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authorDimitri Staessens <[email protected]>2022-04-01 21:07:16 +0200
committerSander Vrijders <[email protected]>2022-04-03 18:01:01 +0200
commit6180aa78409627325cbba1a2e751260410cac54f (patch)
tree306ecf26fea85c80b5379b7b4eeac8de589bdb5c /src/lib/CMakeLists.txt
parentccfcc0efcff8b3460a7870541df09d537bfeae8f (diff)
downloadouroboros-6180aa78409627325cbba1a2e751260410cac54f.tar.gz
ouroboros-6180aa78409627325cbba1a2e751260410cac54f.zip
lib: Add support for Linux RTT estimator
This adds the option to use the Round-Trip-Time (RTT) estimation algorithm as it is implemented in the TCP implementation in Linux. It looks like it outperforms the TCP default algorithm, so I enabled this one by default. Also adds the option to change the RTO timeout calculation to include more (or less) than 4 times the mdev (specified as a power of 2. Left the default value to 2 (so, 4 mdevs), but 3 (8 mdevs) gives better results in my tests. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
Diffstat (limited to 'src/lib/CMakeLists.txt')
-rw-r--r--src/lib/CMakeLists.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/lib/CMakeLists.txt b/src/lib/CMakeLists.txt
index 0c327320..4f7d5d18 100644
--- a/src/lib/CMakeLists.txt
+++ b/src/lib/CMakeLists.txt
@@ -196,6 +196,10 @@ set(FRCT_REORDER_QUEUE_SIZE 256 CACHE STRING
"Size of the reordering queue, must be a power of 2")
set(FRCT_START_WINDOW 64 CACHE STRING
"Start window, must be a power of 2")
+set(FRCT_LINUX_RTT_ESTIMATOR TRUE CACHE BOOL
+ "Use Linux RTT estimator formula instead of the TCP RFC formula")
+set(FRCT_RTO_MDEV_MULTIPLIER 2 CACHE STRING
+ "Multiplier for deviation term in the RTO: RTO = sRTT + (mdev << X)")
set(FRCT_RTO_MIN 250 CACHE STRING
"Minimum Retransmission Timeout (RTO) for FRCT (us)")
set(FRCT_TICK_TIME 5000 CACHE STRING