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authorDimitri Staessens <dimitri@ouroboros.rocks>2020-12-16 20:28:03 +0100
committerDimitri Staessens <dimitri@ouroboros.rocks>2020-12-16 20:28:03 +0100
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content: Some fixes in congestion blog post
Diffstat (limited to 'content/en/blog/news')
-rw-r--r--content/en/blog/news/20201212-congestion-avoidance.md16
1 files changed, 8 insertions, 8 deletions
diff --git a/content/en/blog/news/20201212-congestion-avoidance.md b/content/en/blog/news/20201212-congestion-avoidance.md
index 3f3b083..f395a4f 100644
--- a/content/en/blog/news/20201212-congestion-avoidance.md
+++ b/content/en/blog/news/20201212-congestion-avoidance.md
@@ -148,16 +148,16 @@ The algorithm is based on the workings of DataCenter TCP
(DCTCP). Before I dig into the details, I will list the main
differences, without any judgement.
-* The rates for additive increase and slow start are the same
- _constant_ for all flows (but could be made configurable for each
- network layer if needed). This is achieved by having a window that
- is independent of the Round-Trip Time (RTT). This may make it more
- fair, as congestion avoidance in DCTCP (and in most -- if not all --
- TCP variants), is biased in favor of flows with smaller RTT[^1].
+* The rate for additive increase is the same _constant_ for all flows
+ (but could be made configurable for each network layer if
+ needed). This is achieved by having a window that is independent of
+ the Round-Trip Time (RTT). This may make it more fair, as congestion
+ avoidance in DCTCP (and in most -- if not all -- TCP variants), is
+ biased in favor of flows with smaller RTT[^1].
* Because it is operating at the _flow_ level, it estimates the
_actual_ bandwidth sent, including retransmissions, ACKs and what
- not from protocols operating on the flow. DCTCP estimates bandwith
+ not from protocols operating on the flow. DCTCP estimates bandwidth
based on which data offsets are acknowledged.
* The algorithm uses 8 bits to indicate the queue depth in each
@@ -188,7 +188,7 @@ outgoing queue depth. The current minimum queue depth to trigger and
ECN is 16 packets (implemented as a bit shift of the queue size when
writing a packet). We perform a logical OR with the previous value of
the packet. If the width of the ECN field would be a single bit, this
-operation would be identical.
+operation would be identical to DCTCP.
At the _receiver_ side, the context maintains two state variables.