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Commit d3f689bf authored by Jeff Sharkey's avatar Jeff Sharkey
Browse files

Switch over to new "time.android.com" NTP pool. 

Also add logging to measure success/failure details.

Test: builds, boots, and NTP fix obtained
Bug: 32969463
Change-Id: I66a8a78480e087acdcf8a11e79f80b7a7a4969c9
parent 72b84a23

Android.mk

+1 −0
Original line number Diff line number Diff line
@@ -45,6 +45,7 @@ LOCAL_SRC_FILES += \ 
       core/java/android/app/admin/SecurityLogTags.logtags \

       core/java/android/content/EventLogTags.logtags \

       core/java/android/speech/tts/EventLogTags.logtags \

       core/java/android/net/EventLogTags.logtags \

       core/java/android/webkit/EventLogTags.logtags \

       core/java/com/android/internal/logging/EventLogTags.logtags \

core/java/android/net/EventLogTags.logtags

0 → 100644
+6 −0
Original line number Diff line number Diff line 
# See system/core/logcat/event.logtags for a description of the format of this file.



option java_package android.net



50080 ntp_success (server|3),(rtt|2),(offset|2)

50081 ntp_failure (server|3),(msg|3)

core/java/android/net/SntpClient.java

+4 −2
Original line number Diff line number Diff line
@@ -36,8 +36,7 @@ import java.util.Arrays; 
 * }

 * </pre>

 */

public class SntpClient

{

public class SntpClient {

    private static final String TAG = "SntpClient";

    private static final boolean DBG = true;
@@ -88,6 +87,7 @@ public class SntpClient 
        try {

            address = InetAddress.getByName(host);

        } catch (Exception e) {

            EventLogTags.writeNtpFailure(host, e.toString());

            if (DBG) Log.d(TAG, "request time failed: " + e);

            return false;

        }
@@ -142,6 +142,7 @@ public class SntpClient 
            //             = (transit + skew - transit + skew)/2

            //             = (2 * skew)/2 = skew

            long clockOffset = ((receiveTime - originateTime) + (transmitTime - responseTime))/2;

            EventLogTags.writeNtpSuccess(address.toString(), roundTripTime, clockOffset);

            if (DBG) {

                Log.d(TAG, "round trip: " + roundTripTime + "ms, " +

                        "clock offset: " + clockOffset + "ms");
@@ -153,6 +154,7 @@ public class SntpClient 
            mNtpTimeReference = responseTicks;

            mRoundTripTime = roundTripTime;

        } catch (Exception e) {

            EventLogTags.writeNtpFailure(address.toString(), e.toString());

            if (DBG) Log.d(TAG, "request time failed: " + e);

            return false;

        } finally {

core/res/res/values/config.xml

+1 −1
Original line number Diff line number Diff line
@@ -1650,7 +1650,7 @@ 
    <bool name="config_actionMenuItemAllCaps">true</bool>



    <!-- Remote server that can provide NTP responses. -->

    <string translatable="false" name="config_ntpServer">2.android.pool.ntp.org</string>

    <string translatable="false" name="config_ntpServer">time.android.com</string>

    <!-- Normal polling frequency in milliseconds -->

    <integer name="config_ntpPollingInterval">86400000</integer>

    <!-- Try-again polling interval in milliseconds, in case the network request failed -->