commit 9fb52305ee3109fee730148a7b9ed7dac6913273 parent 0cde7bc6d67d4fd9c69675663aeafb7b878764f4 Author: Mike Perry <mikeperry-git@torproject.org> Date: Thu, 4 Aug 2022 21:23:40 +0000 Add changes file for bug40642. Diffstat:
| A | changes/bug40642 | | | 9 | +++++++++ |
1 file changed, 9 insertions(+), 0 deletions(-)
diff --git a/changes/bug40642 b/changes/bug40642 @@ -0,0 +1,9 @@ + o Major bugfixes (congestion control): + - Implement RFC3742 Limited Slow Start. Congestion control was + overshooting the congestion window during slow start, particularly for + onion service activity. With this fix, we now update the congestion + window more often during slow start, as well as dampen the exponential + growth when the congestion window grows above a capping parameter. + This should reduce the memory increases guard relays were seeing, as + well as allow us to set lower queue limits to defend against + ongoing DoS attacks. Fixes bug 40642; bugfix on 0.4.7.5-alpha.