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• My Graphics Card isn't working Properly

  - by Dan

  I have just upgraded from a Sapphire AMD 6670 2gb Graphics card to a Nvidia GTX 650 ti 2gb SSC and my Windows Experiance index has gone from 6.8 to 7.7 but when playing games i am seeing no improvements i cannot play saints row three on even the lowest settings but according to many people and benchmarks on the web i should be able to play it comfortably. I want to know why this is happening to me..... I have installed the latest drivers and i have direct 10 + 11 installed I am 15 and it's my birthday today as i got it as a present but its not doing what i want also in am using a dvi cable not hdmi because i need a new one and its in the post. Is it possible that using dvi will affect performance

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• Linux servers vs Windows IIS sense of usage "free" solutions

  - by Rob

  I wonder what is the sense of using "free" open source solutions for serious webstie applications? Crawled and read many testing of servers performance and there is one conclusion: IIS seems to be the best choice for high load applicatiom. I mean cost effective. Especially this concers to Nginx PLUS and LiteSpeed Users where subscriptions paid for e.g. LoadBalacer and extra support cost a lot in fact. I'm asking then where it's "free" then or "cheap" in this case? Assuming even little higher cost of dedicated servers with Windows still seems like Windows looks cheaper. At it's basic setup Windows 2012 with IIS offer much more than std LAMP, or other NGINX config.... Maybe am I missing sth ? I mean only general case for someone who did not already started his app. I know exactly that the cheapest solution is the one someone is skilled. Has anyone done already such real costs calculation for example scenarios?

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• SMTP IP - Bad reputation, how do I work around?

  - by Louis van Tonder

  I recently had a spamming incident and got listed on a blacklist. I have rectified the issue, removed from the blacklist, but my IP reputation is now classified as a high volume sender. What is the best way to rectify this? I have an additional IP address. I am thinking configure my server to make outbound SMTP connections using the other IP. My questions are: How long does it take for my reputation to stabilize again? How do I configure my server/mailserver to use a specified outbound IP? Setup: Server 2008 Web hMailserver 2 IPs configured on one NIC Cloud based server Your urgent help would be greatly appreciated. Cheers

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• How to color highlight text in a black/white document easily

  - by Lateron

  I am editing a 96 chapter book. The text is in normal black letters on a white background. What I want to be able to do is: I want to have any changes or additions automatically shown in another (per-selected) color. Without having to a)high lite a word or phrase to be changed or added and then b)going to the toolbar and clicking on the font color In other words I want the original color of the text to remain as it is and any additions or changes to be visible in another color without having to use the toolbar. Can this be done? I use OpenOffice or Word 2007 in Windows 7.

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• How do I fix "Setup did not find any hard disk drives installed in your computer" error during Win X

  - by CT

  I just bought a nettop. It came with WinXP Home. I first installed Win 7 on it. I wasn't that happy with the performance so I decided to go back to XP. I am using an external dvd drive and a Win XP Pro disc. I boot from the dvd drive and during the install get this error: Setup did not find any hard disk drives installed in your computer. Make sure any hard disk drives are powered on and properly connected to your computer, and that any disk-related hardware configuration is correct. This may involve running a manufacturer-supplied diagnostic or setup program. Setup cannot continue. To quit Setup, press F3. This is the nettop in question: http://www.newegg.com/Product/Product.aspx?Item=N82E16883103228

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• Server 2012 Storage Pools, Raid Controller... can the Storage Pool deal with it?

  - by TomTom

  Before trying it out - I don't find any documentation. Given that Storage Pools have serious performance problems with parity, and do not rebalance data at the moment when you add discs, my preferred way to use them would be as think provisioned space, ISCSI targets - with every "Pool" running against 1 RAID that comes from a Raid controller (who also introduces SSD read and write caching - another thing missing from Storage Pools). The main question is - how does a Storage Pool handle the change in the underlying disc that can happen? I mostly talk about OCE (Online Capacity Expansion), where a disc after an expansion suddenly reports a larger space. Standard Windows allows you to use this additional space (and expand the partitions). How does a storage pool handle it?

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• Where should I go to learn about networking? [closed]

  - by Ollie Saunders

  I wonder if anyone could recommend resource or resources such as a good book that: explains how all the important protocols work and interact. I’m interested in those that are relevant in a typical home network and used over the Internet explains in detail how ADSL Internet connections work to the level of depth necessary so that I’m able to tweak and measure performance settings starts from the beginning but attempts to provide proper understanding rather than idiot-oriented steps to follow Basically, I’m interested in how these technologies work and tend to be implemented in hardware and software rather than “here’s what to do if…” I’m interested in Computer Networking by Andrew S. Tanenbaum and I wonder if anyone else has any experience with that title. It’s expensive but I could probably loan a copy for £3 from the library or so.

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• CentOS Vs Windows Server 2008

  - by Steve

  Hi, Apologies if the question appears ambiguous, I have little experience in this area and was after some informed opinions. I am deploying a test scenario of a server/client network and need to make some choices for Server. The client will be a Windows system as it meets the requirements for the client, the server choice has more room for selection. From my experience with Linux in general and the appealing nature of open source for low cost, security etc and the availability and performance of database and web server programs I have been considering CentOS as a server choice. I have the ability to make most of the choices of what software / server packages I wish to install. This includes Active Directory (something I have no experience with). How well does this operate with Windows clients? Am I being too selective and creating unnecessary complication by setting out not to use a Windows Server OS?

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• VMware ESXi 4 On-Disk Data Deduplication - possible and supported?

  - by hurikhan77

  Environment: We are running multiple web, database, and application servers which usually share a pretty common installation (gentoo linux) and similar configuration in VMware ESXi 4. The differences are usually only some installed features or differing component versions. To create a new server, I usually choose the most similar (by features) running server, rsync a copy of it into freshly mounted filesystems, run grub, reconfigure and reboot. Problem: Over time this duplicates many on-disk data blocks which probably sums up to several 10's of gigabytes. I suppose if I could use a base system as template with the actual machines based on top of that, only writing changed blocks to some sort of "diff image", performance should improve (increased cache hit rate) and storage efficiency should increase (deduplicated storage space). This would be similar to what ESXi already supports for RAM deduplication (page sharing). Question: Is there any way to easily do this on ESXi 4? I already share the portage tree via NFS but this would not work for the rootfs.

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• AWS: Should my EC2 and RDS instances be in the same Availability Zone?

  - by DOOManiac

  I just noticed that all of our EC2 instances are in zone us-west-2b, but our Multi-AZ RDS instance is in us-west-2a. Performance-wise everything seems to be okay, and it will be a hassle to "move" the instances to one place since you have to stop and re-create them all. However if either of the two zones goes down when we will have some downtime; if everything is in one zone then at least we have a higher chance of not being in the zone that has downtime... Is this something worth fixing, or am I over-thinking it? (I was about to purchase some EC2 Reserved Instances, which are tied to specific AZs, so I wanted to make sure before going through with it) Thanks!

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• How to turn off power metering in HP ILO2?

  - by Baron Throw

  I have an issue with all of my RHEL 5.3 servers, where HP iLo2 power meter checks the power draw of the power supply on the server. However this gets passed to the /var/log/messages in our host, and eventually fills up the logs. Anyone have any idea how to completely disable power meter option in iLo? I checked google and iLo2 documentation provided from HP, but found nothing that tells you how to disable it / turn it off. Maybe some CLI command? Im not sure. The message is: Aug 18 10:11:03 KAMIL-SERVER1 ipstor_hwmond: IPSTOR||1408371063||E||11788||sensors||Power Meter = 108.000 Watts [ low=na high=na]

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• Best practice for scaling a single application source to multiple nodes

  - by Andrew Waters

  I have an application which needs to scale horizontally to cover web and service nodes (at the moment they're all on one) but interact with the same set of databases and source files (both application code and custom assets). Database is no problem, it's handled already with replication in MongoDB. Also, the configuration of the servers are the same (100% linux). This question is literally about sharing a filesystem between machines so that its content is always correct, regardless of the node accessing it. My two thoughts have so far been NFS and SAN - SAN being prohibitively expensive and NFS seeing some performance issues on the second node with regards to glob()ing in PHP. Does anyone have recommended strategies or other techniques that don't involved sharding data across nodes or any potential gotchas in NFS that may cause slow disk seek times? To give you an idea of the scale, the main node initialises it's application modules in ~ 0.01 seconds. The secondary is taking ~2.2 seconds. They're VM's inside a local virtual network in ESXi and ping time between them is ~0.3ms

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• IPtables rate-limit, What are the differences between modules? Recent, Limit

  - by TechZilla

  I am doing some rate-limiting with IPtables, and i'm not sure if I should use "Recent" or "Limit" What are the differences between the two? If they both achieve the same result, which one has better performance? I would like to know, regardless if any difference would be perceivable. I am looking to ACCEPT if under limit, and REJECT if over. I'm not interested in thus bandwidth throttling, I don't want a queue. I don't need any syntax examples, both have ample use examples online. I have also used Limit in the past. I appreciate any responses.

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• Motherboard warning lights when plugging in a display port cord to graphics card?

  - by rllr

  Earlier today, my computer spontaneously shut itself off and refused to turn back on. I tested my PSU and it's operating fine. I unplugged everything and let it sit for a while and it started to make a high pitched coil whine/hiss. When I came back an hour later and plugged in only the power cord, it turned on without any issues. After some troubleshooting, I noticed my motherboard (Intel D975XBX2) has a red CPU led and VR led that come on whenever I plug my monitor into my graphics card via display port. DVI does not cause a similar issue. I was running three monitors off the card, so I need both DVI ports and the display port working. Is it likely my graphics card needs to be replaced, or should I be looking elsewhere to resolve this issue?

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• Can't connect Alienware M11x wireless to internet thru families router

  - by Jim Kron

  Morning All, Have an Alienware M11x loaded with Win 7 Premium with the Dell half card wifi. Also have a Netgear and Belkin USB external adapters (b/g and N to include dual radios. No joy either. Families Internet is served thru Charter and they use a Motorola Router. No matter if we reset the router, I cannot connect to the Net but can talk to the router. BTW... my brother only uses WEP as a number of connected items are old and my folks are not in a high threat area for attacks. Frustrated, as I know what I'm doing but this really has me stumped. Any thoughts? Much appreciated, Jim

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• How can I compare effective power usage of two CPUs / CPU+Mobo+Mem combinations?

  - by einpoklum

  I have this server which does mostly file sharing (with the associated storage). No serious number crunching and it isn't the firewall. My current box has a Celeron D processor (Prescott 336 2.8 GHz); and I'm considering replacing it with a Pentium D (Smithfield 805 2.66 GHz) - for reasons which do not involve performance. How can I know whether one can expect a higher or lower power consumptipn for the change? And how can I estimate the power consumption for each option?

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• Why does my CPU Usage reach 100% too often?

  - by deathlock

  I'm using a dual-core processor and often see my CPU usage reaches 100%. I realize this may happen if I'm running too much applications, so when I know the computer starts to run slowly, I start to close my applications. I usually run 4-5 applications simultaneously. Usually those are: web browser (Google Chrome), Adobe Photoshop, Notepad++, XAMPP, and Windows Task Manager. Usually I close tabs in my Chrome first, because I often browse the net with about 20 tabs/4 windows open, so I presume that would take much memory (bad habit, I know). But even after closing Chrome's tabs or closing other applications, my CPU Usage often stays at high percentage - 72% at best, 100% at worst. I check the Processes tab on Windows Task Manager and usually found the System, System Idle Process, or services.exe taking the highest CPU process (could reach 60). Why is this happening? And is there any solution? EDIT I have T2250 @ 1,73 Ghz and 2.5 GB RAM

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• Sync a specific folder of contacts to iPhone

  - by colemanm

  Is there a simple way to organize contacts in Outlook/Entourage and only have a subset of them synchronize with the iPhone over Exchange ActiveSync? Our CEO has thousands of contacts in his mailbox, but would prefer if only a small portion of them synched to his phone over the air... The iPhone's performance takes a huge hit keeping that massive dataset in order. If he could put some of the records in subfolders or something and only sync the top level, I think that would work for him. Does anyone know if this is possible?

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• Upgrading from MySQL Server to MariaDB

  - by Korrupzion

  I've heard that MariaDB has better performance than MySQL-Server. I'm running software that makes an intensive use of MySQL, thats why I want to try upgrading to MariaDB. Please tell me your experiences doing this conversion, and instructions or tips. Also, which files I should take care of for making a backup of MySQL-Server, so if something goes wrong with MariaDB, I could rollback to MySQL without issues? I would use this but i'm not sure if it's enough to get a full backup of MySQL-Server confs and databases mysqldump --all-databases backup /etc/mysql My Environment: uname -a (Debian Lenny) Linux charizard 2.6.26-2-amd64 #1 SMP Thu Sep 16 15:56:38 UTC 2010 x86_64 GNU/Linux MySQL Server Version: Server version 5.0.51a-24+lenny4 MySQL Client: 5.0.51a Statistics: Threads: 25 Questions: 14690861 Slow queries: 9 Opens: 21428 Flush tables: 1 Open tables: 128 Queries per second avg: 162.666 Uptime: 1 day 1 hour 5 min 13 sec Thanks! PS: Rate my english :D

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• Thoughts on Apache log file sizes?

  - by Nathan Long

  Do you place any limits on the size of Apache log files - access.log and error.log? Specifically, can you give: Reasons to limit log file sizes Disk space Any other? Reasons NOT to limit log file sizes Research into performance issues or security breaches Any other? Methods of doing so Cron job that periodically deletes the file, or the first N lines? Any other? Anything you might salvage before deleting For example, grep out how many times a file was downloaded before deleting the access logs I'd like get the thoughts of experienced sysadmins before I do anything. (Marking as community wiki since this may be a matter of opinion.)

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• Any way to disable specific CPU sleep modes?

  - by Philippe

  I just got a new Toshiba Tecra S11 notebook, which has a Core i5 520M CPU, and it appears to suffer from a well-known problem: a high pitched noise when the CPU is idle. Googling around revealed that this is caused by a specific power-saving mode in the CPU. In most cases, C4 mode is blamed for the noise. So my question is: is it possible to disable C4 mode (or any other "sleep" mode) using some utility or BIOS setting? I don't mind if it hurts battery life. I'd appreciate any advice on this matter. It's driving me crazy.

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• What hardware makes a good MongoDB Server ? Where to get it ?

  - by João Pinto Jerónimo

  Suppose you're on dell.com right now and you're buying a server to run your MongoDB database for your small startup. You will have to handle literally tens of thousands of writes and reads per minute (but small objects). Would you go for 2 processors ? Invest more on RAM ? I've heard (correct me if I'm wrong) MongoDB handles the most it can on the RAM and then flushes everything to the disk, in that case I should invest on a CPU with a large L2 cache, probably 40GB of RAM and a solid state drive.. right ? Would I be better off with a high end (~$11,309, 2 expensive processors, 96GB of RAM) server or 2x(~$6,419, 2 expensive processors, 12GB of RAM) servers ? Is Dell ok or do you have better sugestions ? (I'm outside the US, on Portugal)

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• using nmap to guess remote OS and probe service details on a single port only

  - by WoJ

  I am looking at scanning with nmap a large network in order to identify the OS of devices (-O--osscan-limit) probe for details of a service on a single port (I would have used -sV for all open ports) The problem is that -sV will probe all the ports (which I do not want to do for performance reasons) and I cannot use -p to limit the ports to the one I am interested in as this impacts the OS fingerprinting. I could not find anything in the manual to limit the service probing. Thank you for any ideas (including other approaches outside of nmap, though I would prefer to stick to nmap)

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• What happens when you add a Graphics card to a i7 with build in graphics (e.g. HD 4000)

  - by Matt

  I'm thinking of upgrading my computer from an AMD Phenom II X4 955BE with a AMD Radeon HD 6800 Graphics card (not integrated) to using a Intel Core i7 3770. As I have no knowledge of integrated graphics, my question is, what happens to the computing power when not using the HD4000 integrated graphics of the CPU (does it mean the CPU will run faster then it would if I relied on it?) Also what is better the CPUs inbuilt HD4000 or my Radeon Graphics card? I am mostly interested in terms of content creation: Using Adobe After Effects, 3D Rendering etc. Not too bothered about gaming performance. I will be using the spare parts of this build and older systems to make a second computer for network renders so what will be the advantages of keeping the Radeon with the current system for that?

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• Dell EqualLogic vs. EMC VNXe [closed]

  - by Untalented

  We've been looking into SMB SANs and based on the competitive pricing I've been getting we're really liking these two array's. There are some pro's to both solutions, but I've unable to really decide which to choose. The EMC offers better expandability since you can buy an additional shelf (roughly $1200) and can add drives then to the array. However, the Dell unit is still very nice. Can anyone comment on their experiences with the two and thoughts on this? Also, to get the VMware Storage API support you need VMware Enterprise. How much additional performance does this provide? It's roughly $15k more than the Essentials Plus bundle we're looking at (this is a small environment [3 Hosts 1 Array].

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