Gentoo Archives: gentoo-user

From: Harry Putnam <reader@×××××××.com>
To: gentoo-user@l.g.o
Subject: [gentoo-user] [OT] etho app rating 10/100 etc in megabytes
Date: Mon, 21 Feb 2011 23:04:14
Message-Id: 87pqqlq9y2.fsf@newsguy.com
1 I've gotten confused on this problem way too many times.. I'd like to
2 get some definitive starting points.
3
4 When you see net adapters online they are always rated like
5
6 10/100 or 10/100/1000. So how does one turn that notation into
7 megabytes?
8
9 I think those numbers stand for bits, right?
10
11 But still, when I'm trying to measure how much data is moving to a
12 certain directory, and I want to compare it to what the adapter is
13 supposed to do... (in some easy homeboy way).
14
15 I vaguely remember something about 8 bits to a byte or maybe its the
16 other way round...
17
18 My homeboy transfer measurements:
19
20 I measure the incoming MegaBytes as measured with `du' with a while
21 loop interating in settable intervals. So in this case when set to 60
22 seconds,I now the number of megabytes that arrive in 60 seconds but
23 would like to know how to convert that to the other notation.
24
25 I'm seeing between 222 and 237 MB in a full minute being transferred
26 and it seems quite slow for what is supposed to be a gigabyte network.
27
28 This is just across two computers on my home lan, both with gigabyte
29 adapters and they connect thru a gigabyte switch. Or I hope they are.
30
31 My setup looks like this in brief (simplified).
32
33 The transfer is between h4 and h5 (windows XP, windows 7) You'll note
34 there is 10/100 router between the whole lan and the internet.
35
36 Both of the subject machines are set to the 10/100 router as default
37 route. The Gigabyte switch has no address.
38
39 internet
40 |
41 |
42 |
43 (netgear router is lan `default route' <= 10/100*****
44 NETGEAR ROUTER (inside address 192.168.0.20)
45 | | |
46 | | |
47 (192.168.0.5) h1 | h3 (192.168.0.7)
48 |
49 |
50 gigabyte switch
51 | |
52 | |
53 (192.168.0.9) h4 h5 (192.168.0.17)
54
55 So I guess I worked another whole subject into this but really I would
56 like to know how to make the conversion mentioned.
57
58 But also if I should be expecting h4 h5 to be able to use GigaByte
59 transfer speeds.

Replies

Subject Author
[gentoo-user] Re: [OT] etho app rating 10/100 etc in megabytes Harry Putnam <reader@×××××××.com>
Re: [gentoo-user] [OT] etho app rating 10/100 etc in megabytes Adam Carter <adamcarter3@×××××.com>
[gentoo-user] Re: [OT] etho app rating 10/100 etc in megabytes James <wireless@×××××××××××.com>