Online Threads Atachment Issues

Regards from Sweden,
When I access "Online Threads", if I wish to attach a photo, I am unable to do so as only "My Location" is available. The other choices such as "Picture", "Video", "Voice Note" and "Contact" remain grey and are thus unusable. Is this a common problem and what would be the solution? Another minor problem is the length of online messages. If the message is more of shall we say, "letter size", instead of just a few lines, often the message will not send and I have to break it up into segments and resend. Is there a limit to the length of an online message? Apart from these issues, my Nokia 920 is exellent though my wife's Samsung Ativ8 has far better battery life!
Attachments:
wp_ss_20131014_0001.png ‏51 KB

this is a limitation of the OS.
if you used to use Symbian/maemo/meego devices, then you were able to do this, but not able to on windowsphone.

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Thread Safety Issue with DOM

I am parsing an XML into a DOM object using the Xerces parser that is packaged with JDK 1.5.
First, I create a new instance of the DocumentBuilderFactory and then using the factory, create a new DocumentBuilder. I then parse the XML using the DocumentBuilder to obtain a DOM object.
Somehow, I am seeing the same DOM object being used for different XMLs.
Is there a thread safety issue with the Xerces parser?

certainly, Xerces parser is not thread safe. You have to provide thread safety by making sure that only one thread is allowed to access DocumentBuilder object.

Thread Contention Issue , Help !

public class vipThread implements Runnable
private static volatile boolean lockMe=false;
public synchronized static boolean getLock ()
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public void run ()
synchronized(this)
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getNewRequests is not a synchronized method. Do i need to have it synchronized ? i do have a thread contention issue here. Couple of threds pickup the same request fromt he database.
Help appreciated
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public class vipThread implements Runnable
private static volatile boolean lockMe=false;
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return lockMe;
public synchronized static void setLock (boolean
an lock)
lockMe = lock;
public void run ()
synchronized(this)
if(!this.getLock ()) {
this.setLock(true);
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Help appreciated
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RDBMS non-thread-safe issue

<snip>
This (as you probably know) is due to the fact that the code provided by
most of the DB vendors is not thread safe.
<snip>
Sean's comment, above, speaks to an issue that is causing some concern
within my (large - 180 projects in development) organisation.
May I please ask the forum if there are others out there who have an
understanding of / concern with this "problem"?
My perception (quite possibly flawed) of the "problem" is that the RDBMS
cannot multi-thread data access objects. So we find ourselves in a situation
where we can achieve scaleability in just about all other
performance-sensitive areas of a system's technical architecture (we're
using DCE -- but have found that Encina is not advisable except where there
is a true requirement for heterogeneous distributed 2 phase commit, which we
don't often see.....) but when we go to hit on the RDBMS, we go back to good
ole single-threading.
In certain circumstances, this shortfall of RDBMS technology -- I won't
mention any names, of course, but the initials are "Oracle" -- seems to be
hindering our achievement of a desired technical architecture.
Is this a "Pro*C / PL/SQL stored procedures" problem or is it something that
is in the RDBMSs' DNA?
How can we get around it?
Any comments?
Regards
Jon

Jon
I agree. But it is the best solution within the constraints of existing
technology. At least we don't use a process per client. 10 replicated
copies of a service could service the needs of 100 clients.
Eric
>
At 13:15 6/09/96 EST, you wrote:
Eric
Thanks for your response. Yep. I realise that the issue I've presented is
clearly not something that Forte causes or is responsible for in any way.
Forte can, as you've pointed out, actually help in this area. But I don't
think that getting Forte to spawn another instance of a data access server
is really the best solution. Ie, that's not what we tend to have in mind
when we think about "scaleability". The best solution is -- perhaps -- to
get the RDBMS people to thread-safe all code and libraries. I have pointedly
asked Oracle for a position on this -- and got the usual blank stare.
I also considered whether people might get upset at me for posting what is
clearly a non-Forte-specifc question in a Forte forum. But then I went ahead
and did it anyway. Justification being (assumption follows) that the kind of
people who hang out on the Forte forum may tend to be more
architecture-oriented than your run of the mill VB / SQL*Net / PL/SQL stored
procedures kinda guy/gal, and may be using or considering Forte (plug for
Forte follows) precisely because it clearly enables a superior architecture.
Should proably post to the comp.database.oracle forum, but I just don't know
them as well.
Regards
Jon
From: Eric Gold
To: McLeod, Jon
Cc: [email protected]
Subject: Re: RDBMS non-thread-safe issue
Date: Friday, 6 September 1996 11:21AM
Jon
In response to this message.....read below...
Sean's comment, above, speaks to an issue that is causing some concern
within my (large - 180 projects in development) organisation.
May I please ask the forum if there are others out there who have an
understanding of / concern with this "problem"?
My perception (quite possibly flawed) of the "problem" is that the RDBMS
cannot multi-thread data access objects. So we find ourselves in a situation
where we can achieve scaleability in just about all other
performance-sensitive areas of a system's technical architecture (we're
using DCE -- but have found that Encina is not advisable except where there
is a true requirement for heterogeneous distributed 2 phase commit, which we
don't often see.....) but when we go to hit on the RDBMS, we go back to good
ole single-threading.
In certain circumstances, this shortfall of RDBMS technology -- I won't
mention any names, of course, but the initials are "Oracle" -- seems to be
hindering our achievement of a desired technical architecture.
Is this a "Pro*C / PL/SQL stored procedures" problem or is it something that
is in the RDBMSs' DNA?
How can we get around it?
Any comments?Jon,
Go ahead ask the Forum any questions you want. This "problem"
is not a problem in Forte. What we allow you to do is "replicate" your
data access services so that each one runs inside its own
process. Each one of these processes (aka partitions) has its
own connection to the database. The routing to the replicated
partitions is transparent to the clients. Clients send a
message like "DatabaseService.GetCustomer()" and then the Forte
router sees which replicated copy of the service is not currently
processing a request and routes it to that free replicate. You
can dynamically increase or decrease the number of replicated
copies of the service easily.
We call this feature "load balancing" in Forte. It is achieved
by checking a box in the data access service object definition.
You can dynamically increase/decrease the number of replicates
and also dynamically move replicates to other nodes in the environment.
This approach assumes that you are using application driven
security and not database security. Each replicated copy
of the service is using the same generic username/password
to connect to the database.
I am forwarding this answer to forte-users because others
might not completely understand this feature.
Eric
Eric Gold
Technical Director
Forte Australia
Voice: 61-2-9926-1403
Fax: 61-2-9926-1401
Eric Gold
Technical Director
Forte Australia
Voice: 61-2-9926-1403
Fax: 61-2-9926-1401

Status keeps changing from invisible to online: why the issue is ignored?

There is a serious issue raised in the parallel thread, which is critical for many people: "Status keeps changing from invisible to online" (initiated on ‎16-11-2014 by b.agne, Mac section). In short, when starting using a device, the Skype status changing from "invisible" to "online" - sometimes just for a moment, though enough for others to notice you. These affects very much any type of devices. I am sure the issue has already led to multiple personal crisises and potentially financial losses due to buseness partnership issues (I came close to that myself, and now use anything but Skype for business). The question is: WHY the issue is completely ignored by Skype, Microsoft and expert comunity? Please post the solution if anybody knows how to fix the issue, or suggest how to make Microsoft to know that it should be fixed. Kind regard...

Hi, I also have the same issue. I change the status to Invisible and a later on it is already as "Online", without having even touched/opened Skype. The only way that I see this may happen is that I have the app installed on the smartphone, but before it never had this issue, but from some month ago it started. Any correction or suggestion to work around this issue? Regards

JRun Thread Pool Issue

I'm running CF 9.0.1 on Ubuntu on an "Medium" Amazon EC2 instance. CF has been crashing intermittently (several times per day). At such times, running top gets me this (or something similar):
PID
USER
PR
NI
VIRT
RES
SHR
S
%CPU
%MEM
TIME+COMMAND
15855
wwwrun
20
0
1762m
730m
20m
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99.3
19.4
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java.lang.RuntimeException: Request timed out waiting for an available thread to run. You may want to consider increasing the number of active threads in the thread pool.
If I run /opt/coldfusion9/bin/coldfusion status, I get:
Pg/Sec DB/Sec CP/Sec Reqs Reqs Reqs AvgQ   AvgReq AvgDB Bytes Bytes
Now Hi Now Hi Now Hi Q'ed Run'g TO'ed Time   Time   Time   In/Sec Out/Sec
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However, there's also this file /opt/coldfusion9/runtime/servers/coldfusion/SERVER-INF/jrun.xml. And some of the settings in there appear to conflict. For example, it reads:
<service class="jrunx.scheduler.SchedulerService" name="SchedulerService">
<attribute name="bindToJNDI">true</attribute>
<attribute name="activeHandlerThreads">25</attribute>
<attribute name="maxHandlerThreads">1000</attribute>
<attribute name="minHandlerThreads">20</attribute>
<attribute name="threadWaitTimeout">180</attribute>
<attribute name="timeout">600</attribute>
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<attribute name="port">8500</attribute>
<attribute name="interface">*</attribute>
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<attribute name="activeHandlerThreads">200</attribute>
<attribute name="minHandlerThreads">1</attribute>
<attribute name="maxHandlerThreads">1000</attribute>
<attribute name="mapCheck">0</attribute>
<attribute name="threadWaitTimeout">300</attribute>
<attribute name="backlog">500</attribute>
<attribute name="timeout">300</attribute>
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This appears to have changed when I changed the CF Admin setting...maybe...but it's the activeHandlerThreads that matches my new maximum simulataneous requests setting...rather than the maxHandlerThreads, which again exceeds it. Finally, we have this:
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<attribute name="activeHandlerThreads">200</attribute>
<attribute name="minHandlerThreads">1</attribute>
<attribute name="maxHandlerThreads">1000</attribute>
<attribute name="mapCheck">0</attribute>
<attribute name="threadWaitTimeout">300</attribute>
<attribute name="backlog">500</attribute>
<attribute name="deactivated">false</attribute>
<attribute name="interface">*</attribute>
<attribute name="port">51800</attribute>
<attribute name="timeout">300</attribute>
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</service>
So, I'm not certain which (if any) of these I should change and what exactly the relationship is between maximum requests and maximum threads. Also, since several of these list the maxHandlerThreads as 1000, I'm wondering if I should just set the maximum simultaneous requests to 1000. There must be some upper limit that depends on available server resources...but I'm not sure what it is and I don't really want to play around with it since it's a production environment.
I'm not sure if it pertains to this issue at all, but when I run a ps aux | grep coldfusion I get the following:
wwwrun   15853 0.0 0.0   8704   760 pts/1
S
20:22   0:00 /opt/coldfusion9/runtime/bin/coldfusion9 -jar jrun.jar -autorestart -start coldfusion
wwwrun   15855 5.4 18.2 1678552 701932 pts/1
Sl
20:22   1:38 /opt/coldfusion9/runtime/bin/coldfusion9 -jar jrun.jar -start coldfusion
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So, anyway, I've been experimenting while composing this post. As noted above I adjusted the maximum simulataneous requests up to 200. I was hoping this would solve my problem, but CF just crashed again (rather it slogged down and requests started timing out...so effectively "crashed"). This time, top looked similar (still consuming more than 99% of the CPU), but CF status looked different:
Pg/Sec DB/Sec CP/Sec Reqs Reqs Reqs AvgQ   AvgReq AvgDB Bytes Bytes
Now Hi Now Hi Now Hi Q'ed Run'g TO'ed Time   Time   Time   In/Sec Out/Sec
0   0   0   0   -1 -1 0     150   0     0      0      0      0      0
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Further experiments (after restarting CF) showed me that the server became unusably slogged after about 30-35 "Reqs Run'g", with all additional requests headed for an inevitible timeout:
Pg/Sec DB/Sec CP/Sec Reqs Reqs Reqs AvgQ   AvgReq AvgDB Bytes Bytes
Now Hi Now Hi Now Hi Q'ed Run'g TO'ed Time   Time   Time   In/Sec Out/Sec
0   0   0   0   -1 -1 0     33    0     0      -492   0      0      0
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~Day

I really appreciate your help. However, I haven't been able to find the JRun Thread settings you describe above.
Under Request Tuning, I see:
Server Settings > Request Tuning
Request Limits
Maximum number of simultaneous Template requests
Restricts the number of simultaneously processed requests. Use this setting to increase overall system performance for heavy load applications. Requests beyond the specified limit are queued. On Standard Edition, you must restart ColdFusion to enable this setting.
Maximum number of simultaneous Flash Remoting requests
The number of Flash Remoting requests that can be processed concurrently.
Maximum number of simultaneous Web Service requests
The number of Web Service requests that can be processed concurrently.
Maximum number of simultaneous CFC function requests
The number of ColdFusion Component methods that can be processed concurrently via HTTP. This does not affect invocation of CFC methods from within CFML, only methods requested via an HTTP request.
Tag Limit Settings
Maximum number of simultaneous Report threads
The maximum number of ColdFusion reports that can be processed concurrently.
Maximum number of threads available for CFTHREAD
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And under Java and JVM, I see:
Server Settings > Java and JVM
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   Backups of the jvm.config file are created when you hit the submit button. You can use this backup to restore from a critical change.
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Specifies the location of the Java Virtual Machine.
   Minimum JVM Heap Size (MB)         Maximum JVM Heap Size (MB)
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   ColdFusion Class Path
Specifies any additional class paths for the JVM, with multiple directories separated by commas.
   JVM Arguments
-server -Dsun.io.useCanonCaches=false -XX:MaxPermSize=192m -XX:+UseParallelGC -Xbatch -Dcoldfusion.rootDir={application.home}/../ -Dcoldfusion.libPath={application.home}/../lib
Specifies any specific JVM initialization options, separated by spaces.
I did go take a look at FusionReactor and found it's not free (which would be fine, of course, if it would actually help). It looks like there's a fully functional demo, which is cool...but I've haven't been able to get it to install yet, so we'll see.
Thanks again!
~Day
(By the way, I've cross-posted this inquiry on StackOverflow. So if you're able to help me arrive at a solution you might want to answer there as well.)

Thread Dump issue with LD_ASSUME_KERNEL=2.4.1

Hi ,
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Thread Dump Output:
Caused by: sun.jvm.hotspot.debugger.DebuggerException: get_thread_regs failed for a lwp
at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal.getThreadIntegerRegisterSet0(Native Meth
od)
at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal.access$800(LinuxDebuggerLocal.java:34)
at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal$1GetThreadIntegerRegisterSetTask.doit(Li
nuxDebuggerLocal.java:431)
at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal$LinuxDebuggerLocalWorkerThread.run(Linux
DebuggerLocal.java:109)
sun.jvm.hotspot.debugger.DebuggerException: sun.jvm.hotspot.debugger.DebuggerException: get_thread_re
gs failed for a lwp
at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal$LinuxDebuggerLocalWorkerThread.execute(L
inuxDebuggerLocal.java:134)
at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal.getThreadIntegerRegisterSet(LinuxDebugge
rLocal.java:437)
at sun.jvm.hotspot.debugger.linux.LinuxThread.getContext(LinuxThread.java:48)
at sun.jvm.hotspot.runtime.linux_x86.LinuxX86JavaThreadPDAccess.getCurrentFrameGuess(LinuxX86
JavaThreadPDAccess.java:75)
at sun.jvm.hotspot.runtime.JavaThread.getCurrentFrameGuess(JavaThread.java:252)
at sun.jvm.hotspot.runtime.JavaThread.getLastJavaVFrameDbg(JavaThread.java:211)
at sun.jvm.hotspot.tools.StackTrace.run(StackTrace.java:42)
at sun.jvm.hotspot.tools.JStack.run(JStack.java:41)
at sun.jvm.hotspot.tools.Tool.start(Tool.java:204)
at sun.jvm.hotspot.tools.JStack.main(JStack.java:58)
Caused by: sun.jvm.hotspot.debugger.DebuggerException: get_thread_regs failed for a lwp
at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal.getThreadIntegerRegisterSet0(Native Meth
od)
at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal.access$800(LinuxDebuggerLocal.java:34)
at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal$1GetThreadIntegerRegisterSetTask.doit(Li
nuxDebuggerLocal.java:431)
at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal$LinuxDebuggerLocalWorkerThread.run(Linux
DebuggerLocal.java:109)
sun.jvm.hotspot.debugger.DebuggerException: sun.jvm.hotspot.debugger.DebuggerException: get_thread_re
gs failed for a lwp
at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal$LinuxDebuggerLocalWorkerThread.execute(L
inuxDebuggerLocal.java:134)
at sun.jvm.hotspot.debugger.linux.LinuxDebuggerLocal.getThreadIntegerRegisterSet(LinuxDebugge
rLocal.java:437)

@brain0
I've downloaded the glic-2.3.6 sources from gnu, so I could build it from those. I'm however reluctant to do this because I really don't want to break my install.
I do agree with you on the NPTL statement, but pvs relies on allegro, which relies on LinuxThreads. Allegro is not being ported to new versions of glibc, so that approach is unfortunately not viable.
@iphitus
I wasn't very specific - it's allegro as in a lisp environment.
I think I'll try and install an old version of arch on wmware instead. Is there anywhere you can check out glibc version numbering on old arch install isos (ie. do I need arch-0.[1-9].iso)? And anywhere you can download the old isos (tried filewatcher, but a lot of the older sites seem broken)?
Thanks for the replies,
Mads
PS. I noticed that you recommended slackware for old kernels in another thread. I'm however in a bit different situation as I need old versions of glibc. Furthermore I would prefer sticking to arch, but was wondering whether there were any specific reasons for not doing that.

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I am moving this question to another area. I see I posted it under Optical Drive

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Look in httpd.conf file anything that is like thread in there you will find a simple description of the Directives.
Greetings.

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Hi,
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Does SimpleDateFormat still have Thread Safety Issue in jdk 1.4.2_8?

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Here is the piece of code.
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public Object convert(Class type, Object inValue) {
if(inValue == null)
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if (inValue instanceof Date) {
ret.setDate((Date)inValue);
} else if (inValue instanceof String) {
String str = inValue.toString();
if (str != null && str.length() > 0) {
DateFormat format = DateFormat.getDateTimeInstance();
format.setLenient(true);
try {
ret.setDate(format.parse(str));
} catch (ParseException e) {
try {
ret.setDate(DATE_FORMAT.parse(str));
} catch (ParseException e1) {
throw new DateConversionException("Unable to convert the String to NFDate. " +
"Exception: " + e + " - expected format is (" + format.format(new Date()) + ")", e1);
else {
if (!ret.getIsNullDate()) ret.reset();
} else {
String msg = "Conversion from " + inValue.getClass().getName() + " to " + NFDate.class.getName() +
" is not supported";
throw new DateConversionException(msg);
return ret;
Thanks much in advance.
Saikat

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