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• What does the "Maximum Frequency" number mean in the Windows Resource Monitor?

  - by nhinkle

  In the Windows Resource Monitor's CPU tab, there is a status box and graph for the "Maximum Frequency", right next to the "CPU Usage" values. What does this mean? The value is sometimes over 100% on my system... what could that imply? By looking at CPU-z's real-time report of the processor's clock speed, it seems to be loosely related to what frequency the CPU is running at, which would imply that it means "percent of maximum possible frequency the CPU is running at"; this would be of relevance on systems with SpeedStep and/or TurboBoost technology (or similar). Furthermore, setting the system to "power saving mode" lowers the "maximum frequency" value to around 60%, while setting it to "high performance" mode sets it to around 110%. However, the percentage does not seem to exactly correlate to the CPU speed being shown. What value is this actually representing then?

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• Why does TeamViewer launch a web server?

  - by OverTheRainbow

  Hello I just read this article which I find concerning: "After 90 minutes of troubleshooting, Nash traced the problem to TeamViewer, which he used to remotely administer the client's servers. It turns out the program had opened up its own webserver on the client's machine as soon as Apache went down and in the process made it impossible for the client, a large provider of business software, to restart its proper website." http://www.theregister.co.uk/2009/07/24/teamviewer_snafu/ I started using TeamViewer recently because it's just much better than UltraVNC (runs on both XP and Vista, the server dials out instead of requiring the user to open a port on their router + better performance than UVNC)... but I thought that TeamViewer had both the server and client connect out to TV's web server for data to flow between the two hosts. Why does TV even need to open a web server on the server host? Thank you.

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• Dummy/default page for apache

  - by Ency

  I'm trying to set up default page for my apache2, for following cases: User is accessing http://IP_Address instead of hostname Requested protocol (HTTP/HTTPS) is not available (eg. only http*s*://domain.com exists) Currently I've got something like that <VirtualHost eserver:80> ServerAdmin webmaster@localhost DocumentRoot /var/www/local/ <Directory /> Options FollowSymLinks AllowOverride None </Directory> </VirtualHost> I think, it works well, i'm trying to do similar thing for HTTPS, but it does not work. <VirtualHost eserver:443> SSLCertificateKeyFile /etc/apache2/ssl/dummy.key SSLCertificateFile /etc/apache2/ssl/dummy.crt SSLProtocol all SSLCipherSuite HIGH:MEDIUM ErrorLog /var/log/apache2/error.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn ServerSignature Off </VirtualHost> My default is places in sites-enabled as a first one 000-default I do not care about not certificate validity during accessing default page, my goal is not show different HTTPS page if user one of points is applied

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• Ubuntu 9.10 x86_32 with PAE causes graphics issues, mainly slowness

  - by widgisoft

  I've tried the 64bit version and found I was constantly hitting a brick wall trying to get 32bit stuff to run; I'd previously used PAE on 9.04 without any issues so figured I'd give it a shot. However, on 9.10 it seems PAE or the process of enabling PAE breaks the nvidia drivers/module somewhat as performance is terrible; I can't even enable desktop effects and there's lots of artifacting on random controls. Disabling the pae image and rebooting fixes the issue however I'm then stuck with "only" 2.7Gb of ram and unable to use the full 8gb that's installed. Is there somthing special I need to do when using pae and nVidia drivers or should I be using 64bit and just figure out how to force run 32bit packages? :-p

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• Trying to determine the correct number of XFS allocation groups for postgresql server on Linux

  - by HBlend

  I am running a postgres 8.4.5 server on the linux 2.6.33.7 kernel on an 8 disk raid array with an LSI controller. Most of the tables are around 1GB or less. I know that XFS uses allocation groups (AG) to achieve I/O parallelism. My first question is, does this mean that if two tables are in the same AG, all I/O requests are queued to both of them if either is being read from/written to? If so, I assume I would want to spread my tables across as my allocation groups as possible, correct? Wouldn't this ensure that multiple users querying different tables would get the best performance?

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• Architecture behind live streaming [on hold]

  - by l19

  I'm a Comp Sci undergraduate student, and I'm currently trying to understand the architecture behind streaming. I hear several terms and I'm not quite sure how they are related (e.g. streaming, broadcasting, ingesting, etc.) Is there a blog post or book that explains: How it all works in a high-level view (the workflow) The architecture (i.e. I capture content using my camera and want to display it real-time to an audience. I imagine that the content will be transferred to a server, but how does that server transmit the information to several users simultaneously?) Thanks!

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• Concurrent backups in SQL Server?

  - by Mikey Cee

  We currently have our backups managed by a third party company. There are a bunch of agent jobs created that take full backups (4 times a day) and transaction log backups (4 times an hour). We now want to manage our backups in house, but don't want to disable the third party's jobs until we are sure that we have everything configured correctly internally So I am proposing to have a short period (say, a couple of days) where backups are being taken both by the old and the new system. I am wondering what the ramifications of having these two different systems both manage backups, and the potential pitfalls of having backups taken simultaneously. Is this even supported? If so, and bearing in mind that the system can cope with one backup without any noticeable performance degradation, is it fairly logical to assume that it should be able to cope with two simultaneous backups? Currently the load on the server is fairly light and it rarely struggles. Any advice is appreciated

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• VirtualBox: Host OS processor is spiked while guest OS virtual processor is idle?

  - by Greg Mattes

  I'm running Windows XP 32-bit on Windows Vista 64-bit with VirtualBox 3.0.6. Whenever I run the XP VM, Vista (host) reports 100% cpu utilization even though XP (guest) reports between 1-5% cpu utilization. The host box has 2 GB of physical RAM. The guest/vm is configured with 512 MB. The host box has a 64-bit AMD processor. No apps (other than VirtualBox) are running on either host, they're just idling. Any guesses as to why the host processor is spiked? I've enabled various advanced features for the XP guest in the hopes of having better performance: Settings → System → Motherboard: Enable IO APIC Settings → System → Processor: Enable PAE/NX Settings → System → Acceleration: Enable VT-x/AMD-V and Enable Nesting Paging

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• New Seagate GoFlex external hard drive reporting temperature 50C and higher--defective or normal?

  - by rob

  I have a brand-new Seagate GoFlex hard drive, and my SMART diagnostics program (CrystalDiskInfo) is warnings me that the drive is running too hot. The lowest reported temperature I've seen it is 48C, and the highest so far is 56C (all of last week, it was at 50C). According to several sources I've found online, including a Google study, hard disks operating higher than 40C have shorter lifespans. The temperature in the room is usually about 23C (74F), and orienting the drive vertically vs. horizontally doesn't seem to affect the operating temperature. Does anyone else have a GoFlex external desktop drive that runs at 40C or cooler? Is my drive just defective, or is this high temperature common for these drives?

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• Terminal Services - MS Access Frequently "Not Responding"

  - by jonfhancock

  Exposition: We use a program built in MS Access that I serve via Terminal Services. I just installed a new TS Server with a Quad Core 2.6GHz Xeon, 8GB RAM, and 4 SATA drives in a RAID 0. In installed Server 2008 R2 (64bit obviously). It's only role is TS. The problem: With just a few sessions (under 10), I start getting frequent Not Responding messages in each session. When it happens, the users aren't doing anything particularly taxing, just form navigation and simple insert queries. I can live with some stalls, but it is visually jarring in WS08 because the screen goes gray, and it presents a dialog offering to wait or close with some other options. Questions: Any suggestions for improving performance and reducing hangs? Is it possible to disable the dialog (always wait) and screen graying?

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• Best way to duplicate databases nightly?

  - by Margaret

  Hey all We just got two new servers, that are running Windows Server 2008. The intent is to make the machines pretty much identical, copying the content of the master to the slave on a nightly basis, so that if anything fails, the second copy can stand in immediately. It doesn't need to be up-to-the-minute mirroring, though I suppose that wouldn't hurt if performance is not affected. The two machines will, amongst other things, each be running an instance of SQL Server 2008. The aim is to duplicate the databases on the master down to the slave on a nightly basis. Unless I'm misunderstanding, the slave databases in mirrored databases require the primary to be present to work correctly; I'm hoping for some solution where we have a second machine that can be up and running with minimal downtime if the first one falls over. Am I misunderstanding mirroring? Is that the best way to do things, or should I use some other mechanism? If so, what?

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• Putting codes in email subjects

  - by Christian W

  We send out large quantities of email to our customers (work environment surveys). Sometimes our mailinglist for a client isn't quite up to date and we get bounce mails (address not found and such). However, since these all bounce back to the same address it's difficult to keep track on which bounce belongs to which client. (The email subject is usually pretty generic, like "Welcome to the work environment survey") This is why I would like to insert a identifier in the subject line of the email. So the subject would be "Welcome to the work environment survey (1234)" where 1234 is a number identifying the client/survey. We already rank pretty high because of the way our mailer handles sending the mails. Usually we contact the clients it-dept to get them to whitelist us in their firewall/spamfilter. Would this increase our spamscore in spamfilters?

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• Matte or non-widescreen laptop? Do they exist?

  - by Alan Harris-Reid

  Does anyone know of any matte-screen laptops being sold now (15.6 or 17") in the UK? All I can find is the Dell Vostro 3500/3700 range, but there is a premium of around £200 over the price of their Inspiron range (for the 17" model), and I find it hard justifying the extra cost just to have a matte screen. I do not like glossy screens, but it seems the laptop industry has gone the way of "glossy is better - let's get rid of matte". I have read and heard from other developers that as long as there are no strong light sources to reflect off the screen, one can soon get used to a glossy screen, but I am yet to be convinced. I would also be interested if anyone knows of any non 16:9 screen laptops. I find this ratio too wide and not high-enough for the work I do. 16:10 or lower would be better. Any opinions would be appreciated. Alan

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• What desktop chipsets support AMD's Rapid Virtualization Indexing?

  - by netvope

  Rapid Virtualization Indexing (RVI) is a hardware virtualization feature that can potentially give significant performance improvement. Intel's equivalent is Extended Page Tables. See http://en.wikipedia.org/wiki/Rapid_Virtualization_Indexing for more details. My question is: Does RVI require motherboard or chipset support? If yes, what desktop chipsets support it? I've ordered a Phenom II CPU (which supports RVI) but I haven't bought the motherboard. I'll install XenServer or VMware ESXi (which both support RVI) on the new computer.

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• Is there any way to stop or pause Windows fake-raid re-synching?

  - by haimg

  I have two physical disks, each one holds two volumes, they are Windows fake-RAID1. E.g.: Disk A: Partition1 Partition2 Disk B: Partition1-Mirror Partition2-Mirror After an unclean reboot, Windows started resynching these as expected. What was not expected, however, is that it started resynching both volumes at the same time. Both disks seek back and forth like crazy, and synching performance is horrible. Question: Is these any option to stop or pause synching of just one volume? I know I can put one of the disks offline, but that will stop synchronization of all volumes on that disk. Note: I have certain reasons why I need to torture myself with Windows RAID. I'm not interested in alternative RAID solutions right now.

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• A PDF viewer for large margins in fullscreen

  - by jmn

  I am looking for a way to pleasantly read PDF files on my widescreen (22" 1680x1050) monitor. My problem with all pdf the PDF-viewer applications I have tried is that they do not handle wide and high margins well. If I go to fullscreen mode in my viewer and zoom in so that the extra margins are cropped, I can view the pages nicely, the annoyance however is that I have to reposition the pages every time I navigate to another page. I am sure there must be a way to make a PDF viewer that can solve this problem and perhaps there is one you know of? I am aware of something called PDF Reflow in Acrobat Reader but that only works with certain specific (tagged) files. I want a PDF viewer with a smarter zoom/next page function or an automatic margin-crop function. Is there such a thing?

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• Snow Leopard: Optimization

  - by Shyam

  Hi, I have bunch of questions: I have a Mac network, which has five Mac's. Right now, they are individually getting software updates. Is there a way to download the patches/security updates in a single place (repository) and point all machines to this location? Personally, I have tools like Monolingual and Onyx, but are there tools you could recommend that affect the performance of the Operating System positively? Tweaks would be nice. Links and pointers, would be really appreciated. I've read about Time machine, is there a way to backup all machines to a network drive using this tool? Thanks!

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• Internet connection slower than network connection speed

  - by Mike Pateras

  I've got a computer connected to a wireless router on a different floor. When I look at the network connection, I'm told the signal strength is low, and that I've got a connection of about 26mbps (often higher). However, my internet connection on that machine is very slow. Speedtests show it at about 1-2mbps, and it really shows when loading pages and video. I have fiber optic internet access, and the machine that's connected to the router/modem via cable gets the 20mbps on speed tests, and is extremely fast in every day use. My question is, is the advertised 26mbps+ connection speed perhaps inaccurate, and that my wireless bandwidth is the likely bottleneck here? Or is the signal strength what's key here? And what might I do about this? Power cycling the router helped a bit, a speed test went as high as 6mbps after doing that.

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• Is there a way to allow administrators to change or reset user passwords?

  - by Jon Seigel

  We have a custom MembershipProvider implementation using form-based authentication (FBA) under Sharepoint 2007. I've searched high and low on Google, but only found: Active directory and FBA implementations to allow users to change their own password Active directory instructions (including video!) for administrators to change other users' passwords Have we missed an option to enable the latter under FBA? Should this work by default and is the MembershipProvider misbehaving? The procedure to do this as under active directory would be ideal, but the "Change Password" link does not appear in the Edit User screen. We verified that the logged-in user is a site collection administrator.

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• Does Ubuntu 12.04.1 come with everything I need for using virtual servers and are the tools efficient?

  - by orokusaki

  I noticed that Ubuntu 12.04.1 comes with Xen, OpenStack, KVM and other virtualization-related tools. I have used VMWare in the past. If I was to use Xen for visualization, would I see considerable performance lost, since Xen is run on the host OS? Is it even run on the host OS, or is it like VMWare where it's installed below any Linux OS on the machine (embedded, I guess is the word)? Do you have any recommendations on what sort of set up to use with these built-in tools? I have 2 physical servers, side-by-side. Each will need a VM used for Postgres and a VM used as an app server. One will be a failover for the other.

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• CPU Temperature required for auto-shutdown.

  - by ULTRA_POROV

  At what temperature do most motherboards/cpus power down to prevent damage? And what determines this? Is it the bios, the motherboard, the cpu itself? I have a cpu that stays on in the bios until about 105 C and then shuts down. I am not sure if this is correct? Maybe the sensors are wrong. I think 105 is a bit high. I guess 80-90 would be more reasonable for an auto shutdown.

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• Can SATA be used to connect computers?

  - by André

  Can SATA be used to connect two computers together, just like a crossover Ethernet cable would do ? I know SATA has no "networking" features and even though a controller may have multiple ports, the drives don't "see" each other, and that in SATA one device acts as the host (the computer) and the other device is some kind of "client" (the storage drive). But still, did anyone attempt to make a kernel module that would make one computer appear as a "client" (so that the host's SATA controller detects it as a standard hard drive) and then set up like a pseudo-Ethernet link or a very high speed serial link (and then run pppd on it and do networking) ? Note : I know this is an unprofessional and totally stupid idea, I'm just asking out of curiosity.

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• ATI video cards - unable to use entire monitor (1080p)

  - by Walter White

  Hi all, I have a Dell s2409w, 24" 1080p monitor. With nVidia, I would plug-in the monitor and voila, it automatically knew it was 1080p (1920x1080). I have both a Windows laptop and Ubuntu laptop. Neither is capable of using the fullscreen even though the monitor reports the input is 1080p. I am connecting the monitors via HDMI, is there a 'special' setting I am missing to make this work? Otherwise, I like the performance of my ATI video cards, the drivers seem to be stable and reliable. Thanks, Walter

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• Is there a Linux-compatible R/C simulator that works with real radios?

  - by Norman Ramsey

  My Dad flies radio-controlled (R/C) aircraft. He used to run a simulator called "RealFlight" which allowed him to connect his actual radio to his computer and fly simulated craft. He learned enough to fly actual planes, but he wants to move up from "trainer" aircraft to higher-performance craft. After some crashes, he'd like to go back to the simulator for a while. The catch: he's given up Windows and is now running Ubuntu. Question: is there an R/C flight simulator that Runs on Ubuntu? Allows you to connect your radio and use it to control the simulator, preferably through a USB port?

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• Apache - Difference between ScriptAlias and WSGIScriptAlias

  - by Jiri Kadlec

  I'm using apache on RHEL Linux server In my /etc/httpd/conf.d/httpd.conf there are two directives: WSGIScriptAlias /apps /var/www/apps <Directory /var/www/apps > Options MultiViews ExecCGI MultiviewsMatch Handlers SetHandler wsgi-script Order allow, deny allow from all </Directory> ScriptAlias /scripts /var/www/scripts <Directory /var/www/scripts > Options MultiViews ExecCGI MultiviewsMatch Handlers SetHandler wsgi-script Order allow, deny allow from all </Directory> What is the difference? I understand that WSGIScriptAlias is restricted for running Python scripts and ScriptAlias also allows running perl scripts. Can I always use ScriptAlias instead of WSGIScriptAlias? Are there any performance advantages of using WSGIScriptAlias instead of ScriptAlias?

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