AWOL FireWire Bus can cause performance problems

This is a tip for anyone who may be having undiagnosed performance problems. Use System Profiler and look at the FireWire entry. If there is no information other than the title FireWire Bus that may be the cause of the problem.
See http://docs.info.apple.com/article.html?artnum=88338 for information. I was able to fix my performance problems by disconnecting my iMac from power and everything except mouse and keyboard.
I've written a small AppleScript which run System Profiler each day and will alert me to a missing FireWire Bus. I hope it never happens again.

Yup, resetting the NVRAM seems to fix a lot of
HD/firewire problems.
I am not even using firewire so I didn't have any firewire problems (as such). My problems seemed primarily to be performance related ... I assume the OS was spending a lot of cycles trying to check the status of the Firewire Bus.

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I cannot control the sensor on my Mac, it moves by itself, and opens different pages. What can cause this problem? please help me.

I cannot control the sensor on my Mac, it moves by itself, and opens different pages. What can cause this problem? please help me.

There are several possible causes for this issue. Take each of the following steps until it's resolved.
1. Follow the instructions in this support article.
2. Reset the System Management Controller.
3. If you're using a Bluetooth trackpad, investigate potential sources of interference, including USB 3 devices.
4. A swollen battery in a MacBook Pro or Air can impinge on the trackpad from below and cause erratic behavior. If you have trouble clicking the trackpad, this is likely the reason. The battery must be replaced.
5. There's a report that a (possibly defective) Thunderbolt Ethernet adapter can cause the built in trackpad of a MacBook to behave erratically. If you're using such an adapter, disconnect it and test.
6. There's also a report of erratic cursor movements caused by an external display that was connected but not turned on.
7. If none of the above applies, or if you have good reason to think your computer is being controlled remotely, remove it from the network by turning off Wi-Fi, disconnecting from a Bluetooth network link, and unplugging the Ethernet cable or USB modem, whichever is applicable. If the cursor movements stop immediately, you should suspect an intrusion.

Load balancing issue causes performance problems!

Hi
Can someone tell me if there is a way to find the list of users who are logging into the system directly (without using a logon group)? They are hitting the CI which is causing performance issues. Eventhough we've setup system messages and repeated emails its hard to track who aren't following it.
Any ideas would be really appretiated rewarded with points.
Thanks
Arun

easy:
on the CI, change rdisp/gui_auto_logout to 60.
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and if they keep on trying, lock their account into SU01... they will get the message.
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RTMFMessaging causes performance problem

Hi,
We have a performance problem with the component:
EP:KM:COLL:class com.sap.ip.collaboration.core.api.rtmf.core.RTMFMessaging.ReceiveJMSQueue
This component according to the Request overview is executing literally billions of requests each day. It is also not closing many of the requests. I wondered if anyone could give some hints as to performance settings for RTMF in a load-balanced landscape that would prevent this behaviour?
We have a Central Instance with 3 nodes, each running a web dispatcher and 4 application servers in a load-balanced environment - so it's meant to be a high availability Portal until this problem makes it fall over!
The symptoms are also that the performance degrades over time as the RTMF requests are not always closed, until they consume enough resources that the system stops responding.
Any help would be appreciated.
Thanks, Marc

Hi
As one of the authors has mentioned previously this is not a problem but the way RTMF framework works. It has a polling mechanism that polls the server for messages.
By default this polling mechnism is set to Constant Interval which is set to 3 seconds. So the RTMF will poll the server for messages every 3 seconds. However, depending on the number of users etc this polling mechanism can be changed to Linear Interval or maximum HPS (see SAP Help for further information).
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Cheers
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List versions causing performance problems

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The performance is similar when we open the Version History window for any one Item. We also tried using PowerShell to load a List Item's Versions and it, too, behaves the same...about 1s delay for each version an
Item has.
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Created PDFs for the results for the first two -
dbcc show_statistics(AllUserData,AllUserData_PK)
dbcc show_statistics(AllUserData,AllUserData_ParentID)
Here are the results to the Select statement:
select name,alloc_unit_type_desc,avg_fragmentation_in_percent from…
name
alloc_unit_type_desc
avg_fragmentation_in_percent
AllUserData_ParentId
IN_ROW_DATA
29.15961419
AllUserData_ParentId
LOB_DATA
0
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Mailbox move from 2007 to 2010 causes performance problems on the 2007 box AFTER the move

I'm having a problem where moving a mailbox from our 2007 Exchange server to our 2010 Exchange server is causing clients that are still on the 2007 server to lock up, sometimes for up to 20 minutes. This all happens maybe 5 minutes *after* the mailbox
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I start seeing events 5015, 5016, and then 10025 on the 2007 box and that's when users start complaining of Outlook locking up and emails going to Outbox.
If I do this off-hours like at night or on weekends I don't see the problem, which I'm sure is because there are far fewer clients connected. We do not use cached exchange mode for a variety of reasons but mainly because our document management software
doesn't play nicely with it.
I am leaning toward the disk structure of our 2007 server. They are fast (15k SAS) but arranged in a RAID-5 which isn't ideal, but which keeps up fine in all other cases. What is happening post-move that makes for so much disk activity? I
thought maybe if I moved a good chunk of users off the 2007 box off-hours it might make daytime moves more possible, but I just tried again and it all locked up just the same.
The details:
Exchange 2007 SP3 (15k SAS disks, 2x quad core Xeon E5345, 16GB RAM)
Exchange 2010 (VMware with 4 virtual cores, 16GB RAM, storage on EqualLogic SAN)
Clients are almost exclusively Outlook 2010 on Win7, though a handful of 2007 users remain.
We have about 240 users total, about 100 of which have moved to the 2010 system.
Thanks for any suggestions. I am stumped at this point.

Hi,
Based on my experience, the issue generally happens during the migration the old server didn’t get pulled from Active Directory correctly .
http://www.squidworks.net/2013/02/solved-event-ids-5015-5016-microsoft-exchange-2010-cannot-find-a-route-to-the-source-transport-server-or-home-mta-server/
Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please make
sure that you completely understand the risk before retrieving any suggestions from the above link.
Thus, please check if the issue still can be reproduced after the migration.
If you have any question, please feel free to let me know.
Best regards,
Angela Shi
TechNet Community Support

"blued" process causing performance problems (98% CPU use)

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Hi Evan,
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JSP causes serious performance problem in my EP

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Hi Umair,
the code is:
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<%
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<%
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%>

<%
catch(Exception e){
%>
<%
finally{
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          if(Connselect_localidade != null) Connselect_localidade.close();
     catch(Exception e){
%>
Thanks,
Yuri.

Can MDAC installation cause navigation problems within the portal?

Hello,
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http://help.adobe.com/en_US/dreamweaver/cs/using/WScbb6b82af5544594822510a94ae8d65-7c44a.h tml
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Buffer Gets : 26 million !!!
Rows : 750,000
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Any ideas will be appreciated ?
thanks

897208 wrote:
I have a simple INSERT ( INSERT into TABLE values ( :1, :2 ) etc. )
But this statement is exhibiting following characteristics
Optimizer Cost : 1
Buffer Gets : 26 million !!!
Rows : 750,000
Gets/Execution : 35,000
This is causing performance problem on our production.
Any ideas will be appreciated ?
thanksThread: HOW TO: Post a SQL statement tuning request - template posting
HOW TO: Post a SQL statement tuning request - template posting
post EXPLAIN PLAN & results from SQL_TRACE this statement

Java 1.4.2 swing (setBounds) performance problem

Hi,
We were having performance problems with swing ever since we moved to java 1.4.2 and we finally switched back to 1.4.1. However, we have now traced the problem to JVM and the following simple code demonstrates it.
I would like to hear from others who faced or solved this.
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Without it, the performance is good. The performance is good with 1.4.1 as well.
Code sample for JComponentTest :
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class JComponentTest extends JFrame {
public final static int MAX_JLBL = 50;
private static double _clicked = 0.0;
// pop up window
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private JCheckBox[] _configArray = new JCheckBox[MAX_JLBL];
private JButton _toggle = new JButton("update");
public JComponentTest() {
setTitle("JLabelTest");
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setBounds(1278, 4, 203, 361);
getContentPane().add(_configPanel);
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_configArray[i] = new JCheckBox("cb"+i);
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_toggle.addActionListener(new ConfigListener());
setVisible(true);
// listenres
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(1);
} // end constructor
public static void main(String[] args) {
new JComponentTest();
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* fields.
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public void actionPerformed(ActionEvent ae) {
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weebib
We are using Windows XP , Nvidia graphics card, with Multiview. I hope the problem is not specific to the platform.
It is reproducible with 1.4.2 and absent in 1.4.1
camickr
I am new to this forum. didn't know about code blocks.

Performances Problem in XI using RFC

Hi All,
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Hi
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Hi All,
when we call a FM .. all the function modules which are present in that function group will be copied into the Main memory .
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Regards,
Sravan.

you should analyse your problem more carefully before asking:
+ you can have performance problems related to the execution of function modules.
+ you can also have memory related performance problems by loading huge function groups (non standard).
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Siegfried

Problem with firewire bus

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unplugging is not 100% reliable resetting the SMC.
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The older models like 3,1 all had different directions when they came out (1,1 and 2,1 even have a physical SMC button yu can access and use).

Firewire: What's causing bus resets?

I bought a 500GB LaCie d2 Big Disk Extreme to act as a back-up device, and in the week and a half I've had it, I've managed to back-up absolutely nothing. It copies files for a while, but eventually, all activity will slow, and cease. The system freezes, and the only recourse is to either: hard reset the Powerbook by holding down the power button, or pull the Firewire cable. Either activity will usually result in data loss and a massive waste of time.
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I've looked at system logs and one thing stands out like a sore thumb. Everytime the drive activity has ceased, it's because something's caused a cascade of bus resets. Look at this:
Aug 28 11:33:30 Powerbook kernel[0]: FireWire (OHCI) Apple ID 31 built-in: 992 bus resets in last minute.
Aug 28 11:36:42 Powerbook kernel[0]: FireWire (OHCI) Apple ID 31 built-in: 312 bus resets in last minute.
Aug 28 11:39:54 Powerbook kernel[0]: FireWire (OHCI) Apple ID 31 built-in: 1341 bus resets in last minute.
Aug 28 11:43:06 Powerbook kernel[0]: FireWire (OHCI) Apple ID 31 built-in: 4518 bus resets in last minute.
Aug 28 11:46:18 Powerbook kernel[0]: FireWire (OHCI) Apple ID 31 built-in: 3988 bus resets in last minute.
Aug 28 11:49:30 Powerbook kernel[0]: FireWire (OHCI) Apple ID 31 built-in: 3069 bus resets in last minute.
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Aug 28 11:52:42 Powerbook kernel[0]: FireWire (OHCI) Apple ID 31 built-in: 1218 bus resets in last minute.
Aug 28 11:55:54 Powerbook kernel[0]: FireWire (OHCI) Apple ID 31 built-in: 1494 bus resets in last minute.
Aug 28 11:59:06 Powerbook kernel[0]: FireWire (OHCI) Apple ID 31 built-in: 2005 bus resets in last minute.
Aug 28 12:02:18 Powerbook kernel[0]: FireWire (OHCI) Apple ID 31 built-in: 1842 bus resets in last minute.
Aug 28 12:02:37 Powerbook kernel[0]: Bad SelfID packet 2: 0x0 != 0xffffffff!
Aug 28 12:05:30 Powerbook kernel[0]: FireWire (OHCI) Apple ID 31 built-in: 6518 bus resets in last minute.
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EDIT: Well, it's most likely the drive itself that's at fault, copying 100+GB to a different drive caused no problems and no resets whatsoever, so clearly it's not the computer or 10.4.2 causing trouble.

Hi,
What would cause my PoweBook G4 (OS9.2.2) to freeeze everytime I connect a FireWire (400) device.
Everything was working fine untill I recently daisychained my SmartDisk VST CD-R/W to the d2 external drive and connected that to my poerbook.
All devices mount and work fine when connected to my G5 powermac.
I have updated the Authoring Support.
Any advice out there would be very much appreciated.
Thanks
Marcus

AWOL FireWire Bus can cause performance problems

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