MySQL SlapをNDB対して実行して、メモリー割り当て変化の簡単な確認
[root@misc bin]# /usr/local/mysql/bin/mysqlslap --no-defaults --create-schema=SLAP --engine=ndb --auto-generate-sql --auto-generate-sql-add-autoincrement --engine=ndb --number-int-cols=3 --number-char-cols=5 --concurrency=10 --auto-generate-sql-write-number=10000 --auto-generate-sql-execute-number=10000 --auto-generate-sql-load-type=mixed -h 192.168.56.114 -u admin -p
Enter password:
Benchmark
Running for engine ndb
Average number of seconds to run all queries: 135.323 seconds
Minimum number of seconds to run all queries: 135.323 seconds
Maximum number of seconds to run all queries: 135.323 seconds
Number of clients running queries: 10
Average number of queries per client: 10000
[root@misc bin]#
Node, alloc_bytes,free_bytesを確認する限りだと、ノード間のデータは同期されているので均等に分かれている。
こちらに、追加でノードグループを増やしたときのテーブル分割を次回確認してみる。
mysql> select * from memoryusage;
+---------+---------------------+---------+------------+-----------+-------------+
| node_id | memory_type | used | used_pages | total | total_pages |
+---------+---------------------+---------+------------+-----------+-------------+
| 1 | Data memory | 2129920 | 65 | 134217728 | 4096 |
| 1 | Index memory | 475136 | 58 | 67371008 | 8224 |
| 1 | Long message buffer | 2304 | 9 | 67108864 | 262144 |
| 2 | Data memory | 2129920 | 65 | 134217728 | 4096 |
| 2 | Index memory | 475136 | 58 | 67371008 | 8224 |
| 2 | Long message buffer | 2304 | 9 | 67108864 | 262144 |
+---------+---------------------+---------+------------+-----------+-------------+
6 rows in set (0.02 sec)
mysql> select * from resources;
+---------+---------------------+----------+------+-------+
| node_id | resource_name | reserved | used | max |
+---------+---------------------+----------+------+-------+
| 1 | RESERVED | 4113 | 5495 | 13703 |
| 1 | DISK_OPERATIONS | 0 | 0 | 0 |
| 1 | DISK_RECORDS | 0 | 0 | 0 |
| 1 | DATA_MEMORY | 6152 | 2158 | 6152 |
| 1 | JOBBUFFER | 0 | 0 | 0 |
| 1 | FILE_BUFFERS | 1152 | 1096 | 1152 |
| 1 | TRANSPORTER_BUFFERS | 0 | 0 | 0 |
| 1 | DISK_PAGE_BUFFER | 2240 | 2240 | 2240 |
| 1 | QUERY_MEMORY | 0 | 0 | 0 |
| 1 | SCHEMA_TRANS_MEMORY | 64 | 1 | 0 |
| 2 | RESERVED | 4113 | 5495 | 13703 |
| 2 | DISK_OPERATIONS | 0 | 0 | 0 |
| 2 | DISK_RECORDS | 0 | 0 | 0 |
| 2 | DATA_MEMORY | 6152 | 2158 | 6152 |
| 2 | JOBBUFFER | 0 | 0 | 0 |
| 2 | FILE_BUFFERS | 1152 | 1096 | 1152 |
| 2 | TRANSPORTER_BUFFERS | 0 | 0 | 0 |
| 2 | DISK_PAGE_BUFFER | 2240 | 2240 | 2240 |
| 2 | QUERY_MEMORY | 0 | 0 | 0 |
| 2 | SCHEMA_TRANS_MEMORY | 64 | 1 | 0 |
+---------+---------------------+----------+------+-------+
20 rows in set (0.01 sec)
mysql> select * from memoryusage;
+---------+---------------------+---------+------------+-----------+-------------+
| node_id | memory_type | used | used_pages | total | total_pages |
+---------+---------------------+---------+------------+-----------+-------------+
| 1 | Data memory | 3735552 | 114 | 134217728 | 4096 |
| 1 | Index memory | 524288 | 64 | 67371008 | 8224 |
| 1 | Long message buffer | 2304 | 9 | 67108864 | 262144 |
| 2 | Data memory | 3735552 | 114 | 134217728 | 4096 |
| 2 | Index memory | 524288 | 64 | 67371008 | 8224 |
| 2 | Long message buffer | 2304 | 9 | 67108864 | 262144 |
+---------+---------------------+---------+------------+-----------+-------------+
6 rows in set (0.00 sec)
mysql> select node_id AS node, fragment_num AS frag,
-> fixed_elem_alloc_bytes alloc_bytes,
-> fixed_elem_free_bytes AS free_bytes
-> from ndbinfo.memory_per_fragment where fq_name like '%t1%';
+------+------+-------------+------------+
| node | frag | alloc_bytes | free_bytes |
+------+------+-------------+------------+
| 1 | 0 | 98304 | 6624 |
| 1 | 1 | 98304 | 4080 |
| 2 | 0 | 98304 | 6624 |
| 2 | 1 | 98304 | 4032 |
+------+------+-------------+------------+
4 rows in set (0.01 sec)
mysql> select node_id AS node, fragment_num AS frag,
-> fixed_elem_alloc_bytes alloc_bytes,
-> fixed_elem_free_bytes AS free_bytes
-> from ndbinfo.memory_per_fragment where fq_name like '%t1%';
+------+------+-------------+------------+
| node | frag | alloc_bytes | free_bytes |
+------+------+-------------+------------+
| 1 | 0 | 524288 | 26928 |
| 1 | 1 | 524288 | 27984 |
| 2 | 0 | 524288 | 26880 |
| 2 | 1 | 524288 | 27984 |
+------+------+-------------+------------+
4 rows in set (0.02 sec)
mysql> select node_id AS node, fragment_num AS frag,
-> fixed_elem_alloc_bytes alloc_bytes,
-> fixed_elem_free_bytes AS free_bytes
-> from ndbinfo.memory_per_fragment where fq_name like '%t1%';
+------+------+-------------+------------+
| node | frag | alloc_bytes | free_bytes |
+------+------+-------------+------------+
| 1 | 0 | 819200 | 27888 |
| 1 | 1 | 819200 | 30720 |
| 2 | 0 | 819200 | 27888 |
| 2 | 1 | 819200 | 30672 |
+------+------+-------------+------------+
4 rows in set (0.02 sec)
mysql> select node_id AS node, fragment_num AS frag,
-> fixed_elem_alloc_bytes alloc_bytes,
-> fixed_elem_free_bytes AS free_bytes
-> from ndbinfo.memory_per_fragment where fq_name like '%t1%';
+------+------+-------------+------------+
| node | frag | alloc_bytes | free_bytes |
+------+------+-------------+------------+
| 1 | 0 | 1212416 | 22272 |
| 1 | 1 | 1212416 | 16080 |
| 2 | 0 | 1212416 | 22272 |
| 2 | 1 | 1212416 | 16032 |
+------+------+-------------+------------+
4 rows in set (0.02 sec)
mysql> select node_id AS node, fragment_num AS frag,
-> fixed_elem_alloc_bytes alloc_bytes,
-> fixed_elem_free_bytes AS free_bytes
-> from ndbinfo.memory_per_fragment where fq_name like '%t1%';
Empty set (0.02 sec)
mysql>
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