Uploading large artifacts is dreadfully slow

The performance of the Upload Artifact page is absolutely dreadful.

Technically this is probably an enhancement, rather than a bug... but it is so bad in current form I'm filing it as a bug.

The UploadAction class uses what must be the worst copy file
implementation possible.

It says:

FileOutputStream out = new FileOutputStream( new File(targetPath, targetFilename ) );
FileInputStream input = new FileInputStream( sourceFile );

try
{
int i;
while ( ( i = input.read() ) != -1 )

{ out.write( i ); }

out.flush();
}

Alternating between reading and writing one bit at a time???? No
wonder it was taking me over a 1/2 hour to try to upload a simple 150
MB file (with the CPU locked at 100% utilization). Wow.

Please replace that implementation with this (or similar):

BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(new File(targetPath, targetFilename)));
BufferedInputStream input = new BufferedInputStream(new FileInputStream(sourceFile));
try
{
byte[] buf = new byte[1024];
int len;
while ((len = input.read(buf)) > 0)

{ out.write(buf, 0, len); }

out.flush();
}

Tis about 100 orders of magnitude faster.