[asterisk-users] Server response time

[Juan C. Villa]

Gordon,

Thank you very much for the detailed insights! I really appreciate it. I'm gonna test drive a server in Germany today. The main reason for choosing a server in Germany is COST ($65 vs $200).

Thanks!


-
Juan C. Villa
Computer Engineering
Georgia Institute of Technology
juanqui at gatech.edu
(404)441-9653


----- Original Message -----
From: Gordon Henderson
[mailto:gordon+asterisk at drogon.net]
To: Asterisk Users Mailing List -
Non-Commercial Discussion [mailto:asterisk-users at lists.digium.com]
Sent:
Tue, 02 Mar 2010 00:52:51 -0800
Subject: Re: [asterisk-users] Server
response time


> On Mon, 1 Mar 2010, Juan C. Villa wrote:
> 
> > On 2/28/2010 10:21 AM, Gordon Henderson wrote:
> >> On Sun, 28 Feb 2010, Juan C. Villa wrote:
> >>
> >>> Hey Guys,
> >>>
> >>> I am considering leasing a new server in Germany to run my Asterisk
> >>> infrastructure and I was wondering how response time would affect the
> >>> performance of the system. Right now I have a response time of around
> >>> 60-70ms with my server in California. The server in Germany would have a
> >>> response time of around 140ms (both ways). My DID/Termination providers
> >>> are in Canada and the USA, and all my voip boxes are also in the USA.
> >>> Any suggestions or recommendations?
> >>>
> >> Being based in the UK, I'd say why not the UK rather then Germany - we're
> >> closer to the US after-all :)
> >>
> >> However, one thing we don't know: Where are you and your customers based?
> >>
> >> I also find it odd that a lot of people UK based still think they can get
> >> better deals (cheaper&  more b/w) by hosting in the US rather than in the
> >> UK - so I'm curious as to why you'd want to host outside the US...
> >>
> >> But as long as you're not passing media then anywhere you have good
> >> connectivity ought to work - however if you are passing media, then I'd
> be
> >> concerned that someone in California is calling their neighbour and the
> >> data is going all the way to Germany and back again... That really will
> be
> >> noticeable...
> >>
> >
> > In response to Gordon: Hetzner offers the best dedicated server deal I
> > have every seen. I have been a Cari.net client for  over a year now, but
> > I am needing a more powerful server and I don't want to pay $200+ a
> > month for it. Hetzner has a connection to the Level 3 network that
> > recently installed a transoceanic fiber optic link with a lag of less
> > than 40 ms.
> 
> You're not going to get much better than 40ms each way from NY to Europe 
> because as Scotty would say: Ye canny break the laws o' physics! (Actually 
> light in fibre takes 26.1ms according to Wolfram alpha but London to NY 
> has been ~40ms each way since as long as I've been involved with that 
> stuff (mid 90's)
> 
> And most big ISPs in europe now connect to Level3 - e.g. the co-lo I use 
> in deepest darkest england (nowhere near London, although we do have Gb to 
> London) has a ping time like:
> 
>    gordon @ unicorn: ping -q -c10 www.nyiix.net
>    PING ns3.nyiix.net (209.137.140.21) 56(84) bytes of data.
> 
>    --- ns3.nyiix.net ping statistics ---
>    10 packets transmitted, 10 received, 0% packet loss, time 9009ms
>    rtt min/avg/max/mdev = 78.865/79.947/86.082/2.079 ms
> 
> It goes via L3 and that's probably not the best end-point, but it's close 
> enough, and ~40ms each way.
> 
> > The total lag from Germany to USA (2 way) is around ~110ms (Just tested
> > it today). Who this cause any issues with my VoIP applications? Right
> > now I have two VoIP boxes installed in Switzerland which are connected
> > to my server in California (avg response time = 190ms) and I have no
> > problems at all. What would you guys advice?
> 
> So are you passing data, or just signalling? If data, then why? (Although 
> I guess you're actually terminating to the PSTN in those countries?) But 
> as you already have servers in Switzerland, why can't you use those to run 
> some extended tests, and work it out for yourself?
> 
> Personally, I'd not even think about servers in another country unless I 
> had good reason to - and good "remote hands"/support, etc. and a 
> requirement to plumb in to the local PSTN - either directly or via a local 
> VoIP carrier - and even then, if it's via a local VoIP carrier - why not 
> just connect directly to them from 'home' rather than put a box over 
> there.
> 
> But I if you already have servers in .ch which you indicate you're happy 
> with, then I guess you do have good reason to have them there, so since 
> .de is just up the road from .ch, then if you're happy with the ISP/co-lo 
> then go for it...
> 
> Do make sure the facility has multiple carrier ISPs though - if L3 does go 
> down (and no-ones perfect), you still need a way to get to it - L3 isn't 
> the only backhaul ISP with trans-atlantic links - get the co-lo's AS 
> number and see who they're peering with using the various 'whois' tools, 
> etc.
> 
> Good luck!
> 
> Gordon
> 
> -- 
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