diff --git a/idea/performanceTests/build.gradle.kts b/idea/performanceTests/build.gradle.kts
index f9037f5d1fd..edbd6e88db3 100644
--- a/idea/performanceTests/build.gradle.kts
+++ b/idea/performanceTests/build.gradle.kts
@@ -67,6 +67,8 @@ javadocJar()
 apply(from = "$rootDir/gradle/kotlinPluginPublication.gradle.kts")
 
 projectTest(taskName = "performanceTest") {
+    exclude("**/*WholeProjectPerformanceTest*")
+
     val currentOs = org.gradle.internal.os.OperatingSystem.current()
 
     if (!currentOs.isWindows) {
@@ -109,4 +111,37 @@ projectTest(taskName = "performanceTest") {
     }
 }
 
+projectTest(taskName = "wholeProjectsPerformanceTest") {
+    exclude(
+        "**/*Generated*",
+        "**/*PerformanceProjectsTest*",
+        "**/*PerformanceStressTest*",
+        "**/*PerformanceNativeProjectsTest*"
+    )
+    include("**/*WholeProjectPerformanceTest*")
+
+    workingDir = rootDir
+
+    jvmArgs?.removeAll { it.startsWith("-Xmx") }
+
+    maxHeapSize = "3g"
+    jvmArgs("-DperformanceProjects=${System.getProperty("performanceProjects")}")
+    jvmArgs("-Didea.debug.mode=true")
+    jvmArgs("-DemptyProfile=${System.getProperty("emptyProfile")}")
+    jvmArgs("-XX:SoftRefLRUPolicyMSPerMB=50")
+    jvmArgs(
+        "-XX:ReservedCodeCacheSize=240m",
+        "-XX:+UseCompressedOops",
+        "-XX:+UseConcMarkSweepGC"
+    )
+
+    doFirst {
+        systemProperty("idea.home.path", intellijRootDir().canonicalPath)
+        project.findProperty("cacheRedirectorEnabled")?.let {
+            systemProperty("kotlin.test.gradle.import.arguments", "-PcacheRedirectorEnabled=$it")
+        }
+    }
+}
+
+
 testsJar()
\ No newline at end of file
diff --git a/idea/performanceTests/test/org/jetbrains/kotlin/idea/perf/HighlightWholeProjectPerformanceTest.kt b/idea/performanceTests/test/org/jetbrains/kotlin/idea/perf/HighlightWholeProjectPerformanceTest.kt
new file mode 100644
index 00000000000..f922eeff7ed
--- /dev/null
+++ b/idea/performanceTests/test/org/jetbrains/kotlin/idea/perf/HighlightWholeProjectPerformanceTest.kt
@@ -0,0 +1,127 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.idea.perf
+
+import com.intellij.codeInsight.daemon.impl.HighlightInfo
+import com.intellij.openapi.module.impl.ProjectLoadingErrorsHeadlessNotifier
+import com.intellij.testFramework.UsefulTestCase
+import org.jetbrains.kotlin.idea.perf.util.*
+import org.jetbrains.kotlin.idea.testFramework.ProjectOpenAction
+import org.jetbrains.kotlin.test.JUnit3RunnerWithInners
+import org.junit.runner.RunWith
+import java.io.File
+
+@RunWith(JUnit3RunnerWithInners::class)
+class HighlightWholeProjectPerformanceTest : UsefulTestCase() {
+
+    override fun setUp() {
+        val allowedErrorDescription = setOf(
+            "Unknown artifact type: war",
+            "Unknown artifact type: exploded-war"
+        )
+
+        ProjectLoadingErrorsHeadlessNotifier.setErrorHandler(
+            { errorDescription ->
+                val description = errorDescription.description
+                if (description !in allowedErrorDescription) {
+                    throw RuntimeException(description)
+                } else {
+                    logMessage { "project loading error: '$description' at '${errorDescription.elementName}'" }
+                }
+            }, testRootDisposable
+        )
+    }
+
+    fun testHighlightAllKtFilesInProject() {
+        val emptyProfile = System.getProperty("emptyProfile", "false").toBoolean()
+        val projectSpecs = projectSpecs()
+        for (projectSpec in projectSpecs) {
+            val projectName = projectSpec.name
+            val projectPath = projectSpec.path
+
+            suite(suiteName = "$projectName project") {
+                app {
+                    warmUpProject()
+
+                    with(config) {
+                        warmup = 1
+                        iterations = 3
+                    }
+
+                    try {
+                        project(ExternalProject(projectPath, ProjectOpenAction.GRADLE_PROJECT), refresh = true) {
+                            profile(if (emptyProfile) EmptyProfile else DefaultProfile)
+
+                            val projectDir = File(projectPath)
+
+                            val ktFiles = projectDir.allFilesWithExtension("kt").toList()
+                            logStatValue("number of kt files", ktFiles.size)
+                            val topMidLastFiles =
+                                limitedFiles(ktFiles, 10)
+                                    .map {
+                                        val path = it.path
+                                        it to path.substring(path.indexOf(projectPath) + projectPath.length + 1)
+                                    }
+                            logStatValue("limited number of kt files", topMidLastFiles.size)
+
+                            topMidLastFiles.forEach {
+                                logMessage { "${it.second} fileSize: ${it.first.length()}" }
+                            }
+
+                            topMidLastFiles.forEachIndexed { idx, pair ->
+                                val file = pair.first
+                                val fileName = pair.second
+                                logMessage { "$idx / ${topMidLastFiles.size} : $fileName fileSize: ${file.length()}" }
+
+                                try {
+                                    fixture(fileName).use {
+                                        measure<List<HighlightInfo>>(fileName) {
+                                            test = {
+                                                highlight(it)
+                                            }
+                                        }
+                                    }
+                                } catch (e: Exception) {
+                                    // nothing as it is already caught by perfTest
+                                }
+                            }
+                        }
+                    } catch (e: Exception) {
+                        // nothing as it is already caught by perfTest
+                    }
+                }
+
+            }
+        }
+    }
+
+    private fun limitedFiles(ktFiles: List<File>, partPercent: Int): Collection<File> {
+        val sortedBySize = ktFiles
+            .filter { it.length() > 0 }
+            .map { it to it.length() }.sortedByDescending { it.second }
+        val percentOfFiles = (sortedBySize.size * partPercent) / 100
+
+        val topFiles = sortedBySize.take(percentOfFiles).map { it.first }
+        val midFiles =
+            sortedBySize.take(sortedBySize.size / 2 + percentOfFiles / 2).takeLast(percentOfFiles).map { it.first }
+        val lastFiles = sortedBySize.takeLast(percentOfFiles).map { it.first }
+
+        return LinkedHashSet(topFiles + midFiles + lastFiles)
+    }
+
+    private fun projectSpecs(): List<ProjectSpec> {
+        val projects = System.getProperty("performanceProjects") ?: return emptyList()
+        return projects.split(",").map {
+            val idx = it.indexOf("=")
+            if (idx <= 0) ProjectSpec(it, "../$it") else ProjectSpec(it.substring(0, idx), it.substring(idx + 1))
+        }.filter {
+            val path = File(it.path)
+            path.exists() && path.isDirectory
+        }
+    }
+
+    private data class ProjectSpec(val name: String, val path: String)
+}
\ No newline at end of file