Hey everyone,
I'm using commons-vfs (2.0-SNAPSHOT) to interact with JSch (0.1.42) and
retrieve files via SFTP.
This is the configuration I do:
JSch.setLogger(new com.jcraft.jsch.Logger() {
@Override
public void log(int level, String message) {
Logger.getLogger(JSch.class).info(message);
}
@Override
public boolean isEnabled(int level) {
return true;
}
});
SftpFileSystemConfigBuilder builder = SftpFileSystemConfigBuilder.getInstance();
OPTS = new FileSystemOptions();
File sshDir = new File(System.getProperty("user.home"), ".ssh");
try {
builder.setIdentities(OPTS, sshDir.listFiles(new KeyFilter()));
} catch (FileSystemException e) {
LOG.fatal("Couldn't open private keys", e);
}
builder.setUserInfo(OPTS, new VFSUserInfo());
try {
FSM = org.apache.commons.vfs.VFS.getManager();
} catch (FileSystemException e) {
throw new IllegalStateException(e);
}
FileObject file = VFS.getManager().resolveFile("sftp://...";, OPTS);
File tempFile = File.createTempFile("vfsdownload", null);
tempFile.deleteOnExit();
FileObject newFile = VFS.getManager().toFileObject(tempFile);
IOUtils.copyLarge(file.getContent().getInputStream(),
newFile.getContent().getOutputStream()));
Doing this, I'm observing transfer rates of approx 200KB/s.
If I run
scp u...@server:/file /tmp/dest
I get almost 2MB/s
Are there known ways to tune the SFTP implementation to go faster? I can't
live with such a dramatic slowdown...
Thanks in advance,
Steven Schlansker
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