Been playing with the DAC

[lazarus]

Hi all, Iv been tinkering with stuff and manged to get some results.

These are times are the total for sending and receiving.

Time to send login and get a response from the DAC varies a lot. I'm guessing its all to do with what the traffic is like at the time of the request. The Best time I am seeing is 2.8ms and worst is around 4ms

Once logged in I ask for my usage report. This is quicker as the connection has been made, I am seeing 1.9ms - 2.3ms

Just wondering.. is this the norm? Don't be shy to reply with yours, its only numbers...

 

[Adam H]

You'll probably find this thread interesting , knew id seen people posting them before :

http://www.acorndomains.co.uk/threads/increased-response-times-to-dac-today.133716/#post-522311

 

[lazarus]

Thanks Adam, yes I saw this thread a few days ago

 

[Adam H]

Im not a member but if you want I will ping it from a couple of different servers/locations and tell you what timings i get ? What IP / Address is it.

 

[Adam H]

Using the address in the other thread the best ive got is below so pretty much the same as you i think. I believe that server is based in Reading so fairly close to Nominet . Im just guessing though, i don't even know if that info is helpful

64 bytes from nomfwlp01-reth0-0.nominet.org.uk (213.248.252.2): icmp_seq=20 ttl=59 time=2.26 ms
64 bytes from nomfwlp01-reth0-0.nominet.org.uk (213.248.252.2): icmp_seq=21 ttl=59 time=2.21 ms
64 bytes from nomfwlp01-reth0-0.nominet.org.uk (213.248.252.2): icmp_seq=22 ttl=59 time=2.17 ms
64 bytes from nomfwlp01-reth0-0.nominet.org.uk (213.248.252.2): icmp_seq=23 ttl=59 time=2.14 ms
64 bytes from nomfwlp01-reth0-0.nominet.org.uk (213.248.252.2): icmp_seq=24 ttl=59 time=2.17 ms

 

[lazarus]

Hi Adam the address is dac.nic.uk but ICMP (Ping) is disabled.
A trace route would work..

I am seeing this..

traceroute to dac.nic.uk (213.248.242.37), 30 hops max, 60 byte packets
1 ##.235.225.## (##.235.225.##) 0.275 ms 0.253 ms 0.237 ms
2 dc2nombgprp01-linx.nominet.org.uk (195.66.236.61) 1.018 ms 0.998 ms 0.976 ms
3 * * *
4 * * *

Im getting this ping

64 bytes from nomfwlp01-reth0-0.nominet.org.uk (213.248.252.2): icmp_seq=33 ttl=62 time=1.50 ms
64 bytes from nomfwlp01-reth0-0.nominet.org.uk (213.248.252.2): icmp_seq=34 ttl=62 time=1.56 ms
64 bytes from nomfwlp01-reth0-0.nominet.org.uk (213.248.252.2): icmp_seq=35 ttl=62 time=1.65 ms
64 bytes from nomfwlp01-reth0-0.nominet.org.uk (213.248.252.2): icmp_seq=36 ttl=62 time=1.60 ms

 

[Adam H]

Forget I said that, probably IPtables preventing it. Will try again after dinner

 

[lazarus]

 

[Adam H]

Yeah it was IPtables lol :

traceroute to dac.nic.uk (213.248.242.37), 30 hops max, 60 byte packets
1 95.154.220.1 (95.154.220.1) 1.478 ms 1.555 ms 1.664 ms
2 87.117.211.41 (87.117.211.41) 0.422 ms 0.403 ms 0.374 ms
3 be3.asr01.thn.as20860.net (62.233.127.173) 2.776 ms 2.750 ms 2.719 ms
4 linx.telecityredbus.net (195.66.224.82) 1.338 ms 1.466 ms 1.442 ms
5 194.8.92.6 (194.8.92.6) 2.369 ms 2.384 ms 2.257 ms
6 194.8.92.6 (194.8.92.6) 1.980 ms 1.917 ms 2.070 ms
7 212.111.38.198 (212.111.38.198) 2.161 ms 1.579 ms 1.578 ms


Server located in Reading I believe so just out side London Ring Road

 

[ian]

Pinging Nominet via traceroutes etc only reach the border router for Nominet, so the results are worthless. There is a better method (used plenty of times to investigate which servers/hosts are worth trailing), but I won't be sharing that sorry . Lazarus is using his DAC connection to get responses to his commands which is of course most accurate. I won't comment on his speed of response and I doubt anyone else would either.

Following this thread with interest though.

 

[Adam H]

Ahhhh I make it no secret the world of DAC is something I know nothing about lol. I didnt think anyone else would post numbers either so figured id try and help blindly lol

 

[lazarus]

Thanks Adam !

 

[RobM]

Ping and average times are not the most important things... look at routing and hops

 

[lazarus]

Correction. I have noticed a bug in my code. "or more of how I had converted microseconds to milliseconds to seconds"
DAC Login time is in seconds. DAC query is in milliseconds. Sleep...