TM with very, very slow data transfer (700 MB/h)
Hello Dear Mac-Users,
After changing my DSL modem my TM works very, very slowly. Normally I store on an external hard drive, divided into three partitions, one for my MacMini, MacBook and my iMac. Except my iMac everything works fine. Does anyone have an idea what's going wrong at the moment? Did I have to delete some old *.plist? I am grateful for any good proposal.
Frank
Does that iMac connect to the Time Capsule via Wi-Fi? On any of your Macs that use a Wi-Fi connection, hold down an "option" key while you pull down the Wi-Fi menu bar item. Report here the values of RSSI that you see.
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import java.text.*;
import java.util.*;
public class Test {
public static void main(String[] argv)
throws Exception {
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String dateString = "01.01.1970 00:00:00";
DateFormat df = new SimpleDateFormat(dateFormat);
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System.out.println();
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cal.setTime(date);
System.out.println(cal.getTime());
System.out.println(cal.getTimeInMillis());
System.out.println();
Date date2 = new Date(0);
System.out.println(date2);
System.out.println(date2.getTime());
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Thu Jan 01 00:00:00 GMT 1970
01 January 1970 00:00:00 GMT
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Thu Jan 01 00:00:00 GMT 1970
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Thu Jan 01 01:00:00 GMT 1970
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Hi -
Here is the basic problem. I want to take a bufferedImage (read from a jpeg earlier on) and then rotate it according to an angle value (radians) and then resize it to fit within a specifically sized box. My code works fine, but... I have to do this in a loop up to 200 times. The process is often taking several minutes to complete. If this is simply a consequence of what I am trying to do, then I'll accept that, but surely I am just doing something wrong? Please help!
Thanks - here is the (working but very slow) code
public Graphics2D get_shape_image(Graphics2D g, BufferedImage b, double shaperotation, double space_width, double space_height,
float x_scale_factor, float y_scale_factor, float shapeTransparency){
// Work out the boundimg box size of the rotated image
double imageWidth = (double) b.getWidth();
double imageHeight = (double) b.getHeight();
double cos = Math.abs( Math.cos(shaperotation));
double sin = Math.abs( Math.sin(shaperotation));
int new_width = (int) Math.floor(imageWidth * cos + imageHeight * sin);
int new_height = (int) Math.floor(imageHeight * cos + imageWidth * sin);
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at.setToRotation(shaperotation, (double) new_width / 2.0d, new_height / 2.0d);
affine_op = new AffineTransformOp(at, AffineTransformOp.TYPE_BILINEAR);
rotated = affine_op.filter(transformed, null);
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double xScale = (double) (space_width * x_scale_factor) / (double) new_width;
double yScale = (double) (space_height * y_scale_factor) / (double) new_height;
at.setToScale(xScale, yScale);
affine_op = new AffineTransformOp(at, AffineTransformOp.TYPE_BILINEAR);
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double x_adjust = (space_width / 2.0d) - ((space_width * x_scale_factor) / 2.0d);
double y_adjust = (space_height / 2.0d) - ((space_height * y_scale_factor) / 2.0d);
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if (sizedImage.getWidth() > 0 && sizedImage.getHeight() > 0)
g.drawImage(sizedImage, null, (int) x_adjust, (int) y_adjust);
return g;
}Your code worked okay in my system: busy at 200fps using 1.0f for alpha and
the x/y scale_factor values.
Here's another approach that isn't quite as busy.
import java.awt.*;
import java.awt.geom.*;
import java.awt.image.BufferedImage;
import java.io.*;
import javax.imageio.ImageIO;
import javax.swing.*;
public class XTest extends JPanel
BufferedImage image;
int gridWidth = 100;
int gridHeight = 100;
double theta = 0;
double thetaInc;
public XTest(BufferedImage image)
this.image = image;
thetaInc = Math.toRadians(1);
protected void paintComponent(Graphics g)
super.paintComponent(g);
Graphics2D g2 = (Graphics2D)g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
RenderingHints.VALUE_INTERPOLATION_BICUBIC);
int w = getWidth();
int h = getHeight();
int imageW = image.getWidth();
int imageH = image.getHeight();
// rather than making a new BufferedImage for each step of
// the rotation and scaling let's try to rotate, scale and
// fit the source image directly into the grid by using
// transforms...
// rotation
AffineTransform rotateXform = new AffineTransform();
double x = (w - imageW)/2;
double y = (h - imageH)/2;
rotateXform.setToTranslation(x,y);
rotateXform.rotate(theta, imageW/2.0, imageH/2.0);
// get rotated size for source
double cos = Math.abs( Math.cos(theta));
double sin = Math.abs( Math.sin(theta));
double rw = Math.rint(imageW * cos + imageH * sin);
double rh = Math.rint(imageH * cos + imageW * sin);
// scale factors to fit image into grid
double xScale = gridWidth / rw;
double yScale = gridHeight / rh;
// scale from center
x = (1.0 - xScale)*w/2;
y = (1.0 - yScale)*h/2;
AffineTransform scaleXform = AffineTransform.getTranslateInstance(x,y);
scaleXform.scale(xScale, yScale);
scaleXform.concatenate(rotateXform);
g2.drawRenderedImage(image, scaleXform);
// markers
// grid
g2.setPaint(Color.red);
int gx = (w - gridWidth)/2;
int gy = (h - gridHeight)/2;
g2.drawRect(gx, gy, gridWidth, gridHeight);
// bounds of unscaled, rotated source image
g2.setPaint(Color.blue);
double rx = (w - rw)/2;
double ry = (h - rh)/2;
g2.draw(new Rectangle2D.Double(rx, ry, rw, rh));
public void rotate()
theta += thetaInc;
repaint();
public static void main(String[] args) throws IOException
BufferedImage bi = ImageIO.read(new File("images/bclynx.jpg"));
XTest test = new XTest(bi);
Activator activator = new Activator(test);
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setContentPane(test);
f.setSize(400,400);
f.setLocation(200,200);
f.setVisible(true);
activator.start();
class Activator implements Runnable
XTest xTest;
Thread thread;
boolean animate;
public Activator(XTest xt)
xTest = xt;
animate = false;
public void run()
while(animate)
try
Thread.sleep(50);
catch(InterruptedException ie)
animate = false;
System.out.println("interrupt");
xTest.rotate();
public void start()
if(!animate)
animate = true;
thread = new Thread(this);
thread.setPriority(Thread.NORM_PRIORITY);
thread.start();
public void stop()
animate = false;
thread = null;
} -
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Hi,
Actually, I don't know where to start. But let's explain my setup first:
My iMac (wired) and AppleTV (wireless) are connected to the Time Capsule (802.11n, 5Ghz)
My girlfriend's MacBook and 2 x iPhone 2G's (wireless) are connected to an Airport Extreme Base station (802.11b/g compatible).
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RutgerThe new Airport Extremes and Time Capsules suffers from terrible performance over the 5GHz band and it's a problem that not only affects me and you, but hundreds of thousands of other owners.
Nobody knows if it's a firmware problem or the Marvell chips inside that's the problem, and Apple hasn't said or done anything for months.
I'm still hoping for a firmware update to solve this, but if it doesn't get fixed soon enough, I'm gonna return it and go back to backing up to wired disk and my rock solid Airport Express.
Not the happiest answer, but at least you have a clue now.
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I have two XP sp3 machines in my network. Data transfer between them caps at 1Mbps. This is very odd since both machines have tested at speedtest.net at 15M down and 1M up. Why is my network transfer so slow? What can i try.
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CesarThe Internet Speed Test and the Data Transfer Speed are the 2 different Things, You Internet Speed is nothing related to your Data Transfer Speed between your Computers. As GV suggested you, connect the Cross Over cable between your computers and assign a Static IP to your both the computers and then transfer the data between your computer and check at what speed the data transfer speed is going on.
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Hello Can anyone please help?
When I transfer data between my MacBook and iMac it is taking ages and never used to be this slow a couple of months ago.
A 1 GB file is taking 2 hours. I am using an Airport Extreme 802.11n router on 5GHZ Wide Channel and when I check my connection using Network Utility it says 270 MBit/s.
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