Hi, i always wondered why loading bytes into an already instantiated webview took so much time (~600ms) between the webkit_web_view_load_bytes() call and the first "change" event.
Today i noticed that doing it twice in a row (< one second) reduced that time for the second call from ~600ms to ~100ms. I straced it and got the small files attached. There is a "futex connection timed out" that would explain quite nicely the huge delay if the configured time out was 500ms. What can i do now to locate the culprit and get more info ? Regards, Jérémy.
write(1, "loading bytes http://localhost:3";..., 58loading bytes ) = 58 futex(0x7f4878000900, FUTEX_WAIT_PRIVATE, 2, NULL) = -1 EAGAIN (Resource temporarily unavailable) write(33, "\1\0\0\0\0\0\0\0", 8) = 8 futex(0x7f4878000900, FUTEX_WAKE_PRIVATE, 1) = 1 write(20, "\1\0\0\0\0\0\0\0", 8) = 8 recvmsg(19, 0x7ffe46890430, 0) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=19, events=POLLIN}, {fd=20, events=POLLIN}, {fd=21, events=POLLIN}], 3, 0) = 1 ([{fd=20, revents=POLLIN}]) recvmsg(19, 0x7ffe46890430, 0) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=19, events=POLLIN}, {fd=20, events=POLLIN}, {fd=21, events=POLLIN}], 3, 0) = 1 ([{fd=20, revents=POLLIN}]) read(20, "\1\0\0\0\0\0\0\0", 16) = 8 read(20, 0x7ffe468905e0, 16) = -1 EAGAIN (Resource temporarily unavailable) read(20, 0x7ffe468905e0, 16) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=19, events=POLLIN}, {fd=20, events=POLLIN}, {fd=21, events=POLLIN}], 3, 0) = 0 (Timeout) read(20, 0x7ffe468905e0, 16) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=19, events=POLLIN}, {fd=20, events=POLLIN}, {fd=21, events=POLLIN}], 3, 0) = 0 (Timeout) poll([{fd=19, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=19, revents=POLLOUT}]) writev(19, [{"5 \4\0.\0`\0\t\0`\0\0\4\0\3\213\4\6\0/\0`\0.\0`\0&\0\0\0"..., 172}, {NULL, 0}, {"", 0}], 3) = 172 recvmsg(19, 0x7ffe46890430, 0) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=19, events=POLLIN}, {fd=20, events=POLLIN}, {fd=21, events=POLLIN}], 3, 0) = 0 (Timeout) epoll_wait(5, [], 1024, 4) = 0 recvmsg(19, 0x7ffe46890430, 0) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=19, events=POLLIN}, {fd=20, events=POLLIN}, {fd=21, events=POLLIN}], 3, 0) = 1 ([{fd=20, revents=POLLIN}]) recvmsg(19, 0x7ffe46890430, 0) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=19, events=POLLIN}, {fd=20, events=POLLIN}, {fd=21, events=POLLIN}], 3, 0) = 1 ([{fd=20, revents=POLLIN}]) read(20, "\1\0\0\0\0\0\0\0", 16) = 8 write(20, "\1\0\0\0\0\0\0\0", 8) = 8 write(33, "\1\0\0\0\0\0\0\0", 8) = 8 futex(0x7f4878000900, FUTEX_WAKE_PRIVATE, 1) = 1 recvmsg(19, 0x7ffe46890430, 0) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=19, events=POLLIN}, {fd=20, events=POLLIN}, {fd=21, events=POLLIN}], 3, 0) = 1 ([{fd=20, revents=POLLIN}]) read(20, "\7\0\0\0\0\0\0\0", 16) = 8 recvmsg(19, 0x7ffe46890430, 0) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=19, events=POLLIN}, {fd=20, events=POLLIN}, {fd=21, events=POLLIN}], 3, 0) = 0 (Timeout) read(20, 0x7ffe468905e0, 16) = -1 EAGAIN (Resource temporarily unavailable) write(20, "\1\0\0\0\0\0\0\0", 8) = 8 write(1, "change 0 1 http://localhost:3000";..., 99change event 0 1 ) = 99
write(1, "loading bytes http://localhost:3";..., 58loading bytes ) = 58 madvise(0x7f48e5f54000, 4096, MADV_NORMAL) = 0 write(33, "\1\0\0\0\0\0\0\0", 8) = 8 write(20, "\1\0\0\0\0\0\0\0", 8) = 8 recvmsg(19, 0x7ffe46890430, 0) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=19, events=POLLIN}, {fd=20, events=POLLIN}, {fd=21, events=POLLIN}], 3, 0) = 1 ([{fd=20, revents=POLLIN}]) recvmsg(19, 0x7ffe46890430, 0) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=19, events=POLLIN}, {fd=20, events=POLLIN}, {fd=21, events=POLLIN}], 3, 0) = 1 ([{fd=20, revents=POLLIN}]) read(20, "\1\0\0\0\0\0\0\0", 16) = 8 write(33, "\1\0\0\0\0\0\0\0", 8) = 8 futex(0x7f4878000900, FUTEX_WAKE_PRIVATE, 1) = 1 futex(0x7f48e5ff3114, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 13, {1464945462, 621346433}, ffffffff) = -1 ETIMEDOUT (Connection timed out) futex(0x7f48e5ff30e8, FUTEX_WAKE_PRIVATE, 1) = 0 read(20, "\1\0\0\0\0\0\0\0", 16) = 8 read(20, 0x7ffe468905e0, 16) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=19, events=POLLIN}, {fd=20, events=POLLIN}, {fd=21, events=POLLIN}], 3, 0) = 0 (Timeout) read(20, 0x7ffe468905e0, 16) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=19, events=POLLIN}, {fd=20, events=POLLIN}, {fd=21, events=POLLIN}], 3, 0) = 0 (Timeout) write(20, "\1\0\0\0\0\0\0\0", 8) = 8 write(33, "\1\0\0\0\0\0\0\0", 8) = 8 poll([{fd=19, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=19, revents=POLLOUT}]) writev(19, [{"5 \4\0!\0`\0\t\0`\0\0\4\0\3\213\4\6\0\"\0`\0!\0`\0&\0\0\0"..., 112}, {NULL, 0}, {"", 0}], 3) = 112 recvmsg(19, 0x7ffe46890430, 0) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=19, events=POLLIN}, {fd=20, events=POLLIN}, {fd=21, events=POLLIN}], 3, 0) = 1 ([{fd=20, revents=POLLIN}]) recvmsg(19, 0x7ffe46890430, 0) = -1 EAGAIN (Resource temporarily unavailable) poll([{fd=19, events=POLLIN}, {fd=20, events=POLLIN}, {fd=21, events=POLLIN}], 3, 0) = 1 ([{fd=20, revents=POLLIN}]) read(20, "\7\0\0\0\0\0\0\0", 16) = 8 write(20, "\1\0\0\0\0\0\0\0", 8) = 8 write(1, "change 0 1 http://localhost:3000";..., 99change event 0 1 ) = 99
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