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/*
* getkerndata() interface
* e.g. Dynix
*/
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include <net-snmp/agent/hardware/cpu.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/sysctl.h>
#include <sys/vmmeter.h>
#include <vm/vm_param.h>
#include <vm/vm_extern.h>
/*
* Initialise the list of CPUs on the system
* (including descriptions)
*/
void init_cpu_nlist( void ) {
int i;
netsnmp_cpu_info *cpu = netsnmp_cpu_get_byIdx( -1, 1 );
strcpy(cpu->name, "Overall CPU statistics");
cpu_num = tmp_ctl( TMP_NENG, 0 );
if ( cpu_num <= 0 )
cpu_num = 1; /* Single CPU system */
for ( i=0; i < cpu_num; i++ ) {
cpu = netsnmp_cpu_get_byIdx( i, 1 );
sprintf( cpu->name, "cpu%d", i );
}
}
/*
* Load the latest CPU usage statistics
*/
int netsnmp_cpu_arch_load( netsnmp_cache *cache, void *magic ) {
int i;
exp_vmmeter_t *vminfo;
size_t vminfo_size;
netsnmp_cpu_info *cpu = netsnmp_cpu_get_byIdx( -1, 0 );
netsnmp_cpu_info *cpu2;
/* Clear overall stats, ready for summing individual CPUs */
cpu->user_ticks = 0;
cpu->idle_ticks = 0;
cpu->kern_ticks = 0;
cpu->wait_ticks = 0;
cpu->sys2_ticks = 0;
cpu->swapIn = 0;
cpu->swapOut = 0;
cpu->nInterrupts = 0;
cpu->nCtxSwitches = 0;
vminfo_size = cpu_num * sizeof(exp_vmmeter_t);
vminfo = (exp_vmmeter_t *)malloc( vminfo_size );
getkerninfo(VMMETER_DATAID, vminfo, vminfo_size);
for ( i=0; i < cpu_num; i++ ) {
cpu2 = netsnmp_cpu_get_byIdx( i, 0 );
cpu2->user_ticks = (unsigned long)vminfo[i].v_time[V_CPU_USER];
cpu2->idle_ticks = (unsigned long)vminfo[i].v_time[V_CPU_IDLE];
cpu2->kern_ticks = (unsigned long)vminfo[i].v_time[V_CPU_KERNEL];
cpu2->wait_ticks = (unsigned long)vminfo[i].v_time[V_CPU_STREAM];
cpu2->sys2_ticks = (unsigned long)vminfo[i].v_time[V_CPU_KERNEL]+
vminfo[i].v_time[V_CPU_STREAM];
/* nice_ticks, intrpt_ticks, sirq_ticks unused */
/* sum these for the overall stats */
cpu->user_ticks += (unsigned long)vminfo[i].v_time[V_CPU_USER];
cpu->idle_ticks += (unsigned long)vminfo[i].v_time[V_CPU_IDLE];
cpu->kern_ticks += (unsigned long)vminfo[i].v_time[V_CPU_KERNEL];
cpu->wait_ticks += (unsigned long)vminfo[i].v_time[V_CPU_STREAM];
cpu->sys2_ticks += (unsigned long)vminfo[i].v_time[V_CPU_KERNEL]+
vminfo[i].v_time[V_CPU_STREAM];
/*
* Interrupt/Context Switch statistics
* XXX - Do these really belong here ?
*/
cpu->swapIn += (unsigned long)vminfo[i].v_swpin;
cpu->swapOut += (unsigned long)vminfo[i].v_swpout;
cpu->pageIn += (unsigned long)vminfo[i].v_phread;
cpu->pageOut += (unsigned long)vminfo[i].v_phwrite;
cpu->nInterrupts += (unsigned long)vminfo[i].v_intr;
cpu->nCtxSwitches += (unsigned long)vminfo[i].v_swtch;
}
return 0;
}
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