[mirrorbrain] Re: Problem with your system??

Hi Michael,

thanks for the detailed report. I see the problem. The thing is, GU is a small country without mirrors, and MirrorBrain doesn’t know that it is better connected to US mirrors than to Asian/Australian mirrors. MirrorBrain looks for mirrors in the same country first (there aren’t any in Guam), then in the continent (Ocenania has a few, but they are slow, as you mention), so it falls back to geographic coordinates, which yields the mirrors in Japan, Australia, New Zealand, which are not well connected to Guam, too.

A fix is possible. However, I can’t add it in software, but it needs to be added by operators of mirror networks, i.e. administrators running MirrorBrain on their origin/redirecting server. 

-> Dear Hostmaster at TDF, please add ‚gu‘ to the otherCountries field to some US mirrors, especially those which Micheal recommends. (This is done using the ‚mb edit <mirrorname>‘ command.

I think that for special cases like this it would be good to hardcode the „knowledge“ into MirrorBrain, or at least offer some standard settings as a default. It’s just a matter of (per-mirror-) configuration, you see. 

Best,
Peter
PS. One of those countries I never heard of. I entered „Guam“ into my maps app this morning, saw an island. Zoomed out, zoomed out, zoomed out, .. and was amazed. Wonderful! That’s why MirrorBrain exists!

PPS. In the past, I configured a few German mirrors (which are usually well reachable) for similar cases.
otherCountries : dk,pl il,tr,vn ao,bf,bi,bj,bv,cd,cf,cg,ci,cm,cv,dj,dz,eg,eh,er,et,ga,gh,gm,gn,gq,gw,hm,ke,km,lr,ly,ma,mg,ml,mr,mu,mw,mz,ne,ng,re,rw,sc,sd,sh,sl,sn,so,st,td,tf,tg,tn,tz,ug,yt,za,zm,zw a2 ge,kz,ru

PPS. There seems to be good connectivity from most places to the US, and to Germany, but it is wrong to assume that remote countries have good reachability to their neighbour countries. The South African countries are a good example that I studied in some detail. That’s why mirror selection by geographic distance can always only be some fallback mechanism with varying mileage. 


> Am 15.02.2016 um 06:58 schrieb Michael D. Setzer II <mikes_at_kuentos.guam.net>:
> 
> In Guam, going to the LibreOffice site to download the latest version, the 
> automatic process shows mirros in au, nz, and jp as being closest, but the 
> connection speeds really really suck. Reports over 1 hour to download. 
> Manually, pickin a US site, download happens in about 1 minute or 60 times 
> faster. The local ISP has setup the site to look like a US site, since that  is 
> where the bigger pipes from Guam go. While physically AU, NZ and JP are 
> closer the traffic seems to have to go to the US anyway to then go the the 
> closer locations. 
> 
> Its a pain to have to manually pick mirrors, and on some sites, that isn't an 
> option. 
> 
> 
> Mirrors
> 
> List of best mirrors for IP address 204.44.191.62, located at 
> 13.444300,144.786301 in Guam (GU), network 204.44.188.0/22 
> (autonomous system 3605).
> 
> Map showing the closest mirrors
> Found 2 mirrors in other countries, but same continent (OC)
> 
> 
> http://mirror.aarnet.edu.au/pub/tdf/libreoffice/stable/5.1.0/rpm/x86_64/LibreOf
> fice_5.1.0_Linux_x86-64_rpm.tar.gz (au, prio 100)
> 
> http://www.ftp.ne.jp/office/tdf/libreoffice/stable/5.1.0/rpm/x86_64/LibreOffice_
> 5.1.0_Linux_x86-64_rpm.tar.gz (au, prio 100)
> 
> Using the default it reports and hour, but manually selecting wayne.edu it 
> takes about 1 minute??
> 
> +----------------------------------------------------------+
>  Michael D. Setzer II -  Computer Science Instructor      
>  Guam Community College  Computer Center                  
>  mailto:mikes_at_kuentos.guam.net                            
>  mailto:msetzerii_at_gmail.com
>  Guam - Where America's Day Begins                        
>  G4L Disk Imaging Project maintainer 
>  http://sourceforge.net/projects/g4l/
> +----------------------------------------------------------+
> 
> http://setiathome.berkeley.edu (Original)
> Number of Seti Units Returned:  19,471
> Processing time:  32 years, 290 days, 12 hours, 58 minutes
> (Total Hours: 287,489)
> 
> BOINC_at_HOME CREDITS
> ABC         16613838.513356   |   EINSTEIN    87525353.785695
> ROSETTA     40117323.878181   |   SETI        74413803.416125
> 


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