我有个虫子。他随机出现。5月2-3日正常工作，但在某些事件后，启动高负载cpu
screen
当php fpm出现时，我确实会跟踪它
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=695, si_uid=33, si_status=0, ...} ---
getpid() = 10154
write(8, "C", 1) = -1 EAGAIN (Resource temporarily unavailable)
rt_sigreturn() = 56
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f5c688b6a10) = 707
clock_gettime(CLOCK_MONOTONIC, {760605, 823753717}) = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=701, si_uid=33, si_status=0, si_utime=0, si_stime=0} ---
write(8, "C", 1) = -1 EAGAIN (Resource temporarily unavailable)
rt_sigreturn() = 140034873437968
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=698, si_uid=33, si_status=0, si_utime=0, si_stime=0} ---
write(8, "C", 1) = -1 EAGAIN (Resource temporarily unavailable)
rt_sigreturn() = 140034873437968
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, NULL) = 32743
clock_gettime(CLOCK_MONOTONIC, {760605, 824399822}) = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f5c688b6a10) = 708
clock_gettime(CLOCK_MONOTONIC, {760605, 825037147}) = 0
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, NULL) = 32744
clock_gettime(CLOCK_MONOTONIC, {760605, 825227552}) = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f5c688b6a10) = ? ERESTARTNOINTR (To be restarted)
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=702, si_uid=33, si_status=0, si_utime=0, si_stime=0} ---
getpid() = 10154
write(8, "C", 1) = -1 EAGAIN (Resource temporarily unavailable)
rt_sigreturn() = 56
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f5c688b6a10) = 710
clock_gettime(CLOCK_MONOTONIC, {760605, 827677677}) = 0
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, NULL) = 32747
clock_gettime(CLOCK_MONOTONIC, {760605, 827886974}) = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f5c688b6a10) = 711
clock_gettime(CLOCK_MONOTONIC, {760605, 828755896}) = 0
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, NULL) = 32748
clock_gettime(CLOCK_MONOTONIC, {760605, 828921349}) = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f5c688b6a10) = 712
clock_gettime(CLOCK_MONOTONIC, {760605, 829779218}) = 0
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, NULL) = 32749
clock_gettime(CLOCK_MONOTONIC, {760605, 829951780}) = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f5c688b6a10) = 713
clock_gettime(CLOCK_MONOTONIC, {760605, 830916994}) = 0
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG|WSTOPPED, NULL) = 32750
clock_gettime(CLOCK_MONOTONIC, {760605, 831123550}) = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f5c688b6a10) = ? ERESTARTNOINTR (To be restarted)
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=707, si_uid=33, si_status=0, si_utime=0, si_stime=0} ---
getpid() = 10154
write(8, "C", 1) = -1 EAGAIN (Resource temporarily unavailable)
rt_sigreturn() = 56
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f5c688b6a10) = ? ERESTARTNOINTR (To be restarted)
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=708, si_uid=33, si_status=0, si_utime=0, si_stime=0} ---
getpid() = 10154
write(8, "C", 1) = -1 EAGAIN (Resource temporarily unavailable)
rt_sigreturn() = 56
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f5c688b6a10) = ? ERESTARTNOINTR (To be restarted)
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=710, si_uid=33, si_status=0, si_utime=0, si_stime=0} ---
更新内核不能解决这个问题？
仅帮助重新启动php fpm进程
你能给我什么建议？谢谢
最佳答案
这是因为你的插座，当他不能写的时候，它正在试着写：
write(8, "C", 1) = -1 EAGAIN (Resource temporarily unavailable)
rt_sigreturn() = 56
由于没有任何方法可以更改源代码，因此需要降级php版本，看看它是否能够在没有这个套接字问题的情况下完成任务。
查看更多：
Why STRACE shows EAGAIN (Resource temporarily unavailable)
关于php - php7.0-fpm高负载CPU，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/45522547/