Low POS throughput on ML100T cards

We have a new OC48 Ring utilizing 3 15454 Nodes and have ML100T cards in each node connected in a "ring" via STS3 circuits to the POS interfaces. On each of the ML100T cards I have several subnets on the fastethernet ports and am routing via eigrp. Latency is very good but my throughput seems very low. Doing file transfers my max troughput is around 90KB/s, which seems low for a 155mb link. Any ideas...would RPR be a better choice instead of using the POS links as point-to-point links? Thanks

Are you seeing CRC and/or input errors on any of the ML cards? There is a bug that may address your issue: CSCsb43596 - CRC errors for 5% traffic out of ML100T ports:
Symptom: ML100T cards send out approximately 5% of frames (frame size 1518) with a bad CRC.
Conditions: This can occur in the following scenario.
1. Autonegotiation is disabled. Speed set to 100/ Duplex to Full.
2. ML startup configuration is saved on TCC and the ports are enabled.
3. Card is rebooted.
Certain ports ( at random) will display CRC errors coming out of them. The failing ports is not always consistent: sometimes after a reboot, different ports will show the CRC errors.
Workaround: Disconnect and reconnect the cable, and the errors go away. Errors also go away if the port is shut/no shutdown.
You can also try resetting the ML cards in each of the nodes to see if the throughput improves.

Similar Messages

Extremely low message throughput with MQ 3.6

We performed some load tests to determine maximum throughput of the Sun JMS framework when used in conditions similar to our application.
The achieved throughput is extremely low: around 10 messages / second while we expected around 100. Could you please verify what may be the reason?
We encountered one particular problem: the time of closing JMS producers increases much during the test. Message throughput decreases proportionally. Time periods of other phases of the JMS API usage remain constant. What can be the reason?
detailed information:
Our configuration used:
server machine:
cpu: Intel Celeron 2.8 Ghz
ram: 1GB
os: CentOS release 4.4 (Final), 2.6.9-42.0.3.EL
application server: Sun Java System Application Server Enterprise Edition 8.1 2005Q2 UR2
java version: 1.5.0_04
we use default imqbroker configuration
client machine:
Intel Celeron 2Ghz
ram: 512MB
os: Fedora Core release 3, 2.6.12-1.1381_FC3
java version: 1.4.02
Test description (find attached test unit sources presenting our way of using JMS API):
Load test is performed by running a number of concurrent test units against the JMS broker. Number of units is constant in time. Additionally, every unit test at the end of its life cycle launches another unit to keep long test time perspective.
Each test unit is self-contained. It contains of a producer and a consumer (MessageListener). It sends messages to itself . Also each message unit sleeps for some time to simulate message processing.
Messages are non-persistent, no durable subscriptions are used. All units are using one shared Queue for whole messaging. Message selectors are utilized to guarantee that messages are delivered to intended receiver.
By this test we wanted to determine a maximum value of message throughput for which all messages are delivered successfully and in some reasonable time (say less than 1 minute).
Some variations of test units are possible, e.g. JMS connections and/or sessions can be open/closed for every sent message or shared among multiple producers. But (contrary to our expectations) we encountered no visible differences in message throughput and message delivery time.
Code of test units:
Sender.java
package pl.ericpol.jmstest;
import javax.jms.Connection;
import javax.jms.JMSException;
import javax.jms.MessageProducer;
import javax.jms.Session;
public class Sender{
     private UnitTest unitTest = null;
     private Connection connection = null;
     private Session session = null;
     private MessageProducer producer = null;
     private String selector = null;
     public Sender(Connection con, Session session, MessageProducer producer, String selector, UnitTest unitTest){
     public void send() {
          try {
               boolean closeSession = false;
               boolean closeProducer = false;
               if(this.session == null){
                    this.session = this.connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
                    closeSession = true;
               if(this.producer == null){
                    this.producer = this.unitTest.createProducer(this.session);
                    closeProducer = true;
               this.producer.send(this.unitTest.createMessage(this.session, this.selector));
               if(closeProducer){
                    this.producer.close();
                    this.producer = null;
               if(closeSession){
                    this.session.close();
                    this.session = null;
          } catch (JMSException e) {
               e.printStackTrace();
Receiver.java
package pl.ericpol.jmstest;
import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageListener;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;
public class Receiver extends Thread implements MessageListener{
     private Connection connection = null;
     private Session session = null;
     private Destination destination = null;
     private MessageConsumer consumer = null;
     private Connection sendConnection = null;
     private Session sendSession = null;
     private MessageProducer producer = null;
     private String qname = null;
     private String selector = null;
     private int messagesToReceive = -1;
     private int delay = -1;
     private UnitTest unitTest = null;
     private boolean active = true;
     private long[][] localStats = null;
     private Boolean monitor = new Boolean(true);
     public Receiver(ConnectionFactory cf, Connection sendConnection, Session sendSession, MessageProducer producer,
               String code, UnitTest unit){
          try {
               this.connection = cf.createConnection();
               this.session = this.connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
               this.destination = this.session.createQueue(this.qname);
               this.consumer = this.session.createConsumer(this.destination, UnitTest.KEY + " = '" + code + "'");
               this.consumer.setMessageListener(this);
               this.connection.start();
               this.producer = producer;
               this.sendSession = sendSession;
               this.sendConnection = sendConnection;
          } catch (JMSException e) {
               e.printStackTrace();
          } catch (NumberFormatException e1) {
               e1.printStackTrace();
     public void run() {
          if(this.consumer == null){
          } else {
               this.sleep(0);
               this.close();
               TestManager.getInstance().unitTestFinished();
     public synchronized void onMessage(Message arg0) {
          Message message = arg0;
          if(this.active){
               if(message == null){
               } else {
                    if(message instanceof TextMessage){
                              this.registerDeliveryTime(this.localStats.length - this.messagesToReceive, message);
                              this.sleep(this.delay);
                              synchronized(this.monitor){
                                   if(--this.messagesToReceive == 0){
                                        this.unitTest.messagesReceived();
                                   } else {
                                        if(this.active){
                                             this.send();
                    } else {
          } else {
          if(! this.active){
               this.notify();
     public synchronized void deactivate(){
     public int getMessagesToReceive(){
          return this.messagesToReceive;
     private void send(){
          try {
               boolean closeSession = false;
               boolean closeProducer = false;
               if(this.sendSession == null){
                    this.sendSession = this.sendConnection.createSession(false, Session.AUTO_ACKNOWLEDGE);
                    closeSession = true;
               if(this.producer == null){
                    this.producer = this.unitTest.createProducer(this.sendSession);
                    closeProducer = true;
               this.producer.send(this.unitTest.createMessage(this.sendSession, this.selector));
               if(closeProducer){
                    this.producer.close();
                    this.producer = null;
               if(closeSession){
                    this.sendSession.close();
                    this.sendSession = null;
          } catch (JMSException e) {
               e.printStackTrace();
     private synchronized void sleep(int delay){
     private void registerDeliveryTime(int index, Message message){
     private synchronized void close(){
          try {
               if(this.producer != null){
                    this.producer.close();
               if(this.sendSession != null){
                    this.sendSession.close();
                    this.sendSession = null;
               if(this.sendConnection != null){
                    this.sendConnection.close();
                    this.sendConnection = null;
               if(this.consumer != null){
                    this.consumer.close();
                    this.consumer = null;
               if(this.session != null){
                    this.session.close();
                    this.session = null;
               if(this.connection != null){
                    this.connection.close();
                    this.connection = null;
          } catch (JMSException e) {
               e.printStackTrace();
TestUnit.java
package pl.ericpol.jmstest;
import java.util.HashMap;
import java.util.Iterator;
import javax.jms.Connection;
import javax.jms.DeliveryMode;
import javax.jms.JMSException;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;
import com.sun.messaging.ConnectionFactory;
import com.sun.messaging.QueueConnectionFactory;
public class UnitTest extends Thread{
     public static final String KEY = "Type";
     private ConnectionFactory cf = null;
     private Connection sendConnection = null;
     private Session sendSession = null;
     private MessageProducer producer = null;
     private int delay = -1;
     private int messagesPerCall = -1;
     private int loop = -1;
     private int timeOut = -1;
     private int maxLoops = -1;
     private boolean waitingFlag = false;
     private boolean messagesReceived = false;
     public UnitTest(int loop){
          try {
               this.cf = new QueueConnectionFactory();
               this.applyProps(this.cf, Properties.getInstance().getSunProps());
               this.sendConnection = this.cf.createConnection();
               if(sharedProducer){
                    this.sendSession = this.sendConnection.createSession(false, Session.AUTO_ACKNOWLEDGE);
                    this.producer = this.createProducer(this.sendSession);
               } else if(sharedSession){
                    this.sendSession = this.sendConnection.createSession(false, Session.AUTO_ACKNOWLEDGE);
               this.sendConnection.start();
          } catch (NumberFormatException e){
               MyLogger.logger.error("number format exception!!");
          } catch (JMSException e) {
               e.printStackTrace();
     public void run(){
          String selector = String.valueOf(Randomizer.getRandInt(Integer.MAX_VALUE));
          Receiver receiver = new Receiver(this.cf, this.sendConnection, this.sendSession, this.producer, selector, this);
          receiver.start();
          long startTime = System.currentTimeMillis();
          this.send(selector);
          synchronized (this) {
               if(! this.messagesReceived){
                    this.sleep(this.timeOut);
          long finishTime = System.currentTimeMillis();
          receiver.deactivate();
          if(++this.loop < this.maxLoops && TestManager.getInstance().getStatus()){
               UnitTest newTest = new UnitTest(this.loop);
               newTest.start();
          } else {
               TestManager.getInstance().workerFinished();
     public void messagesReceived(){
     private synchronized void sleep(int delay){
     private void applyProps(ConnectionFactory cf, HashMap props){
     private void send(String selector){
          Sender sender = new Sender(this.sendConnection, this.sendSession, this.producer, selector, this);
          sender.send();
     public MessageProducer createProducer(Session session){
          MessageProducer producer = null;
          String qname = (String) Properties.getInstance().getOtherProps().get(Properties.JMS_QUEUE_NAME);
          try {
               producer = session.createProducer(session.createQueue(qname));
               producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
          } catch (JMSException e) {
               e.printStackTrace();
          return producer;
     public TextMessage createMessage(Session session, String selector){
          try {
               TextMessage message = session.createTextMessage();
               message.setStringProperty(UnitTest.KEY, selector);
               String messageLenAsString = (String) Properties.getInstance().getOtherProps().get(Properties.JMS_MESSAGE_LENGTH);
               int messageLen = Integer.parseInt(messageLenAsString);
               StringBuffer buf = new StringBuffer();
               buf.append(selector).append("-");
               for(int i = 0; i < messageLen; i++){
                    buf.append("x");
               message.setText(buf.toString());
               return message;
          } catch(NumberFormatException e){
               MyLogger.logger.error("bad message length!!");
          } catch (JMSException e) {
               e.printStackTrace();
          return null;
}

If you go here:
http://www.sun.com/software/solaris/get.jsp
and
1.Check Sun Java Enterprise (or the Sun Java Application Platform Suite),
2.Click Get Download and Media
3. Then select Systems for windows (the bar at the top)
I beleive you can get Message Queue 3.6 SP3 from it, by only installing the Message Queue component.
Note: it is a large download (500 Mb for Application Platform), especially for Sun Java Enterprise...
TE

Need a low profile bracket for XtremeGamer card

/?I've recently purchased an SB XtremeGamer sound card which unfortunately came with a regular rear bracket. I need to get the low profile one for my current build. Does anybody know where I can locate one for a decent price? Does Creative carry it any more?
This is the bracket that I need. Thanks.

Hi,
Sorry, I don't think the profile bracket is available through Creative. These brackets are usually included with certain models, but not sold separately.

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Mark Ringo

Hi Mark,
Which transition technologies does the client use to connect the DirectAccess Server?
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For detailed information, please refer to the link below,
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http://technet.microsoft.com/en-us/library/ee844161(v=WS.10).aspx
Best Regards.
Steven Lee
TechNet Community Support

915Pneo2_platinum+P4GhzPrescott+ADATA_DDR2_533 low memory throughput efficiency!

Hello all,
I am confused, because I do not understand, why memory benchmarks(for ex. Sisoft Sandra 2005) show only 3300 MB/s RAM bandwith and also 51% memory throughput efficiency!
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My Software: Windows XP SP2, Bios 1.5, latest MSI drivers, inf driver for 915P intel chipset
Other users with similiar hardware have more than 5000 MB/s memory benchmark and more than 80% memory throughput efficiency!
Can someone explain the reason ?
P.S. I have used different benchmarks (Sandra+Aida32).
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Well, but now (with BIOS V1.4) I have other problems: sometimes (usually after hibernation) system does not start correctly. BIOS freezes before memcheck.(I have to press hard reset button and then system starts correctly.) I tried to disable quick boot option, it helps a little, but problem remains.
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Very low wireless throughput, though bandwidth great for wired LAN (all on a WRT320N)

Hi,
here is my issue: even after a complete reset, I experience very low bandwidth (~192kbps) wireless through my WRT320N router, even though a wired connection (through the router, of course) sees all the bandwidth my ISP provides. Also, my computer says it is on a 300 Mbpn (802.11n) network, so I guess the issue is not about falling back to a downgraded connection after some negotiation. Reception should not be an issue either, nothing changed when I was only an inch from the router...
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Try setting your Beacon Interval to 50, Set Fragmentation Threshold and RTS Threshold to 2304 under Wireless > Advanced Wireless. Save the settings. Reboot your router by unplugging it and plugging it back in.
"The war between heaven and hell depends on the choices we make, and those choices require sacrifice. That's the test"

Low sound throughput....SOLV

Original system...Up to date PC with onboard sound.Recorded from turntable through a pre-amp via Polderbit sound recorder.No problems.A couple of months ago I upgraded to an Audigy? 2 ZS and all is well except recording from the turntable. The pre-amp is connected to the 'line in' but the sound levels are much too low. The pre-amp has an output of 450mV/00k?, 2 x phono.Your help Please. SOLVEDThe sound level was turned down in?'Sounds and Audio Devices.....Play Control'?Thanks anyway?Message Edited by EJB on 04--20070:39 PM

jutapa wrote:
jonathanx wrote:
I get low sound output when I connect the TV Tuner to this port:
align=center><IMG src="http://dri'vextreme.com/images/SoundBlaster-Li've-ct4780_300.jpg">
That connector has only Mic and Headphone Out channels. I suppose you need to connect the audio cable from TV tuner to the AUX connector instead.jutapa
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Lower PC Card slot on 1999 PowerBook (Wall Street)

I have added a USB port via a dedicated PC card. If I insert it in the upper slot it works fine (e.g. I can print), but if I insert it in the lower slot it doesn't (e.g. I can't print). But if I eject the USB PC Card from the lower slot with the computer running, the Finder crashes, as if the lower slot was kind of inoperable, but kind of detected anyway...
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1999 PowerBook (Wall Street) Mac OS 9.1.x

Carlos,
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If the upper slot works properly but not the lower, odds are there is a hardware problem with PCMCIA/CardBus cage; this is the mechanism into which you insert the PC card.
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When you insert the card in the lower slot, does the PC card icon appear on the desktop?
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Brad,
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It appears other people have had this problem. Is this a known problem? SHould I just return it?
(Mod Note: Edited for non-compliance of forum guidelines.)Message Edited by daikunzeon on 12-08-2006 01:46 PM

hi , using wireless N practically , I've noticed that it works best when u have WPA2 encryption with either AES or TKIP ...try that and observe...

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Hello all,
I have searched teh forum and found a few similar threads but I believe my case is different.
For all 3 of my SD cards, they appear as read-only in my MBP (running 10.6.8), whether I connect them via the built-in card reader or via my camera (Panasonic GF1) hooked up to my MBP via USB.
I used to be able to import photos into iPhoto and then delete them from the card but this does not work any more (I do not even get prompted any more) as the card(s) is now read-only (Get Info tells me "Sharing & Permissions: You can only read"). Indeed if I try to delete, drag and drop a file onto it or even erase from disk utility, it will not let me.
Now, most threads dealing with this issue point to the card reader being faulty (or even the lock switch being in the wrong position). I am fairly sure this is not the case here as:
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If you are using a DSLR camera, like for example a Canon 60D, there may be an option to use a "Low-Level Formatting" on the card. This should make it writable when putting it into the computer.
To test this (and confirm it works) I did the following:
Hardware Used:
Canon 60D camera body
Sandisk 32GB SDHC Extreme Card
Macbook Pro 15" (mid 2010 model) with built-in SD card slot.
Steps:
Place SDHC card into camera (SD card may work as well). Navigate through menu until you arrive at settings that allow the camera to format the card. There may be an option to format it "low-level", which you would then select.
-Note that all files on card will be erased permanently.-
After the camera formats, eject the card from the camera, and place inside the built-in SD slot on the Macbook.
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~Charlie~
Owner/Founder HotTips! LLC
http://hottipscentral.com

Memory Error Card!!

My Canon power shot SX 160 IS is only one month old and I am receiving a "Memory Card Error" Help?

Do you low level format the memory card after you transferred the pictures to your computer? If not, do it in the future.
If you have pictures you want to recover from your memory card, use Photorec.
My Swedish blog
X100, 7D, 6D, 17-40/4L, 70-200/2,8L IS II, 17-55/2.8 IS, 24-105/4L, 85/1,8, 50/1,4, 24/1,4L II, Helios 58/2
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German
Hallo,
bin mir nicht sicher wo genau auf welcher Position bei dem Modell MacMini mid 2011 die HDD und SDD angeschlossen werden muss.
Für mich reinlogisch gesehen wegen der Wärmeentwicklung müsste die HDD auf der Upper Pos. sein und die SSD auf der Lower Pos. oder spielt das keine Rolle ?
Würde gerne die Kingston SSD Sata 6 GB/s einbauen und die Hitachi HDD. Dual Kabel Kit besitze ich.
English
Hi,
I'm not sure about which position must the SSD and HDD connected on my MacMini mid 2011.
For my logic, for the heat development must the HDD at the upper position and the SSD in the lower position. Or doesn't matter in which Position are the disk drive are connect.
I would like install the Kingston SSD and Hitachi HDD and an Dual Cable Kit got on my own.

It does not matter. That model was also sold with tow rotating HDs installed.

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I have 4 mac G4s I am using for an installation at a gallery. Two are Sawtooth and the other two I believe are yelp. I need to put additional video cards in them.
I am looking for video cards that can run dual monitors. I have been looking for
mac compatible PCI video cards that run at 2x.
Locally no stores I visited carry mac-compatible graphics cards. I haven't been to the Apple store yet because I have never found a product there that was useful for these machines, they're just too old.
Online I have found at macsales.com
RADEON™ PCI Mac Edition by ATI
for $100
and at yourmacstore.com
ATI RADEON™ 7000 PCI Mac Edition
for $50
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Any suggestions of what kind of card I can use and where I might find them at the best price?
g4 sawtooth and yelp Mac OS X (10.3.9)

The 7000 supports only a single VGA monitor; the Radeon PCI Mac Edition supports one VGA and one DVI monitor connection - you could use a DVI-to-VGA adapter to drive dual VGA monitors.
Both are PCI cards and the performance will be slightly lower than using an AGP card, but you benefit from the savings in cost. Getting four AGP-compatible cards would be much more expensive.
-Douggo

Iphoto wont recognize memory card to load pictures

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If you go to Finder the card is there and i can "select all" and drag them to iphoto. This is really strange - please help?

If your card shows up in the Finder then you can still import from inside iPhoto. Do File > Import to Library, then navigate to the camera card. You can preview the photos, select the ones you want to import, and import them to iPhoto. This is actually my preferred method, since it allows me to choose exactly which photos I want to upload from my camera.
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I don't know why the card suddenly stopped appearing in the iPhoto Source List. One thing you can try is to use your camera to do a low-level format of the card. This has been known to improve a card's performance. The second thing you can try is to delete iPhoto's preference file. Close iPhoto. Use the Finder to navigate to Macintosh HD/ Users/ (your user name)/ Library/ Preferences/ com.apple.iPhoto.plist, then move that file to the trash. You'll have to reset iPhoto's preferences back to your liking after you launch it.

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