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We have innodb_use_native_aio=ON by default since the introduction of that parameter in commit 2f9fb41b05c7034f7265d4981dea0aa05b4a00b2 (MySQL 5.5 and MariaDB 5.5). However, to really benefit from the setting, the files should be opened in O_DIRECT mode, to bypass the file system cache. In this way, the reads and writes can be submitted with DMA, using the InnoDB buffer pool directly, and no processor cycles need to be used for copying data. The use of O_DIRECT benefits not only the current libaio implementation, but also liburing. os_file_set_nocache(): Test innodb_flush_method in the function, not in the callers.
20 lines
1.2 KiB
Plaintext
20 lines
1.2 KiB
Plaintext
#/bin/sh
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hw="2xPentium(R) 3.2 GHz, 1M cache, 4G memory"
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optimization="gcc 4.1.2 -m64 -O3 --static"
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machine="Linux-x64"
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# InnoDB tests
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./run-all-tests --suffix=-innodb --comments="Engine=InnoDB --innodb_buffer_pool_size=256M --innodb_log_file_size=2000M --innodb_log_buffer_size=16M --innodb_lock_wait_timeout=50 --innodb_flush_log_at_trx_commit=1 --create-options="ENGINE=InnoDB" --hw="$hw" --optimization="$optimization" --machine="$machine" --log
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./run-all-tests --suffix=_fast-innodb --comments="Engine=InnoDB --innodb_buffer_pool_size=256M --innodb_log_file_size=2000M --innodb_log_buffer_size=16M --innodb_lock_wait_timeout=50 --innodb_flush_log_at_trx_commit=1 --create-options="ENGINE=InnoDB" --hw="$hw" --optimization="$optimization" --machine="$machine" --fast --log
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# MyISAM tests
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./run-all-tests --suffix=-myisam --comments="Engine=MyISAM key_buffer_size=256M" --create-options="ENGINE=myisam" --hw="$hw" --optimization="$optimization" --machine="$machine" --log
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./run-all-tests --suffix=_fast-myisam --comments="Engine=MyISAM key_buffer_size=256M" --create-options="ENGINE=myisam" --hw="$hw" --optimization="$optimization" --machine="$machine" --fast --log
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compare-results --relative output/RUN-mysql-myisam-* output/RUN-mysql_fast-myisam* output/RUN-mysql*
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