From 3fb67e45d88f210caac02520d0dd8236a307c0f2 Mon Sep 17 00:00:00 2001
From: Guillaume Nodet <gnodet@gmail.com>
Date: Wed, 21 Oct 2020 14:10:35 +0200
Subject: [PATCH] Leave 1 processor unused on the daemon by default, fixes #111

---
 .../main/java/org/jboss/fuse/mvnd/client/DefaultClient.java   | 3 ++-
 daemon/src/main/java/org/apache/maven/cli/DaemonMavenCli.java | 4 ++--
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/client/src/main/java/org/jboss/fuse/mvnd/client/DefaultClient.java b/client/src/main/java/org/jboss/fuse/mvnd/client/DefaultClient.java
index 9678fd7dc..36fad9829 100644
--- a/client/src/main/java/org/jboss/fuse/mvnd/client/DefaultClient.java
+++ b/client/src/main/java/org/jboss/fuse/mvnd/client/DefaultClient.java
@@ -234,7 +234,8 @@ public ExecutionResult execute(ClientOutput output, List<String> argv) {
 
     static void setDefaultArgs(List<String> args) {
         if (args.stream().noneMatch(arg -> arg.startsWith("-T") || arg.equals("--threads"))) {
-            args.add("-T1C");
+            int procs = Runtime.getRuntime().availableProcessors() - 1;
+            args.add("-T" + procs);
         }
         if (args.stream().noneMatch(arg -> arg.startsWith("-b") || arg.equals("--builder"))) {
             args.add("-bsmart");
diff --git a/daemon/src/main/java/org/apache/maven/cli/DaemonMavenCli.java b/daemon/src/main/java/org/apache/maven/cli/DaemonMavenCli.java
index 812992813..d4be9a1fc 100644
--- a/daemon/src/main/java/org/apache/maven/cli/DaemonMavenCli.java
+++ b/daemon/src/main/java/org/apache/maven/cli/DaemonMavenCli.java
@@ -1006,7 +1006,7 @@ private void populateRequest(CliRequest cliRequest) {
             if (threadConfiguration.contains("C")) {
                 request.setDegreeOfConcurrency(calculateDegreeOfConcurrencyWithCoreMultiplier(threadConfiguration));
             } else {
-                request.setDegreeOfConcurrency(Integer.valueOf(threadConfiguration));
+                request.setDegreeOfConcurrency(Integer.parseInt(threadConfiguration));
             }
         }
 
@@ -1020,7 +1020,7 @@ private void populateRequest(CliRequest cliRequest) {
 
     int calculateDegreeOfConcurrencyWithCoreMultiplier(String threadConfiguration) {
         int procs = Runtime.getRuntime().availableProcessors();
-        return (int) (Float.valueOf(threadConfiguration.replace("C", "")) * procs);
+        return (int) (Float.parseFloat(threadConfiguration.replace("C", "")) * procs);
     }
 
     static File resolveFile(File file, String workingDirectory) {