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
