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This commit is contained in:
Alexey Milovidov 2020-07-13 03:45:37 +03:00
parent 98d2109c95
commit 5afe441324
1 changed files with 2 additions and 1 deletions
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src/IO/ReadBufferFromFileDescriptor.cpp
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@ -70,7 +70,8 @@ bool ReadBufferFromFileDescriptor::nextImpl()
/// It reports real time spent including the time spent while thread was preempted doing nothing.
/// And it is Ok for the purpose of this watch (it is used to lower the number of threads to read from tables).
/// Sometimes it is better to use taskstats::blkio_delay_total, but it is quite expensive to get it (TaskStatsInfoGetter has about 500K RPS).
/// Sometimes it is better to use taskstats::blkio_delay_total, but it is quite expensive to get it
/// (TaskStatsInfoGetter has about 500K RPS).
watch.stop();
ProfileEvents::increment(ProfileEvents::DiskReadElapsedMicroseconds, watch.elapsedMicroseconds());