On 2013-11-20 13:56:09, Carsten Otto wrote: > ftp2.de.debian.org reporting in :) Hi! Sorry for the immensely late response, but I got caught up on other things. :) > On Wed, Nov 20, 2013 at 01:31:00PM -0500, anarcat wrote: >> Munin/Cacti graph of the disk usage from an existing mirror for the last >> year would be awesome here, for example. > > Debian [...] That's exactly what I was looking for, thanks!!! Out of curiosity, which hardware are you using to host this? a dedicated server? something with a SAN behind? >> Bandwidth for updates >> ===================== >> >> It is unclear how much data is transfered on a daily or (ideally) >> monthly basis for updates to the archive. I found a graph which seem >> to show the size transfered varies between 2 and 15 GB on a daily basis, >> but that data is old (2012-08-12) and it's hard to get a good idea of >> what it actually means - what's the average, for example? Or better, >> what's the 95th percentile? > > The red lines (rsync) correspond to downloads we actively do using rsync > (after being triggered). > > http://ftp.halifax.rwth-aachen.de/~cotto/rrd/debian-backports%23month.png > http://ftp.halifax.rwth-aachen.de/~cotto/rrd/debian-cd%23month.png > http://ftp.halifax.rwth-aachen.de/~cotto/rrd/debian-volatile%23month.png > http://ftp.halifax.rwth-aachen.de/~cotto/rrd/debian%23month.png > > The graphical representation is not too helpful, but I also have the > corresponding raw (Java-)RRD data. Just message me if you need something. It would be great to have a 95th percentile of that red line, actually. One of the things I am wondering is if it is worthwhile to keep a private mirror running for clusters that have lots of machines and want to spare the bandwidth costs yet do not want to offer the public hosting commitment... >> Bandwidth for users >> =================== >> >> I assume this is the hardest part to figure out, as this will vary >> wildly according to the region you're in and the relative popularity of >> your mirror. >> >> The official mirror page states that you need a "T1 or better" (for >> the record and those who weren't around in those days, a T1 is >> 1.5Mbit/s). I hardly think this requirement is fit for a public mirror >> these days. :) The official page does mention this requirement is >> "higher" for "developped countries", but fails to clarify that >> requirement. > > Have a look at the graphs above. With 51 MBit/sec on average, Debian is > not very demanding (although we're not ftp.de.debian.org, just ftp2). I would consider 50mbps a respectable usage. :) I'm curious to see what kind of pain ftp.de is suffering... ;) Thank you so much for this again (and everyone else that answered!), it's great to see those graphs. A. -- L'art n'est pas un bureau d'anthropométrie. - Léo Ferré, "Préface"
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