[CentOS-mirror] Terrible .edu mirror performance

Maulvi Bakar maulvi at maulvi.net
Sat Sep 25 00:48:40 EDT 2010

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

> On Fri, Sep 24, 2010 at 09:58:59PM -0400, Randy McAnally wrote:
> > Anyone else seeing dismal speeds from multiple .edu mirrors?  Over the
> past
> > few days?  Several .edu mirrors over the past week have been running at
> > 3kB/sec - 50kB/sec forcing me to have to clean my yum cache just to get
> > through the update process.  Latest .edu offender at 3kB/sec is
> > mirror.vcu.edu.  Even yum thinks it's a fast mirror for some reason.
>         vcu.edu has been attrocious for quite some time now; in fact
>        I've had it blocked from various colo'd boxes since at least
>        August 1st.
>                                                        John
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>

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