Change Dandelion++ fluff probability to 20%, and embargo timeout to 39s

A 20% fluff probability increases the precision of a spy connected to
every node by 10% on average, compared to a network using 0% fluff
probability. The current value (10% fluff) should increase precision by
~5% compared to baseline.

This decreases the expected stem length from 10 to 5. The embargo
timeout was therefore lowered to 39s; the fifth node in a stem is
expected to have a 90% chance of being the first to timeout, which is
the same probability we currently have with an expected stem length of
10 nodes.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/cryptonote_config.h b/src/cryptonote_config.h
index a4db99f83..278fcbcab 100644
--- a/src/cryptonote_config.h
+++ b/src/cryptonote_config.h
@@ -102,11 +102,11 @@
 
 
 #define CRYPTONOTE_DANDELIONPP_STEMS              2 // number of outgoing stem connections per epoch
-#define CRYPTONOTE_DANDELIONPP_FLUFF_PROBABILITY 10 // out of 100
+#define CRYPTONOTE_DANDELIONPP_FLUFF_PROBABILITY 20 // out of 100
 #define CRYPTONOTE_DANDELIONPP_MIN_EPOCH         10 // minutes
 #define CRYPTONOTE_DANDELIONPP_EPOCH_RANGE       30 // seconds
 #define CRYPTONOTE_DANDELIONPP_FLUSH_AVERAGE      5 // seconds average for poisson distributed fluff flush
-#define CRYPTONOTE_DANDELIONPP_EMBARGO_AVERAGE  173 // seconds (see tx_pool.cpp for more info)
+#define CRYPTONOTE_DANDELIONPP_EMBARGO_AVERAGE   39 // seconds (see tx_pool.cpp for more info)
 
 // see src/cryptonote_protocol/levin_notify.cpp
 #define CRYPTONOTE_NOISE_MIN_EPOCH                      5      // minutes