Я испытываю высокую задержку Wi-Fi каждую секунду на моем Macbook Pro, на котором установлена последняя версия MacOS Sierra.
Я думал, что мой старый роутер может быть виновником, поэтому я купил новый. Однако новый маршрутизатор только усугубил ситуацию: от проблем с задержкой до потери пакетов около 20%. Попытка использовать это решение из другого вопроса о суперпользователе, по крайней мере, снова уменьшила потерю пакетов до 0, но проблема с задержкой остается.
- Пинг одного и того же маршрутизатора с другого компьютера через проводную сеть приводит к устойчивому пингу 2 мс.
- Пинг с моего телефона по Wi-Fi приводит к устойчивому пингу 4 мс (старый телефон Android).
- Выполнение тех же тестов в моей сети на работе дает точно такие же результаты. Я выделил Wi-Fi моего Macbook Pro в качестве проблемы.
Вот диаграмма из speedtest.net. Каждый раз, когда я запускаю этот тест по Wi-Fi, я получаю примерно один и тот же результат: падение скорости загрузки ~ 5 секунд.
При пинге моего маршрутизатора на 192.168.1.1 от моего MBP (по умолчанию 1 Гц) я получаю следующую схему:
64 bytes from 192.168.1.1: icmp_seq=0 ttl=64 time=86.944 ms
64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=121.099 ms
64 bytes from 192.168.1.1: icmp_seq=2 ttl=64 time=1.664 ms
64 bytes from 192.168.1.1: icmp_seq=3 ttl=64 time=31.493 ms
64 bytes from 192.168.1.1: icmp_seq=4 ttl=64 time=66.042 ms
64 bytes from 192.168.1.1: icmp_seq=5 ttl=64 time=99.786 ms
64 bytes from 192.168.1.1: icmp_seq=6 ttl=64 time=2.459 ms
64 bytes from 192.168.1.1: icmp_seq=7 ttl=64 time=2.183 ms
64 bytes from 192.168.1.1: icmp_seq=8 ttl=64 time=1.867 ms
64 bytes from 192.168.1.1: icmp_seq=9 ttl=64 time=2.662 ms
64 bytes from 192.168.1.1: icmp_seq=10 ttl=64 time=2.065 ms
64 bytes from 192.168.1.1: icmp_seq=11 ttl=64 time=0.877 ms
64 bytes from 192.168.1.1: icmp_seq=12 ttl=64 time=63.238 ms
64 bytes from 192.168.1.1: icmp_seq=13 ttl=64 time=101.419 ms
64 bytes from 192.168.1.1: icmp_seq=14 ttl=64 time=3.704 ms
64 bytes from 192.168.1.1: icmp_seq=15 ttl=64 time=36.746 ms
64 bytes from 192.168.1.1: icmp_seq=16 ttl=64 time=51.972 ms
64 bytes from 192.168.1.1: icmp_seq=17 ttl=64 time=86.453 ms
64 bytes from 192.168.1.1: icmp_seq=18 ttl=64 time=125.786 ms
64 bytes from 192.168.1.1: icmp_seq=19 ttl=64 time=1.113 ms
64 bytes from 192.168.1.1: icmp_seq=20 ttl=64 time=1.973 ms
64 bytes from 192.168.1.1: icmp_seq=21 ttl=64 time=2.575 ms
64 bytes from 192.168.1.1: icmp_seq=22 ttl=64 time=1.957 ms
64 bytes from 192.168.1.1: icmp_seq=23 ttl=64 time=2.209 ms
64 bytes from 192.168.1.1: icmp_seq=24 ttl=64 time=2.815 ms
64 bytes from 192.168.1.1: icmp_seq=25 ttl=64 time=1.924 ms
64 bytes from 192.168.1.1: icmp_seq=26 ttl=64 time=150.076 ms
64 bytes from 192.168.1.1: icmp_seq=27 ttl=64 time=53.943 ms
64 bytes from 192.168.1.1: icmp_seq=28 ttl=64 time=84.633 ms
64 bytes from 192.168.1.1: icmp_seq=29 ttl=64 time=109.776 ms
Пинг с частотой 10 Гц приводит к аналогичной схеме с потерей пакетов:
64 bytes from 192.168.1.1: icmp_seq=11 ttl=64 time=1.078 ms
64 bytes from 192.168.1.1: icmp_seq=12 ttl=64 time=1.347 ms
64 bytes from 192.168.1.1: icmp_seq=13 ttl=64 time=1.041 ms
64 bytes from 192.168.1.1: icmp_seq=14 ttl=64 time=1.031 ms
64 bytes from 192.168.1.1: icmp_seq=15 ttl=64 time=1.098 ms
64 bytes from 192.168.1.1: icmp_seq=16 ttl=64 time=1.098 ms
64 bytes from 192.168.1.1: icmp_seq=17 ttl=64 time=0.944 ms
64 bytes from 192.168.1.1: icmp_seq=18 ttl=64 time=3.185 ms
64 bytes from 192.168.1.1: icmp_seq=19 ttl=64 time=8.736 ms
64 bytes from 192.168.1.1: icmp_seq=20 ttl=64 time=6.846 ms
64 bytes from 192.168.1.1: icmp_seq=21 ttl=64 time=1.009 ms
64 bytes from 192.168.1.1: icmp_seq=22 ttl=64 time=0.900 ms
64 bytes from 192.168.1.1: icmp_seq=23 ttl=64 time=0.985 ms
64 bytes from 192.168.1.1: icmp_seq=24 ttl=64 time=0.898 ms
64 bytes from 192.168.1.1: icmp_seq=25 ttl=64 time=0.919 ms
64 bytes from 192.168.1.1: icmp_seq=26 ttl=64 time=3.679 ms
64 bytes from 192.168.1.1: icmp_seq=27 ttl=64 time=1.468 ms
64 bytes from 192.168.1.1: icmp_seq=28 ttl=64 time=6.889 ms
64 bytes from 192.168.1.1: icmp_seq=29 ttl=64 time=0.953 ms
64 bytes from 192.168.1.1: icmp_seq=30 ttl=64 time=1.076 ms
64 bytes from 192.168.1.1: icmp_seq=31 ttl=64 time=0.984 ms
64 bytes from 192.168.1.1: icmp_seq=32 ttl=64 time=0.946 ms
64 bytes from 192.168.1.1: icmp_seq=33 ttl=64 time=0.872 ms
64 bytes from 192.168.1.1: icmp_seq=34 ttl=64 time=0.844 ms
Request timeout for icmp_seq 35
64 bytes from 192.168.1.1: icmp_seq=35 ttl=64 time=169.385 ms
64 bytes from 192.168.1.1: icmp_seq=36 ttl=64 time=68.897 ms
64 bytes from 192.168.1.1: icmp_seq=37 ttl=64 time=203.066 ms
64 bytes from 192.168.1.1: icmp_seq=38 ttl=64 time=98.576 ms
64 bytes from 192.168.1.1: icmp_seq=39 ttl=64 time=0.891 ms
64 bytes from 192.168.1.1: icmp_seq=40 ttl=64 time=122.991 ms
64 bytes from 192.168.1.1: icmp_seq=41 ttl=64 time=18.420 ms
64 bytes from 192.168.1.1: icmp_seq=42 ttl=64 time=90.086 ms
64 bytes from 192.168.1.1: icmp_seq=43 ttl=64 time=1.029 ms
64 bytes from 192.168.1.1: icmp_seq=44 ttl=64 time=65.268 ms
64 bytes from 192.168.1.1: icmp_seq=45 ttl=64 time=92.355 ms
64 bytes from 192.168.1.1: icmp_seq=46 ttl=64 time=0.922 ms
64 bytes from 192.168.1.1: icmp_seq=47 ttl=64 time=66.303 ms
64 bytes from 192.168.1.1: icmp_seq=49 ttl=64 time=38.938 ms
Request timeout for icmp_seq 50
64 bytes from 192.168.1.1: icmp_seq=50 ttl=64 time=129.508 ms
64 bytes from 192.168.1.1: icmp_seq=51 ttl=64 time=24.909 ms
64 bytes from 192.168.1.1: icmp_seq=52 ttl=64 time=86.077 ms
64 bytes from 192.168.1.1: icmp_seq=53 ttl=64 time=0.967 ms
64 bytes from 192.168.1.1: icmp_seq=54 ttl=64 time=198.241 ms
64 bytes from 192.168.1.1: icmp_seq=55 ttl=64 time=93.977 ms
64 bytes from 192.168.1.1: icmp_seq=56 ttl=64 time=0.886 ms
64 bytes from 192.168.1.1: icmp_seq=57 ttl=64 time=70.865 ms
64 bytes from 192.168.1.1: icmp_seq=58 ttl=64 time=0.809 ms
64 bytes from 192.168.1.1: icmp_seq=59 ttl=64 time=41.784 ms
Request timeout for icmp_seq 61
64 bytes from 192.168.1.1: icmp_seq=62 ttl=64 time=90.258 ms
64 bytes from 192.168.1.1: icmp_seq=63 ttl=64 time=1.207 ms
64 bytes from 192.168.1.1: icmp_seq=64 ttl=64 time=56.740 ms
64 bytes from 192.168.1.1: icmp_seq=65 ttl=64 time=85.553 ms
64 bytes from 192.168.1.1: icmp_seq=66 ttl=64 time=0.877 ms
64 bytes from 192.168.1.1: icmp_seq=67 ttl=64 time=62.510 ms
64 bytes from 192.168.1.1: icmp_seq=68 ttl=64 time=1.423 ms
64 bytes from 192.168.1.1: icmp_seq=69 ttl=64 time=32.156 ms
Request timeout for icmp_seq 70
64 bytes from 192.168.1.1: icmp_seq=70 ttl=64 time=116.203 ms
64 bytes from 192.168.1.1: icmp_seq=71 ttl=64 time=12.917 ms
64 bytes from 192.168.1.1: icmp_seq=72 ttl=64 time=86.092 ms
64 bytes from 192.168.1.1: icmp_seq=73 ttl=64 time=0.886 ms
64 bytes from 192.168.1.1: icmp_seq=74 ttl=64 time=59.710 ms
64 bytes from 192.168.1.1: icmp_seq=75 ttl=64 time=90.512 ms
64 bytes from 192.168.1.1: icmp_seq=76 ttl=64 time=4.074 ms
64 bytes from 192.168.1.1: icmp_seq=77 ttl=64 time=111.984 ms
64 bytes from 192.168.1.1: icmp_seq=78 ttl=64 time=8.640 ms
64 bytes from 192.168.1.1: icmp_seq=79 ttl=64 time=152.531 ms
64 bytes from 192.168.1.1: icmp_seq=80 ttl=64 time=47.904 ms
64 bytes from 192.168.1.1: icmp_seq=81 ttl=64 time=0.907 ms
64 bytes from 192.168.1.1: icmp_seq=82 ttl=64 time=75.134 ms
64 bytes from 192.168.1.1: icmp_seq=83 ttl=64 time=1.012 ms
64 bytes from 192.168.1.1: icmp_seq=84 ttl=64 time=42.029 ms
64 bytes from 192.168.1.1: icmp_seq=85 ttl=64 time=116.824 ms
64 bytes from 192.168.1.1: icmp_seq=86 ttl=64 time=14.382 ms
64 bytes from 192.168.1.1: icmp_seq=87 ttl=64 time=49.502 ms
64 bytes from 192.168.1.1: icmp_seq=88 ttl=64 time=121.049 ms
64 bytes from 192.168.1.1: icmp_seq=89 ttl=64 time=21.011 ms
64 bytes from 192.168.1.1: icmp_seq=90 ttl=64 time=95.133 ms
64 bytes from 192.168.1.1: icmp_seq=91 ttl=64 time=1.043 ms
64 bytes from 192.168.1.1: icmp_seq=92 ttl=64 time=67.754 ms
64 bytes from 192.168.1.1: icmp_seq=93 ttl=64 time=0.876 ms
64 bytes from 192.168.1.1: icmp_seq=94 ttl=64 time=39.027 ms
64 bytes from 192.168.1.1: icmp_seq=95 ttl=64 time=110.931 ms
64 bytes from 192.168.1.1: icmp_seq=96 ttl=64 time=7.023 ms
64 bytes from 192.168.1.1: icmp_seq=97 ttl=64 time=36.249 ms
64 bytes from 192.168.1.1: icmp_seq=98 ttl=64 time=116.108 ms
64 bytes from 192.168.1.1: icmp_seq=99 ttl=64 time=11.732 ms
64 bytes from 192.168.1.1: icmp_seq=100 ttl=64 time=82.880 ms
64 bytes from 192.168.1.1: icmp_seq=101 ttl=64 time=0.956 ms
64 bytes from 192.168.1.1: icmp_seq=102 ttl=64 time=58.007 ms
64 bytes from 192.168.1.1: icmp_seq=103 ttl=64 time=126.818 ms
64 bytes from 192.168.1.1: icmp_seq=104 ttl=64 time=22.750 ms
64 bytes from 192.168.1.1: icmp_seq=105 ttl=64 time=99.126 ms
64 bytes from 192.168.1.1: icmp_seq=106 ttl=64 time=131.419 ms
64 bytes from 192.168.1.1: icmp_seq=107 ttl=64 time=28.596 ms
64 bytes from 192.168.1.1: icmp_seq=108 ttl=64 time=110.326 ms
64 bytes from 192.168.1.1: icmp_seq=109 ttl=64 time=5.859 ms
64 bytes from 192.168.1.1: icmp_seq=110 ttl=64 time=70.852 ms
64 bytes from 192.168.1.1: icmp_seq=111 ttl=64 time=0.855 ms
64 bytes from 192.168.1.1: icmp_seq=112 ttl=64 time=41.162 ms
64 bytes from 192.168.1.1: icmp_seq=113 ttl=64 time=114.014 ms
64 bytes from 192.168.1.1: icmp_seq=114 ttl=64 time=9.519 ms
Request timeout for icmp_seq 116
64 bytes from 192.168.1.1: icmp_seq=116 ttl=64 time=121.307 ms
64 bytes from 192.168.1.1: icmp_seq=117 ttl=64 time=16.106 ms
64 bytes from 192.168.1.1: icmp_seq=118 ttl=64 time=1.082 ms
64 bytes from 192.168.1.1: icmp_seq=119 ttl=64 time=1.086 ms
64 bytes from 192.168.1.1: icmp_seq=120 ttl=64 time=1.386 ms
64 bytes from 192.168.1.1: icmp_seq=121 ttl=64 time=1.002 ms
64 bytes from 192.168.1.1: icmp_seq=122 ttl=64 time=5.472 ms
64 bytes from 192.168.1.1: icmp_seq=123 ttl=64 time=1.060 ms
64 bytes from 192.168.1.1: icmp_seq=124 ttl=64 time=1.526 ms
64 bytes from 192.168.1.1: icmp_seq=125 ttl=64 time=0.998 ms
64 bytes from 192.168.1.1: icmp_seq=126 ttl=64 time=1.182 ms
64 bytes from 192.168.1.1: icmp_seq=127 ttl=64 time=0.942 ms
64 bytes from 192.168.1.1: icmp_seq=128 ttl=64 time=3.221 ms
64 bytes from 192.168.1.1: icmp_seq=129 ttl=64 time=16.895 ms
64 bytes from 192.168.1.1: icmp_seq=130 ttl=64 time=1.251 ms
64 bytes from 192.168.1.1: icmp_seq=131 ttl=64 time=3.832 ms
64 bytes from 192.168.1.1: icmp_seq=132 ttl=64 time=5.403 ms
64 bytes from 192.168.1.1: icmp_seq=133 ttl=64 time=1.194 ms
64 bytes from 192.168.1.1: icmp_seq=134 ttl=64 time=1.287 ms
64 bytes from 192.168.1.1: icmp_seq=135 ttl=64 time=2.274 ms
64 bytes from 192.168.1.1: icmp_seq=136 ttl=64 time=0.863 ms
64 bytes from 192.168.1.1: icmp_seq=138 ttl=64 time=1.200 ms
Словами: ~ 5 секунд обычного пинга, затем ~ 5 секунд серьезных проблем с задержкой или даже таймаутов, если частота пинга достаточно высока.
Я попытался выяснить, может ли это быть вызвано недавней установкой приложения, поэтому я уже отключил большинство приложений (Dropbox, Little Snitch). Хотя сейчас у меня заканчиваются варианты. Я только что запустил Wireshark во время пинга и вообще не вижу сетевой активности, кроме этих пингов.
Я не уверен, что еще я могу попытаться выяснить это.