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chris
2002-04-01 23:27:50 +00:00
parent 791919c8a0
commit f20c980274
1 changed files with 10 additions and 10 deletions
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iftop.8
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@@ -49,13 +49,13 @@ slow?
When running, \fBiftop\fP uses the whole screen to display network usage. At When running, \fBiftop\fP uses the whole screen to display network usage. At
the top of the display is a reminder of keys which control \fBiftop\fP in the top of the display is a reminder of keys which control \fBiftop\fP in
operation. Below that is a logarithmic scale for the `bar chart' visual display operation. Below that is a logarithmic scale for the bar graph which gives a
of traffic. visual indication of traffic.
The main part of the display lists, for each pair of hosts, the rate at which The main part of the display lists, for each pair of hosts, the rate at which
data has been sent and received over the preceding 2, 10 and 40 second data has been sent and received over the preceding 2, 10 and 40 second
intervals. The direction of data flow is indicated by arrows, <= and =>. In intervals. The direction of data flow is indicated by arrows, <= and =>. For
addition, a simple bar graph shows the 10s average. For instance, instance,
.nf .nf
foo.example.com => bar.example.com 1K 500b 100b foo.example.com => bar.example.com 1K 500b 100b
@@ -67,8 +67,8 @@ shows, on the first line, traffic from \fBfoo.example.com\fP to
\fBbar.example.com\fP; in the preceding 2 seconds, this averaged 1Kbit/s, \fBbar.example.com\fP; in the preceding 2 seconds, this averaged 1Kbit/s,
around half that amount over the preceding 10s, and a fifth of that over the around half that amount over the preceding 10s, and a fifth of that over the
whole of the last 40s. During each of those intervals, the data sent in the whole of the last 40s. During each of those intervals, the data sent in the
other direction was about 2Mbin/s. On the actual display, part of each line other direction was about 2Mbit/s. On the actual display, part of each line
would be inverted to give a visual indication of the 10s average of traffic. is inverted to give a visual indication of the 10s average of traffic.
You might expect to see something like this where host \fBfoo\fP is making You might expect to see something like this where host \fBfoo\fP is making
repeated HTTP requests to \fBbar\fP, which is sending data back which saturates repeated HTTP requests to \fBbar\fP, which is sending data back which saturates
a 2Mbit/s link. a 2Mbit/s link.
@@ -87,10 +87,10 @@ total: 3.1K TX: 0.3M peaks: 64b totals: 64b 30b 10b
The first column of numbers shows the total rate of received plus transmitted The first column of numbers shows the total rate of received plus transmitted
traffic over the last 2s, and its peak value over the past 40s. The next column traffic over the last 2s, and its peak value over the past 40s. The next column
shows the total amount of traffic observed during this session, shows the total amount of traffic observed during this session,
\fIin bytes, not bits\fP. The next column shows the peaks in received and transmitted \fIin bytes, not bits\fP. The next column shows the peaks in received and
traffic, and the remaining colums show the 2, 10 and 40 second averages. As transmitted traffic, and the remaining colums show the 2, 10 and 40 second
with the per-host displays, the top line shows transmitted and the bottom line averages. As with the per-host displays, the top line shows transmitted and the
received traffic. bottom line received traffic.
.SH OPTIONS .SH OPTIONS