数据仓库服务 GAUSSDB(DWS)-统计信息函数:pgxc_get_xlog_stats()
时间：2024-04-18 16:25:03
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pgxc_get_xlog_stats()
描述：在CN上执行，统计各个DN节点自开机到当前不同xlog类型数量。该函数仅8.3.0及以上集群版本支持。
返回值类型：record
返回信息如下：
名称 |
类型 |
描述 |
|---|---|---|
node_name |
text |
节点名称。 |
rmgr_name |
text |
xlog主类型。 |
record_info |
text |
xlog info信息。 |
record_count |
bigint |
数量信息。 |
count_pct |
text |
数量占比。 |
record_size |
bigint |
record大小， 单位byte。 |
record_pct |
text |
record大小占比。 |
fpi_size |
bigint |
fpi(full page image)大小，单位byte。 |
fpi_pct |
text |
fpi大小占比。 |
combined_size |
bigint |
xlog总大小，单位byte。 |
combined_pct |
text |
xlog总大小占比。 |
- 该函数只统计DN节点最近一次启动以来，不同类型的xlog数量与大小。
- 该函数统计的xlog的大小未考虑到其写盘时的对齐问题，与实际xlog段文件大小存在部分误差。
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 |
SELECT * FROM pgxc_get_xlog_stats(); node_name | rmgr_name | record_info | record_count | count_pct | record_size | record_pct | fpi_size | fpi_pct | combined_size | combined _pct -----------+-------------+-------------------------------+--------------+-----------+-------------+------------+----------+---------+---------------+--------- ----- datanode1 | XLOG | checkpoint: shutdown | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | XLOG | checkpoint: online | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | XLOG | xlog no-op | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | XLOG | nextOid | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | XLOG | xlog switch | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | XLOG | backup end | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | XLOG | parameter change | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | XLOG | restore point | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | XLOG | full page writes | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | XLOG | xlog recovery end | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | XLOG | page hint | 1 | 0.12% | 56 | 0.11% | 8192 | 17.92% | 8248 | 8.71% datanode1 | XLOG | xlog fpi | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Transaction | commit | 3 | 0.35% | 246 | 0.50% | 0 | 0.00% | 246 | 0.26% datanode1 | Transaction | prepare | 1 | 0.12% | 469 | 0.96% | 0 | 0.00% | 469 | 0.50% datanode1 | Transaction | abort | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Transaction | commit prepared | 1 | 0.12% | 106 | 0.22% | 0 | 0.00% | 106 | 0.11% datanode1 | Transaction | abort prepared | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Transaction | xid assignment xtop | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Transaction | commit compact | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Storage | file create | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Storage | file truncate | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Storage | vacuum clear file | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | CLOG | zero page | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | CLOG | truncate before | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Database | create db | 1 | 0.12% | 50 | 0.10% | 0 | 0.00% | 50 | 0.05% datanode1 | Database | drop db | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Tablespace | create tablespace | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Tablespace | drop tablespace | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Tablespace | relative create | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | MultiXact | zero offsets page | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | MultiXact | zero members page | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | MultiXact | create multixact | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | RelMap | update relmap | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Standby | AccessExclusive locks | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Standby | xlog running xacts | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Standby | release AccessExclusive locks | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Standby | xlog standby csn | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Heap2 | freeze | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Heap2 | clean | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Heap2 | page upgrade | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Heap2 | cleanup info | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Heap2 | visible | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Heap2 | multi-insert | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Heap2 | bcm | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Heap2 | logical newpage rel | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Heap2 | no repair page | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Heap2 | multi-insert(init) base xid | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Heap | insert | 280 | 32.67% | 15964 | 32.63% | 14314 | 31.31% | 30278 | 31.99% datanode1 | Heap | delete | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Heap | update | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Heap | base shift | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Heap | hot update | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Heap | new page | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Heap | lock type | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Heap | inplace | 2 | 0.23% | 116 | 0.24% | 8164 | 17.86% | 8280 | 8.75% datanode1 | Heap | init page | 2 | 0.23% | 130 | 0.27% | 92 | 0.20% | 222 | 0.23% datanode1 | Heap | insert(init) base xid | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Btree | insert leaf | 562 | 65.58% | 31484 | 64.35% | 13352 | 29.21% | 44836 | 47.37% datanode1 | Btree | insert upper | 1 | 0.12% | 72 | 0.15% | 148 | 0.32% | 220 | 0.23% datanode1 | Btree | insert meta | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Btree | split left | 1 | 0.12% | 78 | 0.16% | 744 | 1.63% | 822 | 0.87% datanode1 | Btree | split right | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Btree | split left root | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Btree | split right root | 1 | 0.12% | 78 | 0.16% | 672 | 1.47% | 750 | 0.79% datanode1 | Btree | delete | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Btree | delete page | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Btree | delete page meta | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Btree | lev | 1 | 0.12% | 78 | 0.16% | 40 | 0.09% | 118 | 0.12% datanode1 | Btree | delete page half | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Btree | vacuum | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Btree | reuse page | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Gin | Create index | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Gin | Create ptree | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Gin | Insert item | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Gin | Page split | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Gin | Vacuum page | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Gin | Delete page | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Gin | Update metapage | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Gin | Insert new list page | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Gin | Delete list pages | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Gin | Vacuum data leaf page | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Gist | page update | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Gist | page split | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Gist | Create index | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Gist | page delete | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Sequence | log | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | SPGist | create index | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | SPGist | add leaf to page | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | SPGist | move leafs | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | SPGist | add node | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | SPGist | prefix off | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | SPGist | picksplit | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | SPGist | vacuum leaf | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | SPGist | vacuum root | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | SPGist | newest XID | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Slot | create slot | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Slot | advance slot | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Slot | drop slot | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Slot | check slot | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Heap3 | new cid | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Heap3 | heap rewrite | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% datanode1 | Barrier | barrier | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% (102 rows) |
support.huaweicloud.com/sqlreference-830-dws/dws_06_0065.html
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