Trying to understand user load

Hello all
running Exchange 2013 sp1 CU8. CAS role are running on dedicated separate box from mailbox role. To get a general understanding of user load on my CAS servers i am running perf mon using the below counter. Is this a good counter to use that will
give me a general understanding on how much work the CAS servers are doing regarding user load?
Web Service(Default Web Site)\Current Connections
Shows the current number of connections established to the Default website which corresponds to the number of connections hitting the Front End CAS server role. Determines current user load.
Bulls on Parade

Hi skipster,
Yes, this is a good counter to determine current user load, but not all. There are also some other user loads you should understand, like OWA, ActiveSync ..
I recommend you refer to the following article, it will give you some hints about understanding user load:
How many users are connected to Exchange per protocol?
Best regards,
Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact [email protected]
Niko Cheng
TechNet Community Support

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Trying to understand "User/Role/Profile Synchronization" and Batch Analysis

Hello,
Im trying to understand what exactly and from which tables these jobs are copying to which tables in CC. I have a understanding that these jobs are moving also deleted roles from backend. This is causing unnecessary delay to long lasting job.
I would appreasite if some one could explain the logic behind these jobs. What the fullsync and incremental is reading ? What kind of changes are causing a role/user/profile to be included to the full and incremental jobs?
How the incremental analysis logic is built ?
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Janne,
In my current implementation we are going for an offline risk analysis due to the heteregoneus system landscape of our client (several SAP and non SAP systems and several SAP systems under 4.6C). Eventhough within our approach we don't perfrom the backend synchronization (we use CC data extractor to pull data from backend into CC) hope the following info could hel you:
The tables such jobs you mention access to, are all the SAP backend system tables related with users, roles, profiles, action and permissions. If you check the data mapping appendix of the "user and configuration guide for 5.2" you will see all the data that CC retrieves. For instance, in order to extract user info (UserID, FName, LName, Email, Phone, Email, Department) tables USR21, USR02, ADRP, ADR6 and ADCP must be accessed.
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'User is Locked' error while trying to start initial load

While trying to start initial load of objects using R3AS, I am receiving error msg 'User is locked'. This rfc user is a dialog user with SAP_ALL. I even tried replicating using a new user, but ended up with same error. The user is not locked but still getting the same error msg via status 'SYSFAIL' in the queue. Any suggestions?
Thnx,
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AJ,
The RFC user must be a <b>communication user or a system</b> user. I think you mentioned the RFC user is a dialog user, which would be wrong settings definitely.
Also as mentioned by Marcin, ensure the passwords in the RFC destination of SRM and R/3 are the same as the passwords in SU01 of the respective systems. To ensure this, click on remote logon for the RFC destination in SM59. If the screen doesnot change, this means your systems are connecting through the RFC user without any problem.
Please assign points, if answer is usefull !!
Sundeep

Hello, World - trying to understand the steps

Hello, Experts!
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<mx:Module xmlns:mx="http://www.adobe.com/2006/mxml" implements="acrobat.collection.INavigator" height="100%" width="100%" horizontalScrollPolicy="off" verticalScrollPolicy="off" >
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Hello, Experts!
I am pretty new to Flash Development, so I am trying to understand how to implement the following steps using Flash environment
http://pdfdevjunkie.host.adobe.com/00_helloWorld.shtml
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<mx:Module xmlns:mx="http://www.adobe.com/2006/mxml" implements="acrobat.collection.INavigator" height="100%" width="100%" horizontalScrollPolicy="off" verticalScrollPolicy="off" >
Step 2: Create your user interface elements. In this example, I'm using a "DataGrid" which is overkill for a simple list but I'm going to expand on this example in the future. Also notice that I'm using "fileName" in the dataField. The "fileName" is a property of an item in the PDF Portfolio "items" collection. Later when we set the dataProvider of the DataGrid, the grid will fill with the fileNames of the files in the Portfolio.
<mx:DataGrid id="itemList" initialize="onInitialize()" width="350" rowCount="12"> <mx:columns> <mx:DataGridColumn dataField="fileName" headerText="Name"/> </mx:columns> </mx:DataGrid>
Step 3: Respond to the "initialize" event during the creation of your interface components. This is important because there is no coordination of the Flash Player's initialization of your UI components and the set host(), so these two important milestone events in your Navigator's startup phase could occur in either order. The gist of a good way to handler this race condition is to have both your INavigator.set host() implementation and your initialize() or creationComplete() handler both funnel into a common function that starts interacting with the collection only after you have a non-null host and an initialized UI. You'll see in the code samples below and in step 4, both events funnel into the "startEverything()" function. I'll duscuss that function in the 5th step.
               private function onInitialize():void { _listInitialized = true; startEverything(); }

Trying to understand Android OS updates delays

This is not another hate mail, it´s more about trying to understand the facts and motives regarding the OS updates (or lack of).
Hopefully this material will arrive at someone from Sony with enough power to do something about it.
Ever since I can remember, Sony has been THE brand for electronics. I can´t remember a TV or VCR in my house that it wasn´t Sony, and they lasted for LOTS of years.
When a couple years ago I finally had the money (and the need) for a Smartphone, i chose the X10 Mini, which is a great little phone from a great brand, but it´s stuck at Android 2.1... which makes it a crippled android nowadays...
It really bothered me the lack of OS updates, so I chose to buy a Galaxy Nexus, but it´s really expensive in my country. So my second option was a Galaxy Ace 2, but they haven´t arrived to my country yet, so I went with my third option: Xperia Sola, knowing beforehand that it´s a great phone, a great brand, but I might get slow OS updates.
I bought it about 10 days ago when I saw they were starting to roll out the updates.
10 days later I still don´t have my update. And not only that, but I don´t see much light at the end of the tunnel...
I found a thread with the SI numbers that were updated, and there were a bunch on Oct 1, another bunch on Oct 4, and one code on Oct 8, and no other update since...
I also read that those who did get the update, were having bugs with the OS, and also found threads from other Xperia models, whose updates began rolling 3 months ago, and there is still people who hasn´t gotten the update...
As a customer, and a owner/CEO of a small company, I have a really hard time understanding how a HUGE company like Sony can be making such mistakes...
I have been thinking objective reasons, and I can only think of one. I know it´s a wild guess, but I´m starting to think that our salvation might be the very thing that means our condemnation: CYANOGENMOD!!!
Think about it: Why would Sony spend more money hiring twice as much programmers, when they can make only one update per phone, and sit down and see how CM releases begin to appear, for all tastes and needs. And... IT´s FREE!!!
Also, if there is a software related problem (way more likely than a hardware problem), then the CM developers take the fall, instead of Sony. And I´m beginning to see custom OS installers that are more user friendly, so it might be something that they take in accout when neglecting OS updates.
If that´s the line Sony is following, it´s a very risky move and it won´t work. Sony Mobile will crash and burn, but it´s still a better business plan that "let´s get lazy and make ULTRA slow updates so we don´t spend a lot of money programming".
If you can´t afford more programmers, stop including so much bells and whistles and make your OS near vanilla. Include a couple of Xperia menus, a custom theme and voila!
The main reason I wanted the Galaxy Nexus is Vanilla OS, which means inmediate OS updates. Sony on the other hand, takes a year or two to release it after its launch. If they release it at all...
Another though... why not stop making that many different phones! Really! There are like 5 Xperia models i can´t tell one from the other... even with specs side by side!
You are trying to make too many phones and you are failing with all of them! (Software and software updates are also part of the phone, one of the most importants...)
I know hiring programmers is expensive, but you are sacrificing one of the most expensive values for a company EVER: Customer credibility! Which as you know better than me, takes years to create.
If Apple had problems with carriers and code aprooving and stuff, they might get away with it, becouse they alone have all the devices. If iOS 6 is delayed a few months, it´s delayed for everyone, and besides Apple fanboys rarely complain about Mac products, but Android is a more independent and educated market.
I´m not saying that Apple users are ignorant, not at all, but I´m pretty sure most iPhone owners don´t even know what processor or how much RAM their phone has. They just "swallow" the Apple Way of Life. (it´s a good phone becouse Apple says so).
The Android user on the other side, because of the fragmentation of the market, has many brands and models to choose from. An Android user about to buy a new phone will most likely go online looking for different models, specs, reviews in webs and forums...etc.
You can´t say "I don´t know how HTC and other companies get their updates so soon, but we take a lot more becouse Google and the Operators must aproove the code.", because there are many other brands that have exactly the same difficulties or more, since they are smaller, and we can SEE online that they are indeed delivering solid and relativly fast updates.
Did we miss something? Does HTC use Witchcraft to get their code aprooved?
My underlying point is this: You are getting lazy... VERY lazy with software programming for your phones, and WE KNOW IT!
It´s not the "difficulties" you claim, becouse every brand has those difficulties.
This isn´t 1999 you know. We are in the information age. If you lie to us and tell us that your phones have the latest OS, I can go online and see that you don´t (Hello!!!). If I see that the company lies to it´s customers, I will stop buying their products. If I´m so dissapointed with how Sony handles OS updates and their customers queries about it, then I want for the first time ever to sell my Cell Phone becouse I´m not happy with it, or the brand behind it.
We also live in the "Here and now" age. You can´t expect your customers to read about new Android releases on news and blogs, and wait YEARS with arms crossed waiting for their update... The world doesn´t work like that. Not anymore at least...
It´s not a matter of how many recources you have, it´s about how you use and balance them. GIVE MORE IMPORTANCE TO SOFTWARE UPDATES! IT´S WAY MORE IMPORTANT THAT YOU THINK! LISTEN TO YOUR CUSTOMERS!!!
You guys are Sony are smart and design great products, but you are not GOD! You are not our wife, no one has sworn alliagence to you.
If you stop giving us good products and start lying to us, we hate you and stop giving you our money. Simple as that.
My sola is beatiful, I love the design, the screen, the hardware... but it hasn´t been updated yet to 4.0, not to mention 4.1, which REALLY is the latest version... so stop advertising that your phones have the latest Android OS, unless you want angry customers switching to other companies, which you are getting.
I also read some stories that Androind 4.0 was announced for the Xperia PLAY, and then it was called off... Do you have any idea how pissed I would be and ripped off I would be if I bought my phone based in that information and then you say it won´t be available?
Well, actually right now my possition is worse, since you SAY you will update my phone, but you don´t say when, and I read online about people still not getting their updates months after the rollout started, so I´m in the limbo right now...
As a company, one of the worse things you can do is calling your customers stupid, and when I see the answers you give in this forum, then I feel insulted. I feel like they are talking to an idiot or ignorant person with the so called "diplomatic" answers, which are basicly empty excuses for not doing your job right.
You gave us the frikking CDs, DVDs and Blu-Rays!!! Don´t tell us you can´t tweak an already built OS in a year!
I really hope you change their OS update policies really soon, before you lose the already small cellphone market share you have, or at least change your P.R. and C.M. policies towards a more open one.
We all are humans and make mistakes, but we customers really appreciate honesty and truth.
Have an open conversation with your customers! Don´t lie about your shortcomings! Accept then and ask the community to help you solve them, ask them what they biggest problems are, what features are most important to them, how often do they expect updates... LISTEN TO THEM!!
"Succes is a meneace. It tricks smart people into thinking they can´t lose."
Ps: Nothing personal with the mods from this forum, I´m not killing the messenger, I know that you can ONLY give the info you are allowed to give, and even if you wanted, you probably don´t know the answers yourself, since you work in the Communications department, not Developement or anything technical, and if you can't give any given info, then they probably won´t give it to you either... My message is to the company as a whole. I just hope you will be a good messenger and give this to whoever needs to read it.

My bad, it´s closer to 40 the number of phones released hehe
I know it´s all about money, and I know Sony is obligated to neglect users who haven´t given them money after an x ammount of time. However, it´s not a matter of making the phones obsolete earlier, so the users want to buy a new phone faster and therefore getting more money.
A person will buy a new phone when he/she has the money to do so and wants to do so.
It´s not a matter of WHEN. It´s a matter of WHAT.
The question is not "When will that user buy a new phone?", but rather "When that user buys a new phone, whenever that is, what phone will it be?"
I have a love/hate relationship with Apple. I would never use a iPhone. I would love having any Mac, if someone gives it to me, but I would never spend my harn earned dollars on such an overpriced piece of hardware over general principals.
However, i do recognice that Steve Jobs was a business genius. Weather you like or love his ideas and methods, he turned a garage project into the biggest company in the world, with a market value higher than Exxon with 1/3 of it´s assets.
Apple is a money making machine, and that is where the "hate" part of my relationship comes from.
However, it surprised me a lot to see that they released iOS 6 for the iPhone 3GS, released in 2008!
That get´s you thinking, that inside all that "SELL NOW" culture Apple is, they also support their older devices that people bought years ago but can't buy a new phone now. However, when they can do it, it will surely be another iPhone. Because they FEEL that the company listens and cares for them.
Also if you jump from iOS 6 on the 3 GS to a brand new iPhone 5, the transition will be virtually non-existant, except for Siri and a couple of features.
However jumping from Android 1.5 or 2.1 to Jelly Bean, might not be so easy on some users, making them more likely to give iPhone a shot.
Since they have to adapt to another phone anyway, they might as well try the apple...
And for old users, it gives people a sense of continuity and care about the user. Otherwise we feel like being kicked out of a restaurant right after we payed the bill.

Trying to understand OIM - Please help

Hello All,
I am pretty new to OIM, just trying to understand how OIM works. For the past 4 years I was in Sun IdM and planning to switch over to OIM.
I read some documentation, I think OIM will perform basic provisioning and it contains out of box connectors to do basic provisoning. I have some questions can anybody please help
- Sun IdM uses Express language to develop custom workflows or forms, in OIM to develop workflows which language did you use, is it Java or any other language?
- If I want to provision users on AS/400, HP Open VMS or AIX systems, how can I do that I don't see any out of box connectors for these resources, so in order to integrate these resources do we need to write our own custom connectors?
- If the out of box connector does not support a specific function on a resource what are the options do we have? for example if the AD connector does not support to delete the exchange mailbox, how your going to perform this in OIM? Do we need to write a Java code for this?
- How much Java coding is necessary in OIM?
- Is OIM supports role based provisioning?
Please share any information.
Thanks in advance.

Sun IdM uses Express language to develop custom workflows or forms, in OIM to develop workflows which language did you use, is it Java or any other language?
- JAVA
If I want to provision users on AS/400, HP Open VMS or AIX systems, how can I do that I don't see any out of box connectors for these resources, so in order to integrate these resources do we need to write our own custom connectors?
- If OOTB connectors are not available then you'll have build you own connector as per Target Resource.
If the out of box connector does not support a specific function on a resource what are the options do we have?
- You'll have customize their connector as per your requirements or write your own
How much Java coding is necessary in OIM?
- We can't calculate how much java. It's totally depends on requirements how much code you'll ahve to write. But everything will be done using Java only.
- Is OIM supports role based provisioning?
Here Group represent Role. At a small scale it supports. But for large scale you'll have to use Oracle Role Manager as you do in Sun Role Manager.

Trying to understand the sound system

Here's my problem. My mic didn't work (neither the front mic nor the line-in in the rear), so after some research and trial and error I found that if I do
modprobe soundcore
my mic works on both the jacks
But here's where my confusion lies. This is the output of lsmod |grep snd before probing explicitly for soundcore
[inxs ~ ]$ lsmod |grep snd
snd_hda_codec_analog 78696 1
snd_hda_intel 22122 1
snd_hda_codec 77927 2 snd_hda_codec_analog,snd_hda_intel
snd_hwdep 6325 1 snd_hda_codec
snd_pcm_oss 38818 0
snd_pcm 73856 3 snd_hda_intel,snd_hda_codec,snd_pcm_oss
snd_timer 19416 1 snd_pcm
snd_page_alloc 7121 2 snd_hda_intel,snd_pcm
snd_mixer_oss 15275 2 snd_pcm_oss
snd 57786 8 snd_hda_codec_analog,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm_oss,snd_pcm,snd_timer,snd_mixer_oss
soundcore 6146 2 snd
[inxs ~ ]$
So as you can see, soundcore's already loaded, so why do I have to explicitly load it again to get the mic to work?
Once I add soundcore to my MODULES array and reboot, the lsmod output is also the same as above.
So my question is -- what does the explicit loading of soundcore do, that is not done by auto-loading of that module?

Oh... since your topic is Trying to understand the sound system, that puts you (and me) inside the whole world's population... chuckle. But I thought I'd pass along a document written by probably "The" main ALSA developer that I totally stumbled across just 3 days ago.
Go here:
http://kernel.org/pub/linux/kernel/people/tiwai/docs/
and download the flavor of your choice of the "HD-Audio" document, or simply view it online. It documents the deepest dive into the current ALSA snd_hda_* layers and issues that I've found to date (but still leaves me wanting).
Why that document isn't plastered across the interwebs is beyond me. I only get 11 hits when I search for it... such are the secrets of the ALSA world I guess.
Last edited by pigiron (2011-08-26 18:26:48)

Trying to understand the code???

Hi,
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</html>i hope someone could help me to understand this,
thank you for your help

You've probably already seen these, but here are a couple of links that may help.
http://help.adobe.com/en_US/FlashPlatform//reference/actionscript/3/operators.html#array_a ccess
http://www.adobe.com/livedocs/flash/9.0/ActionScriptLangRefV3/Array.html
What's basically happening is that the "for" loop goes through each item in the array. Don't be confused by the fact that two of the items in the array are Strings and one is an Integer - variable i being a String has nothing to do with the data type of the elements in the array.
The following code:
private function createLabels():void
     var myArray:Array = ['one', 'two', 3];
     for(var i:String in myArray)
          trace("i = " + i);
          trace(myArray[i]);
gives the following results:
i = 0
one
i = 1
two
i = 2
3
From that we can see that the "for" loop is assigning the index number of each array element, not the actual array element ('one', 'two', or 3) to the variable i. So calling myArray[i] is the same as calling myArray[0] the first time through the loop. This type of "for" loop is just a shorter way of doing the following, which produces exactly the same results:
private function createLabels():void
     var myArray:Array = ['one', 'two', 3];
     for(var i:int = 0; n < myArray.length; i++)
          trace("i = " + i);
          trace(myArray[i]);
Hope that helps.
Cheers!

Trying to understand and learn how to use btrfs

I have been the past days trying to get my head around how btrfs works
I have been trying tools like mkinitcpio-btrfs (very poorly documented) and now, if i list the subvolumes i have in certain volume (/) i see i have 4 subvolumes that have been created while playing around.
If i try to delete them with "sudo btrfs subvolume delete __active", for example, I get a "ERROR: Error accessing '__active'
What am I doing wrong?
Also, I cannot get the whole idea about the difference between snapshots and subvolumes, i mean, a snapshot should be a directory that saves the changes made on the fs, s, if you want to roll back those changes, you just have to make btrfs "forget" the changes stored in that directory and move along, but I cannot take the idea of the subvolume thing.....
As btrfs is quite experimental and the wikis are not noob-proof still, I'd appreciate if someone gave me a hand trying to understand these concept...
For the moment, I'm just using it on a test computer and on a personal laptop with no fear of data loss,.
Any help is welcome
Thanks!
Last edited by jasonwryan (2013-07-19 23:13:27)

I honestly think it is probably a better idea to not use mkinitpcio-btrfs. As mentioned above, it is poorly documented, and for me it has never worked right (if at all). It is an unofficial AUR package, and unfortunately our wiki still seems to give the false impression that using this package is the way to user btrfs with Arch.
The way I have my system set up is that in subvolid=0 (the root of the btrfs filesystem) I have a rootfs subvolume and a home subvolume (there are others, but these are what primarily make up my system). So in my fstab, I basically have two nearly identical lines, but one has no subvol specified and is mounted at /, and the other has 'subvol=home' mounted at /home.
So in order to make it so that I can change the root filesystem as I please, instead of having the / fstab entry specify the subvolume, I put it in the kernel command line. That is, I have 'rootflags=subvol=rootfs' in the kernel command line. So if I want to change it, I simply change the path to one of the snapshots.
Just remember that if you are one who likes a custom kernel, it is likely that you will have to have an initamfs no matter what you compile into your kernel. For one thing, the kernel has no mechanism for scanning for multiple device btrfs filesystems. But also, I have read that the kernel itself cannot handle the rootflags kernel command line argument.
Oracle Linux does something interesting with their default setup. They are not a rolling release, so this probably wouldn't work so well in Arch Linux, but they actually install the root filesystem (I think it is actually done to subvolid=0) and then after installation of the packages, a snapshot of the root filesystem is made, and the system is setup to boot off of that snapshot. So it is almost like having an overlayfs on openwrt. There is always a copy of the original system, and and changes that are being made are being done "on top" of the original. So in the event of an emergency, yo can always get back to the original working state.
If you put your root filesystem on something other than the root of the btrfs filesystem (which you should, as it makes the whole setup much more flexible), then you should also set up a mountpoint somewhere to give administrator access to the filesystem from subvolid=0. For example, I have an autofs mountpoint at /var/lib/btrfs-root. chose that spot because /var/lib is where devtools puts the clean chroot. So it seemed as reasonable a place as any.
You should go to the btrfs wiki, and peruse through the stuff there... not our wiki, but the actual btrfs one, as our wiki is pretty sparse. There is not all that much content there (not like the Arch wiki), but it does cover the features pretty well. I mean, there is certainly quite a lot for being information on only a single filesystem, but it shouldn't take you too long to get through it. There are a few links to articles about midway down the front page. What really gave me a better grasp of getting started with btrfs were the ones titled "How I Got Started with the Btrfs Filesystem for Oracle Linux" and "How I Use the Advanced Capabilities of Btrfs".

Trying to understand BtrFS snapshot feature

I'm trying to understand how the copy-on-write and Btrfs snapshot works.
Following simple test:
<pre>
# cd /
# touch testfile
# ls --full-time testfile
-rw-r--r-- 1 root root 0 2012-10-15 12:04:43.629620401 +0200 testfile
Test 1:
# btrfs subvol snapshot / /snap1
# touch testfile
# ls --full-time testfile /snap1/testfile
-rw-r--r-- 1 root root 0 2012-10-15 12:04:43.629620401 +0200 /snap1/testfile
-rw-r--r-- 1 root root 0 2012-10-15 12:07:38.348932127 +0200 testfile
Test 2::
# btrfs subvol snapshot / /snap2
# touch testfile
# ls --full-time testfile /snap1/testfile /snap2/testfile
-rw-r--r-- 1 root root 0 2012-10-15 12:04:43.629620401 +0200 /snap1/testfile
-rw-r--r-- 1 root root 0 2012-10-15 12:07:38.348932127 +0200 /snap2/testfile
-rw-r--r-- 1 root root 0 2012-10-15 12:09:21.769606369 +0200 testfile
</pre>
According to the above tests I'm concluding/questioning the following:
1) Btrfs determines which snapshot maintains a logical copy and physically copies the file to the appropriate snapshot before it is modified.
a) Does it copy the complete file or work on the block level?
b) What happens if the file is very large, e.g. 100 GB and there is not enough space on disk to copy the file to the snapshot directory?
c) Doesn't it have a huge negative impact on performance when a file needs to be copied before it can be altered?

Hi, thanks for the answers!
I guess calling it "logical copy" was a bad choice. Would calling the initial snapshot a "hard link of a file system" be more appropriate?
Ok, so BTRFS works on the block level. I've done some tests and can confirm what you said (see below)
I find it interesting that although the snapshot maintains the "hard link" to the original copy - I guess "before block image" (?) - there really is no negative performance impact.
How does this work? Perhaps it is not overwriting the existing file, but rather creating a new file? So the snapshot still has the "hard link" to the original file, hence nothing changed for the snapshot? Simply a new file was created, and that's showing in the current file system?
It actually reminds me of the old VMS ODS filesystem, which used file versioning by adding a simicolon, e.g. text.txt;1. When modifying the file the result would be text.txt;2 and so on. When listing or using the file without versions, it would simply show and use the last version. You could purge old version if necessary. The file system was actually structured by records (RMS), similar like a database.
<pre>
[root@vm004 /]# # df -h /
Filesystem Size Used Avail Use% Mounted on
/dev/sda3 16G 2.3G 12G 17% /
# time dd if=/dev/zero of=/testfile bs=8k count=1M
1048576+0 records in
1048576+0 records out
8589934592 bytes (8.6 GB) copied, 45.3253 s, 190 MB/s
Let's create a snapshot and overwrite the testfile
# btrfs subvolume snapshot / /snap1
# time dd if=/dev/zero of=/testfile bs=8k count=1M
dd: writing `/testfile': No space left on device
491105+0 records in
491104+0 records out
4023123968 bytes (4.0 GB) copied, 21.2399 s, 189 MB/s
real     0m21.613s
user     0m0.021s
sys     0m3.325s
<pre>
So obviously the there is not enough space to maintain the original file and the snapshot file.
Since I'm creating a complete new file, I guess that's to be expected.
Let's try with a smaller file, and also check performance:
<pre>
# btrfs subvol delete /snap1
Delete subvolume '//snap1'
# time dd if=/dev/zero of=/testfile bs=8k count=500k
512000+0 records in
512000+0 records out
4194304000 bytes (4.2 GB) copied, 21.7176 s, 193 MB/s
real     0m21.726s
user     0m0.024s
sys     0m2.977s
# time echo "This is a test to test the test" >> /testfile
real     0m0.000s
user     0m0.000s
sys     0m0.000s
# btrfs subvol snapshot / /snap1
Create a snapshot of '/' in '//snap1'
# df -k /
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda3 16611328 6505736 8221432 45% /
# time echo "This is a test to test the test" >> /testfile
real     0m0.000s
user     0m0.000s
sys     0m0.000s
# df -k /
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda3 16611328 6505780 8221428 45% /
# btrfs subvol delete /snap1
Delete subvolume '//snap1'
# df -k /
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda3 16611328 6505740 8221428 45% /
The snapshot occupied 40k
# btrfs subvol snapshot / /snap1
Create a snapshot of '/' in '//snap1'
# time dd if=/dev/zero of=/testfile bs=8k count=500k
512000+0 records in
512000+0 records out
4194304000 bytes (4.2 GB) copied, 21.3818 s, 196 MB/s
real     0m21.754s
user     0m0.019s
sys     0m3.322s
# df -k /
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda3 16611328 10612756 4125428 73% /
There was no performance impact, although the space occupied doubled.
</pre>

Trying to understand Distribution Model

When I view the metadata of a Distribution Model, I see DM overview which contains 2 tabs. One for Data Objects and Second for Rules. I am trying to understand the tables in each of these tabs.
Association Table - RR00200100G_AT
DRDS Table - DM00200100G1
DR Table (Runtime) - RR00200100G1
What are they used for and when to the entries get updated?
Thanks
JB

Thanks for the quick reply Siva....
I am trying to investigate a behaviour where we have a normal rule based on a Date Pattern. The business requirement is to distribute only today's data back to the user's device. The issue we are seeing is that there are data in the device that were created in the past.
The rule's criteria is based on CREATED_BY(UserID) and CREATED_ON(date) node attribute from the data object.
In the rule, the CREATED_BY is mapped to the USER device attribute and the CREATED_ON is a date pattern, where the Operator is 'EQ', Custom Type is 'C' - Constant Offset, and Date Pattern is 'Current Date'.
With this set-up, there are four events that were created in the Execution Plan - Device Addition, Device Modification, Device Removal and Sliding Window-Date. There's also a job, Sliding Window-Date,
that is scheduled to run once a day at midnight.
My observation is that every day, after the Sliding Window-Date runs. The DRDS & DR tables, in the second are updated. But the entries in the Association table, from the first tab, are not updated.
I am expecting that the Status Flag, in the Association table, of all records that are not relevant for that date, get's updated to 'D' so that when the user syncrhronize they will get deleted from the device.
What am I missing? What triggers the update to the Association table?

Trying to understand message redelivery

Hi,
I'm trying to understand redelivery.
I'm using JMS to sync user data from our J2EE system with our Lotus Domino system. I want to be sure that in the advent of any failure in this the sync-ing process, a notification is sent to ensure that at least the Notes Domino stuff can be sync-ed manually by an administrator.
So my question is how to be sure to capture and send notification of EVERY failure with the information needed to manually sync if needed?
As I understand it, it's my responsiblity to ensure that I handle all Exceptions in the onMessage() method of our MessageListener implementation - without throwing any new Exceptions. I do this so I'm confident that things like a Notes Session not being instantiated, or a Notes document not being found are handled and notifcation sent. The result is that if an Exception occurs at this level, I handle it and as far as JMS is concerned the message was consumed and got acknowledged. Right?
But what about messages that fail before the MessageListener is reached - presumeably a problem with the JMS provider (we're using WebLogic 6.1). Can I just rely on JMS to redeliver failed messages and not worry about them? Is there a recommended way to test such failure so I can be sure what happens? I tried throwing a RuntimeException in the onMessage() method, but I did not observe any attempts to resend the message and when I browsed the queue it was empty.
So as you can you see, I'm unclear about this! Appreciate and clarifying points!
Terrence

You can rely on the JMS provider to take care of it's own failures. However, please note that the JMS provider can fail right after you have successfully done your work in onMessage - but before the message acknowledgement happens. This means that in case of failure, you may get the last consumed message again.
Also note that different JMS providers will handle RuntimeException's raised from onMessage differently, so check your vendor's documentation. After a couple of re-tries, your JMS provider might for instance deem that the receiver/subscriber has a problem consuming said message and move the message into an error queue.
- Bjarne.

Trying to Understand Color Management

The title should have read, "Trying to Understand Color Management: ProPhoto RGB vs, Adobe RGB (1998) my monitor, a printer and everything in between." Actually I could not come up with a title short enough to describe my question and even this one is not too good. Here goes: The more I read about Color Management the more I understand but also the more I get confused so I thouht the best way for me to understnand is perhaps for me to ask the question my way for my situation.
I do not own an expensve monitor, I'd say middle of the road. It is not calibrated by hardware or any sophisticated method. I use a simple software and that's it. As to my printer it isn't even a proper Photo filter. My editing of photos is mainly for myself--people either view my photos on the net or on my monitor. At times I print photos on my printer and at times I print them at a Print Shop. My philosophy is this. I am aware that what I see on my monitor may not look the same on someone else's monitor, and though I would definitely like if it it were possible, it doesn't bother me that much. What I do care about is for my photos to come close enough to what I want them to be on print. In other words when the time comes for me to get the best colors possible from a print. Note here that I am not even that concerned with color accuracy (My monitor colors equalling print colors since I know I would need a much better monitor and a calibrated one to do so--accurately compare) but more rather concerned with color detail. What concerns me, is come that day when I do need to make a good print (or afford a good monitor/printer) then I have as much to work with as possible. This leads me to think that therefore working with ProPhoto RGB is the best method to work with and then scale down according to needs (scale down for web viewing for example). So I thought was the solution, but elsewhere I read that using ProPhoto RGB with a non-pro monitor like mine may actually works against me, hence me getting confused, not understanding why this would be so and me coming here. My goal, my objective is this: Should I one day want to print large images to present to a gallery or create a book of my own then I want my photos at that point in time to be the best they can be--the present doesn't worry me much .Do I make any sense?
BTW if it matters any I have CS6.

To all of you thanks. First off yes, I now have begun shooting in RAW. As to my future being secure because of me doing so let me just say that once I work on a photo I don't like the idea of going back to the original since hours may have been spent working on it and once having done so the original raw is deleted--a tiff or psd remains. As to, "You 're using way too much club for your hole right now." I loved reading this sentence :-) You wanna elaborate? As to the rest, monitor/printer. Here's the story: I move aroud alot, and I mean a lot in other words I may be here for 6 months and then move and 6 months later move again. What this means is that a printer does not follow me, at times even my monitor will not follow me so no printer calbration is ever taken into consideration but yes I have used software monitor calibration. Having said this I must admit that time and again I have not seen any really noticeale difference (yes i have but only ever so slight) after calibrating a monitor (As mentioned my monitors, because of my moving are usually middle of the road and limited one thing I know is that 32bits per pixel is a good thing). As to, "At this point ....you.....really don't understand what you are doing." You are correct--absolutely-- that is why I mentioned me doing a lot of reading etc. etc. Thanks for you link btw.
Among the things I am reading are, "Color Confidence Digital Photogs Guide to Color Management", "Color Management for Photographers -Hands on Techniques for Photoshop Users", "Mastering Digital Printing - Digital Process and Print Series" and "Real World Color Management - Industrial Strength Production Techniques" And just to show you how deep my ignorance still is, What did you mean by 'non-profiled display' or better still how does one profile a display?

Trying to understand daemon message

Hi ,
trying to understand message see in the logging log -
DAEMON-3-SYSTEM_MSG: netsnmp_check_tcp_session_for_user : Cache found for user (username).
Thanks

You can rely on the JMS provider to take care of it's own failures. However, please note that the JMS provider can fail right after you have successfully done your work in onMessage - but before the message acknowledgement happens. This means that in case of failure, you may get the last consumed message again.
Also note that different JMS providers will handle RuntimeException's raised from onMessage differently, so check your vendor's documentation. After a couple of re-tries, your JMS provider might for instance deem that the receiver/subscriber has a problem consuming said message and move the message into an error queue.
- Bjarne.

Trying to understand flash.media.Microphone

Hi,
I am new to flash/AS3 and currently trying to understand how to use flash.media.Microphone in my application.
I have the following code to activate the microphone:
var mic:Microphone = Microphone.getMicrophone();
Security.showSettings("2");
mic.setLoopBack(true);
mic.setUseEchoSuppression(true);
mic.addEventListener(StatusEvent.STATUS,micStatus);
mic.addEventListener(ActivityEvent.ACTIVITY, activityHandler);
This seems to be working fine and I get the "allow the use of the microphone" dialogue when I run the flash application.
However, I go and add some other code in and after while I no longer get "allow the use of the microphone" when running my application. The microphone is still loaded can micStatus gets called, but the microphone just stays muted, so I don't get the echo back as configured with mic.setLoopBack(true).
Initially I thought that maybe this is because something in my code, so I went back to my initial code again, but still get no "allow the use of the microphone" dialogue and the microphone stays muted.
If I create a new AS3 project and copy the code there is works again. This makes me think that maybe I am missing something. Do I need to release the microphone somehow after use. Saying that if I restart my computer, the projects that stopped displaying "allow the use of the microphone" will still not display them.
Really confused about this. Anyone have any pointers what I am doing wrong?
regards,
Olli

Hi,
Are you trying to download Adobe Flash Media Live Encoder 3.2? Could you please try again from here : https://www.adobe.com/cfusion/entitlement/index.cfm?e=fmle3 ?
Hope this helps.
Thanks,
Apurva

Trying to understand user load

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