manual.texi Add warning about too-high table_cache value
Docs/manual.texi: Add warning about too-high table_cache value
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@ -20067,6 +20067,11 @@ variable. @xref{SHOW}. If this variable is big and you don't do
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@code{FLUSH TABLES} a lot (which just forces all tables to be closed and
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reopenend), then you should increase the value of this variable.
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Make sure that your operating system can handle the number of open file
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descriptors implied by the @code{table_cache} setting. If @code{table_cache}
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is set too high, @strong{MySQL} may run out of file descriptors and refuse
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connections, fail to perform queries, and be very unreliable.
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For information about how the table cache works, see @ref{Table cache}.
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@item @code{thread_cache_size}
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