hi guys,
check this out:
[root@localhost /]# time dig www.hyblr.com +tcp
; <<>> DiG 9.9.3-rl.156.01-P1-RedHat-9.9.3-3.P1.fc18 <<>> www.hyblr.com +tcp ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 35033 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 1
;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;www.hyblr.com. IN A
;; ANSWER SECTION: www.hyblr.com. 3 IN A 111.8.98.138
;; AUTHORITY SECTION: www.hyblr.com. 3518 IN NS ns2.hyblr.com. www.hyblr.com. 3518 IN NS ns3.hyblr.com. www.hyblr.com. 3518 IN NS ns1.hyblr.com.
;; Query time: 10 msec ;; SERVER: 111.8.14.18#53(111.8.14.18) ;; WHEN: Mon Nov 04 14:56:40 CST 2013 ;; MSG SIZE rcvd: 112
real 0m0.040s user 0m0.014s sys 0m0.018s
[root@localhost /]# time wget -O /dev/null www.hyblr.com --2013-11-04 14:55:18-- http://www.hyblr.com/ Resolving www.hyblr.com (www.hyblr.com)... 111.8.98.138 Connecting to www.hyblr.com (www.hyblr.com)|111.8.98.138|:80... connected. HTTP request sent, awaiting response... 200 OK Length: unspecified [text/html] Saving to: ‘/dev/null’
[ <=> ] 81,980 --.-K/s in 0.05s
2013-11-04 14:55:33 (1.44 MB/s) - ‘/dev/null’ saved [81980]
real 0m15.203s user 0m0.007s sys 0m0.014s
I've read the sourcecode of wget. Maybe the difference comes from gethostbyname. Anyone can help me? or tell me where's the sourcecode of gethostbyname. Much Thx.
baobeileaf
El 2013-11-04 08:08, baobeileaf escribió:
I've read the sourcecode of wget. Maybe the difference comes from gethostbyname. Anyone can help me? or tell me where's the sourcecode of gethostbyname. Much Thx.
I don't understand what are you trying to do. dig only do a DNS query, and wget a DNS query + TCP handshake + HTTP conversation.
dig can do tcp mode query. just use: dig xxx +tcp.
baobeileaf
From: Juan Orti Alcaine Date: 2013-11-04 15:51 To: baobeileaf; KDE on Fedora discussion Subject: Re: why dig (tcp) is much faster than wget(gethostbyname?) ? El 2013-11-04 08:08, baobeileaf escribió:
I've read the sourcecode of wget. Maybe the difference comes from gethostbyname. Anyone can help me? or tell me where's the sourcecode of gethostbyname. Much Thx.
I don't understand what are you trying to do. dig only do a DNS query, and wget a DNS query + TCP handshake + HTTP conversation.
On 11/04/13 15:08, baobeileaf wrote:
hi guys,
check this out:
[root@localhost /]# time dig www.hyblr.com +tcp
; <<>> DiG 9.9.3-rl.156.01-P1-RedHat-9.9.3-3.P1.fc18 <<>> www.hyblr.com +tcp ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 35033 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 1
;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;www.hyblr.com. IN A
;; ANSWER SECTION: www.hyblr.com. 3 IN A 111.8.98.138
;; AUTHORITY SECTION: www.hyblr.com. 3518 IN NS ns2.hyblr.com. www.hyblr.com. 3518 IN NS ns3.hyblr.com. www.hyblr.com. 3518 IN NS ns1.hyblr.com.
;; Query time: 10 msec ;; SERVER: 111.8.14.18#53(111.8.14.18) ;; WHEN: Mon Nov 04 14:56:40 CST 2013 ;; MSG SIZE rcvd: 112
real 0m0.040s user 0m0.014s sys 0m0.018s
[root@localhost /]# time wget -O /dev/null www.hyblr.com --2013-11-04 14:55:18-- http://www.hyblr.com/ Resolving www.hyblr.com (www.hyblr.com)... 111.8.98.138 Connecting to www.hyblr.com (www.hyblr.com)|111.8.98.138|:80... connected. HTTP request sent, awaiting response... 200 OK Length: unspecified [text/html] Saving to: ‘/dev/null’
[ <=> ] 81,980 --.-K/s in 0.05s2013-11-04 14:55:33 (1.44 MB/s) - ‘/dev/null’ saved [81980]
real 0m15.203s user 0m0.007s sys 0m0.014s
I've read the sourcecode of wget. Maybe the difference comes from gethostbyname. Anyone can help me? or tell me where's the sourcecode of gethostbyname.
I think the question you should be asking is this.....
[egreshko@meimei ~]$ time wget -O /dev/null www.hyblr.com --2013-11-04 16:36:01-- http://www.hyblr.com/ Resolving www.hyblr.com (www.hyblr.com)... 111.8.98.138 Connecting to www.hyblr.com (www.hyblr.com)|111.8.98.138|:80... connected. HTTP request sent, awaiting response... 200 OK Length: unspecified [text/html] Saving to: ‘/dev/null’
[ <=> ] 81,736 225KB/s in 0.4s
2013-11-04 16:36:17 (225 KB/s) - ‘/dev/null’ saved [81736]
real 0m15.498s user 0m0.003s sys 0m0.004s
as opposed to this....
[egreshko@meimei ~]$ time wget -O /dev/null 111.8.98.138 --2013-11-04 16:36:50-- http://111.8.98.138/ Connecting to 111.8.98.138:80... connected. HTTP request sent, awaiting response... 200 OK Length: unspecified [text/html] Saving to: ‘/dev/null’
[ <=> ] 81,980 261KB/s in 0.3s
2013-11-04 16:36:50 (261 KB/s) - ‘/dev/null’ saved [81980]
real 0m0.437s user 0m0.003s sys 0m0.002s
And then notice this....
[egreshko@meimei ~]$ host www.hyblr.com www.hyblr.com has address 111.8.98.138 ;; connection timed out; trying next origin Host www.hyblr.com not found: 3(NXDOMAIN) Host www.hyblr.com not found: 3(NXDOMAIN)
I suspect a DNS configuration issue for that host/domain.
On 11/04/13 16:39, Ed Greshko wrote:
[egreshko@meimei ~]$ host www.hyblr.com www.hyblr.com has address 111.8.98.138 ;; connection timed out; trying next origin Host www.hyblr.com not found: 3(NXDOMAIN) Host www.hyblr.com not found: 3(NXDOMAIN)
I suspect a DNS configuration issue for that host/domain.
FWIW, it seems to be a problem with AAAA records....
[egreshko@meimei ~]$ time host -t a www.hyblr.com www.hyblr.com has address 58.20.185.61
real 0m0.093s user 0m0.009s sys 0m0.002s [egreshko@meimei ~]$ time host -t aaaa www.hyblr.com ;; connection timed out; trying next origin Host www.hyblr.com not found: 3(NXDOMAIN)
real 0m10.013s user 0m0.008s sys 0m0.004s
much thx
baobeileaf
From: Ed Greshko Date: 2013-11-04 16:44 To: KDE on Fedora discussion Subject: Re: why dig (tcp) is much faster than wget (gethostbyname?) ? On 11/04/13 16:39, Ed Greshko wrote:
[egreshko@meimei ~]$ host www.hyblr.com www.hyblr.com has address 111.8.98.138 ;; connection timed out; trying next origin Host www.hyblr.com not found: 3(NXDOMAIN) Host www.hyblr.com not found: 3(NXDOMAIN)
I suspect a DNS configuration issue for that host/domain.
FWIW, it seems to be a problem with AAAA records....
[egreshko@meimei ~]$ time host -t a www.hyblr.com www.hyblr.com has address 58.20.185.61
real 0m0.093s user 0m0.009s sys 0m0.002s [egreshko@meimei ~]$ time host -t aaaa www.hyblr.com ;; connection timed out; trying next origin Host www.hyblr.com not found: 3(NXDOMAIN)
real 0m10.013s user 0m0.008s sys 0m0.004s
Greshko, thx.
baobeileaf
From: Ed Greshko Date: 2013-11-04 16:39 To: KDE on Fedora discussion CC: baobeileaf Subject: Re: why dig (tcp) is much faster than wget (gethostbyname?) ? On 11/04/13 15:08, baobeileaf wrote:
hi guys,
check this out:
[root@localhost /]# time dig www.hyblr.com +tcp
; <<>> DiG 9.9.3-rl.156.01-P1-RedHat-9.9.3-3.P1.fc18 <<>> www.hyblr.com +tcp ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 35033 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 3, ADDITIONAL: 1
;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;www.hyblr.com. IN A
;; ANSWER SECTION: www.hyblr.com. 3 IN A 111.8.98.138
;; AUTHORITY SECTION: www.hyblr.com. 3518 IN NS ns2.hyblr.com. www.hyblr.com. 3518 IN NS ns3.hyblr.com. www.hyblr.com. 3518 IN NS ns1.hyblr.com.
;; Query time: 10 msec ;; SERVER: 111.8.14.18#53(111.8.14.18) ;; WHEN: Mon Nov 04 14:56:40 CST 2013 ;; MSG SIZE rcvd: 112
real 0m0.040s user 0m0.014s sys 0m0.018s
[root@localhost /]# time wget -O /dev/null www.hyblr.com --2013-11-04 14:55:18-- http://www.hyblr.com/ Resolving www.hyblr.com (www.hyblr.com)... 111.8.98.138 Connecting to www.hyblr.com (www.hyblr.com)|111.8.98.138|:80... connected. HTTP request sent, awaiting response... 200 OK Length: unspecified [text/html] Saving to: ‘/dev/null’
[ <=> ] 81,980 --.-K/s in 0.05s2013-11-04 14:55:33 (1.44 MB/s) - ‘/dev/null’ saved [81980]
real 0m15.203s user 0m0.007s sys 0m0.014s
I've read the sourcecode of wget. Maybe the difference comes from gethostbyname. Anyone can help me? or tell me where's the sourcecode of gethostbyname.
I think the question you should be asking is this.....
[egreshko@meimei ~]$ time wget -O /dev/null www.hyblr.com --2013-11-04 16:36:01-- http://www.hyblr.com/ Resolving www.hyblr.com (www.hyblr.com)... 111.8.98.138 Connecting to www.hyblr.com (www.hyblr.com)|111.8.98.138|:80... connected. HTTP request sent, awaiting response... 200 OK Length: unspecified [text/html] Saving to: ‘/dev/null’
[ <=> ] 81,736 225KB/s in 0.4s
2013-11-04 16:36:17 (225 KB/s) - ‘/dev/null’ saved [81736]
real 0m15.498s user 0m0.003s sys 0m0.004s
as opposed to this....
[egreshko@meimei ~]$ time wget -O /dev/null 111.8.98.138 --2013-11-04 16:36:50-- http://111.8.98.138/ Connecting to 111.8.98.138:80... connected. HTTP request sent, awaiting response... 200 OK Length: unspecified [text/html] Saving to: ‘/dev/null’
[ <=> ] 81,980 261KB/s in 0.3s
2013-11-04 16:36:50 (261 KB/s) - ‘/dev/null’ saved [81980]
real 0m0.437s user 0m0.003s sys 0m0.002s
And then notice this....
[egreshko@meimei ~]$ host www.hyblr.com www.hyblr.com has address 111.8.98.138 ;; connection timed out; trying next origin Host www.hyblr.com not found: 3(NXDOMAIN) Host www.hyblr.com not found: 3(NXDOMAIN)
I suspect a DNS configuration issue for that host/domain.
-
baobeileaf -
Ed Greshko -
Juan Orti Alcaine