|
本帖最后由 Frank7258 于 20.12.2009 20:31 编辑 ) x: z( Z. O7 G
未必,视网络情况而定,自己ping一下就大概知道了' |: n; l; w2 l( b; g2 b0 \
Google或者Open DNS至少属于最可靠的DNS之列 ...2 S/ @, x7 E5 `- _
fuchs 发表于 20/12/2009 00:09 ![]()
0 R; U8 Z0 g. |% q, R, u9 n1 ^) |6 }3 s8 _. t
1 I# t& P6 K# U$ T( i1 {7 e
这个速度差距还是比较明显的:
* `6 |. I/ K) Z" m, J
3 n3 {: C9 l( Bping LRZ网内的DNS:
# ?4 e8 F0 p8 `2 Rkan@kan-laptop:~$ ping 10.149.64.2 -c 5
' _2 ~' X i2 B! T2 jPING 10.149.64.2 (10.149.64.2) 56(84) bytes of data.$ f9 O- X' e4 w- g2 ~) U1 `0 S
64 bytes from 10.149.64.2: icmp_seq=1 ttl=62 time=0.497 ms
7 X9 e5 I4 y- k- X64 bytes from 10.149.64.2: icmp_seq=2 ttl=62 time=0.379 ms6 g( s$ F3 @& T& o* M* j
64 bytes from 10.149.64.2: icmp_seq=3 ttl=62 time=0.337 ms
6 `, j* z3 K, `$ H+ @64 bytes from 10.149.64.2: icmp_seq=4 ttl=62 time=0.380 ms* |. k4 B0 Q2 w: D
64 bytes from 10.149.64.2: icmp_seq=5 ttl=62 time=0.522 ms4 ~8 I% d# [8 a7 R O: k
1 ^; \7 ]. l4 \
/ c3 D* h; b1 f. f) I--- 10.149.64.2 ping statistics ---4 z8 X( I. ]: J8 _6 T1 i& {$ v7 G- c1 X
5 packets transmitted, 5 received, 0% packet loss, time 4004ms
. N: b9 V. }, srtt min/avg/max/mdev = 0.337/0.423/0.522/0.072 ms : \5 I: a, N8 E& J, j# |/ i
. E; L9 G* u7 H) T
2 w9 @% M9 I+ U# I+ X i5 c! j
ping Google DNS:0 R4 j: M7 y+ j* l8 O: `
kan@kan-laptop:~$ ping 8.8.8.8 -c 5
( {) a0 Z5 c+ X: R& |1 w2 KPING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.7 ]: a% R6 F. i( s- S' I
64 bytes from 8.8.8.8: icmp_seq=1 ttl=241 time=15.7 ms& A) L: k4 }# k7 _# }& l& v( A
64 bytes from 8.8.8.8: icmp_seq=2 ttl=241 time=21.0 ms; {( G- A" F* p+ O6 g y
64 bytes from 8.8.8.8: icmp_seq=3 ttl=241 time=19.6 ms6 v3 `& E2 v/ I# m
64 bytes from 8.8.8.8: icmp_seq=4 ttl=241 time=18.7 ms h! h- Z3 r9 m. K6 V% M8 J3 ~
64 bytes from 8.8.8.8: icmp_seq=5 ttl=241 time=15.2 ms+ _# _: C9 n# _" ]2 K. V
Z( C2 ^9 P4 C7 C" s" X--- 8.8.8.8 ping statistics ---1 Y0 Y. J U3 k8 P+ u
5 packets transmitted, 5 received, 0% packet loss, time 4006ms) w9 @4 C) R; k, n
rtt min/avg/max/mdev = 15.253/18.097/21.016/2.232 ms 2 i( D: P' @( L
! T7 v" L5 y8 V+ [6 Z1 ~# B( xtraceroute 8.8.8.8" N: y3 @$ l$ z4 v( e- U
kan@kan-laptop:~$ sudo tracert 8.8.8.8* l" o5 w: L6 a, l; m6 M$ s1 D0 ^
traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 60 byte packets
8 d% V. Y+ U) V* W) U% N- I 1 10.149.71.86 (10.149.71.86) 6.920 ms 6.918 ms *
9 b1 ?5 t0 u# J$ o x 2 * * *
% }9 [0 k7 y$ N# W 3 * * *
0 E: A8 Z- {( e, f' w4 F 4 * * *
1 P; t' B1 a; E: k( @7 ]# U1 t 5 * * *
0 _7 P5 \7 |4 X! u4 J 6 * natomat1-int.lrz-muenchen.de (138.246.99.4) 3.815 ms 3.650 ms- s# F5 A/ Q/ |3 B
7 vl-392.csr1-2wr.lrz-muenchen.de (138.246.99.29) 4.096 ms 4.117 ms 4.115 ms
" M, {/ J" J/ h n1 f: x5 B 8 xr-gar1-te1-3-147.x-win.dfn.de (188.1.37.89) 4.806 ms 5.039 ms *: O* h. n! T4 I) M' ], H6 I
9 * * *
, n% p; }$ M! F1 _10 * * *
: d4 s& O ]9 U3 r11 * * *( g5 k! d+ [# K$ t$ \% i0 }, I
12 * * *
; C6 u" `- L+ M9 n% k& ~13 * * *
, V- d5 `# j3 u" G: f. W14 google-public-dns-a.google.com (8.8.8.8) 14.428 ms 13.395 ms 14.635 ms |
|