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Commit c6534e5d authored by Chiachang Wang's avatar Chiachang Wang
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Increase tcp polling interval on data stall detection 

NetworkMonitor suspects stall if we get high tcp fail rate in
10s. In a cell transition frequently environment, a certain
percentage packets lost or retransmission may stay for a longer
time interval. The shorter tcp polling interval may not able to
get confident enough result. The looser timer may also
increase validated result in the metrics which may not a good
signal. Thus, increase the polling interval to address it.

Bug: 157957111
Test: atest NetworkStackTests
Change-Id: I496a32da8f57f88908402722ebe1cd3d0a8483b6
parent 88ab8e2c

src/android/net/util/DataStallUtils.java

+1 −1
Original line number Diff line number Diff line
@@ -96,7 +96,7 @@ public class DataStallUtils { 
    /**

     * Default polling interval to observe the tcp health.

     */

    public static int DEFAULT_TCP_POLLING_INTERVAL_MS = 10_000;

    public static int DEFAULT_TCP_POLLING_INTERVAL_MS = 20_000;



    /**

     * Default tcp packets fail rate to suspect as a data stall.