Michael Gilbert wrote: > during stage 2, the installer runs an "apt-get update", then "apt-get > install mdetect" in rapid succession. some ftp servers, such as > ftp.debian.org, detect this as hammering and block connectivity for > something like 2 minutes. an error message about unable to connect > to server is presented, which is potentially disconcerting to the > user. if not patient, he or she may give up on the install > even though everything is working fine.
I've never heard of this happening before. I was able to reproduce the connection throttling with this frankly abusive command (30 simulantaneous connections), but not if I just ran the commands you mentioned in sequence. And all my command showed me is that ftp.debian.org has a limit of 10 concurrent connections from one ip address; if I change it to run the wgets in series instead of parallell, they all succeed without any throttling. for x in $(seq 1 30); do wget -O /dev/null ftp://ftp.debian.org/debian/dists/unstable/main/binary-i386/Packages.bz2 & ; done Do you have some kind of exceptionally fast internet connection to this ftp server? Or a broken ftp proxy or stateful firewall? Or do you have a whole network behind one ip that is all connecting to it at once or some similar exceptional circumstance? (Note: all tests done on a machine that is 13 hops and ~60 ms away from ftp.debian.org, average throughput is 470k/s.) -- see shy jo
signature.asc
Description: Digital signature
