[CentOS-mirror] Terrible .edu mirror performance

Randy McAnally rsm at fast-serv.com
Sat Sep 25 01:04:55 EDT 2010

> On Sat, Sep 25, 2010 at 11:15 AM, John R. Dennison <jrd at gerdesas.com> wrote:

> This is just a kindergarten-educated guess for my region and totally uninformed and un-educated ones for the neighboring countries. Don't go to the bank with this information.
> For Malaysia, for most of its popular ISPs, the peering is fastest through Singapore, Australia and USA-West Coast.  Frequently, speeds from these mirrors are the fastest.  Yet, Malaysian client-updates are going to a local mirror first (which is very congested), Indonesia next (which is mind-boggling) then Singapore (which should be second-tier) and Australia beign at the bottom.
> Local mirrors here frequently received update requests from clients originating from countries whose ISP peering are somewhat less nominal - Philippines, Vietnam, Cambodia, Thailand, Indonesia and sometimes Bangladesh. Examining the mirrorlist.centos.org shows local mirrors here are being listed in those countries' list at somewhat higher priority compared to those known to be better peered.
> I'd say we need to examine the local peering and advise the mirror-administrators, them whom manage mirrorlist.centos.org to change the order of preference for neighbouring countries mirrors-list.
> Check it out - http://mirrorlist.centos.org/?release=5&arch=x86_64&repo=os&cc=<your country code eg. my>
> Regards

I think we're talking about two issues.  For my issue, I'm getting local mirrors (these EDU mirrors are all in the US with decent latency to our sites).  The problem is that these mirrors are unusable from any location.  Perhaps their little T1 is tapped out or something... I think Tier1 mirror should be 1Gbps uplink or higher...nothing less... most EDU don't have the available bandwidth to be Tier1 any longer as is becoming very clear.

Does anyone on these school campus ever monitor those .EDU mirrors or their own network performance?  Can't we just drop them for the community sake if nobody from their NOC speaks up?

Randy M. 
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