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Возраст: 33  
C нами с 30.04.2006
Репутация: 77.5  
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Собрал родителям комп, поставил Xubuntu.
Водрузил на машинку wi-fi адаптер Broadcom BCM4318, подцепил на драйвере b43.
Инет от роутера (Cisco LinkSys WRT160NL с прошивкой от Yota) поймался на ура.
Странички грузились быстро, торрент качал на скорости 1-2 Мб/с.
Пришло время утащить машинку в комнату к родителям (грубо говоря, плюс стенка).
После перемещения компа NetworkManager показывает вполне приличный уровень сигнала - в районе 80%.
Однако странички стали грузиться очень медленно. Измерение скорости на яндексе и других ресурсах показывает, что комп работает с сетью на скорости порядка 20-30 Кб/с.
Стал пинговать с интервалом в 0.01 мс пакетами размером 1500. Наблюдаю >60% потерь.
Попробовал несколько разных каналов - эффект тот же: сигнал ~80%, скорость низкая.
Попробовал пинговать пакетами меньшего размера - процент потерб снизился.
Понижение MTU с 1500 до 1300 дало устойчивые 20% потерь.
UPD: Ненадолго. Опять наблюдаю 60% потерь.
—-
Довольно очевидно, что проблемы кроются в вафле.
Есть у кого-нибудь предположения, как еще можно повысить скорость сети?
chebog@chebog-ws1:~$ sudo ping -i 0.01 -s 1200 -c 300 -W 15 192.168.1.1
PING 192.168.1.1 (192.168.1.1) 1200(1228) bytes of data.
1208 bytes from 192.168.1.1: icmp_req=2 ttl=64 time=76.8 ms
1208 bytes from 192.168.1.1: icmp_req=3 ttl=64 time=90.8 ms
1208 bytes from 192.168.1.1: icmp_req=4 ttl=64 time=117 ms
1208 bytes from 192.168.1.1: icmp_req=5 ttl=64 time=124 ms
1208 bytes from 192.168.1.1: icmp_req=6 ttl=64 time=176 ms
1208 bytes from 192.168.1.1: icmp_req=7 ttl=64 time=187 ms
1208 bytes from 192.168.1.1: icmp_req=8 ttl=64 time=256 ms
1208 bytes from 192.168.1.1: icmp_req=9 ttl=64 time=267 ms
1208 bytes from 192.168.1.1: icmp_req=10 ttl=64 time=319 ms
1208 bytes from 192.168.1.1: icmp_req=11 ttl=64 time=315 ms
1208 bytes from 192.168.1.1: icmp_req=12 ttl=64 time=316 ms
1208 bytes from 192.168.1.1: icmp_req=13 ttl=64 time=369 ms
1208 bytes from 192.168.1.1: icmp_req=14 ttl=64 time=374 ms
1208 bytes from 192.168.1.1: icmp_req=15 ttl=64 time=364 ms
1208 bytes from 192.168.1.1: icmp_req=16 ttl=64 time=447 ms
1208 bytes from 192.168.1.1: icmp_req=17 ttl=64 time=468 ms
1208 bytes from 192.168.1.1: icmp_req=18 ttl=64 time=514 ms
1208 bytes from 192.168.1.1: icmp_req=19 ttl=64 time=584 ms
1208 bytes from 192.168.1.1: icmp_req=20 ttl=64 time=592 ms
1208 bytes from 192.168.1.1: icmp_req=21 ttl=64 time=620 ms
1208 bytes from 192.168.1.1: icmp_req=22 ttl=64 time=700 ms
1208 bytes from 192.168.1.1: icmp_req=23 ttl=64 time=695 ms
1208 bytes from 192.168.1.1: icmp_req=24 ttl=64 time=787 ms
1208 bytes from 192.168.1.1: icmp_req=25 ttl=64 time=782 ms
1208 bytes from 192.168.1.1: icmp_req=26 ttl=64 time=778 ms
1208 bytes from 192.168.1.1: icmp_req=27 ttl=64 time=788 ms
1208 bytes from 192.168.1.1: icmp_req=28 ttl=64 time=881 ms
1208 bytes from 192.168.1.1: icmp_req=29 ttl=64 time=896 ms
1208 bytes from 192.168.1.1: icmp_req=30 ttl=64 time=956 ms
1208 bytes from 192.168.1.1: icmp_req=31 ttl=64 time=943 ms
1208 bytes from 192.168.1.1: icmp_req=32 ttl=64 time=1008 ms
1208 bytes from 192.168.1.1: icmp_req=33 ttl=64 time=1003 ms
1208 bytes from 192.168.1.1: icmp_req=34 ttl=64 time=1013 ms
1208 bytes from 192.168.1.1: icmp_req=36 ttl=64 time=1124 ms
1208 bytes from 192.168.1.1: icmp_req=37 ttl=64 time=1136 ms
1208 bytes from 192.168.1.1: icmp_req=38 ttl=64 time=1193 ms
1208 bytes from 192.168.1.1: icmp_req=39 ttl=64 time=1215 ms
1208 bytes from 192.168.1.1: icmp_req=40 ttl=64 time=1306 ms
1208 bytes from 192.168.1.1: icmp_req=41 ttl=64 time=1313 ms
1208 bytes from 192.168.1.1: icmp_req=42 ttl=64 time=1368 ms
1208 bytes from 192.168.1.1: icmp_req=43 ttl=64 time=1379 ms
1208 bytes from 192.168.1.1: icmp_req=44 ttl=64 time=1385 ms
1208 bytes from 192.168.1.1: icmp_req=45 ttl=64 time=1452 ms
1208 bytes from 192.168.1.1: icmp_req=46 ttl=64 time=1462 ms
1208 bytes from 192.168.1.1: icmp_req=47 ttl=64 time=1522 ms
1208 bytes from 192.168.1.1: icmp_req=48 ttl=64 time=1523 ms
1208 bytes from 192.168.1.1: icmp_req=49 ttl=64 time=1518 ms
1208 bytes from 192.168.1.1: icmp_req=50 ttl=64 time=1588 ms
1208 bytes from 192.168.1.1: icmp_req=51 ttl=64 time=1583 ms
1208 bytes from 192.168.1.1: icmp_req=52 ttl=64 time=1650 ms
1208 bytes from 192.168.1.1: icmp_req=53 ttl=64 time=1672 ms
1208 bytes from 192.168.1.1: icmp_req=54 ttl=64 time=1759 ms
1208 bytes from 192.168.1.1: icmp_req=55 ttl=64 time=1777 ms
1208 bytes from 192.168.1.1: icmp_req=56 ttl=64 time=1773 ms
1208 bytes from 192.168.1.1: icmp_req=57 ttl=64 time=1824 ms
1208 bytes from 192.168.1.1: icmp_req=58 ttl=64 time=1874 ms
1208 bytes from 192.168.1.1: icmp_req=59 ttl=64 time=1885 ms
1208 bytes from 192.168.1.1: icmp_req=60 ttl=64 time=1964 ms
1208 bytes from 192.168.1.1: icmp_req=61 ttl=64 time=1958 ms
1208 bytes from 192.168.1.1: icmp_req=62 ttl=64 time=2026 ms
1208 bytes from 192.168.1.1: icmp_req=63 ttl=64 time=2031 ms
1208 bytes from 192.168.1.1: icmp_req=64 ttl=64 time=2078 ms
1208 bytes from 192.168.1.1: icmp_req=65 ttl=64 time=2139 ms
1208 bytes from 192.168.1.1: icmp_req=66 ttl=64 time=2145 ms
1208 bytes from 192.168.1.1: icmp_req=67 ttl=64 time=2197 ms
1208 bytes from 192.168.1.1: icmp_req=68 ttl=64 time=2203 ms
1208 bytes from 192.168.1.1: icmp_req=69 ttl=64 time=2209 ms
1208 bytes from 192.168.1.1: icmp_req=70 ttl=64 time=2215 ms
1208 bytes from 192.168.1.1: icmp_req=71 ttl=64 time=2273 ms
1208 bytes from 192.168.1.1: icmp_req=73 ttl=64 time=2339 ms
1208 bytes from 192.168.1.1: icmp_req=74 ttl=64 time=2334 ms
1208 bytes from 192.168.1.1: icmp_req=75 ttl=64 time=2354 ms
1208 bytes from 192.168.1.1: icmp_req=76 ttl=64 time=2381 ms
1208 bytes from 192.168.1.1: icmp_req=77 ttl=64 time=2431 ms
1208 bytes from 192.168.1.1: icmp_req=78 ttl=64 time=2546 ms
1208 bytes from 192.168.1.1: icmp_req=79 ttl=64 time=2558 ms
1208 bytes from 192.168.1.1: icmp_req=80 ttl=64 time=2554 ms
1208 bytes from 192.168.1.1: icmp_req=82 ttl=64 time=2648 ms
1208 bytes from 192.168.1.1: icmp_req=83 ttl=64 time=2680 ms
1208 bytes from 192.168.1.1: icmp_req=84 ttl=64 time=2703 ms
1208 bytes from 192.168.1.1: icmp_req=85 ttl=64 time=2783 ms
1208 bytes from 192.168.1.1: icmp_req=86 ttl=64 time=2790 ms
1208 bytes from 192.168.1.1: icmp_req=87 ttl=64 time=2854 ms
1208 bytes from 192.168.1.1: icmp_req=88 ttl=64 time=2862 ms
1208 bytes from 192.168.1.1: icmp_req=89 ttl=64 time=2917 ms
1208 bytes from 192.168.1.1: icmp_req=90 ttl=64 time=2912 ms
1208 bytes from 192.168.1.1: icmp_req=91 ttl=64 time=2918 ms
1208 bytes from 192.168.1.1: icmp_req=92 ttl=64 time=2966 ms
1208 bytes from 192.168.1.1: icmp_req=93 ttl=64 time=2984 ms
1208 bytes from 192.168.1.1: icmp_req=94 ttl=64 time=3042 ms
1208 bytes from 192.168.1.1: icmp_req=95 ttl=64 time=3097 ms
1208 bytes from 192.168.1.1: icmp_req=96 ttl=64 time=3099 ms
1208 bytes from 192.168.1.1: icmp_req=98 ttl=64 time=3149 ms
1208 bytes from 192.168.1.1: icmp_req=99 ttl=64 time=3162 ms
1208 bytes from 192.168.1.1: icmp_req=100 ttl=64 time=3193 ms
1208 bytes from 192.168.1.1: icmp_req=101 ttl=64 time=3213 ms
1208 bytes from 192.168.1.1: icmp_req=102 ttl=64 time=3209 ms
1208 bytes from 192.168.1.1: icmp_req=103 ttl=64 time=3269 ms
1208 bytes from 192.168.1.1: icmp_req=104 ttl=64 time=3287 ms
1208 bytes from 192.168.1.1: icmp_req=105 ttl=64 time=3283 ms
1208 bytes from 192.168.1.1: icmp_req=106 ttl=64 time=3365 ms
1208 bytes from 192.168.1.1: icmp_req=107 ttl=64 time=3358 ms
1208 bytes from 192.168.1.1: icmp_req=108 ttl=64 time=3358 ms
1208 bytes from 192.168.1.1: icmp_req=109 ttl=64 time=3391 ms
1208 bytes from 192.168.1.1: icmp_req=110 ttl=64 time=3404 ms
1208 bytes from 192.168.1.1: icmp_req=111 ttl=64 time=3476 ms
1208 bytes from 192.168.1.1: icmp_req=112 ttl=64 time=3485 ms
1208 bytes from 192.168.1.1: icmp_req=113 ttl=64 time=3481 ms
1208 bytes from 192.168.1.1: icmp_req=114 ttl=64 time=3532 ms
1208 bytes from 192.168.1.1: icmp_req=115 ttl=64 time=3541 ms
1208 bytes from 192.168.1.1: icmp_req=116 ttl=64 time=3622 ms
1208 bytes from 192.168.1.1: icmp_req=117 ttl=64 time=3618 ms
1208 bytes from 192.168.1.1: icmp_req=118 ttl=64 time=3640 ms
1208 bytes from 192.168.1.1: icmp_req=119 ttl=64 time=3726 ms
1208 bytes from 192.168.1.1: icmp_req=120 ttl=64 time=3724 ms
1208 bytes from 192.168.1.1: icmp_req=121 ttl=64 time=3728 ms
1208 bytes from 192.168.1.1: icmp_req=122 ttl=64 time=3813 ms
1208 bytes from 192.168.1.1: icmp_req=123 ttl=64 time=3806 ms
1208 bytes from 192.168.1.1: icmp_req=124 ttl=64 time=3865 ms
1208 bytes from 192.168.1.1: icmp_req=125 ttl=64 time=3862 ms
1208 bytes from 192.168.1.1: icmp_req=126 ttl=64 time=3873 ms
1208 bytes from 192.168.1.1: icmp_req=127 ttl=64 time=3917 ms
1208 bytes from 192.168.1.1: icmp_req=128 ttl=64 time=3924 ms
1208 bytes from 192.168.1.1: icmp_req=130 ttl=64 time=3991 ms
1208 bytes from 192.168.1.1: icmp_req=131 ttl=64 time=3987 ms
1208 bytes from 192.168.1.1: icmp_req=132 ttl=64 time=4057 ms
1208 bytes from 192.168.1.1: icmp_req=133 ttl=64 time=4070 ms
1208 bytes from 192.168.1.1: icmp_req=134 ttl=64 time=4108 ms
1208 bytes from 192.168.1.1: icmp_req=135 ttl=64 time=4129 ms
1208 bytes from 192.168.1.1: icmp_req=137 ttl=64 time=4205 ms
1208 bytes from 192.168.1.1: icmp_req=138 ttl=64 time=4211 ms
1208 bytes from 192.168.1.1: icmp_req=139 ttl=64 time=4292 ms
1208 bytes from 192.168.1.1: icmp_req=140 ttl=64 time=4292 ms
1208 bytes from 192.168.1.1: icmp_req=141 ttl=64 time=4300 ms
1208 bytes from 192.168.1.1: icmp_req=142 ttl=64 time=4361 ms
1208 bytes from 192.168.1.1: icmp_req=143 ttl=64 time=4387 ms
1208 bytes from 192.168.1.1: icmp_req=144 ttl=64 time=4383 ms
1208 bytes from 192.168.1.1: icmp_req=145 ttl=64 time=4408 ms
1208 bytes from 192.168.1.1: icmp_req=146 ttl=64 time=4448 ms
1208 bytes from 192.168.1.1: icmp_req=147 ttl=64 time=4516 ms
1208 bytes from 192.168.1.1: icmp_req=148 ttl=64 time=4532 ms
1208 bytes from 192.168.1.1: icmp_req=149 ttl=64 time=4624 ms
1208 bytes from 192.168.1.1: icmp_req=150 ttl=64 time=4650 ms
1208 bytes from 192.168.1.1: icmp_req=151 ttl=64 time=4762 ms
1208 bytes from 192.168.1.1: icmp_req=152 ttl=64 time=4770 ms
1208 bytes from 192.168.1.1: icmp_req=153 ttl=64 time=4789 ms
1208 bytes from 192.168.1.1: icmp_req=154 ttl=64 time=4872 ms
1208 bytes from 192.168.1.1: icmp_req=155 ttl=64 time=4879 ms
1208 bytes from 192.168.1.1: icmp_req=156 ttl=64 time=4893 ms
1208 bytes from 192.168.1.1: icmp_req=157 ttl=64 time=4985 ms
1208 bytes from 192.168.1.1: icmp_req=158 ttl=64 time=4995 ms
1208 bytes from 192.168.1.1: icmp_req=159 ttl=64 time=5000 ms
1208 bytes from 192.168.1.1: icmp_req=160 ttl=64 time=5053 ms
1208 bytes from 192.168.1.1: icmp_req=162 ttl=64 time=5161 ms
1208 bytes from 192.168.1.1: icmp_req=163 ttl=64 time=5219 ms
1208 bytes from 192.168.1.1: icmp_req=164 ttl=64 time=5277 ms
1208 bytes from 192.168.1.1: icmp_req=165 ttl=64 time=5326 ms
1208 bytes from 192.168.1.1: icmp_req=166 ttl=64 time=5393 ms
1208 bytes from 192.168.1.1: icmp_req=171 ttl=64 time=5340 ms
1208 bytes from 192.168.1.1: icmp_req=172 ttl=64 time=5361 ms
1208 bytes from 192.168.1.1: icmp_req=173 ttl=64 time=5445 ms
1208 bytes from 192.168.1.1: icmp_req=175 ttl=64 time=5427 ms
1208 bytes from 192.168.1.1: icmp_req=179 ttl=64 time=5385 ms
1208 bytes from 192.168.1.1: icmp_req=180 ttl=64 time=5392 ms
1208 bytes from 192.168.1.1: icmp_req=183 ttl=64 time=5433 ms
1208 bytes from 192.168.1.1: icmp_req=187 ttl=64 time=5400 ms
1208 bytes from 192.168.1.1: icmp_req=192 ttl=64 time=5433 ms
1208 bytes from 192.168.1.1: icmp_req=196 ttl=64 time=5504 ms
1208 bytes from 192.168.1.1: icmp_req=202 ttl=64 time=5409 ms
1208 bytes from 192.168.1.1: icmp_req=208 ttl=64 time=5355 ms
1208 bytes from 192.168.1.1: icmp_req=211 ttl=64 time=5382 ms
1208 bytes from 192.168.1.1: icmp_req=213 ttl=64 time=5445 ms
1208 bytes from 192.168.1.1: icmp_req=219 ttl=64 time=5482 ms
1208 bytes from 192.168.1.1: icmp_req=225 ttl=64 time=5448 ms
1208 bytes from 192.168.1.1: icmp_req=227 ttl=64 time=5489 ms
1208 bytes from 192.168.1.1: icmp_req=228 ttl=64 time=5509 ms
1208 bytes from 192.168.1.1: icmp_req=289 ttl=64 time=5003 ms
1208 bytes from 192.168.1.1: icmp_req=290 ttl=64 time=5004 ms
1208 bytes from 192.168.1.1: icmp_req=296 ttl=64 time=4939 ms
--- 192.168.1.1 ping statistics ---
300 packets transmitted, 179 received, 40% packet loss, time 3456ms
rtt min/avg/max/mdev = 76.847/2936.056/5509.631/1660.424 ms, pipe 220
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Попробовал понизить скорость адаптера. Может это и расширяет диапазон, но мне не помогло.
sudo iwconfig wlan1 rate 1M fixed |
Потери все еще 60%.
Идеи будут?
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Дайте в руки мне баян, я порву его совсем.
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Возраст: 33
C нами с 30.04.2006
Репутация: 77.5
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Тема закрыта. Отодвинул комп от стенки - и потери прекратились. 
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Дайте в руки мне баян, я порву его совсем.
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