Xolve Xolve - 11 months ago 324
Java Question

JCIFS: file retrieval is too slow to be usable

I was just testing JCIFS for accessing Windows shares. It is very slow to the point of being completely unusable.

import jcifs.smb.*;

class First {
public static void main(String[] args) throws Exception {
try {
//jcifs.Config.setProperty( "jcifs.netbios.wins", "" );
NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication("domain.com", "Administrator", "password");

SmbFile f = new SmbFile("smb://", auth);
SmbFileInputStream in = new SmbFileInputStream(f);
byte[] b = new byte[8192];
int n;
while(( n = in.read( b )) > 0 ) {
System.out.write( b, 0, n );
} catch (SmbException smbe) {

It takes very long time for initial output to come and subsequent reads are also very slow. Any ideas how to use it? Any alternatives by which I can write Java code to access the Windows shares in a portable way are also welcome


I found here that SmbFileInputStream doesn't do its own buffering and hence the reason for being slow. Wrapping SmbFileInputStream in a BufferedInputStream solved the problem.

 SmbFile sFile = new SmbFile(path, authentication);

 BufferedInputStream buf = new BufferedInputStream(new SmbFileInputStream(sFile));