This one time, at band camp, Michelle Konzack said: > Am 2004-07-19 10:01:06, schrieb Russell Coker: > >On Mon, 19 Jul 2004 05:59, Michelle Konzack <linux4michelle@freenet.de> wrote: > >> >Thinking of the expected 50KB/sec download rate i calculated a > >> >theoretical maximum of ~250 simultaneous downloads -- am i right ? > >> > >> With a 100 MBit NIC you can have a maximum of 7 MByte/sec > > > >What makes you think so? > > > >Other people get >10MB/s. I've benchmarked some of my machines at 9MB/s. > > I do not belive it ! > > Maybe with UDP but not TCP it is not possibel from the protocol. > I have high performanc NIC's and some servers which are killer > but never gotten more as 7,4 MByte/second > > How do you Benchmark ? > Two computers with 2 feet cross-over cable ? > > Maybe you will have zero errors, but in real it does not work. (create large file) steve@hadrian:~$ dd if=/dev/urandom of=public_html/large_file bs=1024 count=50000 50000+0 records in 50000+0 records out (get large file) steve@gashuffer:~$ wget www.lobefin.net/~steve/large_file [...] 22:46:09 (9.61 MB/s) - `large_file' saved [51200000/51200000] Of course, for reasonable sized files (where reasonable is <10MB), I get transfer speeds closer to 11MB/s. YMMV, but it is not a fault of the tcp protocol. Switched 10/100 connection here. Of course real internet travel adds some latency, but that's not the point - the NIC is not the bottleneck, bandwidth is in the OP's question. -- ----------------------------------------------------------------- | ,''`. Stephen Gran | | : :' : sgran@debian.org | | `. `' Debian user, admin, and developer | | `- http://www.debian.org | -----------------------------------------------------------------
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