Hi all!
I''m testing my new DNS server mounted on a domU in my home LAN and
I''ve
noticed a import delay in the time response for the host in my LAN
(domUs and non domUs), but the response time of external hosts is
minimum.
viper@marian:~$ ping -c5 debian
PING ws1.daninet (192.168.1.5) 56(84) bytes of data.
64 bytes from 192.168.1.5: icmp_seq=1 ttl=64 time=0.187 ms
64 bytes from 192.168.1.5: icmp_seq=2 ttl=64 time=0.146 ms
64 bytes from 192.168.1.5: icmp_seq=3 ttl=64 time=0.156 ms
64 bytes from 192.168.1.5: icmp_seq=4 ttl=64 time=0.197 ms
64 bytes from 192.168.1.5: icmp_seq=5 ttl=64 time=0.140 ms
- --- ws1.daninet ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 20014ms
^^^^^^^
rtt min/avg/max/mdev = 0.140/0.165/0.197/0.024 ms
viper@marian:~$ ping -c5 yahoo.com
PING yahoo.com (66.94.234.13) 56(84) bytes of data.
64 bytes from w2.rc.vip.scd.yahoo.com (66.94.234.13): icmp_seq=1 ttl=52 time=212
ms
64 bytes from w2.rc.vip.scd.yahoo.com (66.94.234.13): icmp_seq=2 ttl=51 time=212
ms
64 bytes from w2.rc.vip.scd.yahoo.com (66.94.234.13): icmp_seq=3 ttl=50 time=212
ms
64 bytes from w2.rc.vip.scd.yahoo.com (66.94.234.13): icmp_seq=4 ttl=51 time=213
ms
64 bytes from w2.rc.vip.scd.yahoo.com (66.94.234.13): icmp_seq=5 ttl=50 time=213
ms
--- yahoo.com ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4016ms
^^^^^^
rtt min/avg/max/mdev = 212.161/213.056/213.980/0.872 ms
viper@marian:~$ dig debian.daninet
; <<>> DiG 9.4.2 <<>> debian.daninet
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 39161
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;debian.daninet. IN A
;; ANSWER SECTION:
debian.daninet. 3600 IN CNAME ws1.daninet.
ws1.daninet. 3600 IN A 192.168.1.5
;; AUTHORITY SECTION:
daninet. 3600 IN NS ns1.daninet.
;; Query time: 3 msec
;; SERVER: 192.168.1.6#53(192.168.1.6)
;; WHEN: Mon Dec 10 19:40:17 2007
;; MSG SIZE rcvd: 84
This behavior can be due to DNS server is mounted on a domU?
Thanks in advance.
Regards,
Daniel
--
Daniel Bareiro - System Administrator
Fingerprint: BFB3 08D6 B4D1 31B2 72B9 29CE 6696 BF1B 14E6 1D37
Powered by Debian GNU/Linux Etch - Linux user #188.598
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Daniel Bareiro schrieb:> Hi all! > > I''m testing my new DNS server mounted on a domU in my home LAN and I''ve > noticed a import delay in the time response for the host in my LAN > (domUs and non domUs), but the response time of external hosts is > minimum.Hi, try to disable transmission checksum on you domU''s NIC domU# ethtool -K eth0 tx off and see if this solves your issue. Regards, Stephan> viper@marian:~$ ping -c5 debian > PING ws1.daninet (192.168.1.5) 56(84) bytes of data. > 64 bytes from 192.168.1.5: icmp_seq=1 ttl=64 time=0.187 ms > 64 bytes from 192.168.1.5: icmp_seq=2 ttl=64 time=0.146 ms > 64 bytes from 192.168.1.5: icmp_seq=3 ttl=64 time=0.156 ms > 64 bytes from 192.168.1.5: icmp_seq=4 ttl=64 time=0.197 ms > 64 bytes from 192.168.1.5: icmp_seq=5 ttl=64 time=0.140 ms > > - --- ws1.daninet ping statistics --- > 5 packets transmitted, 5 received, 0% packet loss, time 20014ms > ^^^^^^^ > > rtt min/avg/max/mdev = 0.140/0.165/0.197/0.024 ms > > > viper@marian:~$ ping -c5 yahoo.com > PING yahoo.com (66.94.234.13) 56(84) bytes of data. > 64 bytes from w2.rc.vip.scd.yahoo.com (66.94.234.13): icmp_seq=1 ttl=52 time=212 ms > 64 bytes from w2.rc.vip.scd.yahoo.com (66.94.234.13): icmp_seq=2 ttl=51 time=212 ms > 64 bytes from w2.rc.vip.scd.yahoo.com (66.94.234.13): icmp_seq=3 ttl=50 time=212 ms > 64 bytes from w2.rc.vip.scd.yahoo.com (66.94.234.13): icmp_seq=4 ttl=51 time=213 ms > 64 bytes from w2.rc.vip.scd.yahoo.com (66.94.234.13): icmp_seq=5 ttl=50 time=213 ms > > --- yahoo.com ping statistics --- > 5 packets transmitted, 5 received, 0% packet loss, time 4016ms > ^^^^^^ > rtt min/avg/max/mdev = 212.161/213.056/213.980/0.872 ms > > viper@marian:~$ dig debian.daninet > > ; <<>> DiG 9.4.2 <<>> debian.daninet > ;; global options: printcmd > ;; Got answer: > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 39161 > ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 1, ADDITIONAL: 0 > > ;; QUESTION SECTION: > ;debian.daninet. IN A > > ;; ANSWER SECTION: > debian.daninet. 3600 IN CNAME ws1.daninet. > ws1.daninet. 3600 IN A 192.168.1.5 > > ;; AUTHORITY SECTION: > daninet. 3600 IN NS ns1.daninet. > > ;; Query time: 3 msec > ;; SERVER: 192.168.1.6#53(192.168.1.6) > ;; WHEN: Mon Dec 10 19:40:17 2007 > ;; MSG SIZE rcvd: 84 > > This behavior can be due to DNS server is mounted on a domU? > > Thanks in advance. > > Regards, > Daniel > > > ------------------------------------------------------------------------ > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users-- Stephan Seitz Senior System Administrator *netz-haut* e.K. multimediale kommunikation zweierweg 22 97074 würzburg fon: +49 931 2876247 fax: +49 931 2876248 web: www.netz-haut.de <http://www.netz-haut.de/> registriergericht: amtsgericht würzburg, hra 5054 _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Sunday, 16 December 2007 20:58:03 +0100, Stephan Seitz wrote:> > I''m testing my new DNS server mounted on a domU in my home LAN and > > I''ve noticed a important delay in the time response for the host in > > my LAN (domUs and non domUs), but the response time of external > > hosts is minimum.> Hi,Hi Stephan. Thanks for your response.> try to disable transmission checksum on you domU''s NIC > > domU# ethtool -K eth0 tx off > > and see if this solves your issue.I''ve Tried your suggestion but it doesn''t work :-( Regards, Daniel -- Daniel Bareiro - System Administrator Fingerprint: BFB3 08D6 B4D1 31B2 72B9 29CE 6696 BF1B 14E6 1D37 Powered by Debian GNU/Linux Etch - Linux user #188.598 _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Daniel Bareiro schrieb:> Hi all! > > I''m testing my new DNS server mounted on a domU in my home LAN and I''ve > noticed a import delay in the time response for the host in my LAN > (domUs and non domUs), but the response time of external hosts is > minimum. > > viper@marian:~$ ping -c5 debian > PING ws1.daninet (192.168.1.5) 56(84) bytes of data. > 64 bytes from 192.168.1.5: icmp_seq=1 ttl=64 time=0.187 ms > 64 bytes from 192.168.1.5: icmp_seq=2 ttl=64 time=0.146 ms > 64 bytes from 192.168.1.5: icmp_seq=3 ttl=64 time=0.156 ms > 64 bytes from 192.168.1.5: icmp_seq=4 ttl=64 time=0.197 ms > 64 bytes from 192.168.1.5: icmp_seq=5 ttl=64 time=0.140 ms > > - --- ws1.daninet ping statistics --- > 5 packets transmitted, 5 received, 0% packet loss, time 20014ms > ^^^^^^^ > > rtt min/avg/max/mdev = 0.140/0.165/0.197/0.024 ms > > > viper@marian:~$ ping -c5 yahoo.com > PING yahoo.com (66.94.234.13) 56(84) bytes of data. > 64 bytes from w2.rc.vip.scd.yahoo.com (66.94.234.13): icmp_seq=1 ttl=52 time=212 ms > 64 bytes from w2.rc.vip.scd.yahoo.com (66.94.234.13): icmp_seq=2 ttl=51 time=212 ms > 64 bytes from w2.rc.vip.scd.yahoo.com (66.94.234.13): icmp_seq=3 ttl=50 time=212 ms > 64 bytes from w2.rc.vip.scd.yahoo.com (66.94.234.13): icmp_seq=4 ttl=51 time=213 ms > 64 bytes from w2.rc.vip.scd.yahoo.com (66.94.234.13): icmp_seq=5 ttl=50 time=213 ms > > --- yahoo.com ping statistics --- > 5 packets transmitted, 5 received, 0% packet loss, time 4016ms > ^^^^^^ > rtt min/avg/max/mdev = 212.161/213.056/213.980/0.872 ms > > viper@marian:~$ dig debian.daninet > > ; <<>> DiG 9.4.2 <<>> debian.daninet > ;; global options: printcmd > ;; Got answer: > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 39161 > ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 1, ADDITIONAL: 0 > > ;; QUESTION SECTION: > ;debian.daninet. IN A > > ;; ANSWER SECTION: > debian.daninet. 3600 IN CNAME ws1.daninet. > ws1.daninet. 3600 IN A 192.168.1.5 > > ;; AUTHORITY SECTION: > daninet. 3600 IN NS ns1.daninet. > > ;; Query time: 3 msec > ;; SERVER: 192.168.1.6#53(192.168.1.6) > ;; WHEN: Mon Dec 10 19:40:17 2007 > ;; MSG SIZE rcvd: 84 > > This behavior can be due to DNS server is mounted on a domU? > > Thanks in advance. > > Regards, > Daniel >Hello Daniel, first you should ping to IP-Addresses to 192.168.1.6 and 192.168.1.5 without any name resolution. There is ab big delay, but your responsetime seems to be lower than 0.2 ms. it seems to be a problem with dns configuration. Georg _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Monday, 17 December 2007 19:55:52 +0100, Georg Fleckenstein wrote:>> I''m testing my new DNS server mounted on a domU in my home LAN and >> I''ve noticed a important delay in the time response for the host in >> my LAN (domUs and non domUs), but the response time of external hosts >> is minimum.>> [...]>> This behavior can be due to DNS server is mounted on a domU?> Hello Daniel,Hi Georg. Thanks for your response.> first you should ping to IP-Addresses to 192.168.1.6 and 192.168.1.5 > without any name resolution.> There is ab big delay, but your responsetime seems to be lower than > 0.2 ms. it seems to be a problem with dns configuration.Mmmmm... you''re right. Ping using IP-address doesn''t show a big delay. But It only is in my workstation. The rest of the machines of my LAN doesn''t present it, but the network configuration in my workstation seems correct :-S I will continue investigating. Regards, Daniel -- Daniel Bareiro - System Administrator Fingerprint: BFB3 08D6 B4D1 31B2 72B9 29CE 6696 BF1B 14E6 1D37 Powered by Debian GNU/Linux Etch - Linux user #188.598 _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users