strace

[pid 281253] 13:20:26.127748 <... futex resumed>) = -1 ETIMEDOUT (Connection timed out)
[pid 281258] 13:20:26.127800 <... epoll_pwait resumed>[], 128, 0, NULL, 0) = 0
[pid 281258] 13:20:26.127995 futex(0xc000100148, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 281253] 13:20:26.128047 futex(0xc00058e148, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 281258] 13:20:26.128117 <... futex resumed>) = 1
[pid 281256] 13:20:26.128163 <... futex resumed>) = 0
[pid 281259] 13:20:26.128222 <... futex resumed>) = 0
[pid 281258] 13:20:26.128269 epoll_pwait(3,  <unfinished ...>
[pid 281253] 13:20:26.128327 <... futex resumed>) = 1
[pid 281259] 13:20:26.128388 epoll_pwait(3,  <unfinished ...>
[pid 281258] 13:20:26.128426 <... epoll_pwait resumed>[], 128, 0, NULL, 824634393320) = 0
[pid 281256] 13:20:26.128464 epoll_pwait(3,  <unfinished ...>
[pid 281259] 13:20:26.128524 <... epoll_pwait resumed>[], 128, 0, NULL, 0) = 0
[pid 281253] 13:20:26.128564 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281256] 13:20:26.128618 <... epoll_pwait resumed>[], 128, 0, NULL, 0) = 0
[pid 281259] 13:20:26.128669 futex(0xc00058e148, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 281258] 13:20:26.128719 epoll_pwait(3,  <unfinished ...>
[pid 281256] 13:20:26.128764 futex(0xc000100148, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 281253] 13:20:26.128800 <... nanosleep resumed>NULL) = 0
[pid 281253] 13:20:26.128861 futex(0x40f0e58, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=99364437} <unfinished ...>
[pid 281258] 13:20:26.228507 <... epoll_pwait resumed>[], 128, 99, NULL, 0) = 0
[pid 281253] 13:20:26.228612 <... futex resumed>) = -1 ETIMEDOUT (Connection timed out)
[pid 281258] 13:20:26.228718 epoll_pwait(3,  <unfinished ...>
[pid 281253] 13:20:26.228814 futex(0xc000100148, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 281258] 13:20:26.228906 <... epoll_pwait resumed>[], 128, 0, NULL, 0) = 0
[pid 281256] 13:20:26.228990 <... futex resumed>) = 0
[pid 281253] 13:20:26.229058 <... futex resumed>) = 1
[pid 281258] 13:20:26.229139 futex(0xc00058e148, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 281256] 13:20:26.229211 epoll_pwait(3,  <unfinished ...>
[pid 281259] 13:20:26.229315 <... futex resumed>) = 0
[pid 281258] 13:20:26.229376 <... futex resumed>) = 1
[pid 281256] 13:20:26.229434 <... epoll_pwait resumed>[], 128, 0, NULL, 0) = 0
[pid 281253] 13:20:26.229482 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281259] 13:20:26.229585 epoll_pwait(3,  <unfinished ...>
[pid 281258] 13:20:26.229643 epoll_pwait(3,  <unfinished ...>
[pid 281256] 13:20:26.229707 epoll_pwait(3,  <unfinished ...>
[pid 281259] 13:20:26.229782 <... epoll_pwait resumed>[], 128, 0, NULL, 0) = 0
[pid 281258] 13:20:26.229827 <... epoll_pwait resumed>[], 128, 0, NULL, 824634393512) = 0
[pid 281253] 13:20:26.229878 <... nanosleep resumed>NULL) = 0
[pid 281259] 13:20:26.229951 futex(0xc00058e148, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 281258] 13:20:26.230008 write(5, "\0", 1 <unfinished ...>
[pid 281253] 13:20:26.230073 futex(0x40f0e58, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=99525042} <unfinished ...>
[pid 281258] 13:20:26.230160 <... write resumed>) = 1
[pid 281256] 13:20:26.230199 <... epoll_pwait resumed>[{EPOLLIN, {u32=68283432, u64=68283432}}], 128, 3738, NULL, 0) = 1
[pid 281258] 13:20:26.230280 futex(0xc000427648, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 281256] 13:20:26.230352 read(4, "\0", 16) = 1
[pid 281256] 13:20:26.230578 epoll_pwait(3, [], 128, 0, NULL, 68283432) = 0
[pid 281256] 13:20:26.230754 epoll_pwait(3, [], 128, 98, NULL, 0) = 0
[pid 281256] 13:20:26.329879 futex(0xc000427648, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 281253] 13:20:26.330003 <... futex resumed>) = -1 ETIMEDOUT (Connection timed out)
[pid 281256] 13:20:26.330129 <... futex resumed>) = 1
[pid 281258] 13:20:26.330217 <... futex resumed>) = 0
[pid 281253] 13:20:26.330318 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281258] 13:20:26.330447 epoll_pwait(3,  <unfinished ...>
[pid 281256] 13:20:26.330559 epoll_pwait(3,  <unfinished ...>
[pid 281258] 13:20:26.330645 <... epoll_pwait resumed>[], 128, 0, NULL, 0) = 0
[pid 281253] 13:20:26.330704 <... nanosleep resumed>NULL) = 0
[pid 281256] 13:20:26.330773 <... epoll_pwait resumed>[], 128, 0, NULL, 824634393320) = 0
[pid 281258] 13:20:26.330854 epoll_pwait(3,  <unfinished ...>
[pid 281253] 13:20:26.330924 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281256] 13:20:26.331029 write(5, "\0", 1) = 1
[pid 281258] 13:20:26.331210 <... epoll_pwait resumed>[{EPOLLIN, {u32=68283432, u64=68283432}}], 128, 3637, NULL, 0) = 1
[pid 281253] 13:20:26.331298 <... nanosleep resumed>NULL) = 0
[pid 281258] 13:20:26.331383 read(4,  <unfinished ...>
[pid 281256] 13:20:26.331455 futex(0xc000100148, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 281253] 13:20:26.331532 futex(0x40f0e58, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=98867455} <unfinished ...>
[pid 281258] 13:20:26.331634 <... read resumed>"\0", 16) = 1
[pid 281258] 13:20:26.331762 epoll_pwait(3, [], 128, 0, NULL, 68283432) = 0
[pid 281258] 13:20:26.331948 epoll_pwait(3, [], 128, 98, NULL, 0) = 0
[pid 281253] 13:20:26.430786 <... futex resumed>) = -1 ETIMEDOUT (Connection timed out)
[pid 281258] 13:20:26.430897 futex(0xc000100148, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 281253] 13:20:26.430970 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281258] 13:20:26.431078 <... futex resumed>) = 1
[pid 281256] 13:20:26.431135 <... futex resumed>) = 0
[pid 281258] 13:20:26.431217 epoll_pwait(3,  <unfinished ...>
[pid 281253] 13:20:26.431272 <... nanosleep resumed>NULL) = 0
[pid 281256] 13:20:26.431322 epoll_pwait(3,  <unfinished ...>
[pid 281258] 13:20:26.431399 <... epoll_pwait resumed>[], 128, 0, NULL, 824634393512) = 0
[pid 281256] 13:20:26.431449 <... epoll_pwait resumed>[], 128, 0, NULL, 0) = 0
[pid 281253] 13:20:26.431500 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281258] 13:20:26.431580 epoll_pwait(3,  <unfinished ...>
[pid 281256] 13:20:26.431641 futex(0xc000100148, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 281253] 13:20:26.431706 <... nanosleep resumed>NULL) = 0
[pid 281253] 13:20:26.431785 futex(0x40f0e58, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=99405225} <unfinished ...>
[pid 281258] 13:20:26.531507 <... epoll_pwait resumed>[], 128, 99, NULL, 824634393512) = 0
[pid 281253] 13:20:26.531621 <... futex resumed>) = -1 ETIMEDOUT (Connection timed out)
[pid 281258] 13:20:26.531723 epoll_pwait(3,  <unfinished ...>
[pid 281253] 13:20:26.531834 futex(0xc000100148, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 281258] 13:20:26.531923 <... epoll_pwait resumed>[], 128, 0, NULL, 824634393512) = 0
[pid 281256] 13:20:26.532031 <... futex resumed>) = 0
[pid 281253] 13:20:26.532097 <... futex resumed>) = 1
[pid 281258] 13:20:26.532177 futex(0xc00058e148, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 281256] 13:20:26.532245 epoll_pwait(3,  <unfinished ...>
[pid 281253] 13:20:26.532327 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281259] 13:20:26.532449 <... futex resumed>) = 0
[pid 281258] 13:20:26.532513 <... futex resumed>) = 1
[pid 281256] 13:20:26.532568 <... epoll_pwait resumed>[], 128, 0, NULL, 0) = 0
[pid 281259] 13:20:26.532670 epoll_pwait(3,  <unfinished ...>
[pid 281258] 13:20:26.532744 epoll_pwait(3,  <unfinished ...>
[pid 281256] 13:20:26.532815 epoll_pwait(3,  <unfinished ...>
[pid 281253] 13:20:26.532887 <... nanosleep resumed>NULL) = 0
[pid 281259] 13:20:26.532969 <... epoll_pwait resumed>[], 128, 0, NULL, 0) = 0
[pid 281258] 13:20:26.533031 <... epoll_pwait resumed>[], 128, 0, NULL, 824634393320) = 0
[pid 281253] 13:20:26.533094 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281259] 13:20:26.533195 write(5, "\0", 1 <unfinished ...>
[pid 281258] 13:20:26.533291 write(5, "\0", 1 <unfinished ...>
[pid 281259] 13:20:26.533406 <... write resumed>) = 1
[pid 281258] 13:20:26.533470 <... write resumed>) = 1
[pid 281256] 13:20:26.533524 <... epoll_pwait resumed>[{EPOLLIN, {u32=68283432, u64=68283432}}], 128, -1, NULL, 0) = 1
[pid 281253] 13:20:26.533610 <... nanosleep resumed>NULL) = 0
[pid 281259] 13:20:26.533702 futex(0xc00058e148, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 281258] 13:20:26.533779 futex(0xc000427648, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 281256] 13:20:26.533886 read(4,  <unfinished ...>
[pid 281253] 13:20:26.533961 futex(0x40f0e58, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=98921765} <unfinished ...>
[pid 281256] 13:20:26.534060 <... read resumed>"\0\0", 16) = 2
[pid 281256] 13:20:26.534191 epoll_pwait(3, [], 128, 0, NULL, 68283432) = 0
[pid 281256] 13:20:26.534371 epoll_pwait(3, [], 128, 98, NULL, 0) = 0
[pid 281253] 13:20:26.633314 <... futex resumed>) = -1 ETIMEDOUT (Connection timed out)
[pid 281256] 13:20:26.633463 futex(0xc000427648, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 281253] 13:20:26.633566 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281258] 13:20:26.633706 <... futex resumed>) = 0
[pid 281256] 13:20:26.633795 <... futex resumed>) = 1
[pid 281258] 13:20:26.633963 epoll_pwait(3,  <unfinished ...>
[pid 281253] 13:20:26.634049 <... nanosleep resumed>NULL) = 0
[pid 281258] 13:20:26.634135 <... epoll_pwait resumed>[], 128, 0, NULL, 0) = 0
[pid 281256] 13:20:26.634203 epoll_pwait(3,  <unfinished ...>
[pid 281258] 13:20:26.634300 epoll_pwait(3,  <unfinished ...>
[pid 281253] 13:20:26.634371 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281256] 13:20:26.634465 <... epoll_pwait resumed>[], 128, 0, NULL, 824634393512) = 0
[pid 281256] 13:20:26.634595 write(5, "\0", 1 <unfinished ...>
[pid 281253] 13:20:26.634671 <... nanosleep resumed>NULL) = 0
[pid 281258] 13:20:26.634753 <... epoll_pwait resumed>[{EPOLLIN, {u32=68283432, u64=68283432}}], 128, 3333, NULL, 0) = 1
[pid 281256] 13:20:26.634838 <... write resumed>) = 1
[pid 281253] 13:20:26.634892 futex(0x40f0e58, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=99284108} <unfinished ...>
[pid 281258] 13:20:26.635001 read(4,  <unfinished ...>
[pid 281256] 13:20:26.635075 futex(0xc000100148, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 281258] 13:20:26.635161 <... read resumed>"\0", 16) = 1
[pid 281258] 13:20:26.635286 epoll_pwait(3, [], 128, 0, NULL, 68283432) = 0
[pid 281258] 13:20:26.635456 epoll_pwait(3, [], 128, 98, NULL, 0) = 0
[pid 281253] 13:20:26.734412 <... futex resumed>) = -1 ETIMEDOUT (Connection timed out)
[pid 281258] 13:20:26.734541 futex(0xc000100148, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 281253] 13:20:26.734633 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281258] 13:20:26.734777 <... futex resumed>) = 1
[pid 281256] 13:20:26.734870 <... futex resumed>) = 0
[pid 281258] 13:20:26.734979 epoll_pwait(3,  <unfinished ...>
[pid 281253] 13:20:26.735057 <... nanosleep resumed>NULL) = 0
[pid 281256] 13:20:26.735122 epoll_pwait(3,  <unfinished ...>
[pid 281258] 13:20:26.735222 <... epoll_pwait resumed>[], 128, 0, NULL, 824634393320) = 0
[pid 281256] 13:20:26.735288 <... epoll_pwait resumed>[], 128, 0, NULL, 0) = 0
[pid 281253] 13:20:26.735349 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281258] 13:20:26.735458 epoll_pwait(3,  <unfinished ...>
[pid 281256] 13:20:26.735531 futex(0xc000100148, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 281253] 13:20:26.735618 <... nanosleep resumed>NULL) = 0
[pid 281253] 13:20:26.735745 futex(0x40f0e58, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=99195408} <unfinished ...>
[pid 281258] 13:20:26.834937 <... epoll_pwait resumed>[], 128, 99, NULL, 824634393320) = 0
[pid 281258] 13:20:26.835119 epoll_pwait(3,  <unfinished ...>
[pid 281253] 13:20:26.835222 <... futex resumed>) = -1 ETIMEDOUT (Connection timed out)
[pid 281258] 13:20:26.835331 <... epoll_pwait resumed>[], 128, 0, NULL, 824634393320) = 0
[pid 281253] 13:20:26.835414 futex(0xc000100148, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 281258] 13:20:26.835534 futex(0xc00058e148, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 281256] 13:20:26.835648 <... futex resumed>) = 0
[pid 281253] 13:20:26.835725 <... futex resumed>) = 1
[pid 281259] 13:20:26.835821 <... futex resumed>) = 0
[pid 281258] 13:20:26.835880 <... futex resumed>) = 1
[pid 281256] 13:20:26.835939 epoll_pwait(3,  <unfinished ...>
[pid 281253] 13:20:26.836012 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281259] 13:20:26.836129 epoll_pwait(3,  <unfinished ...>
[pid 281258] 13:20:26.836211 epoll_pwait(3,  <unfinished ...>
[pid 281256] 13:20:26.836282 <... epoll_pwait resumed>[], 128, 0, NULL, 0) = 0
[pid 281259] 13:20:26.836374 <... epoll_pwait resumed>[], 128, 0, NULL, 0) = 0
[pid 281258] 13:20:26.836441 <... epoll_pwait resumed>[], 128, 0, NULL, 824634393512) = 0
[pid 281256] 13:20:26.836504 epoll_pwait(3,  <unfinished ...>
[pid 281253] 13:20:26.836574 <... nanosleep resumed>NULL) = 0
[pid 281259] 13:20:26.836654 futex(0xc00058e148, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 281258] 13:20:26.836729 write(5, "\0", 1 <unfinished ...>
[pid 281253] 13:20:26.836822 futex(0x40f0e58, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=99323153} <unfinished ...>
[pid 281258] 13:20:26.836922 <... write resumed>) = 1
[pid 281256] 13:20:26.836979 <... epoll_pwait resumed>[{EPOLLIN, {u32=68283432, u64=68283432}}], 128, 3151, NULL, 0) = 1
[pid 281258] 13:20:26.837081 futex(0xc000427648, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 281256] 13:20:26.837212 read(4, "\0", 16) = 1
[pid 281256] 13:20:26.837423 epoll_pwait(3, [], 128, 0, NULL, 68283432) = 0
[pid 281256] 13:20:26.837605 epoll_pwait(3, [], 128, 98, NULL, 0) = 0
[pid 281253] 13:20:26.936519 <... futex resumed>) = -1 ETIMEDOUT (Connection timed out)
[pid 281256] 13:20:26.936633 futex(0xc000427648, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 281253] 13:20:26.936710 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281258] 13:20:26.936835 <... futex resumed>) = 0
[pid 281256] 13:20:26.936922 <... futex resumed>) = 1
[pid 281258] 13:20:26.937021 epoll_pwait(3,  <unfinished ...>
[pid 281253] 13:20:26.937113 <... nanosleep resumed>NULL) = 0
[pid 281258] 13:20:26.937244 <... epoll_pwait resumed>[], 128, 0, NULL, 0) = 0
[pid 281256] 13:20:26.937315 epoll_pwait(3,  <unfinished ...>
[pid 281258] 13:20:26.937430 epoll_pwait(3,  <unfinished ...>
[pid 281253] 13:20:26.937502 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281256] 13:20:26.937586 <... epoll_pwait resumed>[], 128, 0, NULL, 824634393320) = 0
[pid 281256] 13:20:26.937728 write(5, "\0", 1 <unfinished ...>
[pid 281253] 13:20:26.937807 <... nanosleep resumed>NULL) = 0
[pid 281258] 13:20:26.937901 <... epoll_pwait resumed>[{EPOLLIN, {u32=68283432, u64=68283432}}], 128, 3050, NULL, 0) = 1
[pid 281256] 13:20:26.937973 <... write resumed>) = 1
[pid 281253] 13:20:26.938027 futex(0x40f0e58, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=99163353} <unfinished ...>
[pid 281258] 13:20:26.938119 read(4,  <unfinished ...>
[pid 281256] 13:20:26.938181 futex(0xc000100148, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 281258] 13:20:26.938255 <... read resumed>"\0", 16) = 1
[pid 281258] 13:20:26.938349 epoll_pwait(3, [], 128, 0, NULL, 68283432) = 0
[pid 281258] 13:20:26.938497 epoll_pwait(3, [], 128, 98, NULL, 0) = 0
[pid 281253] 13:20:27.037430 <... futex resumed>) = -1 ETIMEDOUT (Connection timed out)
[pid 281258] 13:20:27.037550 futex(0xc000100148, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 281253] 13:20:27.037639 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281258] 13:20:27.037773 <... futex resumed>) = 1
[pid 281256] 13:20:27.037843 <... futex resumed>) = 0
[pid 281253] 13:20:27.037934 <... nanosleep resumed>NULL) = 0
[pid 281258] 13:20:27.037996 epoll_pwait(3,  <unfinished ...>
[pid 281256] 13:20:27.038098 epoll_pwait(3,  <unfinished ...>
[pid 281253] 13:20:27.038179 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281258] 13:20:27.038272 <... epoll_pwait resumed>[], 128, 0, NULL, 824634393512) = 0
[pid 281256] 13:20:27.038356 <... epoll_pwait resumed>[], 128, 0, NULL, 0) = 0
[pid 281258] 13:20:27.038443 epoll_pwait(3,  <unfinished ...>
[pid 281253] 13:20:27.038512 <... nanosleep resumed>NULL) = 0
[pid 281256] 13:20:27.038571 futex(0xc000100148, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 281253] 13:20:27.038668 futex(0x40f0e58, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=99330453} <unfinished ...>
[pid 281258] 13:20:27.137760 <... epoll_pwait resumed>[], 128, 99, NULL, 824634393512) = 0
[pid 281258] 13:20:27.137815 epoll_pwait(3, [], 128, 0, NULL, 824634393512) = 0
[pid 281258] 13:20:27.137868 epoll_pwait(3,  <unfinished ...>
[pid 281253] 13:20:27.138193 <... futex resumed>) = -1 ETIMEDOUT (Connection timed out)
[pid 281253] 13:20:27.138237 futex(0xc000100148, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 281256] 13:20:27.138274 <... futex resumed>) = 0
[pid 281253] 13:20:27.138288 <... futex resumed>) = 1
[pid 281256] 13:20:27.138320 futex(0xc00058e148, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 281253] 13:20:27.138339 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281259] 13:20:27.138376 <... futex resumed>) = 0
[pid 281256] 13:20:27.138390 <... futex resumed>) = 1
[pid 281259] 13:20:27.138405 futex(0xc00058e148, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 281256] 13:20:27.138446 futex(0xc000100148, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 281253] 13:20:27.138463 <... nanosleep resumed>NULL) = 0
[pid 281253] 13:20:27.138539 futex(0x40f0e58, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=99947754} <unfinished ...>
[pid 281258] 13:20:27.138984 <... epoll_pwait resumed>[], 128, 1, NULL, 0) = 0
[pid 281258] 13:20:27.139021 epoll_pwait(3, [], 128, 0, NULL, 0) = 0
[pid 281258] 13:20:27.139071 epoll_pwait(3, [], 128, 99, NULL, 0) = 0
[pid 281258] 13:20:27.238359 epoll_pwait(3, [], 128, 0, NULL, 0) = 0
[pid 281258] 13:20:27.238526 epoll_pwait(3,  <unfinished ...>
[pid 281253] 13:20:27.238640 <... futex resumed>) = -1 ETIMEDOUT (Connection timed out)
[pid 281253] 13:20:27.238724 futex(0xc000100148, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 281256] 13:20:27.238871 <... futex resumed>) = 0
[pid 281253] 13:20:27.238954 <... futex resumed>) = 1
[pid 281256] 13:20:27.239035 futex(0xc00058e148, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 281253] 13:20:27.239107 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281259] 13:20:27.239210 <... futex resumed>) = 0
[pid 281256] 13:20:27.239261 <... futex resumed>) = 1
[pid 281259] 13:20:27.239323 nanosleep({tv_sec=0, tv_nsec=3000},  <unfinished ...>
[pid 281253] 13:20:27.239400 <... nanosleep resumed>NULL) = 0
[pid 281256] 13:20:27.239467 futex(0xc000100148, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 281259] 13:20:27.239545 <... nanosleep resumed>NULL) = 0
[pid 281253] 13:20:27.239595 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281259] 13:20:27.239686 futex(0xc00058e148, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 281258] 13:20:27.239745 <... epoll_pwait resumed>[], 128, 1, NULL, 0) = 0
[pid 281253] 13:20:27.239814 <... nanosleep resumed>NULL) = 0
[pid 281258] 13:20:27.239874 epoll_pwait(3,  <unfinished ...>
[pid 281253] 13:20:27.239952 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281258] 13:20:27.240022 <... epoll_pwait resumed>[], 128, 0, NULL, 0) = 0
[pid 281258] 13:20:27.240118 epoll_pwait(3,  <unfinished ...>
[pid 281253] 13:20:27.240177 <... nanosleep resumed>NULL) = 0
[pid 281253] 13:20:27.240269 futex(0x40f0e58, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=99104891} <unfinished ...>
[pid 281258] 13:20:27.339902 <... epoll_pwait resumed>[], 128, 99, NULL, 0) = 0
[pid 281253] 13:20:27.339987 <... futex resumed>) = -1 ETIMEDOUT (Connection timed out)
[pid 281258] 13:20:27.340071 epoll_pwait(3,  <unfinished ...>
[pid 281253] 13:20:27.340153 futex(0xc00058e148, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 281258] 13:20:27.340228 <... epoll_pwait resumed>[], 128, 0, NULL, 0) = 0
[pid 281259] 13:20:27.340301 <... futex resumed>) = 0
[pid 281253] 13:20:27.340352 <... futex resumed>) = 1
[pid 281259] 13:20:27.340417 epoll_pwait(3,  <unfinished ...>
[pid 281258] 13:20:27.340480 futex(0xc000100148, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 281253] 13:20:27.340609 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281259] 13:20:27.340730 <... epoll_pwait resumed>[], 128, 0, NULL, 0) = 0
[pid 281258] 13:20:27.340796 <... futex resumed>) = 1
[pid 281256] 13:20:27.340858 <... futex resumed>) = 0
[pid 281259] 13:20:27.340935 epoll_pwait(3,  <unfinished ...>
[pid 281258] 13:20:27.340997 write(5, "\0", 1 <unfinished ...>
[pid 281253] 13:20:27.341079 <... nanosleep resumed>NULL) = 0
[pid 281256] 13:20:27.341131 futex(0xc000100148, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 281259] 13:20:27.341216 <... epoll_pwait resumed>[{EPOLLIN, {u32=68283432, u64=68283432}}], 128, 2646, NULL, 0) = 1
[pid 281258] 13:20:27.341287 <... write resumed>) = 1
[pid 281253] 13:20:27.341339 getpid( <unfinished ...>
[pid 281259] 13:20:27.341422 read(4,  <unfinished ...>
[pid 281258] 13:20:27.341479 write(5, "\0", 1 <unfinished ...>
[pid 281253] 13:20:27.341557 <... getpid resumed>) = 281252
[pid 281259] 13:20:27.341627 <... read resumed>"\0", 16) = 1
[pid 281258] 13:20:27.341684 <... write resumed>) = 1
[pid 281253] 13:20:27.341734 tgkill(281252, 281258, SIGURG <unfinished ...>
[pid 281259] 13:20:27.341811 epoll_pwait(3,  <unfinished ...>
[pid 281258] 13:20:27.341872 futex(0xc000427648, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 281259] 13:20:27.341954 <... epoll_pwait resumed>[{EPOLLIN, {u32=68283432, u64=68283432}}], 128, 0, NULL, 68283432) = 1
[pid 281253] 13:20:27.342023 <... tgkill resumed>) = 0
[pid 281258] 13:20:27.342074 <... futex resumed>) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
[pid 281259] 13:20:27.342155 epoll_pwait(3,  <unfinished ...>
[pid 281258] 13:20:27.342210 --- SIGURG {si_signo=SIGURG, si_code=SI_TKILL, si_pid=281252, si_uid=0} ---
[pid 281253] 13:20:27.342268 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281259] 13:20:27.342353 <... epoll_pwait resumed>[{EPOLLIN, {u32=68283432, u64=68283432}}], 128, 99, NULL, 0) = 1
[pid 281258] 13:20:27.342434 rt_sigreturn({mask=[]} <unfinished ...>
[pid 281259] 13:20:27.342530 read(4,  <unfinished ...>
[pid 281258] 13:20:27.342591 <... rt_sigreturn resumed>) = 202
[pid 281253] 13:20:27.342641 <... nanosleep resumed>NULL) = 0
[pid 281259] 13:20:27.342713 <... read resumed>"\0", 16) = 1
[pid 281258] 13:20:27.342775 futex(0xc000427648, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 281253] 13:20:27.342838 futex(0x40f0e58, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=98182284} <unfinished ...>
[pid 281259] 13:20:27.342921 epoll_pwait(3, [], 128, 0, NULL, 68283432) = 0
[pid 281259] 13:20:27.343108 epoll_pwait(3, [], 128, 98, NULL, 0) = 0
[pid 281253] 13:20:27.441913 <... futex resumed>) = -1 ETIMEDOUT (Connection timed out)
[pid 281259] 13:20:27.442063 futex(0xc000427648, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 281253] 13:20:27.442199 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281259] 13:20:27.442345 <... futex resumed>) = 1
[pid 281258] 13:20:27.442424 <... futex resumed>) = 0
[pid 281259] 13:20:27.442526 epoll_pwait(3,  <unfinished ...>
[pid 281253] 13:20:27.442604 <... nanosleep resumed>NULL) = 0
[pid 281259] 13:20:27.442683 <... epoll_pwait resumed>[], 128, 0, NULL, 824634393512) = 0
[pid 281258] 13:20:27.442755 epoll_pwait(3,  <unfinished ...>
[pid 281259] 13:20:27.442850 epoll_pwait(3,  <unfinished ...>
[pid 281253] 13:20:27.442921 nanosleep({tv_sec=0, tv_nsec=20000},  <unfinished ...>
[pid 281258] 13:20:27.443014 <... epoll_pwait resumed>[], 128, 0, NULL, 0) = 0
[pid 281258] 13:20:27.443164 futex(0xc000427648, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 281253] 13:20:27.443243 <... nanosleep resumed>NULL) = 0
[pid 281253] 13:20:27.443356 futex(0x40f0e58, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=99149493}^C <unfinished ...>
[pid 281252] 13:20:27.478054 <... futex resumed>) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
strace: Process 281252 detached
strace: Process 281253 detached
strace: Process 281254 detached
strace: Process 281255 detached
strace: Process 281256 detached
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strace: Process 281270 detached