Я испытывал некоторые всплески задержки с моим интернетом в течение дня. После того, как пришел провайдер и подтвердил, что проблем с их стороны нет, я попытался пропинговать свой маршрутизатор (Airport Express). Это то, что я видел (журнал опубликован ниже, недостаточно репы, чтобы показать мой график).
Каким-то образом время пинга до моего маршрутизатора (всего в 5 футах) создавало пилообразную волну. Выполнение заводских настроек не решило проблему, и в конечном итоге технология Apple просто заменила устройство. Проблема исчезла, но теперь мне действительно интересно, что могло бы произойти. Кто-нибудь видел такое поведение раньше? Вот полный журнал ping для справки:
(РЕДАКТИРОВАТЬ: я считаю, что это не связано с проблемами "раздувания буфера", которые имеют аналогичные симптомы. Я могу воспроизвести проблему, когда маршрутизатор не подключен к Интернету. Я твердо верю, что это не повторяющийся вопрос, поскольку он не связан с моим провайдером, который является ядром ответа в связанном вопросе.)
PING 10.0.1.1 (10.0.1.1): 56 data bytes
64 bytes from 10.0.1.1: icmp_seq=0 ttl=255 time=73.326 ms
64 bytes from 10.0.1.1: icmp_seq=1 ttl=255 time=120.442 ms
64 bytes from 10.0.1.1: icmp_seq=2 ttl=255 time=168.057 ms
64 bytes from 10.0.1.1: icmp_seq=3 ttl=255 time=211.952 ms
64 bytes from 10.0.1.1: icmp_seq=4 ttl=255 time=1.071 ms
64 bytes from 10.0.1.1: icmp_seq=5 ttl=255 time=1.102 ms
64 bytes from 10.0.1.1: icmp_seq=6 ttl=255 time=1.133 ms
64 bytes from 10.0.1.1: icmp_seq=7 ttl=255 time=1.098 ms
64 bytes from 10.0.1.1: icmp_seq=8 ttl=255 time=1.202 ms
64 bytes from 10.0.1.1: icmp_seq=9 ttl=255 time=3.075 ms
64 bytes from 10.0.1.1: icmp_seq=10 ttl=255 time=4.314 ms
64 bytes from 10.0.1.1: icmp_seq=11 ttl=255 time=52.340 ms
64 bytes from 10.0.1.1: icmp_seq=12 ttl=255 time=98.328 ms
64 bytes from 10.0.1.1: icmp_seq=13 ttl=255 time=145.725 ms
64 bytes from 10.0.1.1: icmp_seq=14 ttl=255 time=192.306 ms
64 bytes from 10.0.1.1: icmp_seq=15 ttl=255 time=1.322 ms
64 bytes from 10.0.1.1: icmp_seq=16 ttl=255 time=1.158 ms
64 bytes from 10.0.1.1: icmp_seq=17 ttl=255 time=1.131 ms
64 bytes from 10.0.1.1: icmp_seq=18 ttl=255 time=18.096 ms
64 bytes from 10.0.1.1: icmp_seq=19 ttl=255 time=1.130 ms
64 bytes from 10.0.1.1: icmp_seq=20 ttl=255 time=1.040 ms
64 bytes from 10.0.1.1: icmp_seq=21 ttl=255 time=1.136 ms
64 bytes from 10.0.1.1: icmp_seq=22 ttl=255 time=33.145 ms
64 bytes from 10.0.1.1: icmp_seq=23 ttl=255 time=80.273 ms
64 bytes from 10.0.1.1: icmp_seq=24 ttl=255 time=126.750 ms
64 bytes from 10.0.1.1: icmp_seq=25 ttl=255 time=171.643 ms
64 bytes from 10.0.1.1: icmp_seq=26 ttl=255 time=215.126 ms
64 bytes from 10.0.1.1: icmp_seq=27 ttl=255 time=1.140 ms
64 bytes from 10.0.1.1: icmp_seq=28 ttl=255 time=1.239 ms
64 bytes from 10.0.1.1: icmp_seq=29 ttl=255 time=1.178 ms
64 bytes from 10.0.1.1: icmp_seq=30 ttl=255 time=1.090 ms
64 bytes from 10.0.1.1: icmp_seq=31 ttl=255 time=1.160 ms
64 bytes from 10.0.1.1: icmp_seq=32 ttl=255 time=1.333 ms
64 bytes from 10.0.1.1: icmp_seq=33 ttl=255 time=10.550 ms
64 bytes from 10.0.1.1: icmp_seq=34 ttl=255 time=55.832 ms
64 bytes from 10.0.1.1: icmp_seq=35 ttl=255 time=101.375 ms
64 bytes from 10.0.1.1: icmp_seq=36 ttl=255 time=147.032 ms
64 bytes from 10.0.1.1: icmp_seq=37 ttl=255 time=193.163 ms
64 bytes from 10.0.1.1: icmp_seq=38 ttl=255 time=1.137 ms
64 bytes from 10.0.1.1: icmp_seq=39 ttl=255 time=1.109 ms
64 bytes from 10.0.1.1: icmp_seq=40 ttl=255 time=1.045 ms
64 bytes from 10.0.1.1: icmp_seq=41 ttl=255 time=1.133 ms
64 bytes from 10.0.1.1: icmp_seq=42 ttl=255 time=6.681 ms
64 bytes from 10.0.1.1: icmp_seq=43 ttl=255 time=19.093 ms
64 bytes from 10.0.1.1: icmp_seq=44 ttl=255 time=1.132 ms
64 bytes from 10.0.1.1: icmp_seq=45 ttl=255 time=52.848 ms
64 bytes from 10.0.1.1: icmp_seq=46 ttl=255 time=83.774 ms
64 bytes from 10.0.1.1: icmp_seq=47 ttl=255 time=127.273 ms
64 bytes from 10.0.1.1: icmp_seq=48 ttl=255 time=171.757 ms
64 bytes from 10.0.1.1: icmp_seq=49 ttl=255 time=219.219 ms
64 bytes from 10.0.1.1: icmp_seq=50 ttl=255 time=1.133 ms
64 bytes from 10.0.1.1: icmp_seq=51 ttl=255 time=17.985 ms
64 bytes from 10.0.1.1: icmp_seq=52 ttl=255 time=1.167 ms
64 bytes from 10.0.1.1: icmp_seq=53 ttl=255 time=1.799 ms
64 bytes from 10.0.1.1: icmp_seq=54 ttl=255 time=1.145 ms
64 bytes from 10.0.1.1: icmp_seq=55 ttl=255 time=1.201 ms
64 bytes from 10.0.1.1: icmp_seq=56 ttl=255 time=9.702 ms
64 bytes from 10.0.1.1: icmp_seq=57 ttl=255 time=60.177 ms
64 bytes from 10.0.1.1: icmp_seq=58 ttl=255 time=104.721 ms
64 bytes from 10.0.1.1: icmp_seq=59 ttl=255 time=151.101 ms
64 bytes from 10.0.1.1: icmp_seq=60 ttl=255 time=194.599 ms
64 bytes from 10.0.1.1: icmp_seq=61 ttl=255 time=1.097 ms
64 bytes from 10.0.1.1: icmp_seq=62 ttl=255 time=1.222 ms
64 bytes from 10.0.1.1: icmp_seq=63 ttl=255 time=1.008 ms
64 bytes from 10.0.1.1: icmp_seq=64 ttl=255 time=1.032 ms
64 bytes from 10.0.1.1: icmp_seq=65 ttl=255 time=1.127 ms
64 bytes from 10.0.1.1: icmp_seq=66 ttl=255 time=1.111 ms
64 bytes from 10.0.1.1: icmp_seq=67 ttl=255 time=13.147 ms
64 bytes from 10.0.1.1: icmp_seq=68 ttl=255 time=43.988 ms
64 bytes from 10.0.1.1: icmp_seq=69 ttl=255 time=90.388 ms
64 bytes from 10.0.1.1: icmp_seq=70 ttl=255 time=137.661 ms
64 bytes from 10.0.1.1: icmp_seq=71 ttl=255 time=183.365 ms
64 bytes from 10.0.1.1: icmp_seq=72 ttl=255 time=1.202 ms
64 bytes from 10.0.1.1: icmp_seq=73 ttl=255 time=1.119 ms
64 bytes from 10.0.1.1: icmp_seq=74 ttl=255 time=1.107 ms
64 bytes from 10.0.1.1: icmp_seq=75 ttl=255 time=28.675 ms
64 bytes from 10.0.1.1: icmp_seq=76 ttl=255 time=1.235 ms
64 bytes from 10.0.1.1: icmp_seq=77 ttl=255 time=1.892 ms
64 bytes from 10.0.1.1: icmp_seq=78 ttl=255 time=1.521 ms
64 bytes from 10.0.1.1: icmp_seq=79 ttl=255 time=26.785 ms
64 bytes from 10.0.1.1: icmp_seq=80 ttl=255 time=73.599 ms
64 bytes from 10.0.1.1: icmp_seq=81 ttl=255 time=119.051 ms
64 bytes from 10.0.1.1: icmp_seq=82 ttl=255 time=166.061 ms
64 bytes from 10.0.1.1: icmp_seq=83 ttl=255 time=211.415 ms
64 bytes from 10.0.1.1: icmp_seq=84 ttl=255 time=1.131 ms
64 bytes from 10.0.1.1: icmp_seq=85 ttl=255 time=1.164 ms
64 bytes from 10.0.1.1: icmp_seq=86 ttl=255 time=1.118 ms
64 bytes from 10.0.1.1: icmp_seq=87 ttl=255 time=1.173 ms
64 bytes from 10.0.1.1: icmp_seq=88 ttl=255 time=1.043 ms
64 bytes from 10.0.1.1: icmp_seq=89 ttl=255 time=1.080 ms
64 bytes from 10.0.1.1: icmp_seq=90 ttl=255 time=8.285 ms
64 bytes from 10.0.1.1: icmp_seq=91 ttl=255 time=52.001 ms
64 bytes from 10.0.1.1: icmp_seq=92 ttl=255 time=100.054 ms
64 bytes from 10.0.1.1: icmp_seq=93 ttl=255 time=146.326 ms
64 bytes from 10.0.1.1: icmp_seq=94 ttl=255 time=194.628 ms
64 bytes from 10.0.1.1: icmp_seq=95 ttl=255 time=1.099 ms
64 bytes from 10.0.1.1: icmp_seq=96 ttl=255 time=1.136 ms
64 bytes from 10.0.1.1: icmp_seq=97 ttl=255 time=1.529 ms
64 bytes from 10.0.1.1: icmp_seq=98 ttl=255 time=1.304 ms
64 bytes from 10.0.1.1: icmp_seq=99 ttl=255 time=10.176 ms
64 bytes from 10.0.1.1: icmp_seq=100 ttl=255 time=1.356 ms
64 bytes from 10.0.1.1: icmp_seq=101 ttl=255 time=1.032 ms
64 bytes from 10.0.1.1: icmp_seq=102 ttl=255 time=45.241 ms
64 bytes from 10.0.1.1: icmp_seq=103 ttl=255 time=95.921 ms
64 bytes from 10.0.1.1: icmp_seq=104 ttl=255 time=140.944 ms
64 bytes from 10.0.1.1: icmp_seq=105 ttl=255 time=206.081 ms
64 bytes from 10.0.1.1: icmp_seq=106 ttl=255 time=1.162 ms
64 bytes from 10.0.1.1: icmp_seq=107 ttl=255 time=4.226 ms
64 bytes from 10.0.1.1: icmp_seq=108 ttl=255 time=20.158 ms
64 bytes from 10.0.1.1: icmp_seq=109 ttl=255 time=1.094 ms
64 bytes from 10.0.1.1: icmp_seq=110 ttl=255 time=1.198 ms
64 bytes from 10.0.1.1: icmp_seq=111 ttl=255 time=4.516 ms
64 bytes from 10.0.1.1: icmp_seq=112 ttl=255 time=1.269 ms
64 bytes from 10.0.1.1: icmp_seq=113 ttl=255 time=35.106 ms
64 bytes from 10.0.1.1: icmp_seq=114 ttl=255 time=83.162 ms
64 bytes from 10.0.1.1: icmp_seq=115 ttl=255 time=124.009 ms
64 bytes from 10.0.1.1: icmp_seq=116 ttl=255 time=174.926 ms
64 bytes from 10.0.1.1: icmp_seq=117 ttl=255 time=215.831 ms
64 bytes from 10.0.1.1: icmp_seq=118 ttl=255 time=1.164 ms
64 bytes from 10.0.1.1: icmp_seq=119 ttl=255 time=1.560 ms
64 bytes from 10.0.1.1: icmp_seq=120 ttl=255 time=1.119 ms
64 bytes from 10.0.1.1: icmp_seq=121 ttl=255 time=1.353 ms
64 bytes from 10.0.1.1: icmp_seq=122 ttl=255 time=1.086 ms
64 bytes from 10.0.1.1: icmp_seq=123 ttl=255 time=1.088 ms
64 bytes from 10.0.1.1: icmp_seq=124 ttl=255 time=10.519 ms
64 bytes from 10.0.1.1: icmp_seq=125 ttl=255 time=58.219 ms
64 bytes from 10.0.1.1: icmp_seq=126 ttl=255 time=104.353 ms
64 bytes from 10.0.1.1: icmp_seq=127 ttl=255 time=148.034 ms
64 bytes from 10.0.1.1: icmp_seq=128 ttl=255 time=194.194 ms
--- 10.0.1.1 ping statistics ---
129 packets transmitted, 129 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 1.008/52.600/219.219/70.207 ms