On Sat, Dec 15, 2007 at 03:43:22PM +0100, Josip Rodin wrote:
> At the same time, I should just get off my ass and go find the resolving
> code in the applications (apt-get, rsync, ...), and then just run it to see
> how it works...
I edited apt's methods/connect.cc:Connect() function after the line
saying "struct addrinfo *CurHost = LastHostAddr;" to do:
char hbuf[NI_MAXHOST], sbuf[NI_MAXSERV];
getnameinfo( CurHost->ai_addr, CurHost->ai_addrlen,
hbuf, sizeof(hbuf),
sbuf, sizeof(sbuf),
NI_NUMERICHOST );
char *msg;
sprintf(msg, "\nUsing IP address: %s, with service %s\n", hbuf, sbuf);
return _error->Error( msg );
Then I ran it with a minimal sources.list file including only security.d.o:
% for i in $(seq 1 30); do LD_LIBRARY_PATH=bin bin/apt-get -o
"Dir::Etc::SourceList=$PWD/sources.list" -o "Dir::State::Lists=$PWD/foo" -o
"Dir::Bin::Methods=$PWD/bin/methods" update 2>/dev/null | grep Using | sort -u;
done | cut -d: -f2 | cut -d, -f1 | sort | uniq -c | sort -n
8 212.211.132.32
10 212.211.132.250
12 128.31.0.36
% for i in $(seq 1 30); do LD_LIBRARY_PATH=bin bin/apt-get -o
"Dir::Etc::SourceList=$PWD/sources.list" -o "Dir::State::Lists=$PWD/foo" -o
"Dir::Bin::Methods=$PWD/bin/methods" update 2>/dev/null | grep Using | sort -u;
done | cut -d: -f2 | cut -d, -f1 | sort | uniq -c | sort -n
7 128.31.0.36
11 212.211.132.250
12 212.211.132.32
% for i in $(seq 1 30); do LD_LIBRARY_PATH=bin bin/apt-get -o
"Dir::Etc::SourceList=$PWD/sources.list" -o "Dir::State::Lists=$PWD/foo" -o
"Dir::Bin::Methods=$PWD/bin/methods" update 2>/dev/null | grep Using | sort -u;
done | cut -d: -f2 | cut -d, -f1 | sort | uniq -c | sort -n
6 212.211.132.32
10 212.211.132.250
14 128.31.0.36
% for i in $(seq 1 30); do LD_LIBRARY_PATH=bin bin/apt-get -o
"Dir::Etc::SourceList=$PWD/sources.list" -o "Dir::State::Lists=$PWD/foo" -o
"Dir::Bin::Methods=$PWD/bin/methods" update 2>/dev/null | grep Using | sort -u;
done | cut -d: -f2 | cut -d, -f1 | sort | uniq -c | sort -n
7 128.31.0.36
11 212.211.132.32
12 212.211.132.250
% for i in $(seq 1 30); do LD_LIBRARY_PATH=bin bin/apt-get -o
"Dir::Etc::SourceList=$PWD/sources.list" -o "Dir::State::Lists=$PWD/foo" -o
"Dir::Bin::Methods=$PWD/bin/methods" update 2>/dev/null | grep Using | sort -u;
done | cut -d: -f2 | cut -d, -f1 | sort | uniq -c | sort -n
8 212.211.132.250
11 128.31.0.36
11 212.211.132.32
Screwy... let's try a larger sample:
% for i in $(seq 1 99); do LD_LIBRARY_PATH=bin bin/apt-get -o
"Dir::Etc::SourceList=$PWD/sources.list" -o "Dir::State::Lists=$PWD/foo" -o
"Dir::Bin::Methods=$PWD/bin/methods" update 2>/dev/null | grep Using | sort -u;
done | cut -d: -f2 | cut -d, -f1 | sort | uniq -c | sort -n
30 212.211.132.250
33 212.211.132.32
36 128.31.0.36
% for i in $(seq 1 99); do LD_LIBRARY_PATH=bin bin/apt-get -o
"Dir::Etc::SourceList=$PWD/sources.list" -o "Dir::State::Lists=$PWD/foo" -o
"Dir::Bin::Methods=$PWD/bin/methods" update 2>/dev/null | grep Using | sort -u;
done | cut -d: -f2 | cut -d, -f1 | sort | uniq -c | sort -n
27 212.211.132.250
34 212.211.132.32
38 128.31.0.36
% for i in $(seq 1 99); do LD_LIBRARY_PATH=bin bin/apt-get -o
"Dir::Etc::SourceList=$PWD/sources.list" -o "Dir::State::Lists=$PWD/foo" -o
"Dir::Bin::Methods=$PWD/bin/methods" update 2>/dev/null | grep Using | sort -u;
done | cut -d: -f2 | cut -d, -f1 | sort | uniq -c | sort -n
32 212.211.132.250
33 128.31.0.36
34 212.211.132.32
% for i in $(seq 1 99); do LD_LIBRARY_PATH=bin bin/apt-get -o
"Dir::Etc::SourceList=$PWD/sources.list" -o "Dir::State::Lists=$PWD/foo" -o
"Dir::Bin::Methods=$PWD/bin/methods" update 2>/dev/null | grep Using | sort -u;
done | cut -d: -f2 | cut -d, -f1 | sort | uniq -c | sort -n
30 212.211.132.250
32 212.211.132.32
37 128.31.0.36
% for i in $(seq 1 99); do LD_LIBRARY_PATH=bin bin/apt-get -o
"Dir::Etc::SourceList=$PWD/sources.list" -o "Dir::State::Lists=$PWD/foo" -o
"Dir::Bin::Methods=$PWD/bin/methods" update 2>/dev/null | grep Using | sort -u;
done | cut -d: -f2 | cut -d, -f1 | sort | uniq -c | sort -n
31 212.211.132.32
32 212.211.132.250
36 128.31.0.36
That's a bit less screwy, although it's a bit more consistently tilting in
the direction of steffani.
On that note, let me update that other bit:
> Right now, with a small sample of just some 110 minutes, the machine eth0s
> have been averaging:
> * villa: 4.69 MB/s
> * lobos: 4.08 MB/s
> * steffani: 15.14 MB/s
After around 11 hours, we've had:
* villa 4.29 MB/s
* lobos 3.91 MB/s
* steffani 14.86 MB/s
That would be 64% for steffani... :/
--
2. That which causes joy or happiness.
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