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93522bc9a9
commit a993310593 (MDEV-24537)
introduced the regression that the page cleaner will keep sleeping
even if there is work to do.
innodb_max_dirty_pages_pct_update(): Always wake up the page cleaner
on any SET GLOBAL innodb_max_dirty_pages_pct= assignment.
buf_flush_page_cleaner(): If innodb_max_dirty_pages_pct is nonzero,
consult only that parameter when determining whether there is work
to do. Else, consult innodb_max_dirty_pages.
14 lines
609 B
Text
14 lines
609 B
Text
SET @save_pct= @@GLOBAL.innodb_max_dirty_pages_pct;
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SET @save_pct_lwm= @@GLOBAL.innodb_max_dirty_pages_pct_lwm;
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SET GLOBAL innodb_max_dirty_pages_pct_lwm=0.0;
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SET GLOBAL innodb_max_dirty_pages_pct=0.0;
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SET GLOBAL innodb_max_dirty_pages_pct=90.0;
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CREATE TABLE t ENGINE=InnoDB SELECT * FROM seq_1_to_10000;
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SELECT variable_value>0 FROM information_schema.global_status
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WHERE variable_name = 'INNODB_BUFFER_POOL_PAGES_DIRTY';
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variable_value>0
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1
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SET GLOBAL innodb_max_dirty_pages_pct=0.0;
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DROP TABLE t;
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SET GLOBAL innodb_max_dirty_pages_pct = @save_pct;
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SET GLOBAL innodb_max_dirty_pages_pct_lwm = @save_pct_lwm;
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