Epoll_wait occasionally takes a long time

problem description

epoll_wait occasionally takes a long time

the environmental background of the problems and what methods you have tried

strace trace

related codes

/ / Please paste the code text below (do not replace the code with pictures)

21605      0.000043 semop(38830083, {{0, -1, SEM_UNDO}}, 1) = 0
21605      0.611909 epoll_wait(30, {{EPOLLIN, {u32=25218632, u64=25218632~~~, 4, 10000) = 1
21605      0.103429 accept4(3, {sa_family=AF_INET, sin_port=htons(56826), sin_addr=inet_addr("ip address")}, [16], SOCK_CLOEXEC) = 33
21605      0.000059 semop(38830083, {{0, 1, SEM_UNDO}}, 1) = 0

what result do you expect? What is the error message actually seen?

has got the answer, thanks to Han Da.
https://wiki.swoole.com/wiki/...

Jul.12,2022

has got the answer, thanks to Han Da.
https://wiki.swoole.com/wiki/...

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1bd94e3-309c0.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1bd94e3-309c0.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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