J'utilise Ubuntu 12.04, Chromium 18.0.1025.151 (Developer Build 130497 Linux) Ubuntu 12.04, Firefox 12.0 mais ma vitesse de navigation est médiocre. Le navigateur affiche toujours "Waitng for aaa.bbb.com" en bas du navigateur. Comment puis-je déboguer cela et découvrir la raison? Je me connecte au réseau 3G via le réseau Bluetooth PAN d'un appareil Android. Quelques statistiques ci-dessous.
$ dig asdsa.com
; <<>> DiG 9.8.1-P1 <<>> asdsa.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 39878
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 13, ADDITIONAL: 13
;; QUESTION SECTION:
;asdsa.com. IN A
;; ANSWER SECTION:
asdsa.com. 307707 IN A 200.31.91.194
;; AUTHORITY SECTION:
com. 34662 IN NS e.gtld-servers.net.
com. 34662 IN NS a.gtld-servers.net.
com. 34662 IN NS k.gtld-servers.net.
com. 34662 IN NS h.gtld-servers.net.
com. 34662 IN NS g.gtld-servers.net.
com. 34662 IN NS l.gtld-servers.net.
com. 34662 IN NS j.gtld-servers.net.
com. 34662 IN NS c.gtld-servers.net.
com. 34662 IN NS b.gtld-servers.net.
com. 34662 IN NS m.gtld-servers.net.
com. 34662 IN NS d.gtld-servers.net.
com. 34662 IN NS f.gtld-servers.net.
com. 34662 IN NS i.gtld-servers.net.
;; ADDITIONAL SECTION:
a.gtld-servers.net. 50538 IN A 192.5.6.30
a.gtld-servers.net. 59333 IN AAAA 2001:503:a83e::2:30
b.gtld-servers.net. 40208 IN A 192.33.14.30
b.gtld-servers.net. 45531 IN AAAA 2001:503:231d::2:30
c.gtld-servers.net. 45531 IN A 192.26.92.30
d.gtld-servers.net. 45526 IN A 192.31.80.30
e.gtld-servers.net. 45526 IN A 192.12.94.30
f.gtld-servers.net. 40177 IN A 192.35.51.30
g.gtld-servers.net. 35936 IN A 192.42.93.30
h.gtld-servers.net. 40177 IN A 192.54.112.30
i.gtld-servers.net. 45526 IN A 192.43.172.30
j.gtld-servers.net. 45526 IN A 192.48.79.30
k.gtld-servers.net. 35936 IN A 192.52.178.30
;; Query time: 227 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed Jun 6 22:40:19 2012
;; MSG SIZE rcvd: 499
$ ping google.com
PING google.com (74.125.236.199) 56(84) bytes of data.
64 bytes from maa03s17-in-f7.1e100.net (74.125.236.199): icmp_req=1 ttl=54 time=173 ms
64 bytes from maa03s17-in-f7.1e100.net (74.125.236.199): icmp_req=2 ttl=54 time=162 ms
64 bytes from maa03s17-in-f7.1e100.net (74.125.236.199): icmp_req=3 ttl=54 time=228 ms
64 bytes from maa03s17-in-f7.1e100.net (74.125.236.199): icmp_req=4 ttl=54 time=236 ms
64 bytes from maa03s17-in-f7.1e100.net (74.125.236.199): icmp_req=5 ttl=54 time=162 ms
64 bytes from maa03s17-in-f7.1e100.net (74.125.236.199): icmp_req=6 ttl=54 time=215 ms
64 bytes from maa03s17-in-f7.1e100.net (74.125.236.199): icmp_req=7 ttl=54 time=218 ms
64 bytes from maa03s17-in-f7.1e100.net (74.125.236.199): icmp_req=8 ttl=54 time=232 ms
64 bytes from maa03s17-in-f7.1e100.net (74.125.236.199): icmp_req=9 ttl=54 time=212 ms
^C
--- google.com ping statistics ---
9 packets transmitted, 9 received, 0% packet loss, time 8007ms
rtt min/avg/max/mdev = 162.119/204.385/236.105/28.286 ms
Existe-t-il également un navigateur qui fournit plus de détails lors du chargement d'une page?
Edit: plus d'informations de la réponse de @izx
$ curl -w "@curl-timing.cfg" -o /dev/null -s http://www.google.com/
DNS lookup : 0.363
Connect to server (TCP) : 0.512
Connect to server (HTTP/S) : 0.000
Time from start until transfer began: 0.512
Time for redirection (if any) : 0.000
Total time before transfer started : 0.749
Total time : 0.749
Size of download (bytes) : 221
Average d/l speed (bytes/s) : 294.000
$ curl -w "@curl-timing.cfg" -o /dev/null -s http://india.gov.in
DNS lookup : 0.351
Connect to server (TCP) : 0.526
Connect to server (HTTP/S) : 0.000
Time from start until transfer began: 0.526
Time for redirection (if any) : 0.000
Total time before transfer started : 0.770
Total time : 1.643
Size of download (bytes) : 34346
Average d/l speed (bytes/s) : 20905.000
netstat -an
pour voir quelles connexions ouvertes et gourmandes en bande passante vous pourriez avoir sans en être conscient (comme le mécanisme de mise à jour automatique d'Ubuntu, un client torrent oublié, etc.)