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  • algorithm for Virtual Machine(VM) Consolidation in Cloud

    - by devansh dalal
    PROBLEM: We have N physical machines(PMs) each with ram Ri, cpu Ci and a set of currently scheduled VMs each with ram requirement ri and ci respectively Moving(Migrating) any VM from one PM to other has a cost associated which depends on its ram ri. A PM with no VMs is shut down to save power. Our target is to minimize the weighted sum of (N,migration cost) by migrating some VMs i.e. minimize the number of working PMs as well as not to degrade the service level due to excessive migrations. My Approach: Brute Force approach is choosing the minimum loaded PM and try to fit its VMs to other PMs by First Fit Decreasing algorithm or we can select the victim PMs and target PMs based on their loading level and shut down victims if possible by moving their VMs to targets. I tried this Greedy approach on the Data of Baadal(IIT-D cloud) but It isn't giving promising results. I have also tried to study the Ant colony optimization for dynamic VM consolidating but was unable to understand very much. I used the links. http://dumas.ccsd.cnrs.fr/docs/00/72/52/15/PDF/Esnault.pdf http://hal.archives-ouvertes.fr/docs/00/72/38/56/PDF/RR-8032.pdf Would anyone please explain the solution or suggest any new approach for better performance soon. Thanks in advance.

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  • Virtual Hard Drive not booting - VMWare

    - by Chloraphil
    I have a .vmdk (VMWare hard disk) file that I cannot use as the lone disk in a new virtual machine. If I attach it to an existing virtual machine then it works fine. It has Windows Server 2003 on it. When I attempt to boot the new VM it attempts a network boot. EDIT: VMWare Workstation 6.5 I could not find a PXE option in the settings, and I did look in the VM config file for "PXE" but did not find one.

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  • Ruby installed on Ubuntu 10.10 slow on one machine but not other

    - by Aaron Jensen
    I have a machine that was provisioned several months ago. RVM was used to install ruby 1.9.3-p125 as well as 1.9.3-p125-perf. When I compared raw ruby performance to another identical machine the older machine smoked them. For example: ================================================================================ With in-block needle calculation ================================================================================ Rehearsal ---------------------------------------------- detect 3.790000 0.000000 3.790000 ( 3.800895) each 2.410000 0.000000 2.410000 ( 2.420860) any 3.960000 0.000000 3.960000 ( 3.972099) include 1.440000 0.000000 1.440000 ( 1.442862) ------------------------------------ total: 11.600000sec vs ================================================================================ With in-block needle calculation ================================================================================ Rehearsal ---------------------------------------------- detect 10.740000 0.000000 10.740000 ( 10.769366) each 6.080000 0.010000 6.090000 ( 6.106323) any 10.600000 0.000000 10.600000 ( 10.641606) include 4.160000 0.000000 4.160000 ( 4.171530) ------------------------------------ total: 31.590000sec I attempted to reinstall 1.9.3-p125 with rvm on the fast machine and that ruby is now slow. It's as if something changed in RVM, or I installed some package that made compiled versions of ruby perform significantly worse. I know this is a tough question to answer, but what things should I look into in order to track down why the performance has suffered so much? edit I just attempted to install with ruby-build and the version installed was fast. Something rvm is doing to build it in my environment is slow.

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  • vmWare virtual image compatibility

    - by luca
    If I create a vmware virtual image on my mac (with vmware Fusion 2) it creates a file line "Ubuntu.vmwarevm" My question (which I couldn't get answered by vmware Support..) is: Will this file be compatible with a ESXi 4.0 server? In general, virtual machine for vmware are all the same format? thanks

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  • How to change physical path of virtual directory in IIS7

    - by Tomek
    When you have multiple websites and each of them maps the same physical path as virtual directory, how to quickly change the physical path of that virtual directory for all websites? Note: I don't want to do use IIS Manager. I tried changing the path (find and replace) in %SYSTEM%\system32\inetsrv\config\applicationHost.config, then restarted IIS, but the change hasn't taken effect. What am I missing?

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  • Trying to setup virtual hosts on unix PHP on nginx

    - by user1634653
    I have tried to install php5-fpm and Nginx on Ubuntu machine, but I got a problem. When I have only one virtual host on a unix port it is all fine but when I try to add another virtual host Nginx goes to default web page "Welcome to Nginx!" but when I run it on a tcp port example port 9000 it work fine with multisites. It is a fresh install of ubuntu 11.10, Nginx 1.2.3 with php5-fpm installed. It also has extra php installs such as php-apc. I can only give the links to the virtual hosts because I am doing it from a mobile phone. Here are the links for the two virtual hosts I am using: http://ic0nic.co.uk/ic0nic.txt, http://ic0nic.co.uk/sourproxy.txt also I want to use unix port because I find it a whole lot faster. Edit: Here are the nginx configs server { server_name ic0nic.co.uk www.ic0nic.co.uk; root /var/www/ic0nic.co.uk; listen 8080; index index.html index.htm index.php; include conf.d/drop; location / { try_files $uri $uri/ /index.php?q=$uri&$args; } location ~ \.php$ { fastcgi_buffers 8 256k; fastcgi_buffer_size 128k; fastcgi_intercept_errors on; include fastcgi_params; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; fastcgi_pass unix:/dev/shm/php-fpm-www.sock; root /var/www/ic0nic.co.uk; } } server { server_name sourproxy.co.uk www.sourproxy.co.uk; root /var/www/sourproxy.co.uk/; listen 8080; index index.html index.htm index.php; include conf.d/drop; location / { try_files $uri $uri/ /index.php?q=$uri&$args; } location ~ \.php$ { fastcgi_buffers 8 256k; fastcgi_buffer_size 128k; fastcgi_intercept_errors on; include fastcgi_params; fastcgi_param SCRIPT_FILENAME /var/www/sourproxy.co.uk$fastcgi_script_name; fastcgi_pass unix:/dev/shm/php-fpm-www.sock; } }

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  • Getting wireless to work on Ubuntu 11.10 (on a mac machine)

    - by yayu
    I have a 2008 white 13.3 inch macbook that now solely runs ubuntu. However, I cannot get wifi or cable to work on it. Regarding the cable, it atleast tries to connect but eventually disconnects from the wired network. Here is the output for lspci (pastebin) I tried installing b43-fwcutter and firmware-b43 but get errors. (I loaded them from a thumb drive and tried sudo dpkg -i). I cannot understand these instructions from the documentation, as I cannot locate the pool directory. b43-fwcutter is located on the Ubuntu install media under ../pool/main/b/b43-fwcutter/ and patch is located under ../pool/main/p/patch/ or both in the official repositories online. Note: In some versions (10.04 and 11.04 at least) there is not a /pool/main/p/patch/ If this file is missing then you don't need it. In this case you only need to install /pool/main/b/b43-fwcutter by following the instructions below.

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  • How can I access user files on a disk moved from a Windows 7 machine to an XP machine?

    - by Fantius
    I moved the hard drive from one machine (Win 7) to another (XP) and now certain folders tell me "Access denied". I am logged in as an administrator. I had a different account on the other machine. Neither account authenticated to anything besides the local machine. The old machine is apparently dead, so I can't do anything in there like change permissions, etc. How can I access these files? Edit: After changing the ownerships of all the files and folders on the drive, I am getting a different error. And it is troubling me deeply. "xxx refers to a location that is unavailable. It could be on a hard drive on this computer, or on a network. Check to make sure that the disk is properly inserted, or that you are connected to the Internet or your network, and then try again. If it still cannot be located, the information might have been moved to a different location." No change after rebooting. Any ideas? Surely the files are still there, right?

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  • VPN sharing on Mac OS X 10.5 machine

    - by Jens
    I have a rather weird problem. I want to share a VPN connection that has been established by my Mac OS X 10.5 computer with another machine in my network. This is what I did: In the /etc/hostcongig file on the main computer I added the line: IPFORWARDING=-YES- I assigned a fixed IP address to my computer (192.168.178.30), a fixed one to the other machine (192.168.178.60) and my computer's IP address as gateway on the other machine. I connected to my VPN using the internal Mac OS X VPN client (PPTP connection) I run this script: #!/bin/sh natd -same_ports -use_sockets -unregistered_only -dynamic -interface ppp0 -clamp_mss ipfw -f flush ipfw add divert natd ip from any to any via ppp0 ipfw add pass all from any to any sysctl -w net.inet.ip.forwarding=1 Source: Using (and sharing) a VPN connection on your Mac Now everthing works smootly, however speed is an issue. I get 1,8 MBit/s on my main machine and only 0,3 - 0,6 MBit/s on the other one. My question: What could possibly be wrong? Do I have to tweak MTU settings, is there any packet inspection ongoing that needs time....? Any help appreciated!

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  • Virtual hosting

    - by H3llGhost
    Hello, I want to use domains like xxx.abc.domain.tld. The xxx is my folder to access. I tried it with the rewrite rules, but I can't get it working, because I don't know how to get the part xxx from the SERVER_NAME into my RewriteRule. This was my try: UseCanonicalName Off # include the IP address in the logs so they may be split LogFormat "%A %h %l %u %t \"%r\" %s %b" vcommon CustomLog /var/log/apache2/vaccess.log vcommon RewriteEngine On # a ServerName derived from a Host: header may be any case at all RewriteMap lowercase int:tolower ## deal with normal documents first: # do the magic RewriteCond ${lowercase:%{SERVER_NAME}} ^.+\.abc\.domain\.tld$ RewriteRule ^(.*)$ /var/www/abc.domain.tld/[xxx-part]/$1 [L] Perhaps there is a better solution. In generally I want to create a dynamic login system with mod_auth_mysql and for each xxx is a seperate user database. I would prefer the domain/address syntax abc.domain.tld/xxx, but I don't know how to realize it. Thanks for any advices.

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  • Partners - There's a Virtual Seat Awaiting You

    - by Get_Specialized!
    That's right; no need to book travel, wait in airport lines or deal with expenses afterwards! Leave the luggage at home and just log on. Attend the LIVE Oracle FY13 PartnerNetwork Kickoff June 26th/27th. from your own location. Why wait, it just takes a moment to register for your region: NAS  - Tuesday, June 26 @ 8:30 am PT  EMEA - Tuesday, June 26 @ 2:00 pm BST LAD - Tuesday, June 26 @ 2:00pm EDT (Miami) / 3:00pm BRT (Sao Paulo) Japan - Wednesday, June 27 @ 10:00 am JST APAC - Wednesday, June 27 @ 8:30 am IST (Bangalore) / 11:00 am SGT (Singapore), 1:00 pm AEST (Sydney) Your further invited to interact in the conversation and bring forth questions to the Oracle PartnerNetwork on Twitter

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  • Installing multiple ubuntu partitions on same machine without corrupting GRUB

    - by LGB
    I had only ubuntu installed on my pc, but I felt like adding another ubuntu (same version) partition so I could have one just for work/study and another one just for personal generic use. I installed it and it worked out okay, but I found I needed more space on the new created Ubuntu partition, so I booted up from the Live CD, and used GParted to move/shrink/grow the partitions as the Ubuntu's tutorials suggested it was pretty straightforward. But in doing all this I messed up with Grub, so when I start my system it shows: error: unknow filesystem grub rescue What would be the easiest way to recover it so I could have both partitions working? Btw, it wouldn't be a problem for me to lose the partitions if it's the shortest/easiest way. Thanks in advance.

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  • IIS 6 nested virtual directory redirection

    - by threedaysatsea
    We're running IIS 6 on a WinServer2k3 box and we're having some trouble with the following problem: E-mails were sent out to users asking them to go to the following URL: alias.contoso.com/directory2/view.aspx?queryparam1=no&queryparam2=blue However, the URLS are actually supposed to be: server.contoso.com/directory2/view.aspx?queryparam1=no&queryparam2=blue It's too late to recall all of the e-mails, and we'd like to redirect traffic to make this as seamless as possible for our users. The real problem here is that the server (server.contoso.com) is hosting the alias (alias.contoso.com) as a redirect thusly, and the existing redirect we need to keep functional: Default Web Site (server.contoso.com) --Directory1 --Directory2 --Directory3 Redirection to Directory3 (alias.contoso.com) --Essentially alias.contoso.com will take the user to server.contoso.com/Directory3 Is there any way to host a separate redirect inside of the existing redirect? We need to keep alias.contoso.com taking the user to server.contoso.com/Directory3 but also make alias.contoso.com/directory2/view.aspx?queryparam1=no&queryparam2=blue point to server.contoso.com/directory2/view.aspx?queryparam1=no&queryparam2=blue Any tips? Is this even possible?

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  • How to create a temporary staging server on my home machine [closed]

    - by Homunculus Reticulli
    Possible Duplicate: What things required to host a website at home I want to create a temporary staging server which can be accessed (i.e. via browser) by other people that I want to show the website to (a business partner who is half way accross the world). IIRC, my ISP issues dynamic addresses so I may need to register with a (DNS server?) - not sure about this. Although I'm a software developer, I don't know much about the hardware side of things - and would appreciate help in getting me setup so I can show a website to a business partner. Here are the relevant details: Web server: Apache 2.2 OS: Ubuntu 10.0.4 LTS modem/router: ZyXel P-600

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  • Glassfish Virtual Servers with Different Contents

    - by Nikael Vergara
    I have been searching google for hours trying to find out whether different virtual servers in glassfish 3.1 could contain different contents. For example there are two virtual servers named VS1 and VS2. I added a sample application on VS1. Is the sample application I added on VS1 can be edited or seen on the admin console of VS2? In this feature possible in glassfish? Any help will be appreciated.

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  • Efficient algorithm for Virtual Machine(VM) Consolidation in Cloud

    - by devansh dalal
    PROBLEM: We have N physical machines(PMs) each with ram Ri, cpu Ci and a set of currently scheduled VMs each with ram requirement ri and ci respectively Moving(Migrating) any VM from one PM to other has a cost associated which depends on its ram ri. A PM with no VMs is shut down to save power. Our target is to minimize the weighted sum of (N,migration cost) by migrating some VMs i.e. minimize the number of working PMs as well as not to degrade the service level due to excessive migrations. My Approach: Brute Force approach is choosing the minimum loaded PM and try to fit its VMs to other PMs by First Fit Decreasing algorithm or we can select the victim PMs and target PMs based on their loading level and shut down victims if possible by moving their VMs to targets. I tried this Greedy approach on the Data of Baadal(IIT-D cloud) but It isn't giving promising results. I have also tried to study the Ant colony optimization for dynamic VM consolidating but was unable to understand very much. I used the links. http://dumas.ccsd.cnrs.fr/docs/00/72/52/15/PDF/Esnault.pdf http://hal.archives-ouvertes.fr/docs/00/72/38/56/PDF/RR-8032.pdf Would anyone please clarify the solution or suggest any new approach/resources for better performance. I am basically searching for the algorithms not the physical optimizations and I also know that many commercial organizations have provided these solution but I just wanted to know more the underlying algorithms. Thanks in advance.

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  • CVE-2011-5035 Denial of service (DoS) vulnerability in Oracle Virtual Desktop Infrastructure (VDI)

    - by RitwikGhoshal
    CVE DescriptionCVSSv2 Base ScoreComponentProduct and Resolution CVE-2011-5035 Denial of service (DoS) vulnerability 5.0 Apache Tomcat VDI 3.3 Linux Solaris VDI 3.2 Solaris This notification describes vulnerabilities fixed in third-party components that are included in Oracle's product distributions.Information about vulnerabilities affecting Oracle products can be found on Oracle Critical Patch Updates and Security Alerts page.

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  • Menu to let me choose OS to run in a dual boot machine

    - by user1145905
    I recently re-imaged my Dell PC to dual-install Windows 7 and Ubuntu 12.04.1 LTS. The dual-boot was a success, since I was able to start whichever OS I wanted. Now, I installed some software (the OpenJDK package) on the Ubuntu side of the PC. Upon restarting Ubuntu, I unfortunately lost the ability to choose the OS that I wanted to run (i.e., Ubuntu). Ordinarily, I'd expect to: 1. Hit the power button 2. A menu (Grub?) shows up listing all OSs installed in the PC (namely, Win7 and Ubuntu) 3. Choose which OS I want and hit enter. bingo. The problem is that I don't see that menu (step 2 above). Instead, windows automatically starts, even when I hit F12 to see the boot options, none of which I understand. Your help would be great! Thanks! - Kiptoo

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