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When the query cache is disabled, the server shouldn't attempt to take the
query cache mutex.
By using the command line option --query_cache_type=0, the user can disable
(backport from mysql-pe)
16 lines
491 B
Plaintext
16 lines
491 B
Plaintext
-- source include/have_query_cache.inc
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#
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# Bug#38551 query cache can still consume [very little] cpu time even when it is off.
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#
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SHOW GLOBAL VARIABLES LIKE 'query_cache_type';
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--error ER_QUERY_CACHE_DISABLED
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SET GLOBAL query_cache_type=ON;
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--error ER_QUERY_CACHE_DISABLED
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SET GLOBAL query_cache_type=DEMAND;
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--error ER_QUERY_CACHE_DISABLED
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SET GLOBAL query_cache_type=OFF;
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SET GLOBAL query_cache_size=1024*1024;
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SHOW GLOBAL VARIABLES LIKE 'query_cache_size';
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SET GLOBAL query_cache_size=0;
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