Hi guys, We’ve got quite an extensive set of smokeping targets, if it helps, here: https://smokey.custdc.net/
We also provide some Transit to 4D, so please do let me know if any of the issues you see appear within our AS 50300 Cheers, Robert Williams Custodian Data Centres https://www.CustodianDC.com From: uknof <[email protected]> On Behalf Of Alfie Pates Sent: 14 October 2018 23:10 To: [email protected] Subject: Re: [uknof] TI Sparkle latency issues? I’ve been seeing some unusual latencies recently too; can you share some graphs and I’ll compare with mine! - A On Sun, Oct 14, 2018, at 9:22 PM, Chris Malton wrote: > Hi all, > > I've been diagnosing a load of issues with a client service recently, > and part of that's led to adding Smokeping for literally everything. > > Alas, that's turned up rather more than I had expected it to - some of > which doesn't appear to be in my control or my DC's control or my > client's control either - and it's skewing some of the measurements! > > Of an evening, and at weekends (i.e. peak time internet usage) for at > least the last week or so, I've been seeing very high latency on round > trips from my rack in 4D in Gatwick to destinations in JISC/JaNET. That > seems to be the only affected route for me, but is the only one via TI > Sparkle that I've currently found. There's a little bit of packet loss > in the mix as well (~0.1%), but nothing I'm immediately concerned about. > > I've dug more into this over this weekend, and have identified that > AS6762 appears to be where the issues lie - specifically, the moment > traffic hits TI Sparkle's LINX router (2001:7f8:4::1a6a:1) I see an > 80-90ms latency increase at peak times. > > Is anyone else seeing high latency on routes via TI Sparkle across Linx > and/or is there a friendly contact at TI Sparkle I can discuss this > with? (Separately, I've asked 4D to peer directly with JISC on LINX - > but that might take some time to get sorted) > > Thanks in advance. > > Regards, > > Chris Malton > >
