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• What's better for deploying a website + DB on EC2: 2 small VM or a large one?

  - by devguy

  I'm planning the deployment of a mid-sized website with a SQL Server Standard DB. I've chosen Amazon EC2 to deploy it. I now have to choose between these 2 options: 1) get 2 small instances (1 core each, 1.7 GB of ram each): one for the IIS front-end, one for running the DB. Note: these "small instances" can only run the 32-bit version of Win2008 Server 2) a single large instance (4 cores, 7.5 gb of ram) where I'd install both IIS and the SQL Server. Note: this large instance can only run the 64-bit version of Win2008 Server What's better in terms on performance, scalability, ease of management (launch up a new instance while I backup the principal instance) etc. All suggestions and points of view are welcome!

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• After moving our Servers to a virtual environment using VMware - SQL timeouts came in, why?

  - by RayofCommand

  We moved our servers to a virtual cloud (VMware) where only our servers are in. But as soon as we finished migrating everything we are fighting against SQL Timeouts and machine slowdowns we can't explain. Even though we ~ doubled the servers capacity while switching from physical to virtual. Now I googled and found that we are not alone. People are complaining about poor performance after moving to a cloud managed by VMware. Are there any known issues? Sometimes our services can't access a disk or SQL receives a timeout and we have no idea why.

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• openVAS - Microsoft RDP Server Private Key Information Disclosure Vulnerability - false Alarm?

  - by huebkov

  I performed a openVAS scan on a Windows Server 2008 R2 and got a report for a high threat level vulnerability called Microsoft RDP Server Private Key Information Disclosure Vulnerability. An remote attacker could perform a man-in-the-middle attack to gain access to a RDP session. Affected Software is Microsoft RDP 5.2 and below. My server uses RDP 7.1, is this alarm a false alarm? Security Advisor Pages say: Solution Status Unpatched, No remedy... References http://secunia.com/advisories/15605/ http://xforce.iss.net/xforce/xfdb/21954/ http://www.oxid.it/downloads/rdp-gbu.pdf CVE: CVE-2005-1794 BID:13818

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• Home router for higher network loads

  - by Zizzencs

  I'm trying to find a replacement for my ASUS WL500GP router. Some constraints: my ISP now provides 120 Mbit bandwidth - the router must be able to handle it I have 3 computers and a laptop at home - the router must have at least 4 LAN ports and the WAN port I need to be able to do the following in parallel: use bittorrent with ~1000 connections transfer files from one home computer to another at high speed access one home computer from my workplace I don't really need wireless I don't really want two boxes to serve all these purposes. So I was searching for a router with 1 Gbit ports, jumbo frame support and good reviews, but haven't really found a promising candidate so far. Any suggestions?

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• VirtualBox: Ubuntu installed in Windows 7 OR Windows 7 installed in Ubuntu

  - by user584968

  The title of the post sums up my questions: Is performance better, on average, assuming Ubuntu and Windows are used equally and for the same purposes, when Ubuntu is installed inside of Windows 7 or when Windows 7 is installed inside of Ubuntu using VirtualBox? My gut instinct tells me that because Ubuntu drivers are mostly open source, optimizations could be made when translating the virtual system calls of Ubuntu through Windows 7 that could not be made if it were flipped the other way around, because of the closed nature of Windows drivers. However, this is just a guess, and I have no evidence to back this up. I'm not sure, so I thought it would be best if I opened up this question to the experts of the community. I look forward to reading your responses!

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• Drobo Pro or SAN for backups

  - by PHLiGHT

  I have multiple offices and was thinking of using two Drobo Pros as a storage location for my backups, with one at each site being synced. It seems like on the surface its a cheap alternative to a SAN. Because it will just be used for storing backups I don't think that performance is as big of an issue. Related question. How do you sync your backups from your main location to a remote site. I am using Backup Exec and wondered if I should use a feature in the program or use something like Delta Copy.

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• How do I move an Amazon micro instance to a small instance?

  - by Navetz

  I want to move my instance to a micro instance to a small instance but when I try to launch a new AMI based on my Micro instance AMI it only gives me the option for 64 bit instances. My initial ami is based off an ubuntu 10.04 image. Is it not possible to move between 64 bit and 32 bit instance? Would it be possible to use a load balancer to have a 32bit instance and a 64bit instance work together? I have a website/web app that I will be uploading huge volumes of data to. I will be starting with 65gigs of images and then moving up to 100+ gigs of images. I am not sure which instance type would be best for this. I was going to use a load balancer and auto scaling to increase the number of instance when the load is high. Also when using a load balancer, does one of the AMI instance become the primary image and the rest act as clones of it?

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• Sharing RAM resources between 2 or more computers

  - by davee44

  I know there was a somewhat similar question before: How to share CPU or RAM? But, let me just specify it a little more... When Microsoft Windows requires more RAM capacity than available it uses a swap-file to temporarily store the data there, this is actually something like a hard-drive-based RAM. This technology is used for many years. Theoretically, it shouldn't be too hard to implement a similar technology that uses the RAM of different computer(s) in the network for temporary data storage. This just requires a software that runs on computers in the network that accepts and returns data from/to the main computer and keep that data in the RAM; plus the operation system of the main computer must have the ability to use computers in the network instead of (or in addition to) the swap-file. I wonder, are there any implementations of this idea? This would allow users to build RAM clusters using all of their home or office computers, that will boost the performance of a single computer for some development/gaming/video tasks, etc.

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• KVM guest storage difference with NBD and NFS

  - by WojonsTech

  I am setting up my own little private cloud for my own use maybe for a project or to. I am using linux kvm on debian 6. I have 3 servers 2 of them for compute nodes and 1 storage node. I would I have already installed kvm made a few test machines got my networking setup. I have 2 nics on each server 1 nic is for web traffic other nic is for network traffic. My first Idea was to use NFS for storing the guest machines which can range in size, maybe 8gb maybe 100gb, it just depends. I was doing have heard of nbd before seems like it could work but I dont know what the performance differences are and if it will effect my enviroment, nfs looks like it will be easier to use.

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• XDMCP is slow any ideas? (looking for alternative remote desktops)

  - by peteri

  I've been used to using RDP on Windows to remote to machines, and I've got an asus eee 701 which I want to use to do some *nix programming on. While the eee is a lovely little machine the screen and keyboard are a little small to use for lots of programming. I've tried using Xming (the free version) to remote login into the eee from my desktop using XDMCP (or even using a ssh session as a straight X11 server and no desktop on the eee) the whole thing seems seriously slow over wifi the initial desktop takes at least 5 seconds to paint (might even be 10 seconds I haven't actually timed it). So my real question is what do other folks use for remote control with a GUI for their *nix boxes? I am finding it hard to believe the performance is so bad over a wifi network (It makes the Mac IIs I used to use a college in 1988 seem fast) or is this just a problem with Xming and using say the Cygwin X11 server would be better.

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• Building a workstation computer for Image processing? [closed]

  - by echolab

  I am taking a gigapixel image my goal is 50gigapixel and shooting is almost done , i am doing some research to build a workstation so i can stitch images together , my questions is ! Could u suggest some dual cpu mainboard that works fine with xeon 5500+ , with 64GB+ ram support ? My other question is which hardware is most important in image processing , all i see in story of gigapixel panoramas is they have dual xeon and 32gb+ ram ? i wonder if i am doing this right , i mean they don't post information on graphic card , mainboard and stuff ! I did asked several websites , but nothing best answer was get some high-end workstation and plenty of hours , i don't want to purchase ready to use workstations, i wanna build it up Thanks in advance

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• How can I use the Band Pass Filter in GarageBand?

  - by Another Registered User

  What I want to do: I have a music WAV file and want to put a Band Pass Filter over it, to filter out anoying high frequencies. I was reading on the net that there is a "AuBandPass" plugin in Mac OS X. I just can't figure out how I could use that in GarageBand. I don't even find the effects at all. I created a new GarageBand file and dropped the WAV file in there. Now I can play that song in GarageBand. What must I do next?

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• Is there other usage of Comcast extension cable and splitter?

  - by Tim

  I have an unused Comcast high-speed internet self-install kit from 2006. It has two coils of extension cable, and a splitter, and some screws. The name of the cable is "extension cable" printed on the package. I wonder if that is its actual name? As ethernet cables are always useful, I wonder if the extension cables are totally worthless and should be tossed into a trash can? Or are they usable for some other purposes, or even sellable? Thanks! SVI Digital SV-2G Splitter (5/1000MHz): One interface of the cables: Screws

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• Solaris 10: Identify a PID and the CPU it's running on

  - by Marcus

  I have multiple instances of a database running on a Solaris system. I'd like to prove that each database process is being handled by a different CPU. Essentially, I want to be able to do something like a ps -ef | grep <process_name> to get the PIDs and then run another command (if required) to identify the CPU... Is prstat able to do this? I'm making an assumption that as each database instance is started each one uses a different CPU. I'm not sure if I'm understanding this correctly... The reason I want to do this is because Sun hardware has slow CPU's, but lots of them. Therefore, to get the best performance out of it, I need to try and spread the load among CPU's... Thanks

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• Solaris 10: Identify a PID and the CPU it's running on

  - by Marcus

  I have multiple instances of a database running on a Solaris system. I'd like to prove that each database process is being handled by a different CPU. Essentially, I want to be able to do something like a ps -ef | grep <process_name> to get the PIDs and then run another command (if required) to identify the CPU... Is prstat able to do this? I'm making an assumption that as each database instance is started each one uses a different CPU. I'm not sure if I'm understanding this correctly... The reason I want to do this is because Sun hardware has slow CPU's, but lots of them. Therefore, to get the best performance out of it, I need to try and spread the load among CPU's... Thanks

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• Auto restart server if virtual memory is too low

  - by Sukhjinder Singh

  There are quite number of software running on my server: httpd, varnish, mysql, memcache, java.. Each of them is using a part of the virtual memory and varnish was configured to be allocated 3GB of memory to run. Due to high traffic load which is 100K, our server ran out of memory and oom-killer is invoked. We've to reboot the server. We have 8GB of Virtual Memory and due to some reason we cannot extend to larger memory. My question is - Is there any automated script, which will monitor how much virtual memory left and based upon certain criteria, lets say if 500MB left than restart the server automatically? I do know this is not the proper solution but we have to do it, otherwise we don't know when server will get OOM and by the time we know and restart the server, we lost our visiting users.

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• Straight-forward to Virtualise with XEN or KVM on IBM Server System x3650 M4 791562G?

  - by ChrisZZ

  I want to built a virtualised Server Environment using XEN or KVM. The virtual machines should be purely debian systems - so XEN or KVM should be a sane choice. Now while buying servers, I am confronted with the fact, that the vendors obviously only support commercial solution. I think, on a good server, one should be able to install uncommercial software as well - but of course sometimes systems have hardware, that requires drivers, that are not found in the OS Community. So I am asked the question: Is it straight-forward to use Debian with IBM Server System x3650 M4 791562G with Debian - or even virtualising the IBM Server System x3650 M4 791562G using XEN or KVM. I am sure there will always be a way to achieve this goal - but this way might have a high milage - so I am not asking, whether this is theoretical possible, but whether this should be straight-forward and practically easy to do, no major headaches to be expected.

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• large RAID 10 vs small RAID1

  - by user116399

  The machine will store and serve millions of small files (<15Kb each), and all those files require a total storage space of 400G Considering the exact same SATA hard drives maker and models, on the exact same environment (OS, cpu, ram, raid controller, etc...) which one of the setups bellow would be faster? A) RAID 1 with 2 drives of 2T each, making up total storage of 2T B) RAID 10 with 4 drives of 2T each, making up total storage of 4T [EDIT]: I'm aware RAID10 is faster than RAID1. The larger the disk, at least in theory, the longer will take to do seeks/writes. So, will the performance gain of RAID10 will be outweighed by the "drag" caused the larger disk area when seek/write operations happened?

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• How to increase the volume gain when viewing online flash video?

  - by Nick000

  When watching online Flash videos on Youtube, Dailymotion, etc... sometimes the videos are recorded at low volume. The thing is that, I have a HP Notebook with good enough audio volume, but when I watch these "low volume" videos the sound level is really low, even when I have the volume at 100%. So I am looking for a way to increase the volume gain (like VLC player where you can increase it to 200%), BUT while watching it live on Youtube... that is, I don't want to download the video on my PC. Is there a software that can do that? Maybe an advanced flash video player that integrates to browser? or some other software to increase the volume gain overall on my laptop? My Specs: HP Pavilion Notebook, Audio: IDT High Definition Audio CODEC (integrated), Vista 64-bit, 4 GB RAM, etc.....

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• What maintenance is required for a Postfix setup?

  - by JonLim

  I've taken a look at the setup and configuration process for a Postfix server, planning to use it for just sending emails out from my server. So far, I have these steps: Setup Postfix Configure Postfix Install DKIM Set SPF records Tune for performance Debug Seems rather straightforward. However, I was just wondering: are there any actions I should be taking for periodic maintenance of my Postfix setup? Thanks! EDIT: Also, just curious, how long would this entire setup ideally take? 30 - 60 minutes? More?

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• How to disable screens turn off Windows 8.1

  - by Warpzit

  So recently my computer started turning my screen monitors off after a while without activity, if I move the mouse or hit the keyboard they turn back on. I just want them to stay on. My System is windows 8.1 64 bit, I have 2 screens with mini display port and 1 television with hdmi which often is in regular television mode when this issue happens. Now before you jump to conclusions this is what I've tryed: Disabled screen saver Power saving settings to high with following set: Turn of the display: Never Put the computer to sleep: Never Turn off hard disk after: Settings: Never Sleep: Sleep after: Settings: Never Display: Turn off display after: Settings: Never Display: Enable adaptive brightness: Settings: Off Multimedia settings: When sharing media: Settings: Prevent idling to sleep. Any pointers that get me in the right direction will be greatly appreciated.

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• How to measure that a host is good for users in Egypt ?

  - by Sherif Buzz

  Hi all, I currently have a site that's hosted in Texas. The majority of my users are from Egypt and I'm a bit concerned that the current hosting is not the optimal in terms of performance. The site is not slow but for how can I know if, for example, hosting it in Europe or Asia is better ? To clarify I need to know there is a way that I can test different hosting options - for example how can I test the average response time between Egypt and a host in Texas, the average response time between Egypt and a host in the UK ?

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• Good bitmap fonts with big sizes and unicode support

  - by bitonic

  I really like bitmap fonts for programming/terminal. As far as I know there are two bitmap fonts with good unicode support: Unifont Fixed The problem is that I have a really high resolution screen, and they're both too small. Fixed does include a large size (10x20) but it looks really bad (it's basically always bold, and bold is a different face). Are there any other bitmap fonts with unicode support and large sizes? Terminus is the only font with a decent size but it doesn't have good unicode support. Having good coverage for mathematical symbols would be enough, since that's what I need.

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• Hardware changes to require XP Activation ? (for a Virtual Machine)

  - by NVRAM

  I have WXP-64 running on a VM and, for testing and performance reasons, I would like to occasionally change the allocations for it. Changes might include: Number of CPU cores, Amount of RAM Add/remove network adapters. But I'm concerned that XP will demand re-activation and that I might eventually have licensing issues if I do this. So, can anyone tell me: What kind of changes trigger re-activation in XP? Is there limits or caveat with regard to re-activation? I've perused this question and the article it references, but wanted more recent and verified info. (FWIW, I'm not trying to cheat: the OS copy was purchased explicitly for the VM.)

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• virtual machines: optimal host os to run Windows XP guest os?

  - by user61132

  My department doesn't have the budget to upgrade my ailing Dell D620 laptop. However, I do have the option to buy my own personal computer, then use my company-issued ISO image to run Windows XP as my guest os using virtualbox or vmware. Therefore, last month, I bought an Acer AX3910-U3012 desktop that had Windows 7 as the host os (and 8G RAM). In short, I was disappointed with the performance while trying to run WinXP as the guest os. (It didn't perform much better than my laptop.) Just wondering what the optimal host os would be for running Windows XP as the guest os? (No, I can't use my company-issued ISO image to build the os for my personal computer.) FWIW, I'm willing to spend up to $2k if it's REALLY worth it, but would prefer to spend no more than $1k. Also, in an effort to cut costs, I'd prefer buy a desktop instead of a laptop. Thanks for any/all feedback.

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