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Network Statistics Tools

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cmd:Unix command

Basic Info

Usage

netselect -vv -s 999 host(s)...

Info

Choose the fastest server automatically

Source

was at http://www.worldvisions.ca/~apenwarr/netselect/index.html

Description

an ultrafast intelligent parallelizing binary-search implementation of "ping." You give it a (possibly very long) list of servers, and it chooses the fastest/closest one automatically. It's good for finding the fastest ftp.debian.org mirror, the least laggy IRC server, or the best Squid neighbour.

Tag: interface::commandline, network::scanner, role::sw:utility, use::downloading === Help

Quick Help

Usage: netselect [-v|-vv|-vvv] [-m max_ttl] [-s servers] [-t min_tries] host …

$ netselect -vv -s 999 ftp.fceia.unr.edu.ar ftp.kulnet.kuleuven.ac.be ftp.cdrom.com ftp.debian.org ftp.de.debian.org

Running netselect to choose 999 out of 5 addresses.

ftp.fceia.unr.edu.ar                  9999 ms  30 hops    0% ok
ftp.kulnet.kuleuven.ac.be             9999 ms  30 hops    0% ok
ftp.debian.org                          27 ms  15 hops   90% ok ( 9/10) [   75]
ftp.de.debian.org                      140 ms  20 hops   90% ok ( 9/10) [  465]
ftp.cdrom.com                         9999 ms  30 hops    0% ok
   75 ftp.debian.org
  465 ftp.de.debian.org

Detail Help

-vv    Very verbose mode.  Displays nameserver resolution  and  statis-
       tics (not just scores) to STDERR and STDOUT.

-s SERVERS
       Print  this  many  "top-scoring" SERVERS at the end of the list.
       If SERVERS is 0, then this disables printing of high scores.

-m HOPS
       Maximum TTL (time to live).  Don't accept hosts that are further
       than HOPS away.

Alternative to netselect

http://thread.gmane.org/gmane.linux.debian.user/294440

Newsgroups: gmane.linux.debian.user
Date: 2007-06-22

I had been able to use netselect before. When I tried it again just now, all sites end up with "9999 ms 30 hops 0% ok".

I'm wondering why netselect fails on me. My understanding is that netselect uses ping, but ping works fine for me, but traceroute not. That means netselect actually depends on traceroute?

As more and more settings don't allow traceroute to go through, is there any alternatives to netselect?