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• Ubuntu Linux: Process swap memory and memory usage

  - by David Halter

  My Ubuntu eats more memory than the task manager is showing: sudo ps -e --format rss | awk 'BEGIN{c=0} {c+=$1} END{print c/1024}' 1043.84 free -m total used free shared buffers cached Mem: 3860 1878 1982 0 20 679 -/+ buffers/cache: 1178 2681 Swap: 2729 1035 1693 That's strange. Can someone explain this difference? But what is more important: I'd like to know how much memory a process is really using. I don't want to know the virtual memory size, but rather the resident memory plus swap of a process. I have also tried to output the format param "sz" of 'ps', but the sum of this is to high (5450 MB) (param 'size' gives 8323.45 MB). Are there any other options? I really want to use this, to determine which programs/processes are eating to much memory (and swap), to kill them, because hibernate might not be working if the swap partition is to little.

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• Qt - invalid conversion to child class

  - by David Davidson

  I'm drawing polygons using the Graphics View framework. I added a polygon to the scene with this: QGraphicsPolygonItem *poly = scene->addPolygon(QPolygonF(vector_of_QPointF)); poly->setPos(some_point); But I need to implement some custom behaviour like selection, mouse over indicator, and other similar stuff on the graphics item. So I declared a class that inherits QGraphicsPolygonItem: #include <QGraphicsPolygonItem> class GridHex : public QGraphicsPolygonItem { public: GridHex(QGraphicsItem* parent = 0); }; GridHex::GridHex(QGraphicsItem* parent) : QGraphicsPolygonItem(parent) { } Not doing much with that class so far, as you can see. But shouldn't replacing QGraphicsPolygonItem with my GridHex class? This is throwing a " invalid conversion from 'QGraphicsPolygonItem*' to 'GridHex*' " error: GridHex* poly = scene->addPolygon(QPolygonF(vector_of_QPointF)); What am I doing wrong?

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• vps like [load] graphs

  - by foober

  I investigated a couple of tools but they were really annoying and not polished. kSar for exampe is supposed to graph sar output, but it doesn't work. There's a perl script around (sar2rrd) that's supposed to convert sar output in rrd format and generate graphs. Doesn't work. (at least it doesn't like the output of "atsar" as per debian/ubuntu package). Tried munin but it wants to mess with http servers, and for some reason it didn't really work, too. It displayed errors in the webpage generated by the http server it put on port 4949. So, is there a simple install and forget tool to generate daily load,cpu,memory,network graphs? It seems strange to me that this problem has not been solved, maybe I'm looking in the wrong places

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• OSX Lion - Stuck in Drag mode and mouse click events are not going through. Can I manually generate a mouseup event?

  - by Yuji Tomita

  My mouse is stuck in "drag" mode. This generally happens in Photoshop, but happens dragging files and such as well. Clicking rapidly here and there generally solves the problem. Sometimes though, it won't go away until a restart. Unplugging devices, etc., doesn't do anything. For example, right now, my mouse moves but can not click anything so I am using the keyboard to navigate this site. Is there a way to "reset" however the OS stores mouse states? Can I manually fire off a MouseUp event? It's strange that even when human input devices are unplugged, the files are still in drag state.

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• How to version control config files pragmatically?

  - by erenon

  Suppose we have a config file with sensitive passwords. I'd like to version control the whole project, including the config file as well, but I don't want to share my passwords. That could be good, if this config file: password=secret foo=bar becomes password=* foo=bar and the other users of the vcs could also set up the password on they own. To ignoring the file isn't a good approach, the developers should be aware, if the config file changes. Example: Local version: password=own_secret foo=bar config file in vcs: password=* foo=bar Then suddenly, the config file changes: password=* foo=bar baz=foo And the local version would become for each developer: password=own_secret foo=bar baz=foo This is my solution. How could I achieve this behaviour? How do you store your config files? Is there a way to do that, or should I hack something?

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• Windows 7 wifi reports "no network access" and "no internet access" but connects in fedora

  - by rick2047

  I am running windows 7 home basic (64bit) on a Acer 5742G laptop with Atheos wifi adapter in it. Yesterday, I hiberneted my computer as I always do and up untill then the wifi was working fine. When I booted my computer up again today I started having a strange problem: It detects my wifi but after connecting to it, it keeps on oscillating between states of no network access and no internet access. I can't connect to anything (the internet or my router). I tried to reset my internet protocol stack using this fixit file. I also tried to uninstall and reinstall my network driver. Neither helped. I am using the same laptop's fedora installation right now and the wifi is working perfectly fine. Please help. Edit To add additional details, I have Microsoft Security essentials as my antivirus software and I haven't messed with the firewall or the router configurations.

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• Automatically copy new Jar file to Tomcat project WEB-INF/lib folder

  - by The D Williams

  I am developing a Tomcat app (actually it's a Red5 app, but this is effectively the same). This contains the usual /WebContent/WEB-INF/lib folder, which is where I locate the various jars it uses. Recently, I pulled a package out of my app project, and converted into a separate Jar project which was then released as open source (this resides in the same workspace). What I want, is that when I build my Tomcat app, that Eclipse automatically pulls the latest version of the Jar I have built into its /WebContent/WEB-INF/lib folder. This is the behaviour you get with .NET when you reference one project from another, and I guess this is why I was expecting to find some way of doing it. At the moment, I have to manually copy/paste the Jar across each time I build it. Of course, ideally when I build my Tomcat app it would automatically detect if the Jar project was up-to-date too, and build it if not. Any suggestions most gratefully received.

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• How can I mark a file as descended from 2 other files in Mercurial?

  - by Matt Joiner

  I had 2 Python similar scripts, that I've since merged into one (and now takes some parameters to differ the behaviour appropriately). Both of the previous files are in the tip of my Mercurial repository. How can I indicate that the new file, is a combination of the 2 older files that I intend to remove? Also note, that 1 file has been chosen in favor of the other, and some code moved across, so if it's not possible to create a version controlled file with a new name, then assimilating one file's history into the other will suffice.

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• Missing Right Click Menu Text After Sleep

  - by petebob796

  I have a laptop running Windows 7 and regularly close the lid to put it in sleep mode. Recently after resuming from sleep if I go to access the right click menu in the windows shell when I hover over the menu items the text disappears and doesn't re-appear without closing the menu and right clicking again. The only way to fix this is to restart. Any ideas what could be causing this? I have an nvidia 8600m gs graphics card which had a BSOD problem a while back at boot up but since I underclocked it slightly it has been running fine and I experience no other issues but this. This only affects right click menus that are part of the windows so not any programs right click menu. It's not a major problem just strange and a little annoying.

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• Need Help Debugging BSOD

  - by nmuntz

  For the last few days I've been getting a BSOD at least once a day. Apparently the crash has been caused by ntkrpamp.exe and searching on google has revealed that the issue seems to be related to bad RAM. I have run memtest and my RAM modules have no errors on them. I'm pretty sure the issue is related to drivers, but I can't figure out which one. I'm not an expert in interpreting the output of windbg so any pointers would be greatly appreciated. Here is my analysis with WinDbg. It was too long to paste it here. One strange thing i noticed is that my Windows XP is in Spanish (SP3) and ntkrpamp.exe copyright info seems to be in portuguese. Not sure if that could be an issue, perhaps i have the wrong ntkrpamp.exe... Thanks a lot in advance

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• Terminal Server 2003 Performance Troubleshooting

  - by MikeM

  Let me get your thoughts on terminal server performance problems. The server hosts average 25 users which, after running some numbers, on average use 600MB memory with their main applications running (web browser, adobe reader, IP phone client). All users are on the same LAN as server. We constantly experience slow response and short session lockups. Combined CPU usage is on average 10%. What appears strange to me is that the system shows 29GB physical memory with 25GB of it free. The page file usage is about 50% averaging 9GB used. Some server specs OS: Server 2003 32bit Enterprise with /PAE flag RAM: 32GB CPU: 2xQuad Core @ 2.27Ghz HD: RAID5 1.2GB After doing basic troubleshooting using performance monitor it leads me to believe that the performance problems are caused by the 32bit OS limitation in addressing full 32GB of physical memory even though the /PAE flag is used. Can anyone suggest something, troubleshooting steps that can lead to a more conclusive answer? Thanks

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• Computer sending data while turned of

  - by Nicklas Ansman

  I have a some what strange problem (which could have and easy and obvious solution for all I know). My problem is that when I've booted ubuntu (now 10.4 but same problem with 9.10) and turns it off it starts sending a HUGE amount of data via the ethernet cable, so much in fact that my router can't handle it and stops responding. As far as I can tell the computer is completely turned off with no fans spinning. I can add that if I boot windows I do not have this problem, just when exiting ubuntu. There are two "fixes" for my problem: Pull the ethernet cable until the next boot Turn off power to the PSU and wait for the capacitors to unload Is there anyone who knows what could be going on? I'd be happy to post some logs or conf-files. Currently I'm using the ethernet port on my motherboard which is a Asus P6T Deluxe V2 with an updated version of the BIOS (maybe not the latest but since it only happens when I've been in ubuntu I don't wanna mess with the BIOS too much). Regards Nicklas

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• Downloading content greater than 2000 bytes from local network hangs in browser on Windows XP

  - by artplastika

  We have web application that runs under Tomcat in a local network. Our customers experience strange problem using this web application. Let's say Tomcat server runs on host1 and we open webapp URL in browser on host2. Any browser on host 2 starts opening page and downloading of content "hangs" for hours. We've made bunch of experiments and found that any content larger than 2000 bytes makes browser request hang. Tried in Internet Explorer 8, Opera 12, Firefox. At the same time if user opens website from internet, it works. Opening webapp from the same host1 where Tomcat is running works normally. Local network is organized with D-Link DGS-3120-48TC switch. Additional info. During experiments we've noticed XP Tweaker installed on hosts. Network settings from that tool: MTU is manually set to 1500 RWIN = 14600 Support of TCP frames larger than 64 KB is on Time to Live = 32 SACK is on

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• forcing Management Studio to use alter table instead of drop/recreate

  - by marco

  Hi! I'm wondering if is there a way to force MSSQL Management Studio to produce a script like this: ALTER TABLE Mytable ADD MyCol bit NOT NULL CONSTRAINT MyColDefault DEFAULT 0 WITH VALUES ALTER TABLE [dbo].Mytable ALTER COLUMN MyCol2 int NULL GO when I alter a very simple property of a column on a table. If I do this in the designer and ask for the produced script, the script doesn't do such simple tasks, but instead copies all the data in a tmp table, drops the original table, renames the tmp table with the original table name. And, of course, drops and recreates every constraint and relationships. Is there any option I can change to change this behaviour? Or, this may be possible, is there some danger I don't see in using the simple ALTER TABLE above? thanks.

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• Wireless is connected but no internet when PC Turns on

  - by mhesabi

  I have a PC that is connected to ADSL Modem router (linksys WAG54g2) directly via Ethernet cable And a laptop and also other devices such as another laptops and smarth phones. However when I turn On the PC or turn it off, some strange problem happens. My wireless network seems connected on laptop but there is no internet activity and can't open a webpage until I turn router off and on again manually. (other devices including the PC itself can't use the internet either) My router configured this way: Encapsulation: RFC 2516 PPPoE Multiplexing: LLC DHCP Server: Enabled and network sharing center IPv4 configuration is obtain IP address automatically How Can I fix this issue?

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• jCarousel not working properly within tabbed menu

  - by user369292

  Hi everybody, I'm riding three different jCarousel ul, one in each target of a tabbed menu designeb by Yetii. The problem issue is that the one in the first target works well, whereas the remaining two show just a slice of the first picture and slide soon onto a back frame. The jCarousel is initialized by a class as the behaviour required is the same for all targets: jQuery(document).ready(function() { jQuery('.jcarousel-skin-tango').jcarousel({ wrap: 'circular', //size:8, scroll:1, animation:.10, auto:5, }); }); The ul have different id. Tried also initializing the script by separate id but nothing changed. Any suggestion on it? Thanks in advance - Mauirizio

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• What option in Visual Studio let catching exception where it occurred?

  - by macias

  VS 2010. The same WPF project, debug mode, two computers: A -- when exception occurrs the caret is placed at the point of exception B -- when the exception occurrs, correct exception is placed but always caret is placed at "win.ShowDialog()" in App.xaml.cs -- this is main entry for showing & running my application, in such case it is very tiresome to track down where the exception occurred What kind of settings control such behaviour? Of course I would like to switch B, so when exception hits I would be place at the point of exception, not at the main entry.

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• At what point should I change the way Struts acquires the session token?

  - by Hanno Fietz

  It seems I have to find a different way to transmit the session token from a Flex client to a Struts backend without using cookies. If I were to put the session token in the payload of a request, at what point would I have to customize Struts' behaviour so that I can reuse as much of the existing session handling as possible? In particular, I don't want to reimplement whatever security measures (such as tying a token to an IP) and configuration parameters (such as session expiration interval). There's a CreateSession interceptor, rather early in the default stack, should I swap that with a subclassed version?

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• iPad javascript scrolling

  - by davids

  I'd like to get the same behaviour of the native javascript scrollTo function in iPad, just attaching a function to the swipe event and scrolling the content a specific number of pixels. That doesn't work in iPad using scrollTo or several different jquery plugins, like scrollTo or iScroll. I think I'm having problems because I'm working with an iframe, as I have another html document in it, with its body divided in columns, but I'm just showing the first one. The point of all this is that, after swiping, it should show the next/prev column, and I tried scrolling the iframe window or the inner's html body, which actually works in chrome, but it doesn't in iPad.

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• In Outlook 2013, the reading pane does not display images correctly for most emails (but does for some)

  - by smoldyr

  I am running Microsoft Office Outlook 2013 on Windows 7 Enterprise. When I click on an email in the list of messages, the preview of the message in the reading pane usually will not show the images contained in the email, but instead will show a red 'X'. Sometimes this red 'X' is followed by the text "The linked image cannot be displayed. The file may have been moved, renmaed, or deleted. Verify that the link points to the correct file and location." I am using an IMAP email account. The really strange thing is that for some emails, the images will display, although they take a long time to load. How can I make the images show up in the reading pane?

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• How do I get a div to float to the bottom of its container?

  - by Stephen Martin

  I have floated images and inset boxes at the top of a container using float:right (or left) many times. Recently I hit a need to float a div at the bottom right corner of another div with the normal text wrap that you get with float (text wrapped above and to the left only). I thought this must be relatively easy even though float has no bottom value but I haven't been able to do it using a number of techniques and searching the web hasn't come up with anything other than using absolute positioning but this doesn't give the correct word wrap behaviour. I had thought this would be a very common design but apparently it isn't. If nobody has a suggestion I'll have to break my text up into separate boxes and align the div manually but that is rather precarious and I'd hate to have to do it on every page that needs it.

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• Making sure unsigned int/long always execute in checked context in C#

  - by theburningmonk

  Has anyone found it strange that the default context for uint and ulong is unchecked rather than checked considering that they are meant to represent values that can never be negative? So if some code is trying to violate that constraint it seems to me the natural and preferred behaviour would be to throw an exception rather than returning the max value instead (which can easily leave important pieces of data in an invalid state and impossible to revert..). Is there an existing attribute which can be applied to either class/assembly so that it always performs arithmetic operations in a checked context? I was thinking of writing one myself (as an aspect using PostSharp) but would be great if there's one already. Many thanks,

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• Sometimes tabs in notepad++ won't make a new window when dragged out

  - by darenw

  Long-time Linux user on a Windows 7 machine, using Notepad++ to edit multiple text files. Sometimes I can drag a tab out of the notepad++ window onto the desktop to get a new notepad++ window. This is a very nice feature. But sometimes when I try to drag a tab out, nothing happens. I don't see what is different about these tabs or the files they contain. It is repeatable; the same tab still won't make a new window. I'm not familiar enough with Windows and its strange ways to begin to guess what is going on, unless it's a bug. How can I make all tabs draggable-to-new-windowable, no exceptions?

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• Activity triggered by a click on a Notification

  - by Zelig63

  From a Service, I trigger a Notification which, when clicked, has to launch an Activity. To do this, I use the following code : notification=new Notification(icone,title,System.currentTimeMillis()); intent=new Intent(getApplicationContext(),myActivity.class); intent.putExtra("org.mypackage.name",true); intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); pendingIntent=PendingIntent.getActivity(getApplicationContext(),0,intent,PendingIntent.FLAG_ONE_SHOT); notification.setLatestEventInfo(getApplicationContext(),title,"Message",pendingIntent); notification.flags|=Notification.FLAG_AUTO_CANCEL; ((NotificationManager)contexte.getSystemService(Context.NOTIFICATION_SERVICE)).notify("label,0,notification); When I click on the Notification, the Activity is correctly launched. But it's Intent doesn't contain the extra boolean added with the line intent.putExtra("org.mypackage.name",true);. Does anyone have an idea of this behaviour? I can add that I use Android 4. Thanks in advance for the time you will spend trying to help me.

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• Windows 7 Skype shifts audio to speakers

  - by Greg Reynolds

  I have noticed a strange feature on my Dell Latitude running Windows 7 and Skype. When I am listening to music on the headphones, and Skype rings, then the audio I was listening to is redirected to the computer speakers, while Skype takes over the headphones. This is infuriating as my co-workers are treated to 1 second snippets of whatever rubbish I have on at the time. Any ideas on how to stop this happening? I messed with some of the settings on Skype, but nothing seems to make any difference.

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