Date: Sat, 03 Sep 2005 10:56:57 +0300 From: Rein Kadastik <wigry@uninet.ee> Cc: freebsd-questions@freebsd.org Subject: Re: network tools Message-ID: <43195749.6050707@uninet.ee> In-Reply-To: <20050903011442.GA18339@osiris.chen.org.nz> References: <4318D9E4.1000808@childeric.freeserve.co.uk> <20050903011442.GA18339@osiris.chen.org.nz>
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Jonathan Chen wrote: >On Sat, Sep 03, 2005 at 12:01:56AM +0100, Chris wrote: > >[...] > > >>Today I had a download running at about 60kB/s and he said his (XP >>based) limewire was showing 25kB/s download and 5kB/s upload. When he >>turned off limewire my download speed went back to 120k. >> >>Why don't the numbers support the experience? We have 1Mb/s download and >>128K upload (telewest cable). In theory even between us we weren't using >>all the bandwidth. >> >> > >You're getting pretty close to maximum possible speed there on your >connection. A 1Mbit/s connection is about 128KByte/s, which would >explain your ftp download speedometer reading. Allowing for TCP >overhead, you're getting pretty good throughput. > > > I have one suspicion here. The Limwire does not show the actual speed but the speed that is available for the program. What I mean is that the Limwire protocol might create extra overhead and that explains "lost" bandwith (for example for transferring 5 KB data it must create 6 KB TCP packets but program sees that 5KB data is transferred). Rein
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