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Thread ID: 83799	2007-10-13 23:44:00	can my LAN go faster?	supersi (8401)	Press F1

Post ID	Timestamp	Content	User
601135	2007-10-13 23:44:00	I have an XP Pro laptop with a Broadcom NetXtreme Gigabit NIC and a Vista Ultimate PC with a NVidia Nforce NIC networked thru a Dynasys 4 port adsl modem/router. The best file transfer speed I seem to get is 4.88mb per second. Given that between them they are at least 10/100 NIC's I thought I should be able to get more than 5% of their speed out of them. Can I? How?	supersi (8401)
601136	2007-10-14 00:02:00	I'm not entirely sure so don't take my word for it but I would think its being throttled by hard drive write speeds ie. your computers hard drive can only write as fast as 4.88mb/s so the network wont send data any faster then that.	kLOTTiS (7106)
601137	2007-10-14 00:09:00	Ahh, no. HDD write speeds are just slightly faster that 5mbit per second. I'll leave someone else to answer your question, but I can assure you it's nothing at all to do with HDD write speeds. :lol:	wratterus (105)
601138	2007-10-14 00:14:00	My notebook has a 5400rpm 2.5" drive and my PC has a 320gb 7200rpm Seagate 3.5" sata drive. I don't know what the I/O stats are though for these drives.	supersi (8401)
601139	2007-10-14 00:30:00	Several things can slow down transfer rates, Antivirus software can be scanning as the data comes through, data collisions slowing down. Try looking at these sites Here (www.petri.co.il) & Here (www.ads-links.com), Both have several suggestions. May help. Update Extra: As a comparison I just transfered a 1 Gb Approx File from my WHS to a Vista PC, 5400 rpm drives on both, 10/100 network, topped out at 7.78 MB/sec Router is a TP-Link, running through 2 x Xnet Switches along the way.	wainuitech (129)
601140	2007-10-14 00:33:00	My notebook has a 5400rpm 2 . 5" drive and my PC has a 320gb 7200rpm Seagate 3 . 5" sata drive . I don't know what the I/O stats are though for these drives . 2 . 5 inches at 5 . 4krpm is about the same search time as the larger but faster disk . . so that's not the problem either . It's an "area covered" thing that works out algebraically, and not intuitively . There are clocks and events involved that I know of, but will wait for a more concise explanation . It will be here soon, just watch .	SurferJoe46 (51)
601141	2007-10-14 01:27:00	random thought here. but are your nic's working at full or half duplex. as half dulex will allow half bandwidth for up and half for down i think. and full duplex allows full speed both ways. have a play and see what happens.	Cho (12330)
601142	2007-10-14 01:30:00	Your LAN will transfer files at a speed determined by the speed of the slowest element of the network . And you won't get file transfers at the speed of the slowest element, because there are overheads in the software, and the Ethernet protocol needs some "dead" time . You'll never get one Gb/second . You will usually get a better speed than 4 . 88 millibits/sec . ;) (m means milli -- one thousandth . The abbreviation for million is M) . 4 . 88 Mbps would probably be considered reasonable in a standard 10 Mbps network . If all the network interfaces can work in duplex (computer . howstuffworks . com/ethernet15 . htm) you could get better speeds . It's most likely that the choke point is the modem router/switch, probably working at 10 Mbps . Check its settings . The other interfaces will probably "autonegotiate" .	Graham L (2)
601143	2007-10-14 02:37:00	Your LAN will transfer files at a speed determined by the speed of the slowest element of the network . And you won't get file transfers at the speed of the slowest element, because there are overheads in the software, and the Ethernet protocol needs some "dead" time . You'll never get one Gb/second . You will usually get a better speed than 4 . 88 millibits/sec . ;) (m means milli -- one thousandth . The abbreviation for million is M) . 4 . 88 Mbps would probably be considered reasonable in a standard 10 Mbps network . If all the network interfaces can work in duplex (computer . howstuffworks . com/ethernet15 . htm) you could get better speeds . It's most likely that the choke point is the modem router/switch, probably working at 10 Mbps . Check its settings . The other interfaces will probably "autonegotiate" . Let me take this a slight wink OT . . . Graham . . . . what if the overhead of the OPSYS is the only chokepoint for transfer speeds, all else being equal? What I'd like to learn is if . . . say . . . one puter running XP and one running a smaller footprinted OPSYS like 98SE or Mepis, for instance, then what would you say the problem would be and would the smaller and less bloated OPSYS have any measurable speed advantage for file transfer?	SurferJoe46 (51)
601144	2007-10-14 03:15:00	Make sure all the duplex settings are the same. sometimes having mixed settings can make it worse than just running at the slowest link, for best results set everything to full duplex 100mbit. that should give you the fastest connection I also notice that in some advanced NIC settings (particularly Nforce) there is an option to optimise for either CPU or Throughput. Set this at throughput (will result is slightly higher CPU usage) if you optimise for CPU, transfer rates will be horrible	Agent_24 (57)
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