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commit 9fb52305ee3109fee730148a7b9ed7dac6913273 Author: Mike Perry mikeperry-git@torproject.org AuthorDate: Thu Aug 4 21:23:40 2022 +0000
Add changes file for bug40642. --- changes/bug40642 | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/changes/bug40642 b/changes/bug40642 new file mode 100644 index 0000000000..f50d87e031 --- /dev/null +++ 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.