i am facing high epoll_wait time when i used this command to check the page execution.
strace -o output.txt -f -r -s4096 -p 21605
the outout was big txt file but i was interested in this piece of data and unable to find out the reason of this. the data is for a dynamic php page and its not too heavy so i dont expect this much long response time
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
i am really unhappy with this 0.611909 time in epoll and 0.103429 accept4 . any help to improve these performance will be great