Administrator/real-debrid-downloader
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Boost hybrid extraction speed: G1GC, more threads, larger heap

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- Switch JVM GC from SerialGC to G1GC with MaxGCPauseMillis=50
  for shorter pause times in long-lived daemon
- Increase JVM heap from 512m/8g to 1g/32g to reduce GC pressure
  on systems with plenty of RAM
- Raise hybrid thread cap from floor(cpuCount/2) capped 8
  to ceil(cpuCount*0.75) capped 12 — downloads are I/O-bound
  and don't need much CPU headroom
- Refresh daemon process priority before each request so hybrid
  extraction gets correct CPU priority even if daemon was started
  with a different priority level

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Sucukdeluxe 2026-03-08 00:02:59 +01:00
parent fd3b5033a4
commit 27d75153b9
1 changed files with 16 additions and 9 deletions
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25
src/main/extractor.ts
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@ -733,14 +733,14 @@ function extractCpuBudgetPercent(priority?: string): number {
function extractorThreadSwitch(hybridMode = false, priority?: string): string {
if (hybridMode) {
// Use half the CPU budget during hybrid extraction to leave headroom for
// concurrent downloads. Falls back to at least 2 threads.
// Use 75% of CPU cores during hybrid extraction — downloads are mostly
// I/O-bound so they don't need much CPU headroom.
const envValue = Number(process.env.RD_EXTRACT_THREADS ?? NaN);
if (Number.isFinite(envValue) && envValue >= 1 && envValue <= 32) {
return `-mt${Math.floor(envValue)}`;
}
const cpuCount = Math.max(1, os.cpus().length || 1);
const hybridThreads = Math.max(2, Math.min(8, Math.floor(cpuCount / 2)));
const hybridThreads = Math.max(2, Math.min(12, Math.ceil(cpuCount * 0.75)));
return `-mt${hybridThreads}`;
}
const envValue = Number(process.env.RD_EXTRACT_THREADS ?? NaN);
@ -1261,9 +1261,10 @@ function startDaemon(layout: JvmExtractorLayout): boolean {
const args = [
"-Dfile.encoding=UTF-8",
`-Djava.io.tmpdir=${jvmTmpDir}`,
"-Xms512m",
"-Xmx8g",
"-XX:+UseSerialGC",
"-Xms1g",
"-Xmx32g",
"-XX:+UseG1GC",
"-XX:MaxGCPauseMillis=50",
"-cp",
layout.classPath,
JVM_EXTRACTOR_MAIN_CLASS,
@ -1474,6 +1475,10 @@ async function runJvmExtractCommand(
// Try persistent daemon first — saves ~5s JVM boot per archive
if (isDaemonAvailable(layout)) {
// Refresh daemon process priority before each request so hybrid
// extraction ("high") gets NORMAL priority even if the daemon was
// originally started with BELOW_NORMAL.
lowerExtractProcessPriority(daemonProcess?.pid, currentExtractCpuPriority);
logger.info(`JVM Daemon: Sofort verfügbar, sende Request für ${path.basename(archivePath)} (pwCandidates=${passwordCandidates.length})`);
return sendDaemonRequest(archivePath, targetDir, conflictMode, passwordCandidates, onArchiveProgress, signal, timeoutMs);
}
@ -1486,6 +1491,7 @@ async function runJvmExtractCommand(
const ready = await waitForDaemonReady(15_000, signal);
const waitedMs = Date.now() - waitStartedAt;
if (ready) {
lowerExtractProcessPriority(daemonProcess?.pid, currentExtractCpuPriority);
logger.info(`JVM Daemon: Bereit nach ${waitedMs}ms — sende Request für ${path.basename(archivePath)}`);
return sendDaemonRequest(archivePath, targetDir, conflictMode, passwordCandidates, onArchiveProgress, signal, timeoutMs);
}
@ -1503,9 +1509,10 @@ async function runJvmExtractCommand(
const args = [
"-Dfile.encoding=UTF-8",
`-Djava.io.tmpdir=${jvmTmpDir}`,
"-Xms512m",
"-Xmx8g",
"-XX:+UseSerialGC",
"-Xms1g",
"-Xmx32g",
"-XX:+UseG1GC",
"-XX:MaxGCPauseMillis=50",
"-cp",
layout.classPath,
JVM_EXTRACTOR_MAIN_CLASS,