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• Ubuntu One has high CPU usage but no syncing

  - by Peter

  over the weekend I updated my computer to Windows 8. So far Ubuntu One was running smoothly, but ever since the update (clean, new install) Ubuntu doesn't sync any more. In Windows 7 it would start to sync at full internet speed as soon as I drop a file. But now in Windows 8, as soon as I drop a new file into the Ubuntu One folder, CPU usage goes up to about 50 % and no network traffic occurs. This stays like that for a couple of minutes, CPU usage goes back to normal and then the client says that all is in sync - which isn't true. Is it too early for Windows 8? Do others have the same problem or is there something I can do about it? I try a couple of different things, and realized that if the file size is 20 MB the files get uploaded. The original file was 1.5 GB. I also didn't work with 200, 100 and 50 MB large files. But even with 20 MB large files, the upload is very slow and not steady. The log give plenty of this error: - twisted - ERROR - Failure: exceptions.TypeError About which I don't know the meaning. By the way, the account works just fine on the Ubuntu 12.04 partition. Any help is greatly appreciated. -Peter

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• Why is Thunderbird pegging a core at 100%?

  - by david6

  I have experienced 2-3 unexplained lockup over last 10 days. Today, I had a random lockup (no mouse, keyboard response, 100% CPU). But, when I finally switched (Ctrl-Alt-F1) to command line (it took several minutes) it told me that thunderbird-bin had locked a CPU. I ran this to resolve: pidof thunderbird-bin sudo kill #### However, after saving other work, I tried restarting Thunderbird. It went to 90%+ CPU, and within 20 seconds it locked again. Once I have more detail I will raise a bug (on Ubuntu Forums). Does anyone have any other suggestions, advice? UPDATE Thunderbird 13.0.1 is quite stable in safe mode. Still working to resolve ..

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• How can I get my mysqld-swamped CPU under control?

  - by Shay Guy

  I was AFK for about 24 hours and came back to find gnome-system-monitor saying all four CPU cores on my laptop were running at full throttle. mysqld is taking up more than one full core; when I tried to end the process, it restarted with a new PID. Then there's ksoftirqd/0-3, which apparently has something to do with interrupts, but I can't tell from Google what I'm supposed to do with those four particular processes. They're taking up a quarter or more of my processor cycles. Then there's Chrome, but I can probably handle that on my own -- how do I cool down the other processes giving me problems?

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• Approach to retrieve files from server

  - by Aerus

  I'm in the process of making a Java application with a corresponding update application. At any given time the user may want to update the application and the updater will ask for a list of files of the latest release. Based on this list, the updater can determine which files need to be downloaded to complete the update. I now have 2 approaches to solve this, but i would like to know what approach will put the least stress on my application and server. I could send a list of files i want to download to my server and the server zips the files and simply returns this compressed file to the application. The updater sents a request for each seperate file to the server, which simply returns the file The application will be used mainly in Belgium and The Netherlands and connections/bandwidth tend to be pretty decent in here. The average size of a single file should be around 100Kb and at most 1Mb. I expect an update to have anywhere between 10 to 50 new files. I expect at most 100 persons/day to update the application, i.e. in the week when a new version is released. I hope this is enough information to sketch my problem and any advice is welcome. If there is another common way to tackle this, i'd be glad to hear it.

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• Cheap server stress testing

  - by acrosman

  The IT department of the nonprofit organization I work for recently got a new virtual server running CentOS (with Apache and PHP 5), which is supposed to host our website. During the process of setting up the server I discovered that the slightest use of the new machine caused major performance problems (I couldn't extract tarballs without bringing it to a halt). After several weeks of casting about in the dark by tech support, it now appears to be working fine, but I'm still nervous about moving the main site there. I have no budget to work with (so no software or services that require money), although due to recent cut backs I have several older desktops that I could use if it helps. The site doesn't need to withstand massive amounts of traffic (it's a Drupal site just a few thousand visitors a day), but I would like to put it through a bit of it paces before moving the main site over. What are cheap tools that I can use to get a sense if the server can withstand even low levels of traffic? I'm not looking to test the site itself yet, just fundamental operation of the server.

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• How do i fix the slow scroll in browsers and high XOrg cpu usage

  - by Virgil

  I am facing an issue while scrolling in browsers(firefox, chrome, and opera) , scroll is jagged and slow. Also when scrolling the cpu usage spikes. I am currently running ubuntu natty(beta 1), switched from ubuntu 10.10 where the problem was worse. I am using the nvidia beta driver, which ubuntu installed automatically. My graphic card is nvidia Quadro NVS 150M. I tried running ubuntu without the effects on , but when using multiple applications at the same time xorg usage spikes again. Additional info: 2GB of RAM and an intel core 2 duo processor. Any help would be greatly appreciated. Thanks in advance!

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• Can certain system-hungry modules be disabled in Ubuntu?

  - by Ole Thomsen Buus

  Hi, Let me add some context: I am currently using Ubuntu 9.10 64-bit (Desktop) on a relatively powerful stationary PC (Intel Core i7 920, 12GB ram). My purpose is highspeed imaging with a pointgrey Grashopper machine-vision camera (for research, PhD project). This camera is capable of 200 fps at full VGA (640x480) resolution. The camera is connected using Firewire (1394b) and the drivers and software from Pointgrey works great. I have developed a console C++ application that can grap a certain number of frames to preallocated memory and after this also save the grapped frames to harddrive. Currently it works fine but sometimes I am observing a few framedrops (1-3). When this happens I reset the experiment and repeat the recording and usually i am lucky the second time with no framedrops (the camera-driver has a internal framecounter that I am using). Question: I usually go to tty1 and use "sudo service gdm stop" to disable the graphical frontend. It seems to release some memory though that is not my main concern. My concern is CPU resources. Are there other system hungry modules that can be disabled temporarily such that the CPU gets less busy on Ubuntu 9.10? At some point in the future I will update to 10.10. Should I perhaps option for the server edition instead? Thanks.

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• Need help with gimp 2.8 (cpu not used to full capacity) [closed]

  - by Birgir Freyr

  I know this isn't the right place to ask this question but maybe some one here can point me out to were I should place this question (or help me fix it :)). Since I updated Gimp to 2.8 (and let me start by saying how happy I am with the new gimp) I have notice that Gimp only uses 35% max of my CPU power. I have tried changing settings, assigning only one CPU to Gimp (both in gimp preference and in windblows task manager). No matter what settings I choose it only uses 35% of the cpu. If I assign just one Core to it then Gimp will use 100% of that core (which is about 35% of a three core processor I have. Any thoughts? I am using Windblows 7 64 bit, gimp 2.8.0, AMD a6-3500 cpu. I also use Ubuntu (am going to see if it works the same there). Any help would be great.

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• Ubuntu 12.04 GNOME Terminal (3.4.1.1) Xorg 100% CPU

  - by EaZ

  after upgrading Ubuntu 11.04 to 12.04 (x64 arch) maximizing or resizing GNOME Terminal (3.4.1.1) windows larger cause the Xorg (1.11.3) or X process to utilize 100% CPU. Resizing smaller, moving windows or minimizing do not seem to have the same impact but by no means are snappy either. I'm running on a Dell E6500 laptop (upgraded from 11.04) running the nvidia proprietary drivers v. 295.49 (Quadro NVS 160M) with compiz 0.9.7.8. Other terminals such as xterm/uxterm are unaffected. Hoping it has to do with some configuration settings but not sure where to look (nvidia/compiz/gnome/X?). Thanks!

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• Is there anything software-related I can do, to make ubuntu play high-quality mkv files smoothely?

  - by Roy

  I've noticed that beyond let's say..a 20 MB/s bitrate, a movie would lag, played on my laptop.. It results in me missing the highest bitrated scenes of a movie.. And sometimes having to compromise for watching the movie at a lesser quality.. I was wondering if there's anything I can do software-wise to play movies smoothley..? At the moment Ubuntu is installed with all the default settings on an 60GB SSD I use VLC ofcourse.. I also have 2 1TB HDD - maybe I can use them as pagefiles? I don't really know alot about this so maybe this is irrelevant.. I took the laptop battery out since it was dead..but I think this is also irrelevant.. would appriciate a response, even if there's nothing that can be done software-wise :)

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• Windows NLB + IIS - Stops serving pages

  - by Ye Ol Developer

  We are currently running Windows NLB and IIS7 load balanced across two servers. What happens is randomly and sporadically the servers stop serving web pages. What we have noticed is that if we run the sites on a dedicated IP on either of the servers, these issues do not exist. As soon as we switch back to the load balanced IP, then everything goes awry. When the servers stop serving pages, we can still TS into the server and surf them internally without issues, or switch to the dedicated IP. However the internal network cannot even access the files from the load balanced IP. We are running out of idea's here. Has anyone had a similar problem?

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• Is this CPU usage normal for Xorg?

  - by Samuaz

  I checked System Monitor to see if the frequency of my CPU increases without doing anything and saw that xorg is always using 10-40% of the CPU even if it's not doing much of anything on the desktop or simply surfing the Internet. Is this normal? If not, how can I fix it? I have: a Macbook white 4,1 Core2 Duo running at 2.10 GHz GPU Intel GMA X3100 4GB of RAM Ubuntu 11.04 I am running Unity and I do not have many effects enabled. I have only activated Compiz animations, scale, desktop, some shadows...

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• Single web app, multiple web servers

  - by Ramakrishna

  I have a problem of load balancing. We developed a web app for nearly 1500 users. As the number of users increased we are unable to serve the requests in a timely manner. It takes around 10 to 20 seconds to load a page. Under heavy load it can take one minute to serve the page. We need to solve this situation so that each request is served in 2 or 3 seconds. App develped in : asp.net Hosted in : IIS 7.5 Machine configuration : Windows Server 2008, 8GB RAM, 1Mbps bandwidth

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• Java file manager won't load in Firefox

  - by Arthur

  I am using Webmin and I can't get the file manager to load in Firefox. It is a simple, Java based file manager. When I try to load it I get the following error: This module requires java to function, but your browser does not support java Internet Explorer works fine and I have yet to try on Chrome. Java is installed and I have the same problem on Windows and Linux. Java seems to work fine with everything else, with the exception of webcams. Any advice on the issue would be appreciated. Edit: I just checked and it doesn't work in Chrome either.

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• Load website and fill form from the command line

  - by Martin Scharrer

  Using the Linux command line (Bash shell) I like to load a specific website in my browser (normally Firefox, but other one would be ok as well as long it runs under Linux) and fill a pre-defined form with some data. Actually, this should run from a Makefile. Most of the form data is static and will be stored as variables in the Makefile, just some fields are to be filled manually before manually sending the form. I know how to load the website in question from the command line using: firefox <URL> But there seems no possibility to fill the form automatically with variables given on the command line. Is there a plugin, executable or JavaScript which allows me to do this? Any suggestions and hints are welcome. I don't mind coding some JavaScript.

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• MySQL Database Replication and Server Load

  - by Willy

  Hi Everyone, I have an online service with around 5000 MySQL databases. Now, I am interested in building a development area of the exactly same environment in my office, therefore, I am about to setup MySQL replication between my live MySQL server and development MySQL server. But my concern is the load which will occur on my live MySQL server once replication is started. Do you have any experience? Will this process cause extra load on my production server? Thanks, have a nice weekend.

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• PHP Startup: Unable to load dynamic library '/usr/lib/php5/20100525/apc.so'

  - by user3207586

  I have updated my php from 5.3.3 to 5.4.31. I have a Debian 6 Squeeze. PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php5/20100525/apc.so' - /usr/lib/php5/20100525/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php5/20100525/suhosin.so' - /usr/lib/php5/20100525/suhosin.so: cannot open shared object file: No such file or directory in Unknown on line 0 During the installation, the system ask me if I want to keep the actual php.ini or put the new one. I said to keep the actual one. Now, I have this 2 errors when I restart Apache.. What should I do to solve them?

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• How do I objectively measure an application's load on a server

  - by Joe

  All, I'm not even sure where to begin looking for resources to answer my question, and I realize that speculation about this kind of thing is highly subjective. I need help determining what class of server I should purchase to host a MS Silverlight application with a MSSQL server back-end on a Windows Server 2008 platform. It's an interactive program, so I can't simply generate a list of URLs to test against, and run it with 1000 simultaneous users. What tools are out there to help me determine what kind of load the application will put on a server at varying levels of concurrent users? Would you all suggest separating the SQL server form the web server, to better differentiate the generated load on the different parts of the stack?

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• Internet Explorer 9 takes a long time to load websites

  - by Steve

  IE9 on Windows 7 would load Google okay, and we could search on Google okay, but almost any other website would take an inordinate amount of time to load. The loading sprite would sit there indefinitely. I uninstalled IE9 to roll back to IE8, and the same issue occurs. We've reset IE settings back to defaults, and there are no add-ons causing this. Firefox loads websites fine on this computer. Could it be an IE-specific virus/trojan? IE was displaying an incorrect/hijacked home page.

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• ISP Load Balancing with ISA 2006

  - by Bill Best

  I understand that ISA 2006 has an integrated Network Load Balancing feature. We also recently acquired a second internet line through a second service provider. I know it is possible to purchase a NLB router for using both incoming lines but this is not the route we would like to take if at all possible. Thus, is it possible to have two ISA 2006 servers each with there own external connection, Load balanced to be viewed as one gateway? My thought was to have two ISA servers each with three NICs, one external, one internal and one for cross communication. I am under the impression that this should work but was hoping someone else has had experience with it.

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• Google Chrome Automatic Page Load

  - by WDC

  Google Chrome keeps loading the second page of certain websites which is helpful on sites like Netflix so that instead of clicking on a link for page 2, I can just continue scrolling down and it'll automatically have the next page ready for me. But on online clothing sites, it just gets backed up loading all the next pages, misplacing links and loading the next page so that it actually replaces the page I'm trying to view literally every millisecond. Considering clothing sites generally have upwards of 20 to 200 pages of clothing, this is really annoying since Chrome tries to load all of them. How do I turn off the automatic page load???

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• Load balancing two web servers with ultra monkey

  - by Mark L

  Hello, In 2006 a company I was working with setup two load balancers to balance traffic between two web servers. We used ultra monkey to do so. I'm hoping to do the same now. My question: Would anyone recommend using ultra monkey to balance traffic between two linux boxes running apache? Are there other linux-based alternatives which have since proven to be better for this task? Would you still install debian sarge on a load balancer given it's age? Thanks everyone!

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• Load login shell inside user cronjob

  - by sa125

  I'm trying to run a rake task using a scheduled cronjob. My crontab looks something like this: 0 1 * * 1-7 /bin/bash -l -c "cd ~/jobs/rake && rake reports:create >> ~/jobs/logs/cron.log" Ruby on my account is provided by RVM, which is loaded via ~/.bashrc (before the no-interaction check): # load RVM env [[ -s $HOME/.rvm/scripts/rvm ]] && source $HOME/.rvm/scripts/rvm # If not running interactively, don't do anything [ -z "$PS1" ] && return # ... rest of logic Time and again, this task fails to run since RVM isn't loaded when the task is called (uses system's /usr/bin/ruby instead), and gem dependencies are missing. How can I make crontab load my shell environment before executing my scheduled jobs? thanks.

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• Remote Desktop app can't connect through VPN or through RDP load balancer

  - by nhinkle

  Using the regular Remote Desktop Client (in the desktop environment) I can connect just fine to remote servers when connected through Cisco VPN or when accessing a server behind a load balancer. When using the Remote Desktop app in the Modern UI, I can't do either of these things. Trying to connect to a remote server that's on a private network fails with: Can't find server, make sure the name and domain are correct and try again And connecting to a server that's behind an RDP load balancer fails with the following error, after accepting credentials: Because of a protocol error, this session will be disconnected. Please try connecting to the remote PC again Is there some way to use the Remote Desktop app in these situations, or am I just out of luck?

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• Firefox: Load local html file when opening new tab

  - by user81430

  A couple of months ago, I configured Firefox to load a local html file containing my commonly-used links whenever I open a new tab This week I've been trying to find where I set this up. I cannot find this setting anywhere in the Firefox options. Somewhere there is (or was) a dialog box with an item that said something like 'Page to load in new tab'. Where was it? Could Mozilla have removed it in the latest upgrade? I'm not using any extensions but LastPass, so it's not controlled by an extension.

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