[mirror-admin] IITM Mirror, India.

[Matt Domsch]

On Fri, Mar 27, 2009 at 07:20:37PM +0530, Prof. P. Sriram wrote:
> On Fri, 27 Mar 2009, susmit shannigrahi wrote:
> [about ftp.iitm.ac.in mirror giving 503 service not available errors]
> 
> > From my experience, I can assure it is affecting most of the clients
> > from India. That is why I posted this here.
> 
> wow! you have access to the response codes received by most of the clients
> countrywide? and i thought i had to be running webalizer or something on
> the server end to do this ... :-)
> 
> ftp.iitm.ac.in is a heavily used mirror and there is no other such service
> (yet) anywhere else in india. however, we do have only finite bandwidth
> and i have to put some limits on usage so the resource is meaningful. for
> example, there is a bandwidth cap and there is also a connection limit,
> currently 10-20 mbps (depending on network usage by other users on campus)  
> and 100 connections. we are running at or near the connection limit most
> of the time, so lots of users will get 503 messages. we are recording
> about 10 million hits a month and about half of these are getting 503's.
> if i increase the connection limit, sure, we will get fewer 503's, but
> download speeds will go down for all users - to below dialup speed. if 
> there is collective wisdom that this is preferable, i will consider 
> changing this.

No, what you have is fine.  Yum fails over to the next mirror.

We are fortunate to have 2 mirrors in India; Ubuntu has only one
listed (IITM), while openSUSE lists none.

I do note that in MM, the IITM mirror is listed as having 45Mbit/sec
serving capability, while GLUG-NITH is listed at 25.  This means users
will be sent to IITM nearly twice as often as GLUG-NITH.  But, per
Prof. Sriram, his actual bandwidth cap is at most 20Mbits/sec.  I've
lowered this value in the MM database to 20 (will take effect in about
an hour), which should more evenly balance the external user load
between these two mirrors (local users still get directed locally).


Thank you both for your continued contribution to Fedora, and the
Linux community in India.

-Matt
Fedora Mirror Wrangler

-- 
Matt Domsch
Linux Technology Strategist, Dell Office of the CTO
linux.dell.com & www.dell.com/linux

--