/*
* Initialise the list of CPUs on the system
* (including descriptions)
*/
void init_cpu_sysctl( void ) {
int i, n;
size_t siz;
int ncpu_mib[] = { CTL_HW, HW_NCPU };
#if !(defined(__NetBSD__) && ( defined(__i386__) || defined(__x86_64__) ) )
int model_mib[] = { CTL_HW, HW_MODEL };
#endif
char descr[ SNMP_MAXBUF ];
netsnmp_cpu_info *cpu = netsnmp_cpu_get_byIdx( -1, 1 );
strcpy(cpu->name, "Overall CPU statistics");
siz = sizeof(n);
sysctl(ncpu_mib, 2, &n, &siz, NULL, 0);
if ( n <= 0 )
n = 1; /* Single CPU system */
siz = sizeof(descr);
#if defined(__NetBSD__) && ( defined(__i386__) || defined(__x86_64__) )
sysctlbyname("machdep.cpu_brand", descr, &siz, NULL, 0);
#else
sysctl(model_mib, 2, descr, &siz, NULL, 0);
#endif
for ( i = 0; i < n; i++ ) {
cpu = netsnmp_cpu_get_byIdx( i, 1 );
cpu->status = 2; /* running */
sprintf( cpu->name, "cpu%d", i );
sprintf( cpu->descr, "%s", descr );
}
cpu_num = n;
}
/*
* Load the latest CPU usage statistics
*/
int netsnmp_cpu_arch_load( netsnmp_cache *cache, void *magic ) {
struct vmmeter vmm;
size_t len;
struct kinfo_cputime cp_time;
netsnmp_cpu_info *cpu = netsnmp_cpu_get_byIdx( -1, 0 );
kinfo_get_sched_cputime(&cp_time);
len = sizeof(vmm);
sysctlbyname("vm.vmmeter", &vmm, &len, NULL, 0);
cpu->user_ticks = cp_time.cp_user;
cpu->nice_ticks = cp_time.cp_nice;
cpu->sys2_ticks = cp_time.cp_sys + cp_time.cp_intr;
cpu->idle_ticks = cp_time.cp_idle;
cpu->kern_ticks = cp_time.cp_sys;
cpu->intrpt_ticks = cp_time.cp_intr;
cpu->swapIn = vmm.v_swappgsin + vmm.v_vnodepgsin;
cpu->swapOut = vmm.v_swappgsout + vmm.v_vnodepgsout;
cpu->nInterrupts = vmm.v_intr;
cpu->nCtxSwitches = vmm.v_swtch;
/* Copy "overall" figures to cpu0 entry */
_cpu_copy_stats( cpu );
return 0;
}
void _cpu_copy_stats( netsnmp_cpu_info *cpu )
{
netsnmp_cpu_info *cpu2;
/*
* Copy "overall" statistics to the 'cpu0' entry
* on single CPU systems where this isn't done automatically
*/
cpu2 = netsnmp_cpu_get_byIdx( 0, 1 );
if (!cpu || !cpu2) return;
cpu2->user_ticks = cpu->user_ticks;
cpu2->nice_ticks = cpu->nice_ticks;
cpu2->sys_ticks = cpu->sys_ticks;
cpu2->sys2_ticks = cpu->sys2_ticks;
cpu2->idle_ticks = cpu->idle_ticks;
cpu2->wait_ticks = cpu->wait_ticks;
cpu2->kern_ticks = cpu->kern_ticks;
cpu2->intrpt_ticks = cpu->intrpt_ticks;
cpu2->sirq_ticks = cpu->sirq_ticks;
cpu2->nInterrupts = cpu->nInterrupts;
cpu2->nCtxSwitches = cpu->nCtxSwitches;
cpu2->swapIn = cpu->swapIn;
cpu2->swapOut = cpu->swapOut;
cpu2->pageIn = cpu->pageIn;
cpu2->pageOut = cpu->pageOut;
}
/*
* Initialise the list of CPUs on the system
* (including descriptions)
*/
void init_cpu_kstat( void ) {
int i = 0, n = 0, clock, state_begin;
char ctype[15], ftype[15], state[10];
kstat_t *ksp;
kstat_named_t *ks_data;
netsnmp_cpu_info *cpu = netsnmp_cpu_get_byIdx( -1, 1 );
strcpy(cpu->name, "Overall CPU statistics");
if (kstat_fd == NULL)
kstat_fd = kstat_open();
kstat_chain_update( kstat_fd );
DEBUGMSGTL(("cpu", "cpu_kstat init\n "));
for (ksp = kstat_fd->kc_chain; ksp != NULL; ksp = ksp->ks_next) {
if (ksp->ks_flags & KSTAT_FLAG_INVALID)
continue;
if ((strcmp(ksp->ks_module, "cpu_info") == 0) &&
(strcmp(ksp->ks_class, "misc" ) == 0)) {
kstat_read(kstat_fd, ksp, NULL );
n++;
clock = 999999;
memset(ctype, 0, sizeof(ctype));
memset(ftype, 0, sizeof(ftype));
memset(state, 0, sizeof(state));
for (i=0, ks_data = ksp->ks_data; i < ksp->ks_ndata; i++, ks_data++) {
if ( strcmp( ks_data->name, "state" ) == 0 ) {
strlcpy(state, ks_data->value.c, sizeof(state));
} else if ( strcmp( ks_data->name, "state_begin" ) == 0 ) {
state_begin = ks_data->value.i32;
} else if ( strcmp( ks_data->name, "cpu_type" ) == 0 ) {
strlcpy(ctype, ks_data->value.c, sizeof(ctype));
} else if ( strcmp( ks_data->name, "fpu_type" ) == 0 ) {
strlcpy(ftype, ks_data->value.c, sizeof(ftype));
} else if ( strcmp( ks_data->name, "clock_MHz" ) == 0 ) {
clock = ks_data->value.i32;
}
}
i = ksp->ks_instance;
cpu = netsnmp_cpu_get_byIdx( i, 1 );
sprintf( cpu->name, "cpu%d", i );
sprintf( cpu->descr, "CPU %d Sun %d MHz %s with %s FPU %s",
i, clock, ctype, ftype, state );
cpu->status = _cpu_status(state); /* XXX - or in 'n_c_a_load' ? */
}
}
cpu_num = i;
}
/*
* Initialise the list of CPUs on the system
* (including descriptions)
*/
void init_cpu_perfstat( void ) {
int i;
perfstat_id_t name;
perfstat_cpu_t *cs2;
netsnmp_cpu_info *cpu = netsnmp_cpu_get_byIdx( -1, 1 );
strcpy(cpu->name, "Overall CPU statistics");
cpu_num = perfstat_cpu( NULL, NULL, sizeof(perfstat_cpu_t), 0 );
cs2 = (perfstat_cpu_t*)malloc( cpu_num*sizeof(perfstat_cpu_t));
strcpy( name.name, "");
if (perfstat_cpu(&name, cs2, sizeof(perfstat_cpu_t), cpu_num) > 0) {
for ( i = 0; i < cpu_num; i++ ) {
cpu = netsnmp_cpu_get_byIdx( i, 1 );
sprintf( cpu->name, cs2[i].name);
}
}
free(cs2);
}
/*
* Initialise the list of CPUs on the system
* (including descriptions)
*/
void init_cpu_kinfo( void ) {
netsnmp_cpu_info *cpu;
int i;
size_t len;
char descr[ SNMP_MAXBUF ];
cpu = netsnmp_cpu_get_byIdx( -1, 1 );
strcpy(cpu->name, "Overall CPU statistics");
kinfo_get_cpus(&cpu_num);
len = sizeof(descr);
sysctlbyname("hw.model", descr, &len, NULL, 0);
for ( i = 0; i < cpu_num; i++ ) {
cpu = netsnmp_cpu_get_byIdx( i, 1 );
cpu->status = 2; /* running */
sprintf(cpu->name, "cpu%d", i);
sprintf(cpu->descr, "%s", descr);
}
}
/*
* Initialise the list of CPUs on the system
* (including descriptions)
*
* XXX - Assumes x86-style /proc/cpuinfo format
* See CPUinfo database at
* http://www.rush3d.com/gcc/
* for info on alternative styles
*/
void init_cpu_linux( void ) {
FILE *fp;
char buf[1024], *cp;
int i, n = 0;
netsnmp_cpu_info *cpu = netsnmp_cpu_get_byIdx( -1, 1 );
strcpy(cpu->name, "Overall CPU statistics");
fp = fopen( CPU_FILE, "r" );
if (!fp) {
snmp_log(LOG_ERR, "Can't open procinfo file %s\n", CPU_FILE);
return;
}
while ( fgets( buf, sizeof(buf), fp)) {
if ( sscanf( buf, "processor : %d", &i ) == 1) {
n++;
cpu = netsnmp_cpu_get_byIdx( i, 1 );
cpu->status = 2; /* running */
sprintf( cpu->name, "cpu%d", i );
#if defined(__s390__) || defined(__s390x__)
strcat( cpu->descr, "An S/390 CPU" );
#endif
}
#ifdef DESCR_FIELD
if (!strncmp( buf, DESCR_FIELD, strlen(DESCR_FIELD))) {
cp = strchr( buf, ':' );
strcpy( cpu->descr, cp+2 );
cp = strchr( cpu->descr, '\n' );
*cp = 0;
}
#endif
#ifdef DESCR2_FIELD
if (!strncmp( buf, DESCR2_FIELD, strlen(DESCR2_FIELD))) {
cp = strchr( buf, ':' );
strcat( cpu->descr, cp );
cp = strchr( cpu->descr, '\n' );
*cp = 0;
}
#endif
}
fclose(fp);
cpu_num = n;
}
/*
* Load the latest CPU usage statistics
*/
int netsnmp_cpu_arch_load( netsnmp_cache *cache, void *magic ) {
long cpu_stats[CPUSTATES];
struct vmmeter mem_stats;
netsnmp_cpu_info *cpu = netsnmp_cpu_get_byIdx( -1, 0 );
auto_nlist( CPU_SYMBOL, (char *) cpu_stats, sizeof(cpu_stats));
auto_nlist( MEM_SYMBOL, (char *)&mem_stats, sizeof(mem_stats));
cpu->user_ticks = (unsigned long long)cpu_stats[CP_USER];
cpu->nice_ticks = (unsigned long long)cpu_stats[CP_NICE];
cpu->sys2_ticks = (unsigned long long)cpu_stats[CP_SYS]+cpu_stats[CP_INTR];
cpu->idle_ticks = (unsigned long long)cpu_stats[CP_IDLE];
cpu->kern_ticks = (unsigned long long)cpu_stats[CP_SYS];
cpu->intrpt_ticks = (unsigned long long)cpu_stats[CP_INTR];
/* wait_ticks, sirq_ticks unused */
/*
* Interrupt/Context Switch statistics
* XXX - Do these really belong here ?
*/
#if defined(openbsd2) || defined(darwin)
cpu->swapIn = (unsigned long long)mem_stats.v_swpin;
cpu->swapOut = (unsigned long long)mem_stats.v_swpout;
#else
cpu->swapIn = (unsigned long long)mem_stats.v_swappgsin+mem_stats.v_vnodepgsin;
cpu->swapOut = (unsigned long long)mem_stats.v_swappgsout+mem_stats.v_vnodepgsout;
#endif
cpu->nInterrupts = (unsigned long long)mem_stats.v_intr;
cpu->nCtxSwitches = (unsigned long long)mem_stats.v_swtch;
#ifdef PER_CPU_INFO
for ( i = 0; i < n; i++ ) {
cpu = netsnmp_cpu_get_byIdx( i, 0 );
/* XXX - per-CPU statistics */
}
#else
/* Copy "overall" figures to cpu0 entry */
_cpu_copy_stats( cpu );
#endif
return 0;
}
/*
* Initialise the list of CPUs on the system
* (including descriptions)
*/
void init_cpu_nlist( void ) {
int n;
size_t i;
int ncpu_mib[] = { CTL_HW, HW_NCPU };
int model_mib[] = { CTL_HW, HW_MODEL };
char descr[ SNMP_MAXBUF ];
netsnmp_cpu_info *cpu = netsnmp_cpu_get_byIdx( -1, 1 );
strcpy(cpu->name, "Overall CPU statistics");
i = sizeof(n);
sysctl(ncpu_mib, 2, &n, &i, NULL, 0);
i = sizeof(descr);
sysctl(model_mib, 2, descr, &i, NULL, 0);
if ( n <= 0 )
n = 1; /* Single CPU system */
for ( i=0; i<n; i++ ) {
cpu = netsnmp_cpu_get_byIdx( i, 1 );
cpu->status = 2; /* running */
sprintf(cpu->name, "cpu%d", i);
sprintf(cpu->descr, "%s", descr);
}
cpu_num = n;
}
u_char *
var_hrproc(struct variable * vp,
oid * name,
size_t * length,
int exact, size_t * var_len, WriteMethod ** write_method)
{
int proc_idx;
unsigned long long value;
netsnmp_cpu_info *cpu;
proc_idx =
header_hrproc(vp, name, length, exact, var_len, write_method);
if (proc_idx == MATCH_FAILED)
return NULL;
switch (vp->magic) {
case HRPROC_ID:
*var_len = nullOidLen;
return (u_char *) nullOid;
case HRPROC_LOAD:
cpu = netsnmp_cpu_get_byIdx( proc_idx & HRDEV_TYPE_MASK, 0 );
if ( !cpu || !cpu->history || !cpu->history[0].total_hist ||
( cpu->history[0].total_hist == cpu->total_ticks ))
return NULL;
value = (cpu->idle_ticks - cpu->history[0].idle_hist)*100;
value /= (cpu->total_ticks - cpu->history[0].total_hist);
long_return = 100 - value;
if (long_return < 0)
long_return = 0;
return (u_char *) & long_return;
default:
DEBUGMSGTL(("host/hr_proc", "unknown sub-id %d in var_hrproc\n",
vp->magic));
}
return NULL;
}
const char *
describe_proc(int idx)
{
netsnmp_cpu_info *cpu = netsnmp_cpu_get_byIdx( idx & HRDEV_TYPE_MASK, 0 );
return (cpu ? cpu->descr : NULL );
}
static unsigned vmstat (int iindex)
{
double duse, dsys, didl, ddiv, divo2;
double druse, drnic, drsys, dridl;
unsigned int hertz;
double ddiv2;
netsnmp_cpu_info *cpu;
netsnmp_cpu_load ();
cpu = netsnmp_cpu_get_byIdx (-1, 0);
duse = cpu->user_ticks + cpu->nice_ticks;
dsys = cpu->sys_ticks;
didl = cpu->idle_ticks;
ddiv = duse + dsys + didl;
hertz = sysconf (_SC_CLK_TCK); /* get ticks/s from system */
divo2 = ddiv / 2;
druse = cpu->user_ticks;
drnic = cpu->nice_ticks;
drsys = cpu->sys_ticks;
dridl = cpu->idle_ticks;
ddiv2 = ddiv + cpu->wait_ticks + cpu->intrpt_ticks + cpu->sirq_ticks;
if (cpu->history)
{
duse -= (cpu->history[0].user_hist + cpu->history[0].nice_hist);
dsys -= cpu->history[0].sys_hist;
didl -= cpu->history[0].idle_hist;
ddiv2 -= cpu->history[0].total_hist;
}
if (!ddiv)
ddiv = 1; /* Protect against division-by-0 */
switch (iindex)
{
case swapin:
return (cpu->swapIn * 4 * hertz + divo2) / ddiv;
case swapout:
return (cpu->swapOut * 4 * hertz + divo2) / ddiv;
case iosent:
return (cpu->pageIn * hertz + divo2) / ddiv;
case ioreceive:
return (cpu->pageOut * hertz + divo2) / ddiv;
case sysinterrupts:
return (cpu->nInterrupts * hertz + divo2) / ddiv;
case syscontext:
return (cpu->nCtxSwitches * hertz + divo2) / ddiv;
case cpuuser:
return (ddiv2 ? 100 * duse / ddiv2 : 0);
case cpusystem:
return (ddiv2 ? 100 * dsys / ddiv2 : 0);
case cpuidle:
return (ddiv2 ? 100 * didl / ddiv2 : 0);
case cpurawuser:
return druse;
case cpurawnice:
return drnic;
case cpurawsystem:
return drsys;
case cpurawidle:
return dridl;
case rawinterrupts:
return cpu->nInterrupts;
case rawcontext:
return cpu->nCtxSwitches;
case cpurawwait:
return cpu->wait_ticks;
case cpurawinter:
return cpu->intrpt_ticks;
case cpurawsoft:
return cpu->sirq_ticks;
case rawiosent:
return cpu->pageOut * 2;
case rawioreceive:
return cpu->pageIn * 2;
case rawswapin:
return cpu->swapIn;
case rawswapout:
return cpu->swapOut;
default:
return -1;
}
}
/*
* Load the latest CPU usage statistics
*/
int netsnmp_cpu_arch_load( netsnmp_cache *cache, void *magic ) {
#ifdef NETSNMP_KERN_MCPU
int i;
#endif
/*
* Strictly speaking, BSDi ought to use
* "struct cpustats cpu_stats"
* but this array was used in the previous code, and
* is correct for the {Open,Net}BSD versions too.
* Don't fight it, Dave - go with the flow....
*/
NETSNMP_CPU_STATS cpu_stats[CPUSTATES];
#if !defined(__FreeBSD__) || defined(__FreeBSD_kernel__) && !defined(__NetBSD__)
int cpu_mib[] = { CTL_KERN, NETSNMP_KERN_CPU };
#endif
size_t cpu_size = sizeof(cpu_stats);
#ifdef NETSNMP_KERN_MCPU
NETSNMP_KERN_MCPU_TYPE *mcpu_stats;
int mcpu_mib[] = { CTL_KERN, NETSNMP_KERN_MCPU };
size_t mcpu_size;
#endif
NETSNMP_VM_STATS_TYPE mem_stats;
int mem_mib[] = { CTL_VM, NETSNMP_VM_STATS };
size_t mem_size = sizeof(NETSNMP_VM_STATS_TYPE);
netsnmp_cpu_info *cpu = netsnmp_cpu_get_byIdx( -1, 0 );
#if (defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__))
sysctlbyname("kern.cp_time", cpu_stats, &cpu_size, NULL, 0);
#else
sysctl(cpu_mib, 2, cpu_stats, &cpu_size, NULL, 0);
#endif
cpu->user_ticks = (unsigned long long)cpu_stats[CP_USER];
cpu->nice_ticks = (unsigned long long)cpu_stats[CP_NICE];
cpu->sys2_ticks = (unsigned long long)cpu_stats[CP_SYS]+cpu_stats[CP_INTR];
cpu->kern_ticks = (unsigned long long)cpu_stats[CP_SYS];
cpu->idle_ticks = (unsigned long long)cpu_stats[CP_IDLE];
cpu->intrpt_ticks = (unsigned long long)cpu_stats[CP_INTR];
/* wait_ticks, sirq_ticks unused */
/*
* Interrupt/Context Switch statistics
* XXX - Do these really belong here ?
*/
sysctl(mem_mib, 2, &mem_stats, &mem_size, NULL, 0);
cpu->nInterrupts = (unsigned long long)mem_stats.NS_VM_INTR;
cpu->nCtxSwitches = (unsigned long long)mem_stats.NS_VM_SWTCH;
cpu->swapIn = (unsigned long long)mem_stats.NS_VM_SWAPIN;
cpu->swapOut = (unsigned long long)mem_stats.NS_VM_SWAPOUT;
#ifdef NS_VM_PAGEIN
cpu->pageIn = (unsigned long long)mem_stats.NS_VM_PAGEIN;
#endif
#ifdef NS_VM_PAGEOUT
cpu->pageOut = (unsigned long long)mem_stats.NS_VM_PAGEOUT;
#endif
#ifdef NETSNMP_KERN_MCPU
mcpu_size = cpu_num*sizeof(NETSNMP_KERN_MCPU_TYPE);
mcpu_stats = malloc(mcpu_size);
sysctl(mcpu_mib, 2, mcpu_stats, &mcpu_size, NULL, 0);
for ( i = 0; i < cpu_num; i++ ) {
cpu = netsnmp_cpu_get_byIdx( i, 0 );
/* XXX - per-CPU statistics - mcpu_mib[i].??? */
}
free(mcpu_stats);
#else
/* Copy "overall" figures to cpu0 entry */
_cpu_copy_stats( cpu );
#endif
return 0;
}
/*
* Load the latest CPU usage statistics
*/
int netsnmp_cpu_arch_load( netsnmp_cache *cache, void *magic ) {
static char *buff = NULL;
static int bsize = 0;
static int first = 1;
static int num_cpuline_elem = 0;
int bytes_read, statfd, i;
char *b1, *b2;
unsigned long long cusell = 0, cicell = 0, csysll = 0, cidell = 0,
ciowll = 0, cirqll = 0, csoftll = 0, cstealll = 0,
cguestll = 0, cguest_nicell = 0;
netsnmp_cpu_info* cpu;
if ((statfd = open(STAT_FILE, O_RDONLY, 0)) == -1) {
snmp_log_perror(STAT_FILE);
return -1;
}
if (bsize == 0) {
bsize = getpagesize()-1;
buff = (char*)malloc(bsize+1);
if (buff == NULL) {
return -1;
}
}
while ((bytes_read = read(statfd, buff, bsize)) == bsize) {
bsize += BUFSIZ;
buff = (char*)realloc(buff, bsize+1);
DEBUGMSGTL(("cpu", "/proc/stat buffer increased to %d\n", bsize));
close(statfd);
statfd = open(STAT_FILE, O_RDONLY, 0);
if (statfd == -1) {
snmp_log_perror(STAT_FILE);
return -1;
}
}
close(statfd);
if ( bytes_read < 0 ) {
snmp_log_perror(STAT_FILE "read error");
return -1;
}
buff[bytes_read] = '\0';
/*
* CPU statistics (overall and per-CPU)
*/
b1 = buff;
while ((b2 = strstr( b1, "cpu" ))) {
if (b2[3] == ' ') {
cpu = netsnmp_cpu_get_byIdx( -1, 0 );
if (!cpu) {
snmp_log_perror("No (overall) CPU info entry");
return -1;
}
b1 = b2+4; /* Skip "cpu " */
} else {
sscanf( b2, "cpu%d", &i );
/* Create on the fly to support non-x86 systems - see init */
cpu = netsnmp_cpu_get_byIdx( i, 1 );
if (!cpu) {
snmp_log_perror("Missing CPU info entry");
break;
}
b1 = b2; /* Skip "cpuN " */
while(*b1 != ' ') b1++;
b1++;
}
num_cpuline_elem = sscanf(b1, "%llu %llu %llu %llu %llu %llu %llu %llu %llu %llu",
&cusell, &cicell, &csysll, &cidell, &ciowll, &cirqll, &csoftll, &cstealll, &cguestll, &cguest_nicell);
DEBUGMSGTL(("cpu", "/proc/stat cpu line number of elements: %i\n", num_cpuline_elem));
/* kernel 2.6.33 and above */
if (num_cpuline_elem == 10) {
cpu->guestnice_ticks = cguest_nicell;
}
/* kernel 2.6.24 and above */
if (num_cpuline_elem >= 9) {
cpu->guest_ticks = cguestll;
}
/* kernel 2.6.11 and above */
if (num_cpuline_elem >= 8) {
cpu->steal_ticks = cstealll;
}
/* kernel 2.6 */
if (num_cpuline_elem >= 5) {
cpu->wait_ticks = ciowll;
cpu->intrpt_ticks = cirqll;
cpu->sirq_ticks = csoftll;
}
/* rest */
cpu->user_ticks = cusell;
cpu->nice_ticks = cicell;
cpu->sys_ticks = csysll;
cpu->idle_ticks = cidell;
}
if ( b1 == buff ) {
if (first)
snmp_log(LOG_ERR, "No cpu line in %s\n", STAT_FILE);
}
/*
* Interrupt/Context Switch statistics
* XXX - Do these really belong here ?
*/
cpu = netsnmp_cpu_get_byIdx( -1, 0 );
_cpu_load_swap_etc( buff, cpu );
/*
* XXX - TODO: extract per-CPU statistics
* (Into separate netsnmp_cpu_info data structures)
*/
first = 0;
return 0;
}
/*
* Load the latest CPU usage statistics
*/
int netsnmp_cpu_arch_load( netsnmp_cache *cache, void *magic ) {
int i,n;
perfstat_id_t name;
perfstat_cpu_total_t cs;
perfstat_cpu_t *cs2;
perfstat_memory_total_t ms;
netsnmp_cpu_info *cpu = netsnmp_cpu_get_byIdx( -1, 0 );
if (perfstat_cpu_total((perfstat_id_t *)NULL, &cs,
sizeof(perfstat_cpu_total_t), 1) > 0) {
/* Returns 'u_longlong_t' statistics */
cpu->user_ticks = (unsigned long long)cs.user / cs.ncpus;
cpu->sys_ticks = ((unsigned long long)cs.sys + (unsigned long long)cs.wait) / cs.ncpus;
cpu->kern_ticks = (unsigned long long)cs.sys / cs.ncpus;
cpu->wait_ticks = (unsigned long long)cs.wait / cs.ncpus;
cpu->idle_ticks = (unsigned long long)cs.idle / cs.ncpus;
/* intrpt_ticks, sirq_ticks, nice_ticks unused */
/*
* Interrupt/Context Switch statistics
* XXX - Do these really belong here ?
*/
cpu->pageIn = (unsigned long long)cs.sysread;
cpu->pageOut = (unsigned long long)cs.syswrite;
cpu->nInterrupts = (unsigned long long)cs.devintrs + cs.softintrs;
cpu->nCtxSwitches = (unsigned long long)cs.pswitch;
}
if (perfstat_memory_total((perfstat_id_t *)NULL, &ms,
sizeof(perfstat_memory_total_t), 1) > 0) {
cpu->swapIn = (unsigned long long)ms.pgspins;
cpu->swapOut = (unsigned long long)ms.pgspouts;
}
/*
* Per-CPU statistics
*/
n = cs.ncpus; /* XXX - Compare against cpu_num */
cs2 = (perfstat_cpu_t*)malloc( n*sizeof(perfstat_cpu_t));
strcpy( name.name, "");
if (perfstat_cpu(&name, cs2, sizeof(perfstat_cpu_t), n) > 0) {
for ( i = 0; i < n; i++ ) {
cpu = netsnmp_cpu_get_byIdx( i, 1 );
cpu->user_ticks = (unsigned long long)cs2[i].user;
cpu->sys_ticks = (unsigned long long)cs2[i].sys + (unsigned long long)cs2[i].wait;
cpu->kern_ticks = (unsigned long long)cs2[i].sys;
cpu->wait_ticks = (unsigned long long)cs2[i].wait;
cpu->idle_ticks = (unsigned long long)cs2[i].idle;
cpu->pageIn = (unsigned long long)cs2[i].sysread;
cpu->pageOut = (unsigned long long)cs2[i].syswrite;
cpu->nCtxSwitches = (unsigned long long)cs2[i].pswitch;
/* Interrupt stats only apply overall, not per-CPU */
}
} else {
_cpu_copy_stats( cpu );
}
free(cs2);
return 0;
}
/*
* Load the latest CPU usage statistics
*/
int netsnmp_cpu_arch_load( netsnmp_cache *cache, void *magic ) {
int i=1;
kstat_t *ksp;
cpu_stat_t cs;
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;
kstat_chain_update( kstat_fd );
DEBUGMSGTL(("cpu", "cpu_kstat load\n "));
for (ksp = kstat_fd->kc_chain; ksp != NULL; ksp = ksp->ks_next) {
if (ksp->ks_flags & KSTAT_FLAG_INVALID)
continue;
if (strcmp(ksp->ks_module, "cpu_stat") == 0) {
i = ksp->ks_instance;
cpu2 = netsnmp_cpu_get_byIdx( i, 0 );
if ( !cpu2 )
break; /* or continue ? */ /* Skip new CPUs */
if ((ksp->ks_type != KSTAT_TYPE_RAW) ||
(ksp->ks_data_size != sizeof(cs))||
(kstat_read(kstat_fd, ksp, &cs) == -1)) {
DEBUGMSGTL(("cpu", "cpu_kstat load failed (%d)\n ", i));
break; /* or continue ? */
}
cpu2->user_ticks = (unsigned long long)cs.cpu_sysinfo.cpu[CPU_USER];
cpu2->idle_ticks = (unsigned long long)cs.cpu_sysinfo.cpu[CPU_IDLE];
cpu2->kern_ticks = (unsigned long long)cs.cpu_sysinfo.cpu[CPU_KERNEL];
cpu2->wait_ticks = (unsigned long long)cs.cpu_sysinfo.cpu[CPU_WAIT];
/* or cs.cpu_sysinfo.wait[W_IO]+cs.cpu_sysinfo.wait[W_PIO] */
cpu2->sys2_ticks = (unsigned long long)cpu2->kern_ticks+cpu2->wait_ticks;
/* nice_ticks, intrpt_ticks, sirq_ticks unused */
/* sum these for the overall stats */
cpu->user_ticks += (unsigned long long)cs.cpu_sysinfo.cpu[CPU_USER];
cpu->idle_ticks += (unsigned long long)cs.cpu_sysinfo.cpu[CPU_IDLE];
cpu->kern_ticks += (unsigned long long)cs.cpu_sysinfo.cpu[CPU_KERNEL];
cpu->wait_ticks += (unsigned long long)cs.cpu_sysinfo.cpu[CPU_WAIT];
/* or cs.cpu_sysinfo.wait[W_IO]+cs.cpu_sysinfo.wait[W_PIO] */
cpu->sys2_ticks += (unsigned long long)cpu2->kern_ticks+cpu2->wait_ticks;
/*
* Interrupt/Context Switch statistics
* XXX - Do these really belong here ?
*/
cpu->swapIn += (unsigned long long)cs.cpu_vminfo.swapin;
cpu->swapOut += (unsigned long long)cs.cpu_vminfo.swapout;
cpu->pageIn += (unsigned long long)cs.cpu_sysinfo.bread;
cpu->pageOut += (unsigned long long)cs.cpu_sysinfo.bwrite;
cpu->nInterrupts += (unsigned long long)cs.cpu_sysinfo.intr;
cpu->nCtxSwitches += (unsigned long long)cs.cpu_sysinfo.pswitch;
}
}
return 0;
}
int
vmstat_handler (netsnmp_mib_handler * handler,
netsnmp_handler_registration * reginfo,
netsnmp_agent_request_info * reqinfo, netsnmp_request_info * requests)
{
oid obj;
unsigned long long value = 0;
char cp[300];
netsnmp_cpu_info *info = netsnmp_cpu_get_byIdx (-1, 0);
switch (reqinfo->mode)
{
case MODE_GET:
obj = requests->requestvb->name[requests->requestvb->name_length - 2];
switch (obj)
{
case MIBINDEX: /* dummy value */
snmp_set_var_typed_integer (requests->requestvb, ASN_INTEGER, 1);
break;
case ERRORNAME: /* dummy name */
sprintf (cp, "systemStats");
snmp_set_var_typed_value (requests->requestvb, ASN_OCTET_STR, cp, strlen (cp));
break;
/*
case IOSENT:
long_ret = vmstat(iosent);
return ((u_char *) (&long_ret));
case IORECEIVE:
long_ret = vmstat(ioreceive);
return ((u_char *) (&long_ret));
case IORAWSENT:
long_ret = vmstat(rawiosent);
return ((u_char *) (&long_ret));
case IORAWRECEIVE:
long_ret = vmstat(rawioreceive);
return ((u_char *) (&long_ret));
*/
/*
* Raw CPU statistics
* Taken directly from the (overall) cpu_info structure.
*
* XXX - Need some form of flag to skip objects that
* aren't supported on a given architecture.
*/
case CPURAWUSER:
snmp_set_var_typed_integer (requests->requestvb, ASN_COUNTER, info->user_ticks & 0xffffffff);
break;
case CPURAWNICE:
snmp_set_var_typed_integer (requests->requestvb, ASN_COUNTER, info->nice_ticks & 0xffffffff);
break;
case CPURAWSYSTEM:
/*
* Some architecture have traditionally reported a
* combination of CPU statistics for this object.
* The CPU HAL module uses 'sys2_ticks' for this,
* so use this value in preference to 'sys_ticks'
* if it has a non-zero value.
*/
snmp_set_var_typed_integer (requests->requestvb, ASN_COUNTER,
(info->sys2_ticks ? info->sys2_ticks : info->sys_ticks) & 0xffffffff);
break;
case CPURAWIDLE:
snmp_set_var_typed_integer (requests->requestvb, ASN_COUNTER, info->idle_ticks & 0xffffffff);
break;
case CPURAWWAIT:
snmp_set_var_typed_integer (requests->requestvb, ASN_COUNTER, info->wait_ticks & 0xffffffff);
break;
case CPURAWKERNEL:
snmp_set_var_typed_integer (requests->requestvb, ASN_COUNTER, info->kern_ticks & 0xffffffff);
break;
case CPURAWINTR:
snmp_set_var_typed_integer (requests->requestvb, ASN_COUNTER, info->intrpt_ticks & 0xffffffff);
break;
case CPURAWSOFTIRQ:
snmp_set_var_typed_integer (requests->requestvb, ASN_COUNTER, info->sirq_ticks & 0xffffffff);
break;
case CPURAWSTEAL:
snmp_set_var_typed_integer (requests->requestvb, ASN_COUNTER, info->steal_ticks & 0xffffffff);
break;
case CPURAWGUEST:
snmp_set_var_typed_integer (requests->requestvb, ASN_COUNTER, info->guest_ticks & 0xffffffff);
break;
case CPURAWGUESTNICE:
snmp_set_var_typed_integer (requests->requestvb, ASN_COUNTER, info->guestnice_ticks & 0xffffffff);
break;
/*
* 'Cooked' CPU statistics
* Percentage usage of the specified statistic calculated
* over the period (1 min) that history is being kept for.
*
* This is actually a change of behaviour for some architectures,
* but:
* a) It ensures consistency across all systems
* a) It matches the definition of the MIB objects
*
* Note that this value will only be reported once the agent
* has a full minute's history collected.
*/
case CPUUSER:
if (info->history && info->history[0].total_hist)
{
value = (info->user_ticks - info->history[0].user_hist) * 100;
if (info->total_ticks - info->history[0].total_hist)
value /= (info->total_ticks - info->history[0].total_hist);
else
value = 0; /* or skip this entry */
snmp_set_var_typed_integer (requests->requestvb, ASN_INTEGER, value & 0x7fffffff);
}
break;
case CPUSYSTEM:
if (info->history && info->history[0].total_hist)
{
/* or sys2_ticks ??? */
value = (info->sys_ticks - info->history[0].sys_hist) * 100;
if (info->total_ticks - info->history[0].total_hist)
value /= (info->total_ticks - info->history[0].total_hist);
else
value = 0; /* or skip this entry */
snmp_set_var_typed_integer (requests->requestvb, ASN_INTEGER, value & 0x7fffffff);
}
break;
case CPUIDLE:
if (info->history && info->history[0].total_hist)
{
value = (info->idle_ticks - info->history[0].idle_hist) * 100;
if (info->total_ticks - info->history[0].total_hist)
value /= (info->total_ticks - info->history[0].total_hist);
else
value = 0; /* or skip this entry */
snmp_set_var_typed_integer (requests->requestvb, ASN_INTEGER, value & 0x7fffffff);
}
break;
/*
* Similarly for the Interrupt and Context switch statistics
* (raw and per-second, calculated over the last minute)
*/
case SYSRAWINTERRUPTS:
snmp_set_var_typed_integer (requests->requestvb, ASN_COUNTER, info->nInterrupts & 0xffffffff);
break;
case SYSRAWCONTEXT:
snmp_set_var_typed_integer (requests->requestvb, ASN_COUNTER, info->nCtxSwitches & 0xffffffff);
break;
case SYSINTERRUPTS:
if (info->history && info->history[0].total_hist)
{
value = (info->nInterrupts - info->history[0].intr_hist) / 60;
snmp_set_var_typed_integer (requests->requestvb, ASN_INTEGER, value & 0x7fffffff);
}
break;
case SYSCONTEXT:
if (info->history && info->history[0].total_hist)
{
value = (info->nCtxSwitches - info->history[0].ctx_hist) / 60;
snmp_set_var_typed_integer (requests->requestvb, ASN_INTEGER, value & 0x7fffffff);
}
break;
/*
* Similarly for the Swap statistics...
*/
case RAWSWAPIN:
snmp_set_var_typed_integer (requests->requestvb, ASN_COUNTER, info->swapIn & 0xffffffff);
break;
case RAWSWAPOUT:
snmp_set_var_typed_integer (requests->requestvb, ASN_COUNTER, info->swapOut & 0xffffffff);
break;
case SWAPIN:
if (info->history && info->history[0].total_hist)
{
value = (info->swapIn - info->history[0].swpi_hist) / 60;
/* ??? value *= PAGE_SIZE; */
snmp_set_var_typed_integer (requests->requestvb, ASN_INTEGER, value & 0x7fffffff);
}
break;
case SWAPOUT:
if (info->history && info->history[0].total_hist)
{
value = (info->swapOut - info->history[0].swpo_hist) / 60;
/* ??? value *= PAGE_SIZE; */
snmp_set_var_typed_integer (requests->requestvb, ASN_INTEGER, value & 0x7fffffff);
}
break;
/*
* ... and the I/O statistics.
*/
case IORAWSENT:
snmp_set_var_typed_integer (requests->requestvb, ASN_COUNTER, info->pageOut & 0xffffffff);
break;
case IORAWRECEIVE:
snmp_set_var_typed_integer (requests->requestvb, ASN_COUNTER, info->pageIn & 0xffffffff);
break;
case IOSENT:
if (info->history && info->history[0].total_hist)
{
value = (info->pageOut - info->history[0].pageo_hist) / 60;
snmp_set_var_typed_integer (requests->requestvb, ASN_INTEGER, value & 0x7fffffff);
}
break;
case IORECEIVE:
if (info->history && info->history[0].total_hist)
{
value = (info->pageIn - info->history[0].pagei_hist) / 60;
snmp_set_var_typed_integer (requests->requestvb, ASN_INTEGER, value & 0x7fffffff);
}
break;
default:
/*
XXX - The systemStats group is "holely", so walking it would
trigger this message repeatedly. We really need a form
of the table column registration mechanism, that would
work with scalar groups.
snmp_log(LOG_ERR,
"unknown object (%d) in vmstat_handler\n", (int)obj);
*/
break;
}
break;
default:
snmp_log (LOG_ERR, "unknown mode (%d) in vmstat_handler\n", reqinfo->mode);
return SNMP_ERR_GENERR;
}
return SNMP_ERR_NOERROR;
}
int
proc_status(int idx)
{
netsnmp_cpu_info *cpu = netsnmp_cpu_get_byIdx( idx & HRDEV_TYPE_MASK, 0 );
return (cpu ? cpu->status : 0 );
}
/*
* Load the latest CPU usage statistics
*/
int netsnmp_cpu_arch_load( netsnmp_cache *cache, void *magic ) {
static char *buff = NULL;
static int bsize = 0;
static int first = 1;
static int has_cpu_26 = 1;
int statfd, i;
char *b1, *b2;
unsigned long long cusell = 0, cicell = 0, csysll = 0, cidell = 0,
ciowll = 0, cirqll = 0, csoftll = 0;
netsnmp_cpu_info* cpu;
if ((statfd = open(STAT_FILE, O_RDONLY, 0)) == -1) {
snmp_log_perror(STAT_FILE);
return -1;
}
if (bsize == 0) {
bsize = 256;
buff = malloc(bsize);
}
while (read(statfd, buff, bsize) == bsize) {
bsize += 256;
buff = realloc(buff, bsize);
DEBUGMSGTL(("cpu", "/proc/stat buffer increased to %d\n", bsize));
close(statfd);
statfd = open(STAT_FILE, O_RDONLY, 0);
}
close(statfd);
/*
* CPU statistics (overall and per-CPU)
*/
b1 = buff;
while ((b2 = strstr( b1, "cpu" ))) {
if (b2[3] == ' ') {
cpu = netsnmp_cpu_get_byIdx( -1, 0 );
if (!cpu) {
snmp_log_perror("No (overall) CPU info entry");
return -1;
}
b1 = b2+4; /* Skip "cpu " */
} else {
sscanf( b2, "cpu%d", &i );
/* Create on the fly to support non-x86 systems - see init */
cpu = netsnmp_cpu_get_byIdx( i, 1 );
if (!cpu) {
snmp_log_perror("Missing CPU info entry");
break;
}
b1 = b2+5; /* Skip "cpuN " */
}
if (!has_cpu_26 ||
sscanf(b1, "%llu %llu %llu %llu %llu %llu %llu", &cusell,
&cicell, &csysll, &cidell, &ciowll, &cirqll, &csoftll) != 7) {
has_cpu_26 = 0;
sscanf(b1, "%llu %llu %llu %llu", &cusell, &cicell, &csysll,
&cidell);
} else {
cpu->wait_ticks = (unsigned long)ciowll;
cpu->intrpt_ticks = (unsigned long)cirqll;
cpu->sirq_ticks = (unsigned long)csoftll;
}
cpu->user_ticks = (unsigned long)cusell;
cpu->nice_ticks = (unsigned long)cicell;
cpu->sys_ticks = (unsigned long)csysll;
cpu->idle_ticks = (unsigned long)cidell;
}
if ( b1 == buff ) {
if (first)
snmp_log(LOG_ERR, "No cpu line in %s\n", STAT_FILE);
}
/*
* Interrupt/Context Switch statistics
* XXX - Do these really belong here ?
*/
cpu = netsnmp_cpu_get_byIdx( -1, 0 );
_cpu_load_swap_etc( buff, cpu );
/*
* XXX - TODO: extract per-CPU statistics
* (Into separate netsnmp_cpu_info data structures)
*/
first = 0;
return 0;
}
