diff --git a/platform/smRunner/src/com/intellij/execution/testframework/sm/runner/SMTestProxy.java b/platform/smRunner/src/com/intellij/execution/testframework/sm/runner/SMTestProxy.java
index eb9c3eb4984b..7a72f80f1e00 100644
--- a/platform/smRunner/src/com/intellij/execution/testframework/sm/runner/SMTestProxy.java
+++ b/platform/smRunner/src/com/intellij/execution/testframework/sm/runner/SMTestProxy.java
@@ -386,8 +386,10 @@ public class SMTestProxy extends AbstractTestProxy {
   public String getDurationString(TestConsoleProperties consoleProperties) {
     switch (getMagnitudeInfo()) {
       case PASSED_INDEX:
-      case RUNNING_INDEX:
         return !isSubjectToHide(consoleProperties) ? getDurationString() : null;
+      case RUNNING_INDEX:
+        // pad duration with zeros, like "1m 02 s 003 ms" to avoid annoying flickering
+        return !isSubjectToHide(consoleProperties) ? getDurationPaddedString() : null;
       case COMPLETE_INDEX:
       case FAILED_INDEX:
       case ERROR_INDEX:
@@ -408,6 +410,10 @@ public class SMTestProxy extends AbstractTestProxy {
     final Long duration = getDuration();
     return duration != null ? StringUtil.formatDuration(duration.longValue(), "\u2009") : null;
   }
+  private String getDurationPaddedString() {
+    final Long duration = getDuration();
+    return duration != null ? StringUtil.formatDurationPadded(duration.longValue(), "\u2009") : null;
+  }
 
   @Override
   public boolean shouldSkipRootNodeForExport() {
diff --git a/platform/util/src/com/intellij/openapi/util/text/StringUtil.java b/platform/util/src/com/intellij/openapi/util/text/StringUtil.java
index 4de60ba37b4c..02cbceff490d 100644
--- a/platform/util/src/com/intellij/openapi/util/text/StringUtil.java
+++ b/platform/util/src/com/intellij/openapi/util/text/StringUtil.java
@@ -1591,8 +1591,8 @@ public class StringUtil extends StringUtilRt {
     return formatDuration(duration, " ");
   }
 
-  private static final String[] TIME_UNITS = {"ms", "s", "m", "h", "d", "mo", "yr", "c", "ml", "ep"};
-  private static final long[] TIME_MULTIPLIERS = {1, 1000, 60, 60, 24, 30, 12, 100, 10, 10000};
+  private static final String[] TIME_UNITS = {"ms", "s", "m", "h", "d"};
+  private static final long[] TIME_MULTIPLIERS = {1, 1000, 60, 60, 24};
 
   /** Formats given duration as a sum of time units (example: {@code formatDuration(123456, "") = "2m 3s 456ms"}). */
   @NotNull
@@ -1647,6 +1647,36 @@ public class StringUtil extends StringUtilRt {
     return result.toString();
   }
 
+  private static final String[] PADDED_FORMATS = {"%03d", "%02d", "%02d", "%02d", "%d"};
+  /**
+   * Formats 234523598 like "2 d 03 h 11 min 04 sec 004 ms" padded accordingly with zeros except the most significant unit, e.g. "days" here.
+   */
+  @NotNull
+  @Contract(pure = true)
+  public static String formatDurationPadded(long millis, @NotNull String unitSeparator) {
+    StringBuilder result = new StringBuilder();
+
+    long millisIn = 1;
+    int i;
+    for (i=1; i < TIME_MULTIPLIERS.length; i++) {
+      long multiplier = TIME_MULTIPLIERS[i];
+      millisIn *= multiplier;
+      if (millis < millisIn) {
+        break;
+      }
+    }
+    long d = millis;
+    for (i-=1; i >= 0; i--) {
+      long multiplier = i==TIME_MULTIPLIERS.length-1 ? 1 : TIME_MULTIPLIERS[i+1];
+      millisIn /= multiplier;
+      long value = d / millisIn;
+      d = d % millisIn;
+      String format = result.length() == 0 ? "%d" : PADDED_FORMATS[i]; // do not pad the most significant unit
+      if (result.length() != 0) result.append(" ");
+      result.append(String.format(format, value)).append(unitSeparator).append(TIME_UNITS[i]);
+    }
+    return result.toString();
+  }
   /**
    * Formats given duration as a sum of time units with at most two units
    * (example: {@code formatDuration(123456, "") = "2m 3s"}).
diff --git a/platform/util/testSrc/com/intellij/util/text/StringUtilTest.java b/platform/util/testSrc/com/intellij/util/text/StringUtilTest.java
index 14c191cdf18c..289c69db6b72 100644
--- a/platform/util/testSrc/com/intellij/util/text/StringUtilTest.java
+++ b/platform/util/testSrc/com/intellij/util/text/StringUtilTest.java
@@ -22,6 +22,7 @@ import java.nio.CharBuffer;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
+import java.util.concurrent.TimeUnit;
 
 import static java.util.Collections.singletonList;
 import static org.junit.Assert.*;
@@ -564,7 +565,7 @@ public class StringUtilTest {
     assertEquals("0 ms", StringUtil.formatDuration(0));
     assertEquals("1 ms", StringUtil.formatDuration(1));
     assertEquals("24 d 20 h 31 m 23 s 647 ms", StringUtil.formatDuration(Integer.MAX_VALUE));
-    assertEquals("29 ep 6533 ml 3 c 8 yr 9 mo 17 d 7 h 12 m 55 s 807 ms", StringUtil.formatDuration(Long.MAX_VALUE));
+    assertEquals("82 d 17 h 24 m 43 s 647 ms", StringUtil.formatDuration(Integer.MAX_VALUE+5000000000L));
 
     assertEquals("1 m 0 s 100 ms", StringUtil.formatDuration(60100));
 
@@ -576,7 +577,7 @@ public class StringUtilTest {
     assertEquals("1 d 10 h 17 m 36 s 789 ms", StringUtil.formatDuration(123456789));
     assertEquals("14 d 6 h 56 m 7 s 890 ms", StringUtil.formatDuration(1234567890));
 
-    assertEquals("1 yr 1 mo 1 d 1 h 1 m 1 s 1 ms", StringUtil.formatDuration(33786061001L));
+    assertEquals("39 d 2 h 30 m 6 s 101 ms", StringUtil.formatDuration(3378606101L));
   }
 
   @Test
@@ -588,7 +589,18 @@ public class StringUtilTest {
     assertEquals("1 h 1 m", StringUtil.formatDurationApproximate(3659009));
     assertEquals("2 h", StringUtil.formatDurationApproximate(7199000));
     assertEquals("1 d", StringUtil.formatDurationApproximate((23 * 60 * 60 + 59 * 60 + 59) * 1000L));
-    assertEquals("1 yr 1 mo", StringUtil.formatDurationApproximate(33786061001L));
+    assertEquals("391 d 1 h", StringUtil.formatDurationApproximate(33786061001L));
+  }
+
+  @Test
+  public void testFormatDurationPadded() {
+    assertEquals("0 ms", StringUtil.formatDurationPadded(0, " "));
+    assertEquals("1 s 000 ms", StringUtil.formatDurationPadded(1000, " "));
+    assertEquals("1 s 001 ms", StringUtil.formatDurationPadded(1001, " "));
+    assertEquals("2 m 00 s 000 ms", StringUtil.formatDurationPadded(TimeUnit.MINUTES.toMillis(2), " "));
+    assertEquals("2 h 00 m 00 s 000 ms", StringUtil.formatDurationPadded(TimeUnit.HOURS.toMillis(2), " "));
+    assertEquals("2 d 00 h 00 m 00 s 000 ms", StringUtil.formatDurationPadded(TimeUnit.DAYS.toMillis(2), " "));
+    assertEquals("1434852 d 16 h 13 m 50 s 987 ms", StringUtil.formatDurationPadded(123971271230987L, " "));
   }
 
   @Test