->cpuInfo.data));
if(!data->cpuInfo.data)
{
perror("init_cpu_data: out of memory");
exit(1);
}
init_cpudata_desc(data);
get_cpuinfo(data);
return;
}
void output_cpu_desc(PERF_DATA_BLOCK *data, RuntimeSettings rt)
{
output_perf_desc(data->cpuInfo.cpuObjDesc, rt);
output_perf_desc(data->cpuInfo.userCPU, rt);
output_perf_desc(data->cpuInfo.niceCPU, rt);
output_perf_desc(data->cpuInfo.systemCPU, rt);
output_perf_desc(data->cpuInfo.idleCPU, rt);
if(data->cpuInfo.numCPUs > 1)
output_num_instances(data->cpuInfo.cpuObjDesc, data->cpuInfo.numCPUs + 1, rt);
return;
}
void output_cpuinfo(PERF_DATA_BLOCK *data, RuntimeSettings rt, int tdb_flags)
{
int i;
char buf[NAME_LEN];
output_perf_counter(data->cpuInfo.userCPU,
data->cpuInfo.data[0].user,
rt, tdb_flags);
output_perf_counter(data->cpuInfo.systemCPU,
data->cpuInfo.data[0].system,
rt, tdb_flags);
output_perf_counter(data->cpuInfo.niceCPU,
data->cpuInfo.data[0].nice,
rt, tdb_flags);
output_perf_counter(data->cpuInfo.idleCPU,
data->cpuInfo.data[0].idle,
rt, tdb_flags);
if(data->cpuInfo.numCPUs > 1)
{
for(i = 0; i < data->cpuInfo.numCPUs; i++)
{
memset(buf, 0, NAME_LEN);
sprintf(buf, "cpu%d", i);
output_perf_instance(data->cpuInfo.cpuObjDesc.index,
i,
(void *)&(data->cpuInfo.data[i]),
sizeof(data->cpuInfo.data[i]),
buf, rt, tdb_flags);
}
memset(buf, 0, NAME_LEN);
sprintf(buf, "_Total");
output_perf_instance(data->cpuInfo.cpuObjDesc.index,
i,
(void *)&(data->cpuInfo.data[i]),
sizeof(data->cpuInfo.data[i]),
buf, rt, tdb_flags);
}
return;
}
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