diff --git a/code/features-index/result-ranking/src/main/java/nu/marginalia/ranking/ResultValuator.java b/code/features-index/result-ranking/src/main/java/nu/marginalia/ranking/ResultValuator.java
index 2a856258..6322c09c 100644
--- a/code/features-index/result-ranking/src/main/java/nu/marginalia/ranking/ResultValuator.java
+++ b/code/features-index/result-ranking/src/main/java/nu/marginalia/ranking/ResultValuator.java
@@ -80,6 +80,14 @@ public class ResultValuator {
             temporalBias = 0;
         }
 
+        logger.info("averageSentenceLengthPenalty: " + averageSentenceLengthPenalty);
+        logger.info("documentLengthPenalty: " + documentLengthPenalty);
+        logger.info("qualityPenalty: " + qualityPenalty);
+        logger.info("rankingBonus: " + rankingBonus);
+        logger.info("topologyBonus: " + topologyBonus);
+        logger.info("temporalBias: " + temporalBias);
+        logger.info("flagsPenalty: " + flagsPenalty);
+
         double overallPart = averageSentenceLengthPenalty
                            + documentLengthPenalty
                            + qualityPenalty
@@ -112,9 +120,22 @@ public class ResultValuator {
         double overallPartPositive = Math.max(0, overallPart);
         double overallPartNegative = -Math.min(0, overallPart);
 
+
+        logger.info("bestTcf: " + bestTcf);
+        logger.info("bestBM25F: " + bestBM25F);
+        logger.info("bestBM25P: " + bestBM25P);
+        logger.info("bestBM25PN: " + bestBM25PN);
+        logger.info("overallPartPositive: " + overallPartPositive);
+        logger.info("overallPartNegative: " + overallPartNegative);
+
         // Renormalize to 0...15, where 0 is the best possible score;
         // this is a historical artifact of the original ranking function
-        return normalize(1.5 * bestTcf + bestBM25F + bestBM25P + 0.25 * bestBM25PN + overallPartPositive, overallPartNegative);
+        double ret = normalize(1.5 * bestTcf + bestBM25F + bestBM25P + 0.25 * bestBM25PN + overallPartPositive, overallPartNegative);
+
+        logger.info("ret: " + ret);
+
+        return ret;
+
     }
 
     private double calculateQualityPenalty(int size, int quality, ResultRankingParameters rankingParams) {
diff --git a/code/libraries/blocking-thread-pool/src/main/java/nu/marginalia/util/ProcessingIterator.java b/code/libraries/blocking-thread-pool/src/main/java/nu/marginalia/util/ProcessingIterator.java
index 523381fa..c143f88a 100644
--- a/code/libraries/blocking-thread-pool/src/main/java/nu/marginalia/util/ProcessingIterator.java
+++ b/code/libraries/blocking-thread-pool/src/main/java/nu/marginalia/util/ProcessingIterator.java
@@ -19,21 +19,16 @@ public class ProcessingIterator<T> implements Iterator<T> {
 
     private final LinkedBlockingQueue<T> queue;
     private final AtomicBoolean isFinished = new AtomicBoolean(false);
-    private final ExecutorService executorService;
-    private final Semaphore sem;
+    private final SimpleBlockingThreadPool pool;
 
     private T next = null;
 
-    private final int parallelism;
-
-    ProcessingIterator(ExecutorService executorService, int queueSize, int parallelism, ProcessingJob<T> task) {
-        this.parallelism = parallelism;
-
+    @SneakyThrows
+    ProcessingIterator(SimpleBlockingThreadPool pool, int queueSize, ProcessingJob<T> task) {
         queue = new LinkedBlockingQueue<>(queueSize);
-        this.executorService = executorService;
-        sem = new Semaphore(parallelism);
+        this.pool = pool;
 
-        executorService.submit(() -> executeJob(task));
+        pool.submit(() -> executeJob(task));
     }
 
     public static Factory factory(int queueSize, int parallelism) {
@@ -50,20 +45,13 @@ public class ProcessingIterator<T> implements Iterator<T> {
         }
     }
 
+    @SneakyThrows
     private void executeTask(Task<T> task) {
-        try {
-            sem.acquire();
-        } catch (InterruptedException e) {
-            return;
-        }
-
-        executorService.submit(() -> {
+        pool.submit(() -> {
             try {
                 queue.put(task.get());
             } catch (Exception e) {
                 logger.warn("Exception while processing", e);
-            } finally {
-                sem.release();
             }
         });
     }
@@ -97,7 +85,7 @@ public class ProcessingIterator<T> implements Iterator<T> {
     private boolean expectMore() {
         return !isFinished.get() // we are still reading from the database
                 || !queue.isEmpty()   // ... or we have documents in the queue
-                || sem.availablePermits() < parallelism;  // ... or we are still processing documents
+                || pool.getActiveCount() > 0;  // ... or we are still processing documents
     }
 
     /** Returns the next document to be processed.
@@ -142,24 +130,17 @@ public class ProcessingIterator<T> implements Iterator<T> {
 
     public static class Factory {
         private final int queueSize;
-        private final int parallelism;
-        private final ExecutorService executorService;
+        private final SimpleBlockingThreadPool pool;
 
         Factory(int queueSize, int parallelism) {
             this.queueSize = queueSize;
-            this.parallelism = parallelism;
-            this.executorService = Executors.newFixedThreadPool(parallelism);
+            this.pool = new SimpleBlockingThreadPool("sideload", parallelism, 4);
         }
 
         public <T> ProcessingIterator<T> create(ProcessingJob<T> task) {
-            return new ProcessingIterator<>(executorService, queueSize, parallelism, task);
+            return new ProcessingIterator<>(pool, queueSize, task);
         }
 
-        public void stop() {
-            if (!executorService.isShutdown()) {
-                executorService.shutdown();
-            }
-        }
     }
 
 }
diff --git a/code/processes/converting-process/src/main/java/nu/marginalia/converting/processor/DomainProcessor.java b/code/processes/converting-process/src/main/java/nu/marginalia/converting/processor/DomainProcessor.java
index 630f97f7..a7f62aca 100644
--- a/code/processes/converting-process/src/main/java/nu/marginalia/converting/processor/DomainProcessor.java
+++ b/code/processes/converting-process/src/main/java/nu/marginalia/converting/processor/DomainProcessor.java
@@ -86,7 +86,9 @@ public class DomainProcessor {
         private final Set<String> processedUrls = new HashSet<>();
         private final DomainLinks externalDomainLinks;
         private final LshDocumentDeduplicator deduplicator = new LshDocumentDeduplicator();
-        private static ProcessingIterator.Factory iteratorFactory = ProcessingIterator.factory(24, 16);
+        private static final ProcessingIterator.Factory iteratorFactory = ProcessingIterator.factory(8,
+                Integer.getInteger("java.util.concurrent.ForkJoinPool.common.parallelism", Runtime.getRuntime().availableProcessors())
+        );
 
         SideloadProcessing(SerializableCrawlDataStream dataStream, int sizeHint) throws IOException {
             this.dataStream = dataStream;