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POStruts Upload Slow Performance
 

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    <p>I have a Struts 1 web application that needs to upload fairly large files (>50 MBytes) from the client to the server. I'm currently using its built-in org.apache.struts.upload.DiskMultipartRequestHandler to handle the HTTP POST multipart/form-data requests. It's working properly, but it's also very very slow, uploading at about 100 KBytes per second.</p> <p>Downloading the same large files from server to client occurs greater than 10 times faster. I don't think this is just the difference between the upload and download speeds of my ISP because using a simple FTP client to transfer the file to the same server takes less than 1/3 the time.</p> <p>I've looked at replacing the built-in DiskMultipartRequestHandler with the newer org.apache.commons.fileupload package, but I'm not sure how to modify this to create the MultipartRequestHandler that Struts 1 requires.</p> <p>Barend commented below that there is a 'bufferSize' parameter that can be set in web.xml. I increased the size of the buffer to 100 KBytes, but it didn't improve the performance. Looking at the implementation of DiskMultipartRequestHandler, I suspect that its performance <i>could</i> be limited because it reads the stream one byte at a time looking for the multipart boundary characters.</p> <p>Is anyone else using Struts to upload large files?</p> <p>Has anyone customized the default DiskMultipartRequestHandler supplied with Struts 1?</p> <p>Do I just need to be more patient while uploading the large files? :-)</p>
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