[CentOS-mirror] This mirror is slow

Bryan Whitehead driver at megahappy.net
Fri Mar 28 20:06:39 UTC 2014

This is from Digital Ocean "San Francisco 1". Subnet is

My download starts off at about 20MB/sec and is quickly slowed down to
about 10k/sec for about 2mins, then it slowly gets back to about 5MB/sec
(just doing a liveCD iso download). I'm also opening up tickets with the
Digital Ocean guys - maybe they are doing something?

Previously I had my own centos mirror in several co-lo's, but funding
issues are causing us to shutdown our co-lo's and switch to hosted.
Maintaining our own mirror is no longer in the budget. When I had my own
mirror I never experienced any slowdown at all - even when pulling across
co-lo's (mirror was not public).

My other theory is disk IO on your mirror might be slow - so unless I'm
hitting hot files that are cached I get bad IO. Example: doing a "yum
groupinstall Additional Development" is particularly bad if gatech mirror
happens to get picked.

On Fri, Mar 28, 2014 at 12:43 PM, Neil Bright <lxmirror at gtlib.gatech.edu>wrote:

> (resending, as it seems I've run afoul of mailing list addresses...)
> On Mar 27, 2014, at 11:49 AM, Neil Bright <neil.bright at oit.gatech.edu>
> wrote:
> > We don't intentionally throttle any of our mirrors.  Of course, we are
> connected to a multitude of different regional and international networks,
> so there could be quite a few factors coming in to play here.
> >
> > Can you provide any more details?  Source IP address, time, etc?
> >
> > On Mar 26, 2014, at 4:27 PM, Bryan Whitehead <driver at megahappy.net>
> wrote:
> >
> >> http://www.gtlib.gatech.edu
> >>
> >> I was doing a yum upgrade on DigitalOcean, this was about 100k/sec.
> >>
> >> So I decided to download an iso from my laptop (comcast business) and
> initially got 3.5MB/sec, but it quickly was reduced to 200k/sec.
> >>
> >> I think some kind of throttling is going on.
> >>
> >> -Bryan
> +======================================================================+
> Neil Bright (ncbright at gatech.edu)                  (404) 385-6954
> http://www.pace.gatech.edu
> 258 Fourth Street, Rich Bldg, Rm 321 / Atlanta, GA  30332-0700
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