# Fd Thundering Herd

+ thundering herd refers to multiple processes (multiple threads) blocking waiting for the same event at the same time, if the waiting event is triggered, then he will wake up all waiting processes (or thread), but in the end only one process (thread) can get this control, while other processes (thread) can only go back to sleep, this phenomenon and performance waste is called thundering herd.
+ The Linux kernel needs to be upgraded to a sufficiently high version in order to avoid thundering herd on the system

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FD thundering herd check
thundering herd refers to multiple processes (multiple threads) blocking waiting for the same event at the same time, if the waiting event is triggered, then he will wake up all waiting processes (or thread), but in the end only one process (thread) can get this control, while other processes (thread) can only go back to sleep, this phenomenon and performance waste is called thundering herd.

The Linux kernel needs to be upgraded to a sufficiently high version in order to avoid a thundering herd on the system. The Linux kernel version for the operating system version required in the previous section is compliant.