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netem: Fix 'reorder' section of man page 

The syntax used in the example on reordering in the manpage is inconsistent with
the usage syntax.  Moreover, the text does not describe the reordering process
in the kernel correctly. This patch fixes these two issues.

Signed-off-by: Vijay Subramanian <subramanian.vijay@gmail.com>
This commit is contained in:
Vijay Subramanian 2012-01-23 22:08:52 -08:00 committed by Stephen Hemminger
parent 0bdb83cd70
commit e330c1853d
1 changed files with 14 additions and 6 deletions
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20
man/man8/tc-netem.8
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@ -112,19 +112,27 @@ using this option the chosen percent of packets is duplicated before queuing
them. It is also possible to add a correlation through the proper parameter.
.SS reorder
there are two ways to use this option:
to use reordering, a delay option must be specified. There are two ways to use
this option (assuming 'delay 10ms' in the options list).
.B "reorder gap"
.I 5 10
.B "reorder "
.I 25% 50%
.B "gap"
.I 5
.br
in this first example every 5th (10th, 15th) packet is sent immediately while
other packets are delayed by 10 ms
in this first example, the first 4 (gap - 1) packets are delayed by 10ms and
subsequent packets are sent immediately with a probability of 0.25 (with
correlation of 50% ) or delayed with a probability of 0.75. After a packet is
reordered, the process restarts i.e. the next 4 packets are delayed and
subsequent packets are sent immediately or delayed based on reordering
probability. To cause a repeatable pattern where every 5th packet is reordered
reliably, a reorder probability of 100% can be used.
.B reorder
.I 25% 50%
.br
in this second example 25% of packets are sent immediately (with correlation of
50%) while the other are delayed by 10 ms.
50%) while the others are delayed by 10 ms.
.SS rate
delay packets based on packet size and is a replacement for