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* try to better guess a good parallel processing thread count that's reasonable for most systems be it 2 core / 32 core / HDD / SSD / etc

This commit is contained in:
Reinhard Pointner 2014-11-04 12:08:10 +00:00
parent 73c88dd365
commit 885c270204
1 changed files with 2 additions and 2 deletions
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4
source/net/filebot/ui/sfv/ChecksumComputationService.java
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@ -83,7 +83,7 @@ class ChecksumComputationService {
private class ChecksumComputationExecutor extends ThreadPoolExecutor { private class ChecksumComputationExecutor extends ThreadPoolExecutor {
public ChecksumComputationExecutor() { public ChecksumComputationExecutor() {
super(1, Runtime.getRuntime().availableProcessors(), 0L, TimeUnit.SECONDS, new LinkedBlockingQueue<Runnable>(), new DefaultThreadFactory("ChecksumComputationPool", Thread.MIN_PRIORITY)); super(1, 2 * Runtime.getRuntime().availableProcessors(), 0L, TimeUnit.SECONDS, new LinkedBlockingQueue<Runnable>(), new DefaultThreadFactory("ChecksumComputationPool", Thread.MIN_PRIORITY));
synchronized (executors) { synchronized (executors) {
if (executors.add(this) && executors.size() == 1) { if (executors.add(this) && executors.size() == 1) {
@ -100,7 +100,7 @@ class ChecksumComputationService {
// for a few files, use one thread // for a few files, use one thread
// for lots of files, use multiple threads // for lots of files, use multiple threads
// e.g 50 files ~ 1 thread, 200 files ~ 2 threads, 1000 files ~ 3 threads, 40000 files ~ 5 threads // e.g 50 files ~ 1 thread, 200 files ~ 2 threads, 1000 files ~ 3 threads, 40000 files ~ 5 threads
return max((int) log10(getQueue().size()), 1); return max(1, (int) ((Runtime.getRuntime().availableProcessors() / 2) + log10(getQueue().size()) - 1));
} }
@Override @Override