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Reducing memory footprint of the PGSM entry by reducing relation size to match typlen of name type. Also, updated some gucs for better MAX and default values.

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This commit is contained in:
Hamid Akhtar
2023-02-16 14:51:28 +05:00
parent 988fae31fa
commit 8d4e99a7af
9 changed files with 47 additions and 45 deletions
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8
guc.c
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@@ -41,9 +41,9 @@ init_guc(void)
{
.guc_name = "pg_stat_monitor.pgsm_max",
.guc_desc = "Sets the maximum size of shared memory in (MB) used for statement's metadata tracked by pg_stat_monitor.",
.guc_default = 100,
.guc_min = 1,
.guc_max = 1000,
.guc_default = 256,
.guc_min = 10,
.guc_max = 10240,
.guc_restart = true,
.guc_unit = GUC_UNIT_MB,
.guc_value = &PGSM_MAX
@@ -95,7 +95,7 @@ init_guc(void)
.guc_desc = "Sets the maximum number of buckets.",
.guc_default = 10,
.guc_min = 1,
.guc_max = 10,
.guc_max = 20000,
.guc_restart = true,
.guc_unit = 0,
.guc_value = &PGSM_MAX_BUCKETS

12
pg_stat_monitor.c
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@@ -978,9 +978,12 @@ pgss_ProcessUtility(PlannedStmt *pstmt, const char *queryString,
{
Node *parsetree = pstmt->utilityStmt;
uint64 queryId = 0;
#if PG_VERSION_NUM < 140000
int len = strlen(queryString);
#if PG_VERSION_NUM >= 140000
queryId = pgss_hash_string(queryString, len);
#else
queryId = pstmt->queryId;
/*
@@ -994,8 +997,6 @@ pgss_ProcessUtility(PlannedStmt *pstmt, const char *queryString,
*/
if (PGSM_TRACK_UTILITY && pgsm_enabled(exec_nested_level))
pstmt->queryId = UINT64CONST(0);
#else
queryId = pgss_hash_string(queryString, len);
#endif
/*
@@ -2140,8 +2141,8 @@ pg_stat_monitor_internal(FunctionCallInfo fcinfo,
if (tmp.info.num_relations > 0)
{
int j;
char *text_str = palloc0(1024);
char *tmp_str = palloc0(1024);
char *text_str = palloc0(TOTAL_RELS_LENGTH);
char *tmp_str = palloc0(TOTAL_RELS_LENGTH);
bool first = true;
/*
@@ -2315,7 +2316,6 @@ pg_stat_monitor_internal(FunctionCallInfo fcinfo,
values[i++] = Int64GetDatumFast(tmp.jitinfo.jit_emission_count);
values[i++] = Float8GetDatumFast(tmp.jitinfo.jit_emission_time);
}
}
values[i++] = BoolGetDatum(toplevel);
values[i++] = BoolGetDatum(pg_atomic_read_u64(&pgss->current_wbucket) != bucketid);

4
pg_stat_monitor.h
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@@ -78,8 +78,9 @@
#define MAX_BUCKETS 10
#define TEXT_LEN 255
#define ERROR_MESSAGE_LEN 100
#define REL_TYPENAME_LEN 64
#define REL_LST 10
#define REL_LEN 1000
#define REL_LEN 132 /* REL_TYPENAME_LEN * 2 (relname + schema) + 1 (for view indication) + 1 and dot and string terminator */
#define CMD_LST 10
#define CMD_LEN 20
#define APPLICATIONNAME_LEN 100
@@ -97,6 +98,7 @@
#define QUERY_MARGIN 100
#define MIN_QUERY_LEN 10
#define SQLCODE_LEN 20
#define TOTAL_RELS_LENGTH (REL_LST * REL_LEN)
#if PG_VERSION_NUM >= 130000
#define MAX_SETTINGS 15

4
regression/expected/guc.out
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@@ -24,8 +24,8 @@ COLLATE "C";
pg_stat_monitor.pgsm_histogram_buckets | 20 | | postmaster | integer | default | 2 | 50 | | 20 | 20 | f
pg_stat_monitor.pgsm_histogram_max | 100000 | | postmaster | integer | default | 10 | 2147483647 | | 100000 | 100000 | f
pg_stat_monitor.pgsm_histogram_min | 1 | | postmaster | integer | default | 0 | 2147483647 | | 1 | 1 | f
pg_stat_monitor.pgsm_max | 100 | MB | postmaster | integer | default | 1 | 1000 | | 100 | 100 | f
pg_stat_monitor.pgsm_max_buckets | 10 | | postmaster | integer | default | 1 | 10 | | 10 | 10 | f
pg_stat_monitor.pgsm_max | 256 | MB | postmaster | integer | default | 10 | 10240 | | 256 | 256 | f
pg_stat_monitor.pgsm_max_buckets | 10 | | postmaster | integer | default | 1 | 20000 | | 10 | 10 | f
pg_stat_monitor.pgsm_normalized_query | off | | user | bool | default | | | | off | off | f
pg_stat_monitor.pgsm_overflow_target | 1 | | postmaster | integer | default | 0 | 1 | | 1 | 1 | f
pg_stat_monitor.pgsm_query_max_len | 2048 | | postmaster | integer | default | 1024 | 2147483647 | | 2048 | 2048 | f

4
regression/expected/guc_1.out
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@@ -24,8 +24,8 @@ COLLATE "C";
pg_stat_monitor.pgsm_histogram_buckets | 20 | | postmaster | integer | default | 2 | 50 | | 20 | 20 | f
pg_stat_monitor.pgsm_histogram_max | 100000 | | postmaster | integer | default | 10 | 2147483647 | | 100000 | 100000 | f
pg_stat_monitor.pgsm_histogram_min | 1 | | postmaster | integer | default | 0 | 2147483647 | | 1 | 1 | f
pg_stat_monitor.pgsm_max | 100 | MB | postmaster | integer | default | 1 | 1000 | | 100 | 100 | f
pg_stat_monitor.pgsm_max_buckets | 10 | | postmaster | integer | default | 1 | 10 | | 10 | 10 | f
pg_stat_monitor.pgsm_max | 256 | MB | postmaster | integer | default | 10 | 10240 | | 256 | 256 | f
pg_stat_monitor.pgsm_max_buckets | 10 | | postmaster | integer | default | 1 | 20000 | | 10 | 10 | f
pg_stat_monitor.pgsm_normalized_query | off | | user | bool | default | | | | off | off | f
pg_stat_monitor.pgsm_overflow_target | 1 | | postmaster | integer | default | 0 | 1 | | 1 | 1 | f
pg_stat_monitor.pgsm_query_max_len | 2048 | | postmaster | integer | default | 1024 | 2147483647 | | 2048 | 2048 | f

8
t/expected/001_settings_default.out
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@@ -14,8 +14,8 @@ SELECT name, setting, unit, context, vartype, source, min_val, max_val, enumvals
pg_stat_monitor.pgsm_histogram_buckets | 20 | | postmaster | integer | default | 2 | 50 | | 20 | 20 | f
pg_stat_monitor.pgsm_histogram_max | 100000 | | postmaster | integer | default | 10 | 2147483647 | | 100000 | 100000 | f
pg_stat_monitor.pgsm_histogram_min | 1 | | postmaster | integer | default | 0 | 2147483647 | | 1 | 1 | f
pg_stat_monitor.pgsm_max | 100 | MB | postmaster | integer | default | 1 | 1000 | | 100 | 100 | f
pg_stat_monitor.pgsm_max_buckets | 10 | | postmaster | integer | default | 1 | 10 | | 10 | 10 | f
pg_stat_monitor.pgsm_max | 256 | MB | postmaster | integer | default | 10 | 10240 | | 256 | 256 | f
pg_stat_monitor.pgsm_max_buckets | 10 | | postmaster | integer | default | 1 | 20000 | | 10 | 10 | f
pg_stat_monitor.pgsm_normalized_query | off | | user | bool | default | | | | off | off | f
pg_stat_monitor.pgsm_overflow_target | 1 | | postmaster | integer | default | 0 | 1 | | 1 | 1 | f
pg_stat_monitor.pgsm_query_max_len | 2048 | | postmaster | integer | default | 1024 | 2147483647 | | 2048 | 2048 | f
@@ -41,8 +41,8 @@ SELECT name, setting, unit, context, vartype, source, min_val, max_val, enumvals
pg_stat_monitor.pgsm_histogram_buckets | 20 | | postmaster | integer | default | 2 | 50 | | 20 | 20 | f
pg_stat_monitor.pgsm_histogram_max | 100000 | | postmaster | integer | default | 10 | 2147483647 | | 100000 | 100000 | f
pg_stat_monitor.pgsm_histogram_min | 1 | | postmaster | integer | default | 0 | 2147483647 | | 1 | 1 | f
pg_stat_monitor.pgsm_max | 100 | MB | postmaster | integer | default | 1 | 1000 | | 100 | 100 | f
pg_stat_monitor.pgsm_max_buckets | 10 | | postmaster | integer | default | 1 | 10 | | 10 | 10 | f
pg_stat_monitor.pgsm_max | 256 | MB | postmaster | integer | default | 10 | 10240 | | 256 | 256 | f
pg_stat_monitor.pgsm_max_buckets | 10 | | postmaster | integer | default | 1 | 20000 | | 10 | 10 | f
pg_stat_monitor.pgsm_normalized_query | off | | user | bool | default | | | | off | off | f
pg_stat_monitor.pgsm_overflow_target | 1 | | postmaster | integer | default | 0 | 1 | | 1 | 1 | f
pg_stat_monitor.pgsm_query_max_len | 2048 | | postmaster | integer | default | 1024 | 2147483647 | | 2048 | 2048 | f

8
t/expected/001_settings_default.out.12 Executable file → Normal file
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@@ -14,8 +14,8 @@ SELECT name, setting, unit, context, vartype, source, min_val, max_val, enumvals
pg_stat_monitor.pgsm_histogram_buckets | 20 | | postmaster | integer | default | 2 | 50 | | 20 | 20 | f
pg_stat_monitor.pgsm_histogram_max | 100000 | | postmaster | integer | default | 10 | 2147483647 | | 100000 | 100000 | f
pg_stat_monitor.pgsm_histogram_min | 1 | | postmaster | integer | default | 0 | 2147483647 | | 1 | 1 | f
pg_stat_monitor.pgsm_max | 100 | MB | postmaster | integer | default | 1 | 1000 | | 100 | 100 | f
pg_stat_monitor.pgsm_max_buckets | 10 | | postmaster | integer | default | 1 | 10 | | 10 | 10 | f
pg_stat_monitor.pgsm_max | 256 | MB | postmaster | integer | default | 10 | 10240 | | 256 | 256 | f
pg_stat_monitor.pgsm_max_buckets | 10 | | postmaster | integer | default | 1 | 20000 | | 10 | 10 | f
pg_stat_monitor.pgsm_normalized_query | off | | user | bool | default | | | | off | off | f
pg_stat_monitor.pgsm_overflow_target | 1 | | postmaster | integer | default | 0 | 1 | | 1 | 1 | f
pg_stat_monitor.pgsm_query_max_len | 2048 | | postmaster | integer | default | 1024 | 2147483647 | | 2048 | 2048 | f
@@ -40,8 +40,8 @@ SELECT name, setting, unit, context, vartype, source, min_val, max_val, enumvals
pg_stat_monitor.pgsm_histogram_buckets | 20 | | postmaster | integer | default | 2 | 50 | | 20 | 20 | f
pg_stat_monitor.pgsm_histogram_max | 100000 | | postmaster | integer | default | 10 | 2147483647 | | 100000 | 100000 | f
pg_stat_monitor.pgsm_histogram_min | 1 | | postmaster | integer | default | 0 | 2147483647 | | 1 | 1 | f
pg_stat_monitor.pgsm_max | 100 | MB | postmaster | integer | default | 1 | 1000 | | 100 | 100 | f
pg_stat_monitor.pgsm_max_buckets | 10 | | postmaster | integer | default | 1 | 10 | | 10 | 10 | f
pg_stat_monitor.pgsm_max | 256 | MB | postmaster | integer | default | 10 | 10240 | | 256 | 256 | f
pg_stat_monitor.pgsm_max_buckets | 10 | | postmaster | integer | default | 1 | 20000 | | 10 | 10 | f
pg_stat_monitor.pgsm_normalized_query | off | | user | bool | default | | | | off | off | f
pg_stat_monitor.pgsm_overflow_target | 1 | | postmaster | integer | default | 0 | 1 | | 1 | 1 | f
pg_stat_monitor.pgsm_query_max_len | 2048 | | postmaster | integer | default | 1024 | 2147483647 | | 2048 | 2048 | f

34
t/expected/012_settings_pgsm_max_buckets.out
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@@ -8,7 +8,7 @@ SELECT pg_stat_monitor_reset();
SELECT name, setting, unit, context, vartype, source, min_val, max_val, enumvals, boot_val, reset_val, pending_restart FROM pg_settings WHERE name='pg_stat_monitor.pgsm_max_buckets';
name | setting | unit | context | vartype | source | min_val | max_val | enumvals | boot_val | reset_val | pending_restart
----------------------------------+---------+------+------------+---------+--------------------+---------+---------+----------+----------+-----------+-----------------
pg_stat_monitor.pgsm_max_buckets | 1 | | postmaster | integer | configuration file | 1 | 10 | | 10 | 1 | f
pg_stat_monitor.pgsm_max_buckets | 1 | | postmaster | integer | configuration file | 1 | 20000 | | 10 | 1 | f
(1 row)
SELECT pg_stat_monitor_reset();
@@ -20,7 +20,7 @@ SELECT pg_stat_monitor_reset();
SELECT name, setting, unit, context, vartype, source, min_val, max_val, enumvals, boot_val, reset_val, pending_restart FROM pg_settings WHERE name='pg_stat_monitor.pgsm_max_buckets';
name | setting | unit | context | vartype | source | min_val | max_val | enumvals | boot_val | reset_val | pending_restart
----------------------------------+---------+------+------------+---------+--------------------+---------+---------+----------+----------+-----------+-----------------
pg_stat_monitor.pgsm_max_buckets | 2 | | postmaster | integer | configuration file | 1 | 10 | | 10 | 2 | f
pg_stat_monitor.pgsm_max_buckets | 2 | | postmaster | integer | configuration file | 1 | 20000 | | 10 | 2 | f
(1 row)
SELECT pg_stat_monitor_reset();
@@ -32,7 +32,7 @@ SELECT pg_stat_monitor_reset();
SELECT name, setting, unit, context, vartype, source, min_val, max_val, enumvals, boot_val, reset_val, pending_restart FROM pg_settings WHERE name='pg_stat_monitor.pgsm_max_buckets';
name | setting | unit | context | vartype | source | min_val | max_val | enumvals | boot_val | reset_val | pending_restart
----------------------------------+---------+------+------------+---------+--------------------+---------+---------+----------+----------+-----------+-----------------
pg_stat_monitor.pgsm_max_buckets | 5 | | postmaster | integer | configuration file | 1 | 10 | | 10 | 5 | f
pg_stat_monitor.pgsm_max_buckets | 5 | | postmaster | integer | configuration file | 1 | 20000 | | 10 | 5 | f
(1 row)
SELECT pg_stat_monitor_reset();
@@ -44,7 +44,19 @@ SELECT pg_stat_monitor_reset();
SELECT name, setting, unit, context, vartype, source, min_val, max_val, enumvals, boot_val, reset_val, pending_restart FROM pg_settings WHERE name='pg_stat_monitor.pgsm_max_buckets';
name | setting | unit | context | vartype | source | min_val | max_val | enumvals | boot_val | reset_val | pending_restart
----------------------------------+---------+------+------------+---------+--------------------+---------+---------+----------+----------+-----------+-----------------
pg_stat_monitor.pgsm_max_buckets | 10 | | postmaster | integer | configuration file | 1 | 10 | | 10 | 10 | f
pg_stat_monitor.pgsm_max_buckets | 10 | | postmaster | integer | configuration file | 1 | 20000 | | 10 | 10 | f
(1 row)
SELECT pg_stat_monitor_reset();
pg_stat_monitor_reset
-----------------------
(1 row)
SELECT name, setting, unit, context, vartype, source, min_val, max_val, enumvals, boot_val, reset_val, pending_restart FROM pg_settings WHERE name='pg_stat_monitor.pgsm_max_buckets';
name | setting | unit | context | vartype | source | min_val | max_val | enumvals | boot_val | reset_val | pending_restart
----------------------------------+---------+------+------------+---------+--------------------+---------+---------+----------+----------+-----------+-----------------
pg_stat_monitor.pgsm_max_buckets | 11 | | postmaster | integer | configuration file | 1 | 20000 | | 10 | 11 | f
(1 row)
SELECT pg_stat_monitor_reset();
@@ -56,19 +68,7 @@ SELECT pg_stat_monitor_reset();
SELECT name, setting, unit, context, vartype, source, min_val, max_val, enumvals, boot_val, reset_val, pending_restart FROM pg_settings WHERE name='pg_stat_monitor.pgsm_max_buckets';
name | setting | unit | context | vartype | source | min_val | max_val | enumvals | boot_val | reset_val | pending_restart
----------------------------------+---------+------+------------+---------+---------+---------+---------+----------+----------+-----------+-----------------
pg_stat_monitor.pgsm_max_buckets | 10 | | postmaster | integer | default | 1 | 10 | | 10 | 10 | f
(1 row)
SELECT pg_stat_monitor_reset();
pg_stat_monitor_reset
-----------------------
(1 row)
SELECT name, setting, unit, context, vartype, source, min_val, max_val, enumvals, boot_val, reset_val, pending_restart FROM pg_settings WHERE name='pg_stat_monitor.pgsm_max_buckets';
name | setting | unit | context | vartype | source | min_val | max_val | enumvals | boot_val | reset_val | pending_restart
----------------------------------+---------+------+------------+---------+---------+---------+---------+----------+----------+-----------+-----------------
pg_stat_monitor.pgsm_max_buckets | 10 | | postmaster | integer | default | 1 | 10 | | 10 | 10 | f
pg_stat_monitor.pgsm_max_buckets | 10 | | postmaster | integer | default | 1 | 20000 | | 10 | 10 | f
(1 row)
DROP EXTENSION pg_stat_monitor;

10
t/expected/016_settings_pgsm_max.out
View File

@@ -8,7 +8,7 @@ SELECT pg_stat_monitor_reset();
SELECT name, setting, unit, context, vartype, source, min_val, max_val, enumvals, boot_val, reset_val, pending_restart FROM pg_settings WHERE name='pg_stat_monitor.pgsm_max';
name | setting | unit | context | vartype | source | min_val | max_val | enumvals | boot_val | reset_val | pending_restart
--------------------------+---------+------+------------+---------+--------------------+---------+---------+----------+----------+-----------+-----------------
pg_stat_monitor.pgsm_max | 1000 | MB | postmaster | integer | configuration file | 1 | 1000 | | 100 | 1000 | f
pg_stat_monitor.pgsm_max | 1000 | MB | postmaster | integer | configuration file | 10 | 10240 | | 256 | 1000 | f
(1 row)
SELECT pg_stat_monitor_reset();
@@ -20,7 +20,7 @@ SELECT pg_stat_monitor_reset();
SELECT name, setting, unit, context, vartype, source, min_val, max_val, enumvals, boot_val, reset_val, pending_restart FROM pg_settings WHERE name='pg_stat_monitor.pgsm_max';
name | setting | unit | context | vartype | source | min_val | max_val | enumvals | boot_val | reset_val | pending_restart
--------------------------+---------+------+------------+---------+--------------------+---------+---------+----------+----------+-----------+-----------------
pg_stat_monitor.pgsm_max | 500 | MB | postmaster | integer | configuration file | 1 | 1000 | | 100 | 500 | f
pg_stat_monitor.pgsm_max | 500 | MB | postmaster | integer | configuration file | 10 | 10240 | | 256 | 500 | f
(1 row)
SELECT pg_stat_monitor_reset();
@@ -32,7 +32,7 @@ SELECT pg_stat_monitor_reset();
SELECT name, setting, unit, context, vartype, source, min_val, max_val, enumvals, boot_val, reset_val, pending_restart FROM pg_settings WHERE name='pg_stat_monitor.pgsm_max';
name | setting | unit | context | vartype | source | min_val | max_val | enumvals | boot_val | reset_val | pending_restart
--------------------------+---------+------+------------+---------+--------------------+---------+---------+----------+----------+-----------+-----------------
pg_stat_monitor.pgsm_max | 100 | MB | postmaster | integer | configuration file | 1 | 1000 | | 100 | 100 | f
pg_stat_monitor.pgsm_max | 100 | MB | postmaster | integer | configuration file | 10 | 10240 | | 256 | 100 | f
(1 row)
SELECT pg_stat_monitor_reset();
@@ -44,7 +44,7 @@ SELECT pg_stat_monitor_reset();
SELECT name, setting, unit, context, vartype, source, min_val, max_val, enumvals, boot_val, reset_val, pending_restart FROM pg_settings WHERE name='pg_stat_monitor.pgsm_max';
name | setting | unit | context | vartype | source | min_val | max_val | enumvals | boot_val | reset_val | pending_restart
--------------------------+---------+------+------------+---------+--------------------+---------+---------+----------+----------+-----------+-----------------
pg_stat_monitor.pgsm_max | 10 | MB | postmaster | integer | configuration file | 1 | 1000 | | 100 | 10 | f
pg_stat_monitor.pgsm_max | 10 | MB | postmaster | integer | configuration file | 10 | 10240 | | 256 | 10 | f
(1 row)
SELECT pg_stat_monitor_reset();
@@ -56,7 +56,7 @@ SELECT pg_stat_monitor_reset();
SELECT name, setting, unit, context, vartype, source, min_val, max_val, enumvals, boot_val, reset_val, pending_restart FROM pg_settings WHERE name='pg_stat_monitor.pgsm_max';
name | setting | unit | context | vartype | source | min_val | max_val | enumvals | boot_val | reset_val | pending_restart
--------------------------+---------+------+------------+---------+---------+---------+---------+----------+----------+-----------+-----------------
pg_stat_monitor.pgsm_max | 100 | MB | postmaster | integer | default | 1 | 1000 | | 100 | 100 | f
pg_stat_monitor.pgsm_max | 256 | MB | postmaster | integer | default | 10 | 10240 | | 256 | 256 | f
(1 row)
DROP EXTENSION pg_stat_monitor;