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PG-542: Performance improvement of pg_stat_monitor. 

Saving the client IP address once per the lifetime of a backend. This avoid
the expensive operation multiple times, and hence improving performance
significantly.
pull/382/head
Hamid Akhtar 2023-02-23 02:31:24 +05:00 committed by Muhammad Usama
parent 8482bcc347
commit ccaa910c35
1 changed files with 9 additions and 3 deletions
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12
pg_stat_monitor.c
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@ -1611,12 +1611,12 @@ pgsm_create_hash_entry(uint64 bucket_id, uint64 queryid, PlanInfo *plan_info)
pgsmEntry *entry; pgsmEntry *entry;
int sec_ctx; int sec_ctx;
bool found_client_addr = false; bool found_client_addr = false;
char app_name[APPLICATIONNAME_LEN] = "";
char *app_name_ptr = app_name; char *app_name_ptr = app_name;
int app_name_len = 0;
MemoryContext oldctx; MemoryContext oldctx;
char *datname = NULL; char *datname = NULL;
char *username = NULL; char *username = NULL;
static bool is_ip_set = false;
static uint32 ip = 0;
/* Create an entry in the pgsm memory context */ /* Create an entry in the pgsm memory context */
oldctx = MemoryContextSwitchTo(pgsm_get_ss()->pgsm_mem_cxt); oldctx = MemoryContextSwitchTo(pgsm_get_ss()->pgsm_mem_cxt);
@ -1633,7 +1633,13 @@ pgsm_create_hash_entry(uint64 bucket_id, uint64 queryid, PlanInfo *plan_info)
entry->key.appid = pgsm_hash_string((const char *)app_name_ptr, app_name_len); entry->key.appid = pgsm_hash_string((const char *)app_name_ptr, app_name_len);
/* client address */ /* client address */
entry->key.ip = pg_get_client_addr(&found_client_addr); if (!is_ip_set)
{
ip = pg_get_client_addr(&found_client_addr);
is_ip_set = true;
}
entry->key.ip = ip;
/* PlanID, if there is one */ /* PlanID, if there is one */
entry->key.planid = plan_info ? plan_info->planid : 0; entry->key.planid = plan_info ? plan_info->planid : 0;