This defines the parameters for a delay pool. Each delay pool has
a number of "buckets" associated with it, as explained in the
description of delay_class.
For a class 1 delay pool, the syntax is:
delay_class pool 1
delay_parameters pool aggregate
For a class 2 delay pool:
delay_class pool 2
delay_parameters pool aggregate individual
For a class 3 delay pool:
delay_class pool 3
delay_parameters pool aggregate network individual
For a class 4 delay pool:
delay_class pool 4
delay_parameters pool aggregate network individual user
For a class 5 delay pool:
delay_class pool 5
delay_parameters pool tagrate
The option variables are:
pool a pool number - ie, a number between 1 and the
number specified in delay_pools as used in
delay_class lines.
aggregate the speed limit parameters for the aggregate bucket
(class 1, 2, 3).
individual the speed limit parameters for the individual
buckets (class 2, 3).
network the speed limit parameters for the network buckets
(class 3).
user the speed limit parameters for the user buckets
(class 4).
tagrate the speed limit parameters for the tag buckets
(class 5).
A pair of delay parameters is written restore/maximum, where restore is
the number of bytes (not bits - modem and network speeds are usually
quoted in bits) per second placed into the bucket, and maximum is the
maximum number of bytes which can be in the bucket at any time.
There must be one delay_parameters line for each delay pool.
For example, if delay pool number 1 is a class 2 delay pool as in the
above example, and is being used to strictly limit each host to 64Kbit/sec
(plus overheads), with no overall limit, the line is:
delay_parameters 1 none 8000/8000
Note that 8 x 8K Byte/sec -> 64K bit/sec.
Note that the word 'none' is used to represent no limit.
And, if delay pool number 2 is a class 3 delay pool as in the above
example, and you want to limit it to a total of 256Kbit/sec (strict limit)
with each 8-bit network permitted 64Kbit/sec (strict limit) and each
individual host permitted 4800bit/sec with a bucket maximum size of 64Kbits
to permit a decent web page to be downloaded at a decent speed
(if the network is not being limited due to overuse) but slow down
large downloads more significantly:
delay_parameters 2 32000/32000 8000/8000 600/8000
Note that 8 x 32K Byte/sec -> 256K bit/sec.
8 x 8K Byte/sec -> 64K bit/sec.
8 x 600 Byte/sec -> 4800 bit/sec.
Finally, for a class 4 delay pool as in the example - each user will
be limited to 128Kbits/sec no matter how many workstations they are logged into.:
delay_parameters 4 32000/32000 8000/8000 600/64000 16000/16000
See also delay_class and delay_access.