From fdfef09c88af77157c81a75044f877e75995bf26 Mon Sep 17 00:00:00 2001 From: Ti Chi Robot Date: Mon, 13 Jan 2025 11:14:01 +0800 Subject: [PATCH] Update cop rpc execution info (#19485) (#19530) --- sql-statements/sql-statement-explain-analyze.md | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/sql-statements/sql-statement-explain-analyze.md b/sql-statements/sql-statement-explain-analyze.md index 8f85c01f8738..3d999425eeda 100644 --- a/sql-statements/sql-statement-explain-analyze.md +++ b/sql-statements/sql-statement-explain-analyze.md @@ -90,7 +90,7 @@ EXPLAIN ANALYZE SELECT * FROM t1; +-------------------+----------+---------+-----------+---------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+--------------------------------+-----------+------+ | id | estRows | actRows | task | access object | execution info | operator info | memory | disk | +-------------------+----------+---------+-----------+---------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+--------------------------------+-----------+------+ -| TableReader_5 | 10000.00 | 3 | root | | time:278.2µs, loops:2, cop_task: {num: 1, max: 437.6µs, proc_keys: 3, rpc_num: 1, rpc_time: 423.9µs, copr_cache_hit_ratio: 0.00} | data:TableFullScan_4 | 251 Bytes | N/A | +| TableReader_5 | 10000.00 | 3 | root | | time:278.2µs, loops:2, cop_task: {num: 1, max: 437.6µs, proc_keys: 3, copr_cache_hit_ratio: 0.00}, rpc_info:{Cop:{num_rpc:1, total_time:423.9µs}} | data:TableFullScan_4 | 251 Bytes | N/A | | └─TableFullScan_4 | 10000.00 | 3 | cop[tikv] | table:t1 | tikv_task:{time:0s, loops:1}, scan_detail: {total_process_keys: 3, total_process_keys_size: 111, total_keys: 4, rocksdb: {delete_skipped_count: 0, key_skipped_count: 3, block: {cache_hit_count: 0, read_count: 0, read_byte: 0 Bytes}}} | keep order:false, stats:pseudo | N/A | N/A | +-------------------+----------+---------+-----------+---------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+--------------------------------+-----------+------+ 2 rows in set (0.00 sec) @@ -119,15 +119,15 @@ EXPLAIN ANALYZE SELECT * FROM t1; `TableReader` 算子可能包含以下执行信息： ``` -cop_task: {num: 6, max: 1.07587ms, min: 844.312µs, avg: 919.601µs, p95: 1.07587ms, max_proc_keys: 16, p95_proc_keys: 16, tot_proc: 1ms, tot_wait: 1ms, rpc_num: 6, rpc_time: 5.313996ms, copr_cache_hit_ratio: 0.00} +cop_task: {num: 6, max: 1.07587ms, min: 844.312µs, avg: 919.601µs, p95: 1.07587ms, max_proc_keys: 16, p95_proc_keys: 16, tot_proc: 1ms, tot_wait: 1ms, copr_cache_hit_ratio: 0.00}, rpc_info:{Cop:{num_rpc:6, total_time:5.313996ms}} ``` - `cop_task`：包含 cop task 的相关信息，如： - `num`：cop task 的数量 - `max`,`min`,`avg`,`p95`：所有 cop task 中执行时间的最大值，最小值，平均值和 P95 值。 - `max_proc_keys`, `p95_proc_keys`：所有 cop task 中 tikv 扫描 kv 数据的最大值，P95 值，如果 max 和 p95 的值差距很大，说明数据分布不太均匀。 - - `rpc_num`, `rpc_time`：向 TiKV 发送 `Cop` 类型的 RPC 请求总数量和总时间。 - `copr_cache_hit_ratio`：cop task 请求的 Coprocessor Cache 缓存命中率。[Coprocessor Cache 配置](/tidb-configuration-file.md)。 +- `rpc_info`：按照向 TiKV 发送 RPC 请求的类型统计总数量和总时间。 - `backoff`：包含不同类型的 backoff 以及等待总耗时。 ### Insert