gfe-relnote: Ensure the ACK delay is at least the alarm granularity(1ms) when ACK decimation is enabled. Protected by gfe2_reloadable_flag_quic_ack_delay_alarm_granularity.
PiperOrigin-RevId: 290179167
Change-Id: I71fdac347c6e8637a481280b3aa9bb40a96c22df
diff --git a/quic/core/quic_received_packet_manager.cc b/quic/core/quic_received_packet_manager.cc
index 86b060e..9e33ea4 100644
--- a/quic/core/quic_received_packet_manager.cc
+++ b/quic/core/quic_received_packet_manager.cc
@@ -245,6 +245,10 @@
// before sending an ack.
QuicTime::Delta ack_delay = std::min(
local_max_ack_delay_, rtt_stats->min_rtt() * ack_decimation_delay_);
+ if (GetQuicReloadableFlag(quic_ack_delay_alarm_granularity)) {
+ QUIC_RELOADABLE_FLAG_COUNT(quic_ack_delay_alarm_granularity);
+ ack_delay = std::max(ack_delay, kAlarmGranularity);
+ }
if (fast_ack_after_quiescence_ && now - time_of_previous_received_packet_ >
rtt_stats->SmoothedOrInitialRtt()) {
// Ack the first packet out of queiscence faster, because QUIC does
