diff --git a/idea/performanceTests/test/org/jetbrains/kotlin/idea/perf/Stats.kt b/idea/performanceTests/test/org/jetbrains/kotlin/idea/perf/Stats.kt
index d5df7367d17..60039ae27c2 100644
--- a/idea/performanceTests/test/org/jetbrains/kotlin/idea/perf/Stats.kt
+++ b/idea/performanceTests/test/org/jetbrains/kotlin/idea/perf/Stats.kt
@@ -49,7 +49,7 @@ class Stats(
 
         metricChildren.add(
             Metric(
-                "", metricValue = calcMean.mean.toLong(),
+                "_value", metricValue = calcMean.mean.toLong(),
                 hasError = hasError,
                 metricError = calcMean.stdDev.toLong(),
                 rawMetrics = rawMetricChildren
@@ -318,7 +318,7 @@ class Stats(
         phaseName: String,
         profilerConfig: ProfilerConfig
     ): PhaseProfiler {
-        profilerConfig.name = "$testName${if (phaseName.isEmpty()) "" else "-"+phaseName}"
+        profilerConfig.name = "$testName${if (phaseName.isEmpty()) "" else "-$phaseName"}"
         profilerConfig.path = pathToResource("profile/${plainname(name)}")
         val profilerHandler = if (profilerConfig.enabled && !profilerConfig.warmup)
             ProfilerHandler.getInstance(profilerConfig)
@@ -387,8 +387,6 @@ class Stats(
                 )
 
                 benchmark.writeJson()
-
-                //rebuildGeomMean(agentName, buildBranch, buildId, simpleDateFormat, benchmark)
             }
         } finally {
             metric = null
@@ -396,31 +394,6 @@ class Stats(
         //metrics.writeCSV(name, header)
     }
 
-    private fun rebuildGeomMean(
-        agentName: String?,
-        buildBranch: String?,
-        buildId: Int?,
-        simpleDateFormat: SimpleDateFormat,
-        benchmark: Benchmark
-    ) {
-        with(
-            Benchmark(
-                agentName = agentName,
-                buildBranch = buildBranch,
-                buildId = buildId,
-                benchmark = name,
-                synthetic = true,
-                name = "geomMean",
-                buildTimestamp = simpleDateFormat.format(Date())
-            )
-        ) {
-            loadJson()
-            merge(benchmark)
-
-            writeJson()
-        }
-    }
-
     companion object {
         const val TEST_KEY = "test"
         const val ERROR_KEY = "error"
@@ -428,7 +401,7 @@ class Stats(
         const val WARM_UP = "warm-up"
         const val GEOM_MEAN = "geomMean"
 
-        internal val extraMetricNames = setOf("", GEOM_MEAN, "mean", "stdDev")
+        internal val extraMetricNames = setOf("", "_value", GEOM_MEAN, "mean", "stdDev")
 
         inline fun runAndMeasure(note: String, block: () -> Unit) {
             val openProjectMillis = measureTimeMillis {
diff --git a/idea/performanceTests/test/org/jetbrains/kotlin/idea/perf/util/Metric.kt b/idea/performanceTests/test/org/jetbrains/kotlin/idea/perf/util/Metric.kt
index 603cd1df1f8..d0b3eb455c1 100644
--- a/idea/performanceTests/test/org/jetbrains/kotlin/idea/perf/util/Metric.kt
+++ b/idea/performanceTests/test/org/jetbrains/kotlin/idea/perf/util/Metric.kt
@@ -13,7 +13,7 @@ import java.util.ArrayList
 
 @JsonInclude(JsonInclude.Include.NON_NULL)
 data class Benchmark(
-    val version: Int = 3,
+    val version: Int = 4,
     @set:JsonProperty("agentName")
     var agentName: String?,
     @set:JsonProperty("benchmark")
@@ -46,14 +46,6 @@ data class Benchmark(
         hasError = if (metrics.any { it.ifHasError() == true }) true else null
     }
 
-    fun resetValue() {
-        buildId = null
-        metricValue = null
-        metricError = null
-        buildBranch = null
-        metrics.forEach { it.resetValue() }
-    }
-
     private fun String?.escapeName() = this?.replace(Regex("[^A-Za-z0-9_]"), "_")
 
     fun id(): String =
diff --git a/idea/performanceTests/test/org/jetbrains/kotlin/idea/perf/util/aggregateResults.kt b/idea/performanceTests/test/org/jetbrains/kotlin/idea/perf/util/aggregateResults.kt
index fefce6700e6..19d8880353a 100644
--- a/idea/performanceTests/test/org/jetbrains/kotlin/idea/perf/util/aggregateResults.kt
+++ b/idea/performanceTests/test/org/jetbrains/kotlin/idea/perf/util/aggregateResults.kt
@@ -12,15 +12,14 @@ fun main(args: Array<String>) {
     val argFile = File(args[0])
     val groupBy = argFile.listFiles()
         .filter { it.length() > 0 && it.name.startsWith("stats-") && it.extension == "json" }
-        .groupBy { it.name.replace("stats-", "").split("_")[0] }
+        .map { it.loadBenchmark() }
+        .groupBy { it.benchmark }
 
-    groupBy.forEach { (k, v) ->
-        if (v.isEmpty()) return@forEach
-
-        val benchmarks = v.map { it.loadBenchmark() }
+    groupBy.forEach { (k, benchmarks) ->
+        if (benchmarks.isEmpty()) return@forEach
 
         benchmarks.forEach { benchmark ->
-            benchmark.metrics.firstOrNull { it.metricName == "" }?.let { metric ->
+            benchmark.metrics.firstOrNull { it.metricName == "_value" }?.let { metric ->
                 metric.rawMetrics?.firstOrNull { it.warmUp == true && it.index == 0 }?.let {
                     val warmUpBenchmark = Benchmark(
                         agentName = benchmark.agentName,
@@ -40,16 +39,15 @@ fun main(args: Array<String>) {
         }
 
         // build geom mean benchmark
-        val first = v.first()
-        val loadBenchmark = first.loadBenchmark()
+        val first = benchmarks.first()
         val geomMeanBenchmark = Benchmark(
-            agentName = loadBenchmark.agentName,
-            buildBranch = loadBenchmark.buildBranch,
-            buildId = loadBenchmark.buildId,
-            benchmark = loadBenchmark.benchmark,
+            agentName = first.agentName,
+            buildBranch = first.buildBranch,
+            buildId = first.buildId,
+            benchmark = first.benchmark,
             synthetic = true,
             name = "geomMean",
-            buildTimestamp = loadBenchmark.buildTimestamp
+            buildTimestamp = first.buildTimestamp
         )
 
         benchmarks