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improve logical processor folding

This commit is contained in:
Doug MacEachern 2007-06-28 00:01:51 +00:00
parent 3dea5eb761
commit 407144e707
1 changed files with 59 additions and 28 deletions
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87
src/os/solaris/solaris_sigar.c
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@ -300,6 +300,11 @@ static int get_chip_brand(sigar_t *sigar, int processor,
}
}
static void free_chip_id(void *ptr)
{
/*noop*/
}
static int get_chip_id(sigar_t *sigar, int processor)
{
kstat_t *ksp = sigar->ks.cpu_info[processor];
@ -316,18 +321,6 @@ static int get_chip_id(sigar_t *sigar, int processor)
}
}
static int is_same_chip(sigar_t *sigar, int processor, int num)
{
int chip_id = get_chip_id(sigar, processor);
if ((chip_id == -1) || (chip_id != (num-1))) {
return 0;
}
else {
return 1;
}
}
int sigar_cpu_get(sigar_t *sigar, sigar_cpu_t *cpu)
{
int status, i;
@ -361,7 +354,7 @@ int sigar_cpu_list_get(sigar_t *sigar, sigar_cpu_list_t *cpulist)
uint_t cpuinfo[CPU_STATES];
unsigned int i;
int is_debug = SIGAR_LOG_IS_DEBUG(sigar);
int reported_virtual = 0;
sigar_cache_t *chips;
if (sigar_kstat_update(sigar) == -1) {
return errno;
@ -386,10 +379,15 @@ int sigar_cpu_list_get(sigar_t *sigar, sigar_cpu_list_t *cpulist)
"[cpu_list] OS reports %d CPUs",
sigar->ncpu);
}
chips = sigar_cache_new(16);
chips->free_value = free_chip_id;
for (i=0; i<sigar->ncpu; i++) {
sigar_cpu_t *cpu;
char *buf;
int chip_id;
sigar_cache_entry_t *ent;
if (!CPU_ONLINE(sigar->ks.cpuid[i])) {
sigar_log_printf(sigar, SIGAR_LOG_INFO,
@ -431,22 +429,32 @@ int sigar_cpu_list_get(sigar_t *sigar, sigar_cpu_list_t *cpulist)
buf = ksp->ks_data;
buf += sizeof(kmutex_t);
memcpy(&cpuinfo[0], buf, sizeof(cpuinfo));
chip_id = get_chip_id(sigar, i);
if (is_same_chip(sigar, i, cpulist->number)) {
/* merge times of logical processors */
cpu = &cpulist->data[cpulist->number-1];
if (is_debug && !reported_virtual++) {
sigar_log_printf(sigar, SIGAR_LOG_DEBUG,
"[cpu_list] Merging times of"
" logical processors");
}
}
else {
if (chip_id == -1) {
SIGAR_CPU_LIST_GROW(cpulist);
cpu = &cpulist->data[cpulist->number++];
SIGAR_ZERO(cpu);
}
else {
/* merge times of logical processors */
ent = sigar_cache_get(chips, chip_id);
if (ent->value) {
cpu = (sigar_cpu_t *)ent->value;
}
else {
SIGAR_CPU_LIST_GROW(cpulist);
cpu = &cpulist->data[cpulist->number++];
SIGAR_ZERO(cpu);
ent->value = cpu;
if (is_debug) {
sigar_log_printf(sigar, SIGAR_LOG_DEBUG,
"[cpu_list] Merging times of"
" logical processors for chip_id=%d",
chip_id);
}
}
}
cpu->user += SIGAR_TICK2MSEC(cpuinfo[CPU_USER]);
cpu->sys += SIGAR_TICK2MSEC(cpuinfo[CPU_KERNEL]);
@ -455,7 +463,9 @@ int sigar_cpu_list_get(sigar_t *sigar, sigar_cpu_list_t *cpulist)
cpu->nice += 0; /* no cpu->nice */
cpu->total = cpu->user + cpu->sys + cpu->idle + cpu->wait;
}
sigar_cache_destroy(chips);
return SIGAR_OK;
}
@ -1627,6 +1637,8 @@ int sigar_cpu_info_list_get(sigar_t *sigar,
unsigned int i;
int status = SIGAR_OK;
int brand = -1;
sigar_cache_t *chips;
int is_debug = SIGAR_LOG_IS_DEBUG(sigar);
if (sigar_kstat_update(sigar) == -1) { /* for sigar->ncpu */
return errno;
@ -1654,12 +1666,29 @@ int sigar_cpu_info_list_get(sigar_t *sigar,
}
sigar_cpu_info_list_create(cpu_infos);
chips = sigar_cache_new(16);
chips->free_value = free_chip_id;
for (i=0; i<sigar->ncpu; i++) {
sigar_cpu_info_t *info;
int chip_id = get_chip_id(sigar, i);
if (is_same_chip(sigar, i, cpu_infos->number)) {
continue;
if (chip_id != -1) {
sigar_cache_entry_t *ent =
sigar_cache_get(chips, chip_id);
if (ent->value) {
continue;
}
else {
ent->value = chips; /*anything non-NULL*/
if (is_debug) {
sigar_log_printf(sigar, SIGAR_LOG_DEBUG,
"[cpu_list] Merging info of"
" logical processors for chip_id=%d",
chip_id);
}
}
}
SIGAR_CPU_INFO_LIST_GROW(cpu_infos);
@ -1696,6 +1725,8 @@ int sigar_cpu_info_list_get(sigar_t *sigar,
info->cache_size = SIGAR_FIELD_NOTIMPL; /*XXX*/
}
sigar_cache_destroy(chips);
return SIGAR_OK;
}