Doing strace on a nginx child in the shutdown state i get
##
strace -p 23846
strace: Process 23846 attached
restart_syscall(<... resuming interrupted futex ...>
) = -1 ETIMEDOUT (Connection timed out)
futex(0x7a6c0078, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0x7a6c00c4, FUTEX_WAIT_BITSE
Check if any of the sites you run on the server gets crawled by any crawlers
around the time you see an increase – I know that a crawler such as Screaming
Frog doesn’t handle servers that are capable of http2 connections and have it
activated for sites that are getting crawled, and will result i
