Hello Andrea, Those results are incredible !!!
I've been able to get BitTorrent installed and have successfully setup the SEED. Am going to see if I can reproduce your amazing results and share with you some of our own statistics. Might I ask how many SEEDS are SEEDING the image? Our image is a bit larger at 7.1GB (although when compressed in the tarball to generate the torrent it is only 2.5GB) Thank you for the very well informed reply. Jason Andrea Righi wrote: > Jason, > > I've used the bittorrent transport to install 100 nodes of a cluster > that we've in production (in CINECA) and results were great, both in > terms of performance and reliability. > > In terms of performance I was able to install all the 100 nodes (with a > RHEL4 of 2GB) in 4min!!! The nodes are IBM blades LS21 with 2 dual-core > AMD processors (4 cores/node) 2.4GHz and a Broadcom NetXtreme II > BCM5706S Gigabit network card. > > I repeated the test also using 50 and 15 nodes. In all the cases I > always installed all the nodes in 4min. So for these numbers we've a > perfect scalability. I hope to be able to repeat the tests using also > more than 100 clients at the same time... > > With rsync I needed 13mins to install 50 clients. With more than 50 > clients my image server is in pain, it starts to swap and some clients > fail the installation. With more than 50 clients at the same time rsync > becomes unusable. > > Also using multicast the scalability (obviously) is perfect, but the > overhead of udpcast is quite big and to install 50 clients I needed > 16mins (in particular - I suppose - this is due to the transmission of > the redundant data, in order to reduce the probability to loose a packet). > > So, also in terms of reliability bittorrent seems to be the best choice > for massive installations. > > Anyway, I've all the logs and I got some statistics from my tests (also > regarding the badnwidth usage on the clients). We're writing an article > with other systemimager/oscar developers, so I hope the detailed results > of the experiments, with some graphics, etc, etc. will be available ASAP... > > Regarding your problem it seems that you've not a bittorrent client > installed on your image server. Theoretically all the standard > bittorrent clients included in all the distros are supported, for my > tests I'm using BitTorrent-4.4.0 (or BitTorrent-4.2.0-1 in RHEL4). If > there is not a client included in your distro you can download the > package from here: > > http://download.bittorrent.com/dl/?M=D > > Regards, > -Andrea > > Jason Knudsen wrote: > >> Morning everyone, >> >> I'm interested in any advice / information that anyone has gathered >> while using the Bittorrent method for image deployment? Does the speed >> of the image transfer significantly increase if using X amount of seeds >> etc...? Has anybody done the numbers? >> >> I'm thinking of trying it out, however the documentation is a bit vague >> at http://wiki.sisuite.org/SystemImager/BitTorrent >> >> I'm not entirely too certain how I make my server into a SEED? While >> starting the service I get this error: >> >> Starting SystemImager's BitTorrent Transport: >> systemimager-server-bittorrent... failed. >> Cannot find a valid tracker binary. >> >> Any information on the subject would be appreciated, >> >> Jason >> >> > > ------------------------------------------------------------------------- > Using Tomcat but need to do more? Need to support web services, security? > Get stuff done quickly with pre-integrated technology to make your job easier > Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo > http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 > _______________________________________________ > Sisuite-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/sisuite-users > > ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Sisuite-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/sisuite-users
