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Make network multicast breadth/depth parameters configurable on a per-net basis.

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This commit is contained in:
Adam Ierymenko 2013-09-17 16:11:57 -04:00
parent 4c06fcfc9d
commit f9079a110e
7 changed files with 65 additions and 27 deletions
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17
node/Constants.hpp
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@ -233,25 +233,12 @@ error_no_ZT_ARCH_defined;
/**
* Breadth of tree for rumor mill multicast propagation
*/
#define ZT_MULTICAST_PROPAGATION_BREADTH 4
#define ZT_MULTICAST_DEFAULT_PROPAGATION_BREADTH 3
/**
* Depth of tree for rumor mill multicast propagation
*
* The maximum number of peers who can receive a multicast is equal to
* the sum of BREADTH^i where I is from 1 to DEPTH. This ignores the effect
* of the rate limiting algorithm or bloom filter collisions.
*
* 5 results in a max of 1364 recipients for a given multicast. With a limit
* of 50 bytes/sec (average) for multicast, this results in a worst case of
* around 68kb/sec of multicast traffic. FYI the average multicast traffic
* from a Mac seems to be about ~25bytes/sec. Windows measurements are TBD.
* Linux is quieter than Mac.
*
* This are eventually going to become per-network tunable parameters, along
* with per-network peer multicast rate limits.
*/
#define ZT_MULTICAST_PROPAGATION_DEPTH 5
#define ZT_MULTICAST_DEFAULT_PROPAGATION_DEPTH 6
/**
* Length of ring buffer history of recent multicast packets