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  • Which to install: Apache Worker or Prefork? What are the (dis-)advantages of each?

    - by Aron Rotteveel
    Based on the descriptions for both the Prefork and Worker MPM, it seems the prefork type is somewhat outdated, but I can't really find a proper comparison of the two types. What i'd like to know: What are the differences between the two versions? What are the (dis-)advantages of each server type? Are there any basic guidelines on which type to choose based on the conditions? Are there any big performance differences between the two?

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  • How can virtualization be efficient?

    - by pestaa
    As I understand, the virtual machine and the guest OS doubles the amount of abstraction layers (that are computationally relevant) between the user interface and the pure power of the hardware. Some of the said abstraction layers are (emulated) hardware, drivers, IO interfaces, etc. Top-notch virtualization solutions like Xen probably eliminate a few of these complexities, but I still wonder how efficiency is achieved in these environments; and whether manageable cloud servers are really worth the performance price.

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  • How do I disable Aero transparency in Firefox 4?

    - by Titus
    I noticed that the transparent interface in Firefox 4 for Windows 7 is really curbing performance. After Googling for a method to disable Aero for Firefox, however, I got no results. There just doesn't seem to be a straight forward (such as a simple Boolean to turn it off in about:config) method to get rid of Aero effects. Is it even possible in the Firefox 4 beta? I'm using Firefox 4 beta 12 (soon to be beta 13 after the update).

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  • Full list of top-like tool family for perfomance monitoring in linux: iftop iotop htop atop more? [closed]

    - by Yauhen Yakimovich
    Top-like utilities are extremely handful in my work and I want to make sure I am not missing any of them. Please extend the following list of performance monitoring (top-like) family of linux tools: top - original tool htop - adds support to multicore/cpu iotop - input/output monitoring iftop - network monitoring atop - merges previous elements into a single overview slabtop – displays a listing of the top caches ? The only criteria - maturity and similarity in function/style.

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  • Western Digital External 1TB HDD, possible to mount internally?

    - by JL
    I have an external WD MyBook. it has USB, Firewire and e-sata connectors, but I would like to mount it internally in my desktop system instead for extra performance, and I'm also considered about how long it will last externally. Does anyone know if this is possible? Has anyone done this with success? I would have to remove it from the existing external chasis, but before I mess around with this, I would like to know if its even possible. Thanks in advance

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  • Is it possible to change the Raid5 chunk size of an existing device?

    - by AlexCombas
    I have an existing raid5 device which I created using mdadm on Linux. When I created the device I set the chunk size to 64 but I would like to test the performance of various sizes but I don't want to have to rebuild my entire system to do so. If it is not possible to do it live then is it possible to do this by booting with a rescue disk? Any advice on the steps how to do this, either live or with a rescue disk, will be greatly appreciated.

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  • SQL Monitoring Overview

    - by user45237
    Hi I currently loook after 20 odd databases in SQL server 2005 and need a tool for monitoring the performance and keep me informed if a database is running slow. Is there anything I can run within Managment studio of any other good third party tool (Pref free) that can do the job. Thanks

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  • Is 768Mb RAM @ 333Mhz faster or slower than 512Mb RAM @ 400Mhz?

    - by Peter
    I have a simple question, but am not a hardware specialist. I have a small low-budget server with 512 Mb SD RAM, 400 Mhz. I have an extra 256 lying around, but it's 333 Mhz. I know I can add it to the system, and that it would automatically adjust the 400Mhz to 333Mhz. But my question is, which is faster/better for performance: 512 at 400Mhz, or 768 at 333Mhz?

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  • compare windows server for patch/update/hotfix installs

    - by user12002221
    Are there any tools that can be used to connect to windows 2008 servers, and get a comparison of the installed patches/updates on the servers, showing what is installed on one and not on the other? This is to help isolate an issue we are seeing on a specific windows server, in a load balanced setup. There is a certain performance/locking issue, which is mitigated whenever one of the servers is disabled. Please share, if you have any suggestions. Thanks in advance!

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  • advice on memory purchase for AMD 6134 2P server

    - by maruti
    HP DL165G7 with 2x AMD 6134 target RAM: 48GB options: 2GB dual rank registered DIMM - 24 Qty HP-2GB 2Rx8 PC3-10600R-9 Kit 4Gb single rank registered DIMM - 12 Qty HP-4GB 1Rx4 PC3-10600R-9 Kit which of the above is recommended for performance (ESX server)? AMD CPUs suffer any downgrade on mem bandwidth like Xeons?

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  • Technical details for Server 2012 de-duplication feature

    - by syneticon-dj
    Now that Windows Server 2012 comes with de-duplication features for NTFS volumes I am having a hard time finding technical details about it. I can deduce from the TechNet documentation that the de-duplication action itself is an asynchronous process - not unlike how the SIS Groveler used to work - but there is virtually no detail about the implementation (algorithms used, resources needed, even the info on performance considerations is nothing but a bunch rule-of-thumb-style recommendations). Insights and pointers are greatly appreciated, a comparison to Solaris' ZFS de-duplication efficiency for a set of scenarios would be wonderful.

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  • Outlook 2007 + Windows 7 + Exchange Server = slow sync

    - by wacky_doug
    I just upgraded a Vista machine to Windows 7. The machine is running Outlook 2007 SP2 with the KB970944 performance hot fix. Now, syncing to the Exchange server can take 20 minutes, whereas it was very fast before the Windows 7 upgrade. I believe we're running Exchange 2003, but I'm not 100% sure. Anyone else seeing this? Any fixes yet?

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  • Can I boot my notebook via eSata pci-xpress card?

    - by OliverS
    I would like to boot directly from an external hard disk to improve performance over my internal notebook hard disk. My notebook has no native eSata jack but a pci express card. As my BIOS doesn't support the card on boot time so no way directly booting it. My question is, is it possible to work around this issue by using an USB stick or similar with a boot loader like grub and if so, will this only work for Linux or Windows as well?

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  • eVGA GTX 550 Ti 1GB Super OC or eVGA GTX460 SE 1GB SuperClocked OC [closed]

    - by Tusk
    I'm stuck between ´eVGA GTX 550 Ti 1GB Super OC´ and ´eVGA GTX460 SE 1GB SuperClocked OC´. I know that 460 is better in performance, but does the 550 Ti has any newer feature, which makes it better? I'll mostly use it for HD movies and HD gaming (skyrim, la noire). Would appreciate opinions about which card is better, and if you have one of these, please provide something useful information. Thanks.

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  • Is data=journal on a separate device on Ext4 as good as using a RAID controller with battery backed cache for file system consistency?

    - by Jeff Strunk
    It seems to me that data=journal prevents file system inconsistency in the case of power failure. Using it with a dedicated journal device mitigates the performance penalty of writing the data twice. A power outage would still lose the data that is currently being written to the journal, but the file system on disk would always be consistent. If that amount of loss is acceptable, is a RAID controller with battery backed cache really worthwhile?

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  • Benchmark virtual machines?

    - by evan
    I'm looking for a good way to benchmark the performance of Ubuntu machines (preferably from the command line - only care about harddrive speed, memory, and cpu - not graphics). Are there any programs that could also be used on Mac or Windows so I could compare the results against an Apple or PC Desktop? Ultimately I'd like to use these benchmarks to compare different virtual machine configurations (speeds on different hosts and different hardware to get practical idea of the differences between different setups a rigs). Thanks!

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  • Reverse NAT Setup for Hyper-V on Win 2008 R2

    - by sukru
    I'm trying to setup a Linux server behind a Windows Hyper-V host that will help supply some of the services (SSH, HTTPS, etc). However getting RRAS configured for reverse NAT (port forwarding) turned out to be a non trivial task. As a staring point, I tried forwarding port 22 (SSH) to the virtual machine. The virtual machine is on a public interface (i.e.: it also has a visible IP on the same network as the host). On RRAS management console I tried to add a rule, by adding "Local Area Connection" to NAT pool (Public Interface - Enable Nat), and an incoming rule for port 22 - :22. I also tried with the same port enabled on Windows Firewall (and not). The NAT management page tells there are "1 mappings" and "30+ Outbound packets transleted". However all other counters (Inbound packets translated, and respective rejected ones) are always zero. (I'm trying to access the server from an external machine). I can directly access the service if I give the VM's public IP, but not the host's one. Is there a way to enable this on RRAS?

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  • Why should I prune old objects from Active Directory?

    - by Nic
    What is the point of pruning old objects from Active Directory, especially computer accounts? If a computer is wiped or destroyed, then the stale computer account doesn't pose any security risk because it can't be used any more. And I can't imagine that stale objects affect performance very much, because if they aren't being changed then they aren't being replicated. So, what is the real motivation to keep Active Directory clean of stale objects?

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  • What's a lightweight alternative to Word / Writer? [closed]

    - by vemv
    I'm looking for a desktop, cross-OS, Word/Writer-like program (this is, that lets the user format the content, as opposed to source code editors) without all the feature bloat + performance overhead I'd get with an office suite. Ideally, most of its features would be focused on: the text editing itself - clever replaces, indentation control, etc, and separating the content from its presentation, à la HTML/CSS. Which programs match these features?

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