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Add support for Linux flushes and discards in IOCountersStat #1307

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Add support for Linux flushes and discards in IOCountersStat #1307

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@jmalicki jmalicki commented Jun 1, 2022 

These were added in kernels 4.18 and 5.5, respectively.

Flushes (i.e. fsyncs) are especially important for logging for database servers and
the like, as flushes can be a very limiting factor on IO throughput.

@jmalicki
Add support for Linux discards and flushes in IOCounterStats.
6f716d1 
These were added in kernels 4.18 and 5.5, respectively.

Flushes (i.e. fsyncs) are especially important for logging for database servers and
the like, as flushes can be a very limiting factor on IO throughput.
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