add Learn how to enable libhugetlbfs to increase performance #611
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jthackray
reviewed
Jan 12, 2024
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| - questions: | ||
| question: > | ||
| libhugetlbfs could only eanble code section of a program, is it true? |
jthackray
reviewed
Jan 12, 2024
| - No | ||
| correct_answer: 2 | ||
| explanation: > | ||
| Though code sectition is the typical section to be placed in hugepage, other sections like data can also be placed in hugepage. |
jthackray
reviewed
Jan 12, 2024
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| - questions: | ||
| question: > | ||
| After enabling libhugetlbfs on MySQL, which perf event would be decresed dramatically? |
jthackray
reviewed
Jan 12, 2024
| $ HUGETLB_ELFMAP=RW /home/mysql/mysql_install/1-install_8.0.33_huge/bin/mysqld ... | ||
| ``` | ||
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| please note don't export HUGETLB_ELFMAP=RW as an environment varible, it has to be specified right before the mysqld exectuable. |
jthackray
reviewed
Jan 12, 2024
| $ HUGETLB_ELFMAP=RW [path-to-redis]/src/redis-server redis.conf | ||
| ``` | ||
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| please note don't export HUGETLB_ELFMAP=RW as an environment varible, it has to be specified right before the mysqld exectuable. |
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nit: typo: s/exectuable/executable/
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