[CentOS-mirror] Terrible .edu mirror performance

Jim Kusznir

jkusznir at gmail.com
Mon Sep 27 19:59:49 UTC 2010


RE: edu bandwidth:

I run centos.eecs.wsu.edu, and I do watch the university's bandwidth.
I know that these days most universities have huge pipes, and we're
actually in the "smaller" catagory, as we only have an OC-12
(622Mbps), although local management is working to upgrade this.

That said, my mirror will max out well before our bandwidth.  My
mirror is also a Ubuntu mirror, and when 10.04 was released, the
entire university's bandwidth went up by a third, and that was me
serving.  I was pushing about 40Mbps out of my box, and that limit was
hardware related (like many mirror servers, this hardware is second
rate).

If you're looking for an awesome mirror, check out
mirror.its.uidaho.edu  These guys have a very solid server, and gobs
of bandwidth (more than WSU), and fewer users.  Local cablemodem users
(there's no direct peering) reguarly report 20Mbps transfer rates --
the cablemodem cap's.

So, if you test to uidaho and still have poor performance, there's
probably some trauma happening on the internet.  I know our
performance on campus to off campus was pretty bad a few days ago, and
apparently that was traced to a backbone provider's misconfigured
router that caused good portions of the US backbones to get bogged
down.

So, my suggestion: try mirror.its.uidaho.edu; if it still is poor
performance (as well as several other .edu), then its probably a
larger-scale Internet problem, not an .edu problem...give it a few
days and it should iron out.

--Jim

On Sat, Sep 25, 2010 at 1:27 PM, Tru Huynh <tru at centos.org> wrote:
> On Sat, Sep 25, 2010 at 08:45:00AM +0600, Bangladeshi CentOS Mirror Maintainer [BD-SERVERS.NET] wrote:
>> Hello All
>>
>> I support Randy M, my mirror is mirrors.bd-servers.net has multiple
>> address, that's not the issue, issue is the machine itself update any
>> rpm via yum, it always choose .au mirrors!
>
> [tru at woodstock ~]$ geoiplookup BD-SERVERS.NET
> GeoIP Country Edition: CA, Canada
> GeoIP City Edition, Rev 1: CA, BC, Kelowna, v1y9x1, 49.900002, -119.483299, 0, 0
> [tru at woodstock ~]$ host BD-SERVERS.NET
> BD-SERVERS.NET has address 69.10.136.107
> BD-SERVERS.NET mail is handled by 0 BD-SERVERS.NET.
> [tru at woodstock ~]$ host  bauani.org
> bauani.org has address 69.10.136.107
> bauani.org has IPv6 address 2001:470:9f54::3
> bauani.org mail is handled by 0 mail.bauani.org.
>
> Maybe our geoip db is out of date...
>
>>
>> Other box in same subnet, also choose most  of the time .au mirror. So
>> I have to change the yum.conf of all CentOS box to use
>> mirrors.bd-servers.net. More funny thing is from mirror access log, I
>> found most of request is coming from India, Pakistan, Nepal etc. Few
>> Bangladeshi IP also shows up, but it is too low in numbers. I think
>> the problem is on fastmirror plugin.
> [tru at woodstock ~]$ host mirrors.bd-servers.net
> mirrors.bd-servers.net has address 175.158.99.139
> mirrors.bd-servers.net has address 180.211.221.26
> mirrors.bd-servers.net has address 175.158.99.141
> mirrors.bd-servers.net has address 175.158.99.140
> mirrors.bd-servers.net has IPv6 address 2403:1200::2
> [tru at woodstock ~]$ geoiplookup mirrors.bd-servers.net
> GeoIP Country Edition: BD, Bangladesh
> [tru at woodstock ~]$ geoiplookup 175.158.99.139
> GeoIP Country Edition: BD, Bangladesh
> [tru at woodstock ~]$ geoiplookup 180.211.221.26
> GeoIP Country Edition: BD, Bangladesh
> [tru at woodstock ~]$ geoiplookup 175.158.99.141
> GeoIP Country Edition: BD, Bangladesh
> [tru at woodstock ~]$ geoiplookup 175.158.99.140
> GeoIP Country Edition: BD, Bangladesh
> [tru at woodstock ~]$
>
> Tru
> --
> Tru Huynh (mirrors, CentOS-3 i386/x86_64 Package Maintenance)
> http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBEFA581B
>
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