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Re: MySQL became too slowly when using O_DIRECT
Posted by: Jerry Lin
Date: June 11, 2018 04:44AM

| sql_quote_show_create | ON |
| sql_safe_updates | OFF |
| sql_select_limit | 18446744073709551615 |
| sql_slave_skip_counter | 0 |
| sql_warnings | OFF |
| ssl_ca | |
| ssl_capath | |
| ssl_cert | |
| ssl_cipher | |
| ssl_crl | |
| ssl_crlpath | |
| ssl_key | |
| stored_program_cache | 256 |
| super_read_only | OFF |
| sync_binlog | 1 |
| sync_frm | ON |
| sync_master_info | 10000 |
| sync_relay_log | 10000 |
| sync_relay_log_info | 10000 |
| system_time_zone | CST |
| table_definition_cache | 1400 |
| table_open_cache | 2000 |
| table_open_cache_instances | 16 |
| thread_cache_size | 58 |
| thread_handling | one-thread-per-connection |
| thread_stack | 262144 |
| time_format | %H:%i:%s |
| time_zone | SYSTEM |
| timestamp | 1528685835.185170 |
| tls_version | TLSv1,TLSv1.1 |
| tmp_table_size | 16777216 |
| tmpdir | /tmp |
| transaction_alloc_block_size | 8192 |
| transaction_allow_batching | OFF |
| transaction_isolation | REPEATABLE-READ |
| transaction_prealloc_size | 4096 |
| transaction_read_only | OFF |
| transaction_write_set_extraction | OFF |
| tx_isolation | REPEATABLE-READ |
| tx_read_only | OFF |
| unique_checks | ON |
| updatable_views_with_limit | YES |
| version | 5.7.22-log |
| version_comment | MySQL Community Server (GPL) |
| version_compile_machine | x86_64 |
| version_compile_os | linux-glibc2.12 |
| wait_timeout | 28800 |
| warning_count | 0 |
+----------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
513 rows in set (0.00 sec)

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