ngx_http_lua_socket_tcp_send.stp

global counter;

probe process("/usr/local/openresty/nginx/sbin/nginx").function("ngx_http_lua_socket_tcp_send").return
{
        x = gettimeofday_us() - @entry(gettimeofday_us());
        counter <<< x;
}

probe timer.s(1)
{
        if (@count(counter)) {
                printf("min: %d, max: %d, avg: %d, count: %d\n", @min(counter), @max(counter), @avg(counter), @count(counter));
                delete counter;
        }
}