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115 lines
3.3 KiB
SQL
115 lines
3.3 KiB
SQL
-- 测试后记录对比数据
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-- 用法：psql -d xingrin -f pg_stats_after_test.sql > stats_after.txt
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\echo '========================================'
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\echo ' PostgreSQL 测试后统计数据'
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\echo '========================================'
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\echo ''
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\echo '当前时间:'
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SELECT now();
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\echo ''
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\echo '表记录数（测试后）:'
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SELECT
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schemaname || '.' || relname as table_name,
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n_live_tup as row_count,
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n_dead_tup as dead_rows,
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pg_size_pretty(pg_total_relation_size(schemaname||'.'||relname)) as total_size,
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last_vacuum,
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last_autovacuum,
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last_analyze,
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last_autoanalyze
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FROM pg_stat_user_tables
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WHERE schemaname = 'public'
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AND relname IN ('subdomain', 'ip_address', 'port', 'website', 'endpoint', 'directory', 'scan')
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ORDER BY n_live_tup DESC;
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\echo ''
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\echo '表膨胀检查:'
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SELECT
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schemaname || '.' || relname as table_name,
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pg_size_pretty(pg_total_relation_size(schemaname||'.'||relname)) as total_size,
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n_live_tup as live_rows,
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n_dead_tup as dead_rows,
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CASE
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WHEN n_live_tup = 0 THEN 0
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ELSE round((n_dead_tup::numeric / n_live_tup) * 100, 2)
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END as dead_ratio_percent
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FROM pg_stat_user_tables
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WHERE schemaname = 'public'
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AND relname IN ('subdomain', 'ip_address', 'port', 'website', 'endpoint', 'directory')
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ORDER BY n_dead_tup DESC;
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\echo ''
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\echo '索引使用情况:'
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SELECT
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schemaname || '.' || relname as table_name,
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indexname,
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idx_scan as index_scans,
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idx_tup_read as rows_read,
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idx_tup_fetch as rows_fetched,
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pg_size_pretty(pg_relation_size(indexname::regclass)) as index_size
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FROM pg_stat_user_indexes
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WHERE schemaname = 'public'
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AND relname IN ('subdomain', 'ip_address', 'port', 'website', 'endpoint', 'directory')
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ORDER BY idx_scan DESC;
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\echo ''
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\echo '表统计增量（本次测试产生）:'
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SELECT
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schemaname || '.' || relname as table_name,
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n_tup_ins as total_inserts,
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n_tup_upd as total_updates,
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n_tup_del as total_deletes,
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n_tup_hot_upd as hot_updates
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FROM pg_stat_user_tables
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WHERE schemaname = 'public'
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AND relname IN ('subdomain', 'ip_address', 'port', 'website', 'endpoint', 'directory')
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ORDER BY n_tup_ins DESC;
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\echo ''
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\echo '缓存命中率（测试后）:'
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SELECT
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sum(heap_blks_hit) as heap_blocks_hit,
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sum(heap_blks_read) as heap_blocks_read,
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CASE
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WHEN sum(heap_blks_hit) + sum(heap_blks_read) = 0 THEN 0
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ELSE round((sum(heap_blks_hit)::numeric / (sum(heap_blks_hit) + sum(heap_blks_read))) * 100, 2)
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END as cache_hit_ratio_percent
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FROM pg_statio_user_tables
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WHERE schemaname = 'public';
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\echo ''
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\echo 'IO 统计:'
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SELECT
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sum(heap_blks_read) as heap_blocks_read_from_disk,
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sum(heap_blks_hit) as heap_blocks_hit_in_cache,
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sum(idx_blks_read) as index_blocks_read_from_disk,
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sum(idx_blks_hit) as index_blocks_hit_in_cache
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FROM pg_statio_user_tables
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WHERE schemaname = 'public';
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\echo ''
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\echo '长时间运行查询:'
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SELECT
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pid,
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usename,
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application_name,
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state,
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EXTRACT(EPOCH FROM (now() - query_start))::int as duration_seconds,
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query
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FROM pg_stat_activity
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WHERE datname = current_database()
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AND state != 'idle'
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AND query NOT LIKE '%pg_stat_activity%'
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ORDER BY query_start;
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\echo ''
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\echo '数据库总大小:'
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SELECT
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pg_size_pretty(pg_database_size(current_database())) as database_size;
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\echo ''
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\echo '========================================'
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