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Back off a little on multicast propagation depth. Eventually this will be a network parameter.

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This commit is contained in:
Adam Ierymenko 2013-08-08 12:55:01 -04:00
parent 5cabb60a6f
commit 95c0790a88
1 changed files with 9 additions and 2 deletions
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11
node/Constants.hpp
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@ -226,9 +226,16 @@ error_no_ZT_ARCH_defined;
* the sum of BREADTH^i where I is from 1 to DEPTH. This ignores the effect * 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. * of the rate limiting algorithm or bloom filter collisions.
* *
* 7 results in a max of 21844 recipients for a given multicast. * 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 7 #define ZT_MULTICAST_PROPAGATION_DEPTH 5
/** /**
* Length of ring buffer history of recent multicast packets * Length of ring buffer history of recent multicast packets