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• How many xml http requests is too much for a pc to handle?

  - by Uri

  I'm running mediawiki on an apache on a regular pc running vista (don't know the specific specs, but I'm guessing at least duo core 2 2 giga hertz processor, broadband connection (500 kb/s at least, probably 1 mega). I want to use the MediaWiki api to send a lot of requests to this server. Most of the time the requests will be sent through LAN (but sometimes through the internet). I'm talking thousands of requests every few seconds at worst case. (A lot of these requests may repeat themselves, I guess some sort of cache would help) Will the server handle this, or do I need a stronger/dedicated computer? (I'm not looking for specific yes/no, but just want to get an idea as to what configuration of computer will support how many request per second) Thanks

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• pscp: how to copy a file from a windows machine to a non-home location on another windows machine?

  - by help

  I want to copy a file from C:\temp on MachineA to C:\final on MachineB. I tried to use the following command, but it gave me an error (permission denied): C:\PROGRA~1\putty\pscp.exe -i C:\PROGRA~1\cwRsync\home\rcadmin\.ssh\id_rsa_private.ppk [email protected]:C:\final\test.txt C:\temp\test.txt It turned out I can only access C:\users\direcpc in my source computer. So if I put the file in C:\users\direcpc\text.txt, then it would work: C:\PROGRA~1\putty\pscp.exe -i C:\PROGRA~1\cwRsync\home\rcadmin\.ssh\id_rsa_private.ppk [email protected]:/test.txt C:\temp\test.txt But I want to access any location on my source computer instead of just my user home directory, is there a way to do this?

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• Is this too much to ask for a game programming and developing enthusiast? Am I doing this wrong?

  - by I_Question_Things_Deeply

  I have been a computer-fanatic for almost a decade now. I've always loved and wondered how computers work, even from the purest, lowest hardware level to the very smallest pixel on the screen, and all the software around that. That seems to be my problem though ... as I try to write code (I'm pretty fluent at C++) I always sit there enormous amounts of time in front of a text-editor wondering how every line, statement, datum, function, etc. will correspond to every Assembly and machine instruction performed to do absolutely everything necessary for the kernel to allocate memory to run my compiled program, and all of the other hardware being used as well. For example ... I would write cout << "Before memory changed" << endl; and run the debugger to get the Assembly for this, and then try and reverse disassemble the Assembly to machine code based on my ISA, and then research every .dll, library file, linked library, linking process, linker source code of the program, the make file, the kernel I'm using's steps of processing this compilation, the hardware's part aside from the processor (e.g. video card, sound card, chipset, cache latency, byte-sized registers, calling convention use, DDR3 RAM and disk drive, filesystem functioning and so many other things). Am I going about programming wrong? I mean I feel I should know everything that goes on underneath English syntax on a computer program. But the problem is that the more I research every little thing the less I actually accomplish at all. I can never finish anything because of this mentality, yet I feel compelled to know everything... what should I do?

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• Black Screen after installing recommended Nvidia drivers. What to do?

  - by former_Windows_user

  New to Ubuntu. Problem description: Until recently I had Windows on my computer. My hard disk is divided into two partitions. On the first one (app. 10 GB) I had my Windows XP On the second one (app. 30 GB) I have some data I tried to install Ubuntu 12.04 on the first partition (the smaller one). Since I wanted to keep the data on my second partition, I chose the third install option. During the installation process I deleted the data on partition one, created a new partition with the same size, formatted it as ext4 and mounted / on it. The installation continued fine and at the end I restarted and took the CD out when it ejected automatically (it could have been also before the restart). Ubuntu started but I noticed that my computer was slow. Then a prompt appeared telling me that I did not have the optimal NVidia drivers and recommended to install a specific one. I clicked on the recommended driver, installation went apparently just fine and at the end I had to restart the system again. I did it, Ubuntu started, asked for my password, I typed it, pressed Enter, the screen turned black and remained like that (only the cursor was there and I could move it). I restarted and the same thing happened again. Has anyone had such a problem before and was able to solve it? With Windows I always installed drivers from CDs after installing Windows. Are the same CDs going to work for Ubuntu too or I should find special drivers? P.S. During the installation I was connected to the internet and I agreed on installing updates and the third party software. In the time before I installed that problematic but recommended NVidia driver I checked that there was between 6 and 7 GB free space on the first partition where I installed Ubuntu.

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• Allow access only to one website

  - by Alex

  Hey. I'd like to allow access on a computer connected directly to the internet to one website ONLY. The solution of IE's "Content advisor" or firefox's "FoxFilter" isn't good enough because it actually downloads the data and just don't display it. I want to block the traffic before the requests are sent. How is it possible? Thanks. Edit: OS is windows xp. The browser can be firefox, iexplorer, chrome... It doesn't matter. The computer is connected directly to the modem.

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• Server Setups for Agencies [closed]

  - by styks1987

  We are considering consolidating our server administration by cutting down on the number of systems we currently use to manage all our websites(~65 websites). Currently we have a testing server and 3 production servers. (2 - cherokee(linode), 1 - apache (mt)) We don't have a dedicated server admin, so I am stuck with managing all these servers, and as a developer, I don't want to deal with all the server hassle. So my main goal is to cut down on the time spent messing with the servers. We have looked at Pagoda Box and AppFog as possibilities. I am not sure if Pagoda Box would be cost effective. With 65+ websites we may end up paying anywhere from 0 to $50+ per website per month. Right now we page about $250 per month for the 4 VPS servers mentioned above. We already use Capistrano for deployment. I have the opportunity to completely overhaul the entire setup and I would like some feedback on where you found your information for large scale server management or how you currently do it. Articles are welcome. In summary: What is new (past 2 years) in simple server management arena? If you work at an agency or have had agency experience, how do/did you manage your sites? a. What is the level of effort for SSL, new site setup, database management, and extension management. b. How did you handle datacenter outages. Anyone with Pagoda Box experience, do you like it and did you have problems with Wordpress, Cakephp, Drupal, Expression Engine or Magento? a. Is it expensive for you? b. How has server uptime been? Your direction and comments are greatly appreciated.

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• Windows 8 will only recognize the Blu Ray ROM, if the install disk is present at boot time [migrated]

  - by aceinthehole

  If I have the install disk in the blu ray ROM drive at boot time and subsequently remove the disk and replace it with blu ray media everything functions as I'd expect. However, if I have no media present, or another disk in the drive at boot time, then windows 8 does not seem to recognize that the blu ray player is even present in the computer. It is not present in the 'my computer' screen, device manager does not show the player, and scanning for new hardware yields nothing. It seems that the driver is installed and working as expect, what is it about having the windows 8 install disk in the drive or not that would cause this kind of behavior?

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• Help! Problem dual boot ubuntu windows8 (can't start ubuntu) [duplicate]

  - by a35

  This question already has an answer here: Installing Ubuntu on a Pre-Installed Windows 8 (64-bit) System (UEFI Supported) 5 answers EDIT: I know that there are many topics about dual boot ubuntu windows8, i have read them, my problem is that i cant boot ubuntu neither from HDD nor from live USB. I know about boot repairing, but how can I use it, If i cant boot ubuntu?? I heard about terrible problems with windows 8-linux dual boot, but I really need ubuntu because of school. I read many tutorials how to install ubuntu next to windows8, but despite that a problem accured. Here is what I have done. I have MSI GE60, windows(64bit) is running on mSATA SSD C drive. HDD is divided to two partitions for windows and I left there 50GB for ubuntu. I downloaded ubuntu 12.04.3desktop-amd64(64bit), created bootable USB using Universal USB Installer (recommended on Ubuntu site). I disabled USB legacy support (that Ubuntu could be installed in EFI mode- I was following instructions on Ubuntu site), and also Secure Boot (windows is now angry with me because I turned it off- when I start windows it informs me I should enable that). I inserted USB rebooted computer and chose install ubuntu, divided free 50GB space to swap(2000MB) and rest as ext4 main storage space for ubuntu. Installation passed normally, Ubuntu then asked me to reboot computer. After reboot windows 8 started. Now I can't start ubuntu. When I restart win8 to uefi there is possibility to boot ubuntu, but when I choose it, it crashes. When I choose try ubunfu from connected USB, nothing happend, still dark screed. What is wrong? Can you help me? I am in hurry to do it because of school. Thanks.

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• Change Exchange Server Name Before Upgrade

  - by ffrugone

  I need to upgrade the Exchange Server from 2003 to 2010. I'm physically changing servers as well as software. I'm worried about redirecting the Outlook clients after the upgrade is going to be troublesome. So, I thought that before doing anything else, that I would change the name of the Exchange server on the client from 'server-name.domain.com' to 'mail.domain.com' and add an entry in dns that points 'mail.domain.com' to the same ip as 'server-name.domain.com'. However, even though I added 'mail.domain.com' to the dns, I cannot get the Exchange server to change to that on the client computers. I found out that the Outlook clients check the Global Catalog for the name of the Exchange server computer. My question is: can I change the Global Catalog address of the Exchange computer from 'server-name.domain.com' to 'mail.domain.com'? If so/not, is there a better way to do this? thanks.

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• How does a frame retrieve the recipient's MAC address?

  - by Sarmen B.

  I am studying a Network+ book named All-in-one CompTia Network+ by Mike Meyers. In chapter 2 he talks about frames and how he represents them as canisters and the data within the frame contains the recipients mac address, senders mac address, data, and sequence number. What I don't understand is if the sender is sending a file via the network to the recipient, and this frame contains this data, how does the frame know what the recipients MAC address is before sending it? In regards to TCP/IP when it contains the recipients IP address, that's understandable how it retrieves that value. But I don't understand how it can retrieve the MAC address, because if that frame comes from the senders computer, goes into the router and copies itself to each and every computer that exists on the network, how did it have the MAC address to know where to go? Let me know if I'm not making sense.

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• Received a RAMPAGE IV FORMULA MOBO. Possible CPU Socket problems

  - by Tantan

  I recently received a Rampage IV Formula MOBO in a trade. From everything I read online this seems like a pretty nice piece of hardware. There's one thing I'm worried about though. It appears as though the socket where the CPU goes might have some bent/missing pins. I'm not exactly a computer expert and I wanted to know if this could be any sort of problem. I would post a picture but I apparently don't have enough rep for that... Also, if I did want to move my current rig onto the new MOBO would it even be worth it? MY CURRENT COMPUTER SPECS i3-3220 CPU 8GB DDR3 RAM GeForce GTX460 GPU With a Biostar MOBO!

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• Network(ing) to the Limit

  - by Oracle OpenWorld Blog Team

   By Karen Shamban While Oracle OpenWorld attendees are networking, there's an Oracle Global IT team that builds and maintains the massive networks that help run the show. The objective? To keep things running as seamlessly and smoothly as possible, constantly evaluate priorities, mitigate risk, and be ready for whatever might happen -- because things do happen when there are 50,000 plus attendees, tens of thousands of devices, unexpected requirements, and a constant flow of up-to-the-minute information. Here's just some of what it takes to keep the conference going, network style: 100 Oracle network, voice, and desktop engineers; security, risk management, and other IT experts, who come in from 17 countries  1000+ network switches 300+ miles of copper and fiber 485 wireless access points 2,500 wired laptops 300 VoIP phones And just where are all these networks and devices deployed? This is what the team had to build and manage: Moscone North, South, and West, including: The keynote hall Oracle DEMOgrounds in the Exhibition Halls Hundreds of session rooms Connection Centers, Social Avenue, Lounges Registration The Howard Street Tent and Taylor Street Cafe tented venues Oracle Square (Union Square) Yerba Buena Gardens Masonic Auditorium Sessions and demos at 8 hotel venues That's a whole lot of networking going on. And here's the kicker: the team has only 4 days to bring get it all up and running across these many venues, and exactly 12 hours to take it all down once the show ends. The Global IT team puts in the equivalent of 152 24-hour days for set-up, 227 24-hour days of support during the conferences, and then tears it all down in about 20 24-hour days. And in case you were wondering, the planning for next year's Oracle OpenWorld starts ... next week. No rest for the weary.  Now THAT's networking!  So hats off to the Global IT team -- the job ain't easy, but somebody's got to do it, and they do it remarkably well.

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• Multiple "setups" on windows 7

  - by Roberto

  I would like to create multiple setups on Windows, that is, when I'm working with my computer I have some programs opened, after that I would like to change the setup/user to the "gaming setup" where the previous setup would hibernate and the computer would have all the resources free for me to play. I could have opened multiple tabs on firefox on each setup and they would be there when I come back. I understand that windows' switch user would make the programs run when I'm with the other user and that's not what I want. So, is that possible?

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• Windows 7 - all usb devices go to sleep im idle mode

  - by dvdx

  A strange thing happened after a few updates to the system: Intel rapid storage SSD firmware update Intel Ethernet adapter update GPU Intel update When the computer turns off the screen (after 5 min), an unknown time later, all the USB devices stop working. Sound card Mouse Keybord etc. I can't turn them back on, so I can't wake up the screen or do anything except turn the computer off and back on. I checked my power save profile and all is OK there. I changed in the Device Manager, the Allow USB to sleep in all the hubs. How can I fix this??

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• Skype locking up, and microphone "lagging"

  - by Svendbenno

  Hi. I've always had this problems with skype and pulseaudio on ubuntu. Whenever i start up skype, i have to call someone, then hang up 4-5 times, before the other person can hear my voice. When i, or the other person hang up, skype tends to lock up. I can't kill it with "killall skype" or a logout, so i have to restart my computer. Have anyone else encountered this problem, and if so solved this? I'm using 10.10 btw.

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• Can anyone recommend how to fix sore "sides" from overuse of computers? (some kind of RSI)

  - by MGOwen

  I have to use computers for 9+ hours per day (no suggestions about 'use your computer less!' please). I get various kinds of RSI: a little soreness in the hands and wrists, but that's not a big deal compared my main problem: Pain in the sides of my body, under my arms and down the sides of my torso. Driving worsens it. Exercise doesn't seem to help (maybe I need a special exercise). It could be posture related, but I haven't found a way to fix that. Has anyone else experienced this? I find lots of people complaining about more typical kinds of RSI, but not like mine. I am hoping someone with experience can recommend an exercise, treatment, or adjustment in how I use my computer.

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• How to make Nginx fire 504 immediately is server is not available?

  - by Georgiy Ivankin

  I have Nginx set up as a load balancer with cookie-based stickiness. The logic is: If the cookie is NOT there, use round-robbing to choose a server from cluster. If the cookie is there, go to the server that is associated with the cookie value. Server is then responsible for setting the cookie. What I want to add is this: If the cookie is there, but server is down, fallback to round-robbing step to choose next available server. So actually I have load balancing and want to add failover support on top of it. I have managed to do that with the help of error_page directive, but it doesn't work as I expected it to. The problem: 504 (and the fallback associated with it) fires only after 30s timeout even if the server is not physically available. So what I want Nginx to do is fire a 504 (or any other error, doesn't matter) immediately (I suppose this means: when TCP connection fails). This is the behavior we can see in browsers: if we go directly to server when it is down, browser immediately tells us that it can't connect. Moreover, Nginx seems to be doing this for 502 error: if I intentionally misconfigure my servers, Nginx fires 502 immediately. Configuration (stripped down to basics): http { upstream my_cluster { server 192.168.73.210:1337; server 192.168.73.210:1338; } map $cookie_myCookie $http_sticky_backend { default 0; value1 192.168.73.210:1337; value2 192.168.73.210:1338; } server { listen 8080; location @fallback { proxy_pass http://my_cluster; } location / { error_page 504 = @fallback; # Create a map of choices # see https://gist.github.com/jrom/1760790 set $test HTTP; if ($http_sticky_backend) { set $test "${test}-STICKY"; } if ($test = HTTP-STICKY) { proxy_pass http://$http_sticky_backend$uri?$args; break; } if ($test = HTTP) { proxy_pass http://my_cluster; break; } return 500 "Misconfiguration"; } } } Disclaimer: I am pretty far from systems administration of any kind, so there may be some basics that I miss here. EDIT: I'm interested in solution with standard free version of Nginx, not Nginx Plus. Thanks.

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• Problems with nvidia drivers

  - by Crs2489

  I have a problem that I haven't been able to find a solution to. I recently decided to switch from Windows to Ubuntu 11.10, so I originally installed Ubuntu using the wubi installer for windows. After I installed Ubuntu with wubi I installed drivers for nvidia using the additional drivers from system setting and everything worked fine. I then decided that I no longer wanted windows on my computer because i was having problems with it crashing when I went to remove the partition with windows on it using an Ubuntu Live CD I made I found that there were unrepairable problems with both of my partitions so I decided to delete both partitions and install Ubuntu again from the cd now when I try to install nvidia drivers my gui will not load when i start my computer. I have found people who have had similar problems with the gui not loading after installing nvidia drivers but no one who had there gui working after installing with wubi then not working after installing from a cd. I'm using Ubuntu 11.10 32 I have also tried other versions of linux like openSUSE and have had the same problem with the gui not being able to load after installing nvidia drivers.

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• How to specify the order of startup scripts (CLI)?

  - by bcsteeve

  Startup really confuses me. It seems various methods for starting things happen in different locations all over the place. But is there a way to define the order they are loaded? Specifically... I have an issue where Plex Media Server (PMS) can't be discovered by clients if the server's VPN connection is established prior PMS starting. It was driving me nuts, but I discovered that I could solve the problem by shutting down PMS, shutting down the VPN, turning on PMS and then turning on VPN. I'm not exactly sure how PMS auto-loads itself at startup, but the VPN is something I defined by editing: /etc/network/if-up.d/slickvpn with the following: #! /bin/bash REQUIRED_CONNECTION_NAME="Wired connection 1" VPN_CONNECTION_NAME="myvpn" activ_con=$(nmcli con status | grep "${REQUIRED_CONNECTION_NAME}") activ_vpn=$(nmcli con status | grep "${VPN_CONNECTION_NAME}") if [ "${activ_con}" -a ! "${activ_vpn}" ]; then nmcli con up id "${VPN_CONNECTION_NAME}" fi That's a script I found somewhere (I think on this site) when looking for help autoconnecting a VPN. So I guess /etc/network/if-up.d/ scripts are initiated prior to the PMS service. How can I flip that? Or other solution?

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• how to disable to automatic wireless interface up in ubuntu? [closed]

  - by Surjya Narayana Padhi

  On my laptop I have a built in wireless card and I got one external connected via usb. By ifconfig command I saw both the cards connects to internet and gets IP. eth1 - the interface my laptop has in-built wlan1 - I have connected externally via usb. Now I applied "sudo ifconfig eth1 down" so that i can use only wlan1. But this eth1 goes down for sometime and then come up again automatically. So I am not able to test my externally usb connected wifi adapter. Can anyone suggest me way to disable eth1 interface?

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• Boot failure on Ubuntu 11.04

  - by B Seven

  I was using my laptop with Ubuntu without problem for a few months. I did not update any software or install any OS updates. This morning when it started, I got error: no such device:.... error: no such disk error: you need to load the kernel first. Press any key to continue... Then takes me back to GRUB menu. Both Ubuntu option and recovery mode option show the same thing (above). What does this mean? How do I fix it? Since I did not install anything new, does it mean the SSD is dying (again)? How to check the SSD to and fix any file system errors? Ubuntu 11.04 EDIT: Just remembered something: when the system was shutting down, it did not turn off. There were a bunch of weird output statements, and I assumed the system had shut down so I turned it off with the power button. Perhaps something got corrupted because of that.

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• Neither suspend nor hibernate in 12.10 lubuntu - is there a workaround by scripts?

  - by J.-S. Farinet

  I've neither suspend to ram nor to disk in 12.10 lubuntu (i suspect there might be a kernel issue but i'm only a simple user). Also, the xfce powermanagement which comes with lubuntu by default does not have any effect. Even it doesn't lock the screen when i set this in the preferences: What do when close the lid. So, on a portable that's annoying a lot. Is there some way to workaround by scripts in 'etc/pm/*.d'? TIA for any idea.

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• Ubuntu 12.04 edit grub

  - by J. R. Crocker

  I just install Ubuntu 12.04. I want to change the boot order of grub. Previous versions of grub.cfg I was able to change the permissions and the do a gedit. After reloading 12.04, I was able to change permissions for grub.cfg, but gedit will not let me save it. I am a little irritated that Ubuntu is suppose to be open source. However someone has chosen to lock one out of a file. I do realize that some people have no business doing a edit on grub. I am a long time user of Unix and Linix.

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• Can't use a network CD-ROM

  - by user53814

  Hi, there! I have a computer with Windows XP and I'm trying to use my local network to use the CD-ROM of my notebook with Windows 7. In windows XP computer with VLC I can open the menu of the DVD but after choose the option for the first chapter the movie window shuts down (but the VLC stays open). With BS-Player when trying to start the first chapter it freezes... Is this possible to fix? Thanks in advance!

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• How can I make windows not mount a drive when it is plugged in?

  - by heavyd

  Due to my employer's IT policy, I'm not allowed to have any kind of MP3 playing software on my computer. I do however like to plug my iPod into my computer to keep the battery charged during working hours. Normally, I plug the iPod in, Windows mounts the drive, then I have to go in and eject the drive so I can run my iPod normally while still keeping it charged. Is there anyway I can keep Windows from mounting the drive (and this drive only, I still use my USB flash drive a lot) from auto-mounting? Update: Maybe this is more of an iPod issue, but specifically I would like for the iPod to not display the "Do not disconnect" message when plugged in.

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