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  • Multi-core processors: Better performance running multiple applications?

    - by aip.cd.aish
    I realize for single applications - the application itself has to be designed to take advantage of multiple cores. But what about executing many different applications simultaneously? On my development machine at an average instance, I run multiple servers (a database server, a web server), multiple instance of IDEs (either Visual Studio or NetBeans), Web-browser with multiple tabs (in Chrome, each tab is a process on its own), FTP client, SSH client etc. Does having a multi-core system improve the ability to run multiple applications simultaneously?

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  • Why can't I reconnect to my Philips SHB9000 bluetooth headset?

    - by Thomas Eyde
    When I connected my Philips SHB9000 bluetooth to my Windows 7 (64 bit) for the very first time, it worked well. I had to manually change the default playback device, but otherwise it worked. Then, when I start up my computer from standby, it's nearly random when I can reconnect or not. My last option is to remove the bluetooth device and reconnect it. But now, even that doesn't work. The sad thing is, this used to work better on Windows 7 beta. Windows Update has a new driver which fails to install. Searching for this driver yields nothing. I thought all vendors had an official site for their drivers? Well, Philips seems to have none. If there is no answer to this problem, my advice is to NOT buy this headset. It's good looking, the sound is nice, but what need do we have from that if we can't use the bloody device?

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  • How to connect Microsoft Bluetooth Mouse 5000 to Windows 7?

    - by davidshen84
    I have a Microsoft Bluetooth 5000 mouse, and I used it with my Linux and Windows 7 system. In Linux, the mouse can always connect to the system normally. But on Windows 7, after I have successfully added the mouse to Windows 7, if I have connected the mouse to the Linux system, it will not be able to connect to the Windows 7 system any more - unless I remove the mouse and add it again. I tried to play all settings I could find in the Bluetooth settings on Windows 7, but cannot fix this problem. How can I use the mouse without having to remove and add it again ?

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  • Share wired internet connection of windows 7 pc to iPad via bluetooth?

    - by Joshua Rountree
    At my work, we have wireless... but our desktops are wired. The wireless in the building is sparse and horrible and my iPad has an unstable wifi connection to it. However, I was wondering since my iPhone is capable of sharing internet to my iPad via bluetooth protocol, if my PC could somehow reproduce that same protocol and allow the iPad to do the same? I'd love it if my iPad had a stable connection via bluetooth when it's just sitting near my desktop. Please advise! Thanks!

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  • How to configure Linux to act as a Bluetooth RFCOMM SPP server?

    - by regulatre
    I'm writing a phone app for Android that connects to a bluetooth RFCOMM device in my car. My phone app talks AT commands with it. For development work, I often need to communicate with the device to try different commands and things. My neighbors are starting to think I'm weird because I sit in my car for hours on end with my laptop screen shining on my face, typing away like a script kiddie. I'd much rather configure one of my many Linux servers to act as a bluetooth RFCOMM device and allow me to connect to it (indoors, while I sit on my couch). I imagine I have to start with something like sdptool add SP But then what? I'm perfectly happy writing a perl app to handle the I/O, but I just don't know how to make the bluez stack accept connections and subsequently pipe that stream to a perl app.

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  • Can you install Windows Messaging on Windows Server Core 2008 R2

    - by user179632
    We have Windows Server Core 2008 R2. We have successfully installed .NET and the Visual C++ runtimes. Our application requires the ability to post messages to an MSMQ server To be clear we do not want to install MSMQ server on the machine. However we want to be able to post messages to a remote MSMQ server so we need to install the client parts of Windows Messaging. Has anybody succeeded in doing this?

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  • My Intel Core i3 frequently shuts down due to "Processor Thermal Trip error"

    - by explorest
    My Desktop PC running Windows 7 on Intel Core i3 dual processor machine started shutting down during the boot process a couple of days ago. I left it alone for about 48 hours and tried again. The boot process informed me about Processor Thermal Trip as being the cause of boot failures and suggested a Windows recovery process. I went through the recovery process which completed without problems. The PC booted normally and Windows 7 worked as expected but after 10 minutes it again tripped and now whenever I start it, it shuts down during the boot process. What should I do next?... is there a boot menu / setup settings that needs to be adjusted to avoid it... Or is there a hardware problem (which seems unlikely as the machine occasionally boots perfectly )?

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  • Why does CentOS Linux use cpu/core #1 so much more in a 4-core system?

    - by ck_
    I've been watching top and htop for awhile on a very active server and I am wondering why linux does not automatically use cpu affinity better? CPU #1 (actually core #1 of 4) is used much more heavily than the others. Is there a setting similar to what vm.swappiness does for vm swap that forces a preferred affinity pattern? Should I be using forced affinity settings within mysql/apache/nginx/exim to get better results? This is on CentOS 2.6.32-279 x86_64 SMP Thanks for any suggestions.

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  • How to fix Bluetooth Sound in Ubuntu 11.10

    - by Cerin
    Bluetooth sound worked perfectly for me in Ubuntu 10.04. I recently upgraded to 11.10, and although sound in general works fine, Bluetooth sound almost never works. My headset is paired, and Sound Settings shows it's selected as the output device, but no sound is being output. I've tested the headset with other devices, and confirmed it still works, so the issue is definitely with 11.10. I'm not seeing any explicit errors and I can't find any similar issues with 11.10 through Google. I tried restarting the bluetooth service, but that had no effect. What can I do to fix this?

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  • Mimicking a bluetooth disconnection

    - by user2529672
    I've written a program to control a bluetooth device. I'm trying to test cases when the bluetooth disconnects, i.e. if its out of range. Physically taking the device out of range is one possibility, but its quite cumbersome and I have to go outside my office to achieve this. What can I do to trigger a disconnection? Is there, for example, an interferer I can setup, say with an Android phone, that would make the connection drop? Or limit the Bluetooth transmit power? Any other possibilities?

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  • Android: Any way to auto-pair to another device over Bluetooth without prompting for a pin?

    - by D.
    I am looking for a way to connect to Android devices via Bluetooth without user intervention(assuming at least on device is set to "Discoverable"). Since 2.0, it seems the devices prompt for a random pin to be entered when connecting to each other for the first time. I've tried some Bluetooth projects, but none seem to work as the underlying Bluetooth Adapter code always kicks in. Is there any way around this? Thanks.

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  • How to send a text message to mobile phone via bluetooth in Java?

    - by Sebastian Dwornik
    Similar to this question. I have been tasked to develop an application using Java to send message strings from my WinXP PC to a nearby mobile phone, using only Bluetooth. I have found a free Java Bluetooth library (Bluecove) to work with, but it seems that it might not support OBEX under Windows, which as I read is necessary to perform this task. Has anyone proven this using Java? What stack and Bluetooth library did you use? Thanks. :)

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  • bluez 5.19 PS4 controller

    - by Athanase
    I currently have a problem when pairing my computer with a PS4 remote. On my Ubuntu 14.04 I removed everything related with bluez and bluetooth, and I built and installed bluez 5.19. Here are some useful command outputs: jean@system ~ hcitool hcitool - HCI Tool ver 5.19 jean@system ~ hcitool dev Devices: hci0 00:15:83:4C:0C:BB jean@system ~ bluetoothctl [bluetooth]# version Version 5.19 jean@system ~ bluetoothctl [NEW] Controller 00:15:83:4C:0C:BB BlueZ [default] jean@system ~ lsusb Bus 003 Device 012: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode) So here is what happens. When I try to hard pair the controller with the computer, by holding the share and ps button for a while, everything works as expected and the pairing is done properly. After a hard pairing if I try the pairing by pressing the ps button only, nothings happen. In order to go it, I first power up the bluetooth dongle: jean@system ~ sudo hciconfig hciX up and then I run the bluetooh deamon bluetoothd: jean@system /usr/libexec/bluetooth ~ ./bluetoothd -d -n bluetoothd[11270]: Bluetooth daemon 5.19 bluetoothd[11270]: src/main.c:parse_config() parsing main.conf bluetoothd[11270]: src/main.c:parse_config() discovto=0 bluetoothd[11270]: src/main.c:parse_config() pairto=0 bluetoothd[11270]: src/main.c:parse_config() auto_to=60 bluetoothd[11270]: src/main.c:parse_config() name=%h-%d bluetoothd[11270]: src/main.c:parse_config() class=0x000100 bluetoothd[11270]: src/main.c:parse_config() Key file does not have key 'DeviceID' bluetoothd[11270]: src/gatt.c:gatt_init() Starting GATT server bluetoothd[11270]: src/adapter.c:adapter_init() sending read version command bluetoothd[11270]: Starting SDP server bluetoothd[11270]: src/sdpd-service.c:register_device_id() Adding device id record for 0002:1d6b:0246:0513 ... bluetoothd[11270]: src/adapter.c:adapter_service_insert() /org/bluez/hci0 bluetoothd[11270]: src/adapter.c:add_uuid() sending add uuid command for index 0 bluetoothd[11270]: profiles/audio/a2dp.c:a2dp_sink_server_probe() path /org/bluez/hci0 bluetoothd[11270]: profiles/audio/a2dp.c:a2dp_source_server_probe() path /org/bluez/hci0 bluetoothd[11270]: src/adapter.c:btd_adapter_unblock_address() hci0 00:00:00:00:00:00 bluetoothd[11270]: src/adapter.c:get_ltk_info() A4:15:66:C1:0D:2A bluetoothd[11270]: src/device.c:device_create_from_storage() address A4:15:66:C1:0D:2A bluetoothd[11270]: src/device.c:device_new() address A4:15:66:C1:0D:2A bluetoothd[11270]: src/device.c:device_new() Creating device /org/bluez/hci0/dev_A4_15_66_C1_0D_2A bluetoothd[11270]: src/device.c:device_set_bonded() bluetoothd[11270]: src/adapter.c:get_ltk_info() A4:15:66:88:5E:9A bluetoothd[11270]: src/device.c:device_create_from_storage() address A4:15:66:88:5E:9A bluetoothd[11270]: src/device.c:device_new() address A4:15:66:88:5E:9A bluetoothd[11270]: src/device.c:device_new() Creating device /org/bluez/hci0/dev_A4_15_66_88_5E_9A bluetoothd[11270]: src/device.c:device_set_bonded() bluetoothd[11270]: src/adapter.c:load_link_keys() hci0 keys 2 debug_keys 0 bluetoothd[11270]: src/adapter.c:load_ltks() hci0 keys 0 bluetoothd[11270]: src/adapter.c:load_connections() sending get connections command for index 0 bluetoothd[11270]: src/adapter.c:adapter_service_insert() /org/bluez/hci0 bluetoothd[11270]: src/adapter.c:add_uuid() sending add uuid command for index 0 bluetoothd[11270]: src/adapter.c:set_did() hci0 source 2 vendor 1d6b product 246 version 513 bluetoothd[11270]: src/adapter.c:adapter_register() Adapter /org/bluez/hci0 registered bluetoothd[11270]: src/adapter.c:set_dev_class() sending set device class command for index 0 bluetoothd[11270]: src/adapter.c:set_name() sending set local name command for index 0 bluetoothd[11270]: src/adapter.c:set_mode() sending set mode command for index 0 bluetoothd[11270]: src/adapter.c:set_mode() sending set mode command for index 0 bluetoothd[11270]: src/adapter.c:adapter_start() adapter /org/bluez/hci0 has been enabled bluetoothd[11270]: src/adapter.c:trigger_passive_scanning() bluetoothd[11270]: plugins/hostname.c:property_changed() static hostname: system bluetoothd[11270]: plugins/hostname.c:property_changed() pretty hostname: bluetoothd[11270]: plugins/hostname.c:update_name() name: system bluetoothd[11270]: src/adapter.c:adapter_set_name() name: system bluetoothd[11270]: plugins/hostname.c:property_changed() chassis: desktop bluetoothd[11270]: plugins/hostname.c:update_class() major: 0x01 minor: 0x01 bluetoothd[11270]: src/adapter.c:load_link_keys_complete() link keys loaded for hci0 bluetoothd[11270]: src/adapter.c:load_ltks_complete() LTKs loaded for hci0 bluetoothd[11270]: src/adapter.c:get_connections_complete() Connection count: 0 And then I press the ps button of the PS4 controller bluetoothd[11270]: src/adapter.c:connected_callback() hci0 device A4:15:66:C1:0D:2A connected eir_len 5 bluetoothd[11270]: profiles/input/server.c:connect_event_cb() Incoming connection from A4:15:66:C1:0D:2A on PSM 17 bluetoothd[11270]: profiles/input/device.c:input_device_set_channel() idev (nil) psm 17 bluetoothd[11270]: Refusing input device connect: No such file or directory (2) bluetoothd[11270]: profiles/input/server.c:confirm_event_cb() bluetoothd[11270]: Refusing connection from A4:15:66:C1:0D:2A: unknown device bluetoothd[11270]: src/adapter.c:dev_disconnected() Device A4:15:66:C1:0D:2A disconnected, reason 3 bluetoothd[11270]: src/adapter.c:adapter_remove_connection() bluetoothd[11270]: plugins/policy.c:disconnect_cb() reason 3 bluetoothd[11270]: src/adapter.c:bonding_attempt_complete() hci0 bdaddr A4:15:66:C1:0D:2A type 0 status 0xe bluetoothd[11270]: src/device.c:device_bonding_complete() bonding (nil) status 0x0e bluetoothd[11270]: src/device.c:device_bonding_failed() status 14 bluetoothd[11270]: src/adapter.c:resume_discovery() So I don't know what is happening here and a bit of help would be appreciated.

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  • Why can't I reconnect to my Philips SHB9000 bluetooth headset?

    - by Thomas Eyde
    This is so annoying. When I connected my Philips SHB9000 bluetooth to my Windows 7 (64 bit) for the very first time, it worked well. I had to manually change the default playback device, but otherwise it worked. Then, when I start up my computer from standby, it's nearly random when I can reconnect or not. My last option is to remove the bluetooth device and reconnect it. But now, even that doesn't work. The sad thing is, this used to work better on Windows 7 beta. Windows Update has a new driver which fails to install. Searching for this driver yields nothing. I thought all vendors had an official site for their drivers? Well, Philips seems to have none. If there is no answer to this problem, my advice is to NOT buy this headset. It's good looking, the sound is nice, but what need do we have from that if we can't use the bloody device?

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  • Store XML data in Core Data

    - by ct2k7
    Hi, is there any easy way of store XML data into core data? Currently, my app just pulls the values from the XML file directly, however, this isn't efficient for XML files which holds over 100 entries, thus storing the data in Core Data would be the best option. XML file is called/downloaded/parsed ever time the app opens. With the Core Data, the XML data would be downloaded ever 3600 seconds or so, and refresh the current data in the core data, to reduce the loading time when opening the app. Any ideas on how I can do this? Having reviewed the developer documentation, it doesn't look very tasty.

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  • Core Data vs. SQLitePersistentObjects

    - by Macatomy
    I'm creating an iPhone app and I'm trying to choose between 2 solutions for a persistent store. Core Data, or SQLitePersistentObjects. Basically, all my app needs is a way to store an array of model objects and then load them again to display in a UITableView. Its nothing too complicated. Core Data seems to have a much higher learning curve than the simple to use SQLitePersistentObjects. Are there any obvious benefits of using Core Data over SQLitePersistentObjects in my case?

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  • Can Core Data be used on Linux?

    - by glenc
    This might be a stupid question, but I was wondering whether or not you can use the Core Data libraries on Linux at all? I'm planning how to build the server side of an iPhone app that I'm working on, and have found that you can use PyObjC to get access to Core Data in a Python environment, e.g. use Core Data in a TurboGears web application. At this point I'm thinking that you would have to run the web server on Mac OSX, because I can't find any evidence on the internet that you can access the Objective-C libraries on Linux. I've always written webapps on Linux but will obviously make the jump to an OSX server if it allows me to use the same datastore implementation on the iPhone and the server, the only job remaining being the Core Data <- Web Services XML translation that has to happen on the wire.

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  • How can Core Data store an NSData?

    - by mystify
    The documentation says, that core data properties can only store NSString, NSNumber and NSDate types. However, a lot of Core Data users claim Core Data could also store an NSData type. But I wasn't able to see that in the documentation, although the Xcode Data Modeler allows to choose a data type called "binary" (which seems to be NSData). Did I miss something? Is there a hidden place in the documentation that indeed lists NSData for binary stuff?

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  • Linux core dumps are too large!

    - by themoondothshine
    Hey guys, Recently I've been noticing an increase in the size of the core dumps generated by my application. Initially, they were just around 5MB in size and contained around 5 stack frames, and now I have core dumps of 2GBs and the information contained within them are no different from the smaller dumps. Is there any way I can control the size of core dumps generated? Shouldn't they be at least smaller than the application binary itself? Binaries are compiled in this way: Compiled in release mode with debug symbols (ie, -g compiler option in GCC). Debug symbols are copied onto a separate file and stripped from the binary. A GNU debug symbols link is added to the binary. At the beginning of the application, there's a call to setrlimit which sets the core limit to infinity -- Is this the problem?

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  • How to add database layer in core data application

    - by aditya
    Hi all I am fairly new to core data technology and i searched a lot on how to add the database to a core data application.so can anybody guide me on how to integrate the database layer? i have seen the iphone tutorial on core data (i.e books example) but i am not able to understand how to .sqlite file has been included in that application

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  • Activation context generation failed for "C:\php\php-cgi.exe". Dependent Assembly

    - by Eyla
    Greeting, I have Windows Server 2008 Server Core. I want to configure this server to host php websites using IIS 7. I installed and configured IIS7 to run php using the steps in this website: http://blogs.msdn.com/b/philpenn/archive/2009/07/19/deploying-iis-7-5-fastcgi-php-on-server-core.aspx Now I’m facing a problem that when I request my php website I would get this error. Server Error 500 - Internal server error. There is a problem with the resource you are looking for, and it cannot be displayed. I check the even log and I found these details too: Activation context generation failed for "C:\php\php-cgi.exe". Dependent Assembly Microsoft.VC90.CRT,processorArchitecture="x86",publicKeyToken="1fc8b3b9a1e18e3b",type="win32",version="9.0.21022.8" could not be found. Please use sxstrace.exe for detailed diagnosis. I search about this error and I found a solution for it but which is to install Microsoft Visual C++ 2008 SP1 Redistributable Package (x86). I installed but still I’m getting same error. Please help me to solve this problem and let me know if you want to know more info about my issue.

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  • I need help choosing between two configurations of the Dell Studio 14

    - by Adnan
    There are two configurations of the Dell Studio 14 (1458) which I'm looking at: Config 1: Core i7-720QM @ 1.6 GHz; ATI Mobility Radeon HD 5450 1GB; 4gb DDR3 RAM @ 1066 MHz; 500 GB SATA HDD @ 7200 RPM; Price: $999 Config 2: Core i5-430M; ATI Mobility Radeon HD 4530 512MB; 4GB DDR3 RAM @ 1066 MHz; 500 GV SATA HDD @ 7200 RPM; Price: $874 What I want to know is, would config 1 still be able to do decent gaming (maybe some Starcraft II), and is there a great performance difference between the i5 and i7 processors? Is the $130 extra worth it for the i7 and better graphics card? I do more than just basic computing. I plan on getting into web design (specifically using Photoshop and Dreamweaver), and I wish to do gaming. I know Conifg 1 is the better value, but I want to be sure that the $130 more is truly worth it. I dont have too much money and want to spend wisely as possible, yet I am a computer geek and plan on doing a lot more than the average user.

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  • How do I ensure my Apple keyboard connects on boot?

    - by Stacey Richards
    I am using Ubuntu 10.04 on a laptop and have an Apple wireless keyboard which pairs fine. Every time I turn my computer off and back on again my keyboard stops working. I have to use the keyboard on my laptop to log in. Once I've logged in, in order to get the wireless keyboard to work, I need disconnect and reconnect it by: Clicking on the Bluetooth icon, select Apple Wireless Keyboard from the drop down menu, then click on Disconnect. Clicking on the Bluetooth icon, select Apple Wireless Keyboard from the drop down menu, then click on Connect. Looking through syslog, to see what's happening during boot, I find: Nov 25 10:29:21 sony kernel: [ 24.525372] apple 0005:05AC:0239.0002: parse failed Nov 25 10:29:21 sony kernel: [ 24.525379] apple: probe of 0005:05AC:0239.0002 failed with error -14 and then later in syslog, once I've disconnected then connected the keyboard, I find: Nov 25 10:30:14 sony bluetoothd[1247]: link_key_request (sba=00:21:4F:49:8A:DB, dba=E8:06:88:5A:E0:D4) Nov 25 10:30:14 sony kernel: [ 79.427277] input: Apple Wireless Keyboard as /devices/pci0000:00/0000:00:1d.2/usb8/8-1/8-1:1.0/bluetooth/hci0/hci0:12/input11 Nov 25 10:30:14 sony kernel: [ 79.427611] apple 0005:05AC:0239.0003: input,hidraw1: BLUETOOTH HID v0.50 Keyboard [Apple Wireless Keyboard] on 00:21:4F:49:8A:DB I can't find anything helpful when Googling "apple: probe of failed with error -14".

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