How does OSX 10.10.2 handle 802.11h Power Constraint Information Element.

Is this a know issue? This is affecting overall throughput and performance.
The Access Point we are using supports 802.11h, in particular the Power Constraint Information Element.
As the Transmit Power on the AP is lowered, the value in the Beacon changes and becomes larger. At a some point the MACBook Pro (3x3) running OSX 10.10.2 seems to reduce its transmit power to low.
Ex.
If the TX-Power on the AP is set to 8 dbm the Beacon value for the IE is 20, on the AP we see the MACBook RSSI at -49. We then change the TX-Power on the AP to 7 dbm and the Beacon value for the IE is 22, on the AP we now see the MACBook RSSI as -83 and traffic stops flowing. We believe the MACBook chip has reached a limit and the math calculation is going negative or producing some gross value for the MACBook to process.
From the 802.11-2012 standard:
"8.4.2.16 Power Constraint element
The Power Constraint element contains the information necessary to allow a STA to determine the local maximum transmit power in the current channel. The format of the Power Constraint element is shown in Figure 8-97.
The Length field is set to 1.
The field is coded as an unsigned integer in units of decibels. The local maximum transmit power for a channel is thus defined as the maximum transmit power level specified for the channel in the Country element minus the local power constraint specified for the channel (from the MIB) in the Power Constraint element.
The Power Constraint element is included in Beacon frames, as described in 8.3.3.2, and Probe Response frames, as described in 8.3.3.10. The use of Power Constraint elements is described in 10.8.4."
If 802.11h support is turned off, throughput is fine, If the OSX 10.9.5 is used the throughput is fine. Only since loading the OSX 10.10 and above have we been seeing this issue. The issue does not appear to happen on Apple Airport Extreme, because the Power Constraint IE is always 0 and the TX-Power is not adjustable.
Thanks,

Apple doesn’t routinely monitor the discussions. These are mostly user to user discussions.
Send Apple feedback. They won't answer, but at least will know there is a problem. If enough people send feedback, it may get the problem solved sooner.
Feedback
Or you can use your Apple ID to register with this site and go the Apple BugReporter. Supposedly you will get an answer if you submit feedback.
Feedback via Apple Developer

Similar Messages

How does adv tax payments are handled in sap

how does adv tax payments are handled in sap
is there any method involved to handled it through app

Andres,
Thanks for your feedback - my question was probably a little vague (at best).
The ASCII characters are hidden in the barcode - they do not form part of the numeric string when scanning into a normal char field.
If I open notepad and scan I do not see the special character. If I open word and scan, I still do not see the special character but the font size changes where I know the special character exists - obviously it is a command to word.
If I open CMD DOS prompt and scan there, I CAN see the special character.
This led me to this how can I format an SAP field to behave the same way?
I've subsequently found configuration settings in the scanning device itself which allows me to swap these hidden character (called Function Codes) with actual characters of my choice. For now this is how I will have to do it. The only issue with this approach is that I have to make sure all scanners are set up properly in each country which is a bit of a pain.
Regards,
Mark.

If the browser's cookie is disabled, how does Tomcat 4.1.12 handle the sess

If the browser's cookie is disabled, how does Tomcat 4.1.12 handle the session?

by URL Rewriting.
For in deep information have a look at the servlet api docu or get the free pdf tutorial CoreServlets that covers this topic under pdf.coreservlets.com

How does the SDK and Reader handle printing with orientation?

I have a document that I want to print, and it contains a portrait page on Page 1, and a landscape page on Page 2. Acrobat Reader correctly prints these pages (with a single print job), and I'm assuming it's because of the auto-rotate option on the print dialog. Is this a feature of Reader, the API, or how the printer handles the request. I've tried printing this PDF just using the JAva API, but the orientation remain portrait for all pages. How does the Adobe Acrobat API deal with mixed orientation pages? Ignore the fact that I did my test printing with Java, because my question is whether or not the auto orientation is a feature of the UI, the SDK, or the printer (or a combination).

Same as the current Ipod Video or "Classic" there is an option under settings to toggle between original aspect ratio or Full Screen.
Kenal0

How does Oracle JDBC thin driver handle numbers via getString?

Hi,
I have a query regarding how numbers are handled by the oracle jdbc thin driver. The issue I am facing is with regards to the decimal separator (. is en_US and , in pt_BR)
e.g. Consider the below code,
Connection conn = DriverManager.getConnection(...);
Statement stmt = conn.createStatement();
ResultSet rset = stmt.executeQuery("select value from test_table1");
while (rset.next())
System.out.println (rset.getString(1));
test_table1 has a single column of sql type 'number' with a single row having value "123.45"
NLS_NUMERIC_CHARACTERS = ".,"
Database version = 10.2.0.2.0
There is a (generic) method to which a ResultSet is passed and it returns a dictionary of key value pairs. All column values from the ResultSet are retrieved using getString method of ResultSet.
My question is whether the jdbc driver formats numbers (based on the locale) before returning it as a string as part of the getString method?
e.g.
java -Duser.language=pt -Duser.region=BR TestJDBC
prints "123.45" and not "124,45"
Is there a reason why getString always retrieves a number column value with '.' as the decimal separator?
To help make things a bit more clear, all the column values retrieved are then converted into an XML (and hence the conversion to string)
At present, the only way I see out of this is to handle numbers differently.
i.e. something similar to,
if (resultsetmetadata.getcolumntype .. = double OR float OR int OR long.. )
NumberFormat.getInstance().format(rset.getDouble(1));
Is there a better way to resolve this issue?
Thanks,
Binoy

user565580,
As has been already stated, Oracle does not have data-types INTEGER or SMALLINT, only NUMBER.
So even though Oracle lets you write INTEGER, it really creates a NUMBER.
(As Joe mentioned.)
Other databases don't have a NUMBER data-type, they have INTEGER, SMALLINT, etc.
Originally, Oracle database only had three data-types:
CHAR
DATE
NUMBER
If you're going to be working with Oracle database, then you need to adapt yourself to its limitations.
So you'll probably need to define NUMBER data-types using scale and precision.
(As Kuassi mentioned.)
Good Luck,
Avi.

How does OSX Server work

Hi, I have 4 iMacs and 2 Macbook Pro's that have recently been brought from separate locations to one place, though all are currently working independently.
I am looking into setting up OSX server so that everything can be shared etc. I was just wondering if one of my Mac's will act as the central server and contain all the data or it will be a case of all data remaining on each Mac and just shared across the network when needed. Its just that I don't think any of the Mac's has enough storage space to store everything across all units. Thanks in advance. Craig

Would all of our data across all computers then be stored within that 2TB? If so are there options for expansion of that storage.
Well, this depends on how you set up the environment. First a thought about your data, then a thought about the storage.
You could store home folders on the server and everyone logs in directly to the server. But, if you are using Photoshop (or even iPhoto), you will not have a pleasant experience. User homes can remain on the individual systems and the users simply copy shared data up to the server. Now, if you are looking to create an asset library, you might want to look at products like Cumulus or Portfolio. Depending on your workflow, some form of digital asset management software may streamline your environment.
As far as storage, Apple provides a mini configuration that offers two 1 TB drives. These drives do not come in a raid so the OS is on one drive and the other drive is just sitting there. You can use the server in this capacity but you then have no redundancy on the OS drive or the data drive. If you RAID the two drives into a mirror, then your usable capacity becomes 1TB but you gain redundancy (redundancy ≠ backup). I will admit, I remain a fan of the direct attached storage model where you have a host system and you have storage. By separating the storage from the host, you have the ability to move the storage should the host have trouble. Perfect case in point. A Mac mini Server is covered under Apple Care. This is a consumer level warranty agreement. So, if there was a problem with your mini and all your data is in the mini, then you are likely down for three days (1 day to diagnose, 1 day to get part of send unit in for repair, and the third to get it operational again). I simply can not come to terms with sending a server with my enterprise data into Apple for repair. This does not sit well. But if the data is on an attached array, then the host can completely melt down. I simply need to connect the array to another device and I have my data.
Then, would server back-ups be done by an external hard disk with storage that exceeds 2TB and time machine? Or is there a more advisable solution?
Realistically, a backup volume should be a minimum of 2x the capacity of your source volume. This allows for historical increments. Perhaps one of the best primers I have seen on backup is a study funded by the Library of Congress. Check out this site http://dpbestflow.org/backup/backup-overview and take a look at the 3-2-1 backup rule. This is a simple rule that nearly every company can follow. But, it comes down to budget. Too often I see companies that plan for the server and the storage and then never consider the cost of backup. This is a crime as data is or currency. Machines can be replaced often in minutes. Walk into store and buy a new machine. But your data... hundreds or thousands of hours or work can not be reconstructed as easily (or if ever). Likewise, the American Red Cross conducted a multiyear study that concluded that "as many as 40% of small businesses do not reopen after a major disaster." (http://www.redcross.org/images/MEDIA_CustomProductCatalog/m4240206_PrepYourBusfo rtheUnthinkable.pdf) I can not stress the importance of backup enough. And backup alone is not enough. You must test restoration on a regular schedule. What good is a backup if it doesn't work when you need it?
So, how do you backup? This will depend on many factors. They include number of locations you have access to, budget, capacity of data, etc. Keep in mind that many cloud solutions (Crash Plan Pro, Carbonite, etc) provide a means of satisfying the off-site requirement. However, if you are starting with a large data set, it can take many weeks (without a seed backup) to get your data replicated. Many will simply use Time Machine as the starting point. This is a good place to start. But you must monitor it. Trust. But verify.
Ok, sorry for the rambling. Actually enjoying a lunch break for a change
Reid
Apple Consultants Network
Apple Professional Services
Author "Mavericks Server – Foundation Services" :: Exclusively available in Apple's iBooks Store

How does Firefox 10.0.6 handle spell checking

Our users run Firefox 10.0.6 on Windows XP and some are having intermittent issues with the spell checker underlining correctly spelt words as incorrect spellings.
Closing and reopening the browser session seems to resolve but the issue returns later in the day or the following day.
I would like to know what Firefox references to perform the spell check and how this is achieved.
'Check my spelling as I type' is enabled and the default language is English/United Kingdom {
[en-gb]

You can see which dictionary is selected if you right-click in a text area and open the Languages submenu.
At least one dictionary should be installed and have a check mark to indicate that it is selected.
*Open the "Add Dictionaries" link to install a dictionary if you do not have one.
*Make sure that [X] "Check Spelling" in the right-click context menu is check-marked.
You can enable or disable spell checking globally:
*Tools > Options > Advanced : General: Browsing: "Check my spelling as I type"
You can look here for dictionaries:
*https://addons.mozilla.org/firefox/language-tools/
See also:
*http://kb.mozillazine.org/Dictionaries
*http://kb.mozillazine.org/Spell_checking
* http://kb.mozillazine.org/Deleting_spellcheck_entries

How does OSX "mark" applications as OK?

When downloading an app over the Internet, OSX will ask if it is OK to launch the first time; then, doesn't ask again.
I just bought a MacBook Pro for my wife and set it up with two accounts with me as Admin and her with admin privileges.
I downloaded Thunderbird using my account but didn't launch it since I didn't want to pull my email onto that computer. I loaded the profile from my wife's iBook to her account library.
When my wife launched TB all was good except, the pop up about the TB app being downloaded from the Internet popped up every time she launched TB. I concluded that since only I had write privileges for TB that OSX couldn't mark it as OK. I changed the privileges so any one with admin status could write. Launched it in her account with the pop-up the first time; then, relaunched it and no pop-up. Set the privileges back and no pop-up.
I have concluded that OSX must write some type of marker to the app so it doesn't keep asking.
Anyone know what it writes and where it is stored?
Message was edited by: RobertVJ

Malcolm,
That second link was quite interesting. I understand about the meta-data thing but I need to do another more thought out experiment when I have some time.
NOTE: I didn't look at the contents directory using the Finder; I looked at it using BBEdit which can examine invisible files and got the creation time-stamp of the file using FileXaminer.
I Still go back to the app on the mounted dmg. I launched it and got the pop-up. Quit it with the dmg still mounted. Relaunched it and got the pop-up; so, even though I never dismounted the dmg the pop-ups keep coming. Now, if OSX tries to store the meta-data on the relevant disk (in this case a mounted dmg), which would make sense, your meta-data explanation sounds correct.
Thanks. I have found that many heavy users of this forum seem to be striving for volume rather than quality. Specifically, they don't thoughtfully read a question and just pop out the first thing that comes to their mind. Malcolm, I don't put you in this group.
I'm a Mod on Mozillazine and have seen a few there too.
Cheers!

How does OS X Mountain Lion handle zip files

For zipped files do I need a third party app or does the OS take care of zipping and unzipping the files?

Astonishingly, you cannot do an in place view of the zip file without actually unzipping it. There are some commercial tools that do this, but as a former Windows user, this is just ridiculous and very inconvenient to me.

How does the original iPad mini perform on iOS 8?

I have been thinking about getting a new iPad from the iPad 2. I know the original iPad mini and the iPad 2 have similar specs, but the real upgrade I get from it is the wireless technology and the ability to use Handoff. Overall, how does the original iPad mini handle iOS 8? Should I go with that iPad or get the iPad mini 2? I wouldn't get the iPad mini 3 because I don't think Touch ID is necessary for what I want to do on an iPad.
Overall, I am wondering how iOS 8 performs on the original iPad mini so it can help me choose between the original or the iPad mini 2. Thanks in advance for your input!

Get the mini 2 when the prices come down. The mini 2 is baically a smaller iPad Air. The improvements over the mini are well worth the money.
http://www.apple.com/ipad/compare/#comparison-chart

How does OOB breadcrumbs work for multisite environment

Hi
I am currently using CatalogNavHistory and CatalogNavHistoryCollector to display breadcrumbs in my catalog pages.
My doubt is with ATG10.1 we are using multisite environment for our project. So one category will be part of more than one site.
So how does OOB CatalogNavHistory and CatalogNavHistoryCollector handle the breadcrumbs for these scenario?
Thanks
Ajay

Dear KK,
IF You want to use the EURO currency as transaction currency and Your Local currency is Australian Dollar, the System correectly will take the Exchange rate EURX.
EURO is used for the old european currencies
EURX for all the other foreign currencies
EMU indicator that means European Monetary Union has to be flagged if the referency currency is EUR.
I hope this can help You.
Mauri

How does FCPX handle audio?

Still working on getting audio exported to an AAF, and having problem doing this. So I need help understanding how FCPX is handling my audio.
When it's on the timeline, is it being conformed to the frame rate of the video?
When audio is exported, does FCPX force it to conform to the video frame rate in the project settings, audio properties, or both? Or does it allow the audio to export at whatever rate the original media is at?
I export an XML from FCPX, then open that with X2Pro and it makes an AAF file, but a report tells me that "Conform rates are not supported. The Conform rate at 01:04:49.23 has been ignored." So when I go to that timecode, all I see is video at 24p and a detached audio piece at 23.98. Why are these different? How would I fix?

FINALLY! Thank you God, this issue is resolved. Here's what I learned and had to do in case anyone else may be wrestling with this issue.
Apparently, FCPX handles audio like this:
• Adjusts varying frame rates to match the project property, e.g. if you drop footage that is 24, 30, and 60 all on a 24p timeline, FCPX makes them fit into 24p, it does not tell you or show you this, it just does it automatically
• It may handle detached audio a little differently. For instance, I had a 24p timeline, and there were 39 detached audio clips that were 23.98 because they were not attached to any video, so I had to reimport and sync, see the workaround below.
The X2Pro, program to convert FCPXML to AAF, spits out a report showing where all the conform errors were, 39 total, but still required calculating where exactly it was because it didn't identify precisely by frames. Once the offending detached audio clip was located, I then Expanded the Audio Components to see both the original and synchronized audio. Next I had to go find the external audio that had been synced, then do a replace edit on the old synchronized clip. This made the audio's video frame rate 24 and took away the conform errors! Then I had to sync up the new detached audio clip manually with the video clips above it.
Also, to get out to an AAF with X2Pro, it does not support retiming, so I had to strip out 22 instances of retiming.
Whew, glad that's all over! Hopefully this AAF will be pristine for my audio post supervisor to bring into ProTools!
Thank you all for your help and input along the way!

How does Media Manager handle Motion Projects within the Sequence being cop

How does Media Manager handle Motion Projects within the Sequence being copied?
I've highlighted my sequence, opened Media Manager, and copied it to another drive. When I open up the sequence in it's new project, the rendered Motion Project plays within my sequence but it won't let me go back into this Motion Project to make changes. I tried starting over. This time I highlighted the actual motion sequence and clip that is created within FCP after sending something to Motion and copied those to the new drive. When I went into the newly created 'media' folder and double clicked on the motion project it launched. It looked liked it was going to play but while my crops moves and borders were there, the filmed material is shown as a freeze frame for the duration of the motion project.
I did this with and without 'including master clips within selection'. Any advice would be appreciated. Thanks.

Is there anyone who knows the answer to this? Thanks.

How does IDP handle multi-value attributes in directory?

I have a directory referenced by the IDP where the mail attribute is multi-value. Assertions being received by the SP are indicating that the mail attribute is null or empty. How does the Oracle IDP handle multi-value attributes from a directory? Is there a way to select the first entry in an array of multi-values?

On the IdP side, passing of multi-valued attributes is supported. Read this section:
http://download.oracle.com/docs/cd/E10773_01/doc/oim.1014/b25355/configuring.htm#BCGCGFCJ
Snippet (under 'Delimited Data'):
"In addition to supporting and passing multi-valued attributes, Oracle Identity Federation can also support delimited data to provide multiple values for assertion attributes ......"
This information is also available on the OIF screen for 'Add Assertion Profile'.
On the SP side, mapping a multi-valued assertion attribute to a local user attribute is NOT supported. Read this section:
http://download.oracle.com/docs/cd/E10773_01/doc/oim.1014/b25355/configuring.htm#BCGGEAEA
Snippet (under Submit/Reset button):
"Note: Mapping an assertion attribute containing multiple values to a local user is not supported."
So, basically, there is no way to send only the first value of an LDAP attribute.
-shetty2k

How does the iMac handle HD video editing?

Tired of Window PCs, looking to buy an Apple System. I would like to do some video editing but want to make sure I get a powerful enough system from the start. How does the iMac handle HD video editing or should I look a better, faster computer?

I have a mid 2011 iMac, 21 inch 4 GB RAM (the next to bottom iMac), Lion. I run Final Cut Express 4 with no difficulty (at least so far). It is certainly fast enough. My old G5, 7 years old, was also, and the iMac is faster.
As I remember, I heard from someone on the Final Cut Express Discussions that some people might be having difficulty with FCE 4 on Lion, but I am a bit hazy. Its bigger brother, Final Cut Pro, is also available. I suggest that you post on the Final Cut Express or Final Cut Pro Discussion sites. They have many reliable users.

How does OSX 10.10.2 handle 802.11h Power Constraint Information Element.

Similar Messages

Maybe you are looking for