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Core: the "auto" parameter of the "worker_processes" directive.

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The parameter will set the number of worker processes to the
autodetected number of available CPU cores.
This commit is contained in:
Andrey Belov 2012-10-23 09:08:41 +00:00
parent 106dbc8d76
commit f7b32c479d
1 changed files with 33 additions and 2 deletions
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35
src/core/nginx.c
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@ -21,6 +21,8 @@ static char *ngx_set_env(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
static char *ngx_set_priority(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
static char *ngx_set_cpu_affinity(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
static char *ngx_set_worker_processes(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf);
static ngx_conf_enum_t ngx_debug_points[] = {
@ -69,9 +71,9 @@ static ngx_command_t ngx_core_commands[] = {
{ ngx_string("worker_processes"),
NGX_MAIN_CONF|NGX_DIRECT_CONF|NGX_CONF_TAKE1,
ngx_conf_set_num_slot,
ngx_set_worker_processes,
0,
0,
offsetof(ngx_core_conf_t, worker_processes),
NULL },
{ ngx_string("debug_points"),
@ -1329,3 +1331,32 @@ ngx_get_cpu_affinity(ngx_uint_t n)
return ccf->cpu_affinity[ccf->cpu_affinity_n - 1];
}
static char *
ngx_set_worker_processes(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_str_t *value;
ngx_core_conf_t *ccf;
ccf = (ngx_core_conf_t *) conf;
if (ccf->worker_processes != NGX_CONF_UNSET) {
return "is duplicate";
}
value = (ngx_str_t *) cf->args->elts;
if (ngx_strcmp(value[1].data, "auto") == 0) {
ccf->worker_processes = ngx_ncpu;
return NGX_CONF_OK;
}
ccf->worker_processes = ngx_atoi(value[1].data, value[1].len);
if (ccf->worker_processes == NGX_ERROR) {
return "invalid value";
}
return NGX_CONF_OK;
}