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speed up template download: don't sync io for each write

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(cherry picked from commit 6de4dcb10a076671acc0f7486d493e914b59d1d4)
This commit is contained in:
Edison Su 2014-09-30 16:52:36 -07:00 committed by David Nalley
parent fa5c42c409
commit ae0bf7db5f
1 changed files with 6 additions and 2 deletions
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8
core/src/com/cloud/storage/template/HttpTemplateDownloader.java
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@ -26,6 +26,7 @@ import java.io.InputStream;
import java.io.RandomAccessFile;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.Date;
import org.apache.commons.httpclient.ChunkedInputStream;
@ -233,9 +234,10 @@ public class HttpTemplateDownloader extends ManagedContextRunnable implements Te
remoteSize = maxTemplateSizeInBytes;
}
InputStream in = !chunked ? new BufferedInputStream(request.getResponseBodyAsStream()) : new ChunkedInputStream(request.getResponseBodyAsStream());
URL url = new URL(getDownloadUrl());
InputStream in = url.openStream();
RandomAccessFile out = new RandomAccessFile(file, "rwd");
RandomAccessFile out = new RandomAccessFile(file, "rw");
out.seek(localFileSize);
s_logger.info("Starting download from " + getDownloadUrl() + " to " + toFile + " remoteSize=" + remoteSize + " , max size=" + maxTemplateSizeInBytes);
@ -279,6 +281,8 @@ public class HttpTemplateDownloader extends ManagedContextRunnable implements Te
done = true;
}
}
out.getFD().sync();
Date finish = new Date();
String downloaded = "(incomplete download)";
if (totalBytes >= remoteSize) {