根据测试结果看,可能是广东电信到 CDN 节点的 TCP 路由问题。
不过这个调度很奇怪,使用运营商分配 DNS 情况下,广东省还要跨省调度,又不是什么 IDC 资源匮乏的地方
说句题外话,不要用一些奇怪的 CDN,开了大会员看视频,码率增加后,奇怪的 CDN 速度太慢反而导致体验更差了。
root@ubuntuct:~# curl -m 5 -Iv https://static.hdslb.com/js/jquery.min.js
* Trying 117.24.1.239...
* TCP_NODELAY set
* After 2494ms connect time, move on!
* connect to 117.24.1.239 port 443 failed: Connection timed out
* Trying 117.24.1.242...
* TCP_NODELAY set
* After 1246ms connect time, move on!
* connect to 117.24.1.242 port 443 failed: Connection timed out
* Trying 117.24.1.240...
* TCP_NODELAY set
* After 623ms connect time, move on!
* connect to 117.24.1.240 port 443 failed: Connection timed out
* Trying 117.24.1.241...
* TCP_NODELAY set
* After 311ms connect time, move on!
* connect to 117.24.1.241 port 443 failed: Connection timed out
* Trying 117.24.1.238...
* TCP_NODELAY set
* After 155ms connect time, move on!
root@ubuntuct:~# nslookup static.hdslb.com 202.96.134.133
Server: 202.96.134.133
Address: 202.96.134.133#53
Non-authoritative answer:
static.hdslb.com canonical name = static.hdslb.com.w.kunlunhuf.com.
Name: static.hdslb.com.w.kunlunhuf.com
Address: 117.24.1.239
Name: static.hdslb.com.w.kunlunhuf.com
Address: 117.24.1.241
Name: static.hdslb.com.w.kunlunhuf.com
Address: 117.24.1.238
Name: static.hdslb.com.w.kunlunhuf.com
Address: 117.24.1.240
Name: static.hdslb.com.w.kunlunhuf.com
Address: 117.24.1.244
Name: static.hdslb.com.w.kunlunhuf.com
Address: 117.24.1.248
Name: static.hdslb.com.w.kunlunhuf.com
Address: 117.24.1.243
Name: static.hdslb.com.w.kunlunhuf.com
Address: 117.24.1.242
root@ubuntuct:~# mtr -t --report 117.24.1.239
Start: 2020-10-10T13:28:38+0800
HOST: ubuntuweb Loss% Snt Last Avg Best Wrst StDev
1.|-- 192.168.*.1 0.0% 10 0.6 1.0 0.6 1.3 0.2
2.|-- 113.88.*.1 0.0% 10 73.0 13.5 3.4 73.0 21.0
3.|-- 202.105.155.229 0.0% 10 3.9 5.6 3.0 10.3 2.9
4.|-- 183.56.65.78 0.0% 10 2.3 3.1 2.3 3.6 0.5
5.|-- 202.97.65.86 0.0% 10 19.6 18.0 14.4 20.3 1.9
6.|-- 27.152.60.86 0.0% 10 22.6 19.0 17.7 22.6 1.3
7.|-- 125.77.128.177 10.0% 10 66.0 42.0 19.2 66.0 15.6
8.|-- 117.24.0.34 0.0% 10 17.6 17.9 17.6 18.4 0.3
9.|-- 117.24.1.240 0.0% 10 18.5 18.4 17.6 19.0 0.4
root@ubuntuct:~# mtr -t --tcp --port 443 --report 117.24.1.239
Start: 2020-10-10T13:28:12+0800
HOST: ubuntuweb Loss% Snt Last Avg Best Wrst StDev
1.|-- 192.168.*.1 0.0% 10 1.0 1.1 1.0 1.3 0.1
2.|-- 113.88.*.1 0.0% 10 3.3 6.7 3.1 9.3 2.5
3.|-- 61.146.247.133 0.0% 10 2.8 3.4 2.8 3.9 0.4
4.|-- 183.56.65.78 50.0% 10 7121. 2845. 3.5 7121. 2729.0
5.|-- 202.97.66.25 50.0% 10 3066. 2260. 24.9 7154. 3004.0
6.|-- 27.152.60.74 20.0% 10 7149. 1421. 22.7 7149. 2544.6
7.|-- ??? 100.0 10 0.0 0.0 0.0 0.0 0.0
8.|-- 117.24.0.62 30.0% 10 7252. 3074. 18.9 7252. 3068.0
9.|-- 117.24.1.240 30.0% 10 1032. 2065. 19.0 7256. 2459.9
1
0A0 2020-10-10 14:03:38 +08:00 via Android
bb 站的 cdn 常年毛病不断。我在海外经常莫名其妙一阵子一阵子故障。
要么直播卡疑生,或者视频卡疑生。这个好了那个又坏了,高清不卡了大会员卡,大会员不卡了追番卡。 而且 iOS 上常年拖动就卡。方法试尽最终全看脸。b 站跟度盘,是唯一把我养成对网速看淡的地方。 尽管除了这俩,访问其他世界任何角落都能充分跑满我的 10g 光纤。 |
2
0ZXYDDu796nVCFxq 2020-10-10 14:13:43 +08:00
广东电信测试解析结果是 广州东莞佛山电信 几个点
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3
murmur 2020-10-10 14:16:15 +08:00
是的,以前只是视频打不开,现在 web 页面都卡
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4
zzw1998 2020-10-10 14:46:17 +08:00
深圳电信测试没问题,解析出来是广州、佛山、江门的节点
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5
zzw1998 2020-10-10 14:47:30 +08:00
@zzw1998 补图: ![Snipaste_20201010_144659.jpg]( https://i.loli.net/2020/10/10/1nwhyfj4S2cZBFL.jpg)
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7
oovveeaarr OP |
8
oovveeaarr OP 绝了,又开始了,这回换了个域名,这次看样子像是回源宽带不足
```bash ~ >>> time curl -m 5 -Iv https://i0.hdslb.com/bfs/sycp/creative_img/202009/8a903b91af2a650b4572f7030de42bfd.jpg * Trying 58.49.136.1:443... * Connected to i0.hdslb.com (58.49.136.1) port 443 (#0) * ALPN, offering h2 * ALPN, offering http/1.1 * successfully set certificate verify locations: * CAfile: /etc/ssl/certs/ca-certificates.crt CApath: none * TLSv1.3 (OUT), TLS handshake, Client hello (1): * Operation timed out after 5000 milliseconds with 0 out of 0 bytes received * Closing connection 0 curl: (28) Operation timed out after 5000 milliseconds with 0 out of 0 bytes received curl -m 5 -Iv 0.03s user 0.01s system 0% cpu 5.015 total ``` |
9
kuro1 2020-10-10 15:09:13 +08:00
老毛病了
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10
alect 2020-10-10 15:13:51 +08:00
用的阿里的 cdn 好像,解析的不是非常准确
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11
q409195961 2020-10-10 15:28:17 +08:00
怪不得看 1080P+贼卡
我还以为广东电信宽带出问题了 |
12
lingaoyi 2020-10-10 15:33:09 +08:00
早就是这样了。。。
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13
zzw1998 2020-10-10 16:41:47 +08:00
@oovveeaarr 这几个域名都是阿里云 CDN 吧,怕不是阿里的问题,我这没遇到过,也没办法复现
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14
x86 2020-10-10 16:44:27 +08:00 via iPhone
昨晚刷视频发现了,1080P+加载不动。(电信 1000M )
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15
OrbitPortal 2020-10-10 18:36:44 +08:00 via Android
b 站在大粤省 CDN 感觉就没完全正常过,快如 500M 都没用,卡住之后就只能靠来回切换清晰度来重新缓冲
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16
whywhywhy 2020-10-10 18:45:47 +08:00
最近广东电信宽带,不能访问移动官网 gd.10086.cn ,一脸懵逼,重新拨号也不行,解析 IP 也没有错,过了几天,自动好了,还是一脸懵逼。。。
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18
oovveeaarr OP @zzw1998 CDN 服务有分组的,Bilibili 都是大客户了,提一些客制化要求是可能的。。
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19
murmur 2020-10-10 19:36:09 +08:00
现在晚上了,其他网站搜搜的,b 站首页卡的都有问题,广州城中村电信
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20
oovveeaarr OP @murmur 又开始了,看来是高峰期就切奇怪的 CDN
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21
shell233 2020-10-11 01:39:27 +08:00
估计 Bilibili 在跑成本调度吧,不强制要求本地覆盖。
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22
imldy 2021-04-29 23:32:48 +08:00
B 站在用各种不知名 cdn,播放体验确实不行。
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