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  • Is DHCP required on a Win2003 secondary DNS server?

    - by Mark
    We have a secondary DNS server and we've been noticing that the DNS.exe process is getting rather large. (Like, rebooting the server large) I read something somewhere that 2k3 has two relevant memory leak issues, one is the DNS (supposedly fixed in 2007), and another for DHCP. DHCP is running on this server, but I don't see why. Hence my question. Is the DHCP service required for (secondary) DNS to function? Server has: 24 cores (X5650), 8GB RAM

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  • Linux RAID-0 performance doesn't scale up over 1 GB/s

    - by wazoox
    I have trouble getting the max throughput out of my setup. The hardware is as follow : dual Quad-Core AMD Opteron(tm) Processor 2376 16 GB DDR2 ECC RAM dual Adaptec 52245 RAID controllers 48 1 TB SATA drives set up as 2 RAID-6 arrays (256KB stripe) + spares. Software : Plain vanilla 2.6.32.25 kernel, compiled for AMD-64, optimized for NUMA; Debian Lenny userland. benchmarks run : disktest, bonnie++, dd, etc. All give the same results. No discrepancy here. io scheduler used : noop. Yeah, no trick here. Up until now I basically assumed that striping (RAID 0) several physical devices should augment performance roughly linearly. However this is not the case here : each RAID array achieves about 780 MB/s write, sustained, and 1 GB/s read, sustained. writing to both RAID arrays simultaneously with two different processes gives 750 + 750 MB/s, and reading from both gives 1 + 1 GB/s. however when I stripe both arrays together, using either mdadm or lvm, the performance is about 850 MB/s writing and 1.4 GB/s reading. at least 30% less than expected! running two parallel writer or reader processes against the striped arrays doesn't enhance the figures, in fact it degrades performance even further. So what's happening here? Basically I ruled out bus or memory contention, because when I run dd on both drives simultaneously, aggregate write speed actually reach 1.5 GB/s and reading speed tops 2 GB/s. So it's not the PCIe bus. I suppose it's not the RAM. It's not the filesystem, because I get exactly the same numbers benchmarking against the raw device or using XFS. And I also get exactly the same performance using either LVM striping and md striping. What's wrong? What's preventing a process from going up to the max possible throughput? Is Linux striping defective? What other tests could I run?

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  • Monitor ASP.NET Session State Variables

    - by Dave Johnson
    We are running a number of ASP.NET applications on W2K3 Server and IIS 6.0, and are looking for a way to be able to monitor ASP.NET session state variables (InProc) that are stored in memory. We are thinking there may be some memory optimization opportunities with some of these session state variables potentially consuming large amounts of RAM. Is there a way to accomplish this through IIS or Windows rather than instrumenting all of the individual Web apps with code to monitor the session state variables?

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  • setting up Windows 2008 STD EN on dedicated server

    - by sunny
    Dear experts, I just purchased a dedicated server and i need to setup for hosting my website. Please help me how do i setup the server step by step. server details : Windows 2008 STD EN SQL Server Web 2008 Core2 Quad 2.4GHz 6GB RAM Single-Power 150GB Velociraptor 10K RPM Please help me for : 1.Setting up server and hosting website 2.Email settings 3.How to set DNS as domain is from another host. regards, Sunny

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  • Windows server 2008 R2 error :The page file is to small to complete the action

    - by kishore
    I have a windows server 2008 R2 standard edition. The system suddenly stopped accepting remote desktop connections. When I tried to connect directly to the console, I am unable to start any applications. I got errors "The page file is to small to complete the action". Under takmanager in performance the system shows "Commit(GB) 127/127". What does this imply? The system has 32 GB ram, 5 raid disks each 150 Gb

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  • Where to get laptop replacement parts?

    - by wai
    I am sure some of us have older laptops that still works but just one or two parts started not working very well. However, to send it back to the manufacturer for repair might not be worth the money (as some of them even charge consultation fees just to have it checked) as these old laptops are most probably well beyond warranty. Replacing these one or two parts could give your laptop a new lease of life. For example, I have a Dell Inspiron 640m which the fan recently failed. Everything else still works. I know enough to open up the laptop (after reading the service manual) and put it back together again, hence a replacement fan could save it. However, finding these parts turned out to be difficult. I guess I wouldn't be able to get it from Dell since I have been searching around the Dell forums and concluded if I were going to get Dell to at least talk to me, I would have to pay some money (since my warranty expired). I found this online:- http://www.parts-people.com/index.php?action=item&id=3725 However, as I don't live in the United States, shipping alone would cost me 3 times more than the part in question. In addition, if there's a problem, it would be difficult because I probably would have to mail the parts back (costing more money). One of my friend spilled water on her Macbook, she sent it back to Apple and they told her the cost of repairing it exceeds that of buying a new Macbook. They probably have to change everything except the LCD screen. I opened it up and found that most of the parts are still working, only the RAM had fried. Replaced it and it's working again. For some time before discovering only the RAM fried, I was toying with the idea of replacing the logic board myself but looks like I didn't have to. =) Now I know there's a site for Macbooks used replacement parts:- http://www.ifixit.com/ The question is, does anyone know where to get replacement parts at their own locality? It might benefit the community as a whole. Someone might know a local computer store that sells precisely just the things we needed (for now, I hope to find a shop that sells just the fan). If you own a laptop which you had an easy experience finding the replacement parts, do post that as well. PS: I wish laptop manufacturers have outlets where they sell these replacement parts (or at least let you place an order).

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  • Using SSD as disk cache

    - by casualcoder
    Is there software for Linux to use an SSD as disk cache? I believe that Sun does something like this with ZFS, though not sure. A quick search provides nothing suitable. The goal would be to put frequently requested files on the SSD on-the-fly. Since the SSD has more capacity than RAM for less money and better performance than hard disk, this should provide an efficient performance boost.

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  • Optimal setup for ASUS P6X58D Premium BIOS (no OC)?

    - by rumtscho
    Normally, I'd trust the mainboard manufacturer to choose the best options as defaults. But I had trouble with the board, because even with Quick Boot enabled, it booted twice as slowly as a Pentium 4 Celeron. Then I changed lots of options at once (most of them weren't explained in the manual, just mentioned with a single sentence) and the boot time is only marginally worse than the Pentium 4 (54 sec against 46 sec from button to pw entering screen). Now I don't know if I have turned something off which should have stayed on. I guess I even won't be able to boot from a CD now, because even though it is present in the boot sequence, I took off a timeout I think it needs to check whether there is a disk in the drive. The second reason is that I don't have an internal HDD, only a SSD. I forgot my sources blush but I am under the impression that today's BIOS and OS options are geared toward booting from a HDD, which is often less than optimal when one boots from a SSD, especially when there are functions which cause avoidable writing cycles, as a SSD wears out after too many writing cycles. Most of the things I've read concern the OS, but there are some BIOS-relevant options too. I am especially confused about the disk mode. The board supports AHCI, IDE-simulation and RAID, but of the different articles I've read, there is a proponent for each and no clear arguments for any. So can one tell me which options are important in general and which are important for a SSD-only system? I don't want to overclock the CPU, so you don't have to say anything about this (yes I know the board is meant for OC:)). I am thinking of overclocking the RAM, since they sold me 1600er heatsinked modules which are running at 1066 now, but I'm not sure yet about that. The rest of the system: i7-930, Intel X25-m G2, 6 GB RAM, GTS 250, some no-name Blue-ray ROM. 2 external HDDs over USB 2.0. Lots of other USB-connected hardware (12 devices I think), no SATA 3 drives (will disabling the controller have an impact on performance?), no LAN, only WiFi. Lucid Lynx 64 bit, no dual boot, no virtual installations. The main uses of the system are: managing and playing/showing all the media stored on the external disks, lots of image manipulation, some video editing, a bit of (non-demanding) gaming, rarely development. Lots of Internet surfing too, but this shouldn't have much impact on performance.

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  • Some apps very slow to load on Windows 7, copy & paste very slow.

    - by Mike
    Hello, I searched here and couldn't find a similar issue to mine but apologies if I missed it. I've searched the web and no one else seems to be having the same issue either. I'm running Windows 7 Ultimate 64bit on a pretty high spec. machine (well, apart from the graphics): Asus M4A79T Deluxe AMD Phenom II 965 black edition (quad core, 3.4GHz) 8GB Crucial Ballistix DDR 1333MHz RAM 80GB Intex X25 SSD for OS 500GB mechanical drive for data. ATi Radeon HD 4600 series PCI-e Be Quiet! 850W PSU I think those are all the relevant stats, if you need anything else let me know. I've updated chipset, graphics and various other drivers all to no avail, the problem remains. I have also unplugged and replugged every connection internally and cleaned the RAM edge connectors. The problems: Video LAN (VLC) and CDBurnerXP both take ages to load, I'm talking 30 seconds and 1 minute respectively which is really not right. Copy and paste from Open Office spread sheet into Fire Fox, for example, is really, really slow, I'll have pressed control V 5 or 6 times before it actually happens, if I copy and then wait 5 to 10 seconds or so it'll paste first time so it's definitely some sort of time lag. Command and Conquer - Generals: Zero Hour. When playing it'll run perfectly for about 10 or 20 seconds then it'll just pause for 3 or 4 then run for another 10 or 20 seconds and pause again and so on. I had the Task Manager open on my 2nd monitor whilst playing once and I noticed it was using about 25% of the CPU, pretty stable but when the pause came another task didn't shoot up to 100% like others on the web have been reporting (similar but not the same as my issue, often svchost.exe for them) but dropped to 2 or 3% usage then back up to 25% when it started playing properly again. Very odd! But it gets even odder... I had a BSOD and reboot last week, when it rebooted the problem had completely gone, I could play C&C to my heart's content and both the other apps loaded instantly, copy and paste worked instantly too. I did an AVG update earlier this week which required a reboot, rebooted and the problem's back. I don't think it's AVG related though, I think it was just coincidence that's the app that required a reboot. I think any reboot would have brought the issue back. A number of reboots later and it hasn't gone away again. If any one could make any suggestions as to the likely cause and solution to these issues I'd be most grateful, it's driving me nuts! Thanks, Mike....

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  • How many domains can you configure on a Sun M5000 system?

    - by Andre Miller
    We have a few Sun M5000 servers with the following configuration: Each system has 2 system boards each containing 2 x 2.5Ghz quad core processors Each system board has 16GB of RAM Each system has 4 x 300GB disks I would like to know how many hardware domains can I configure per system? Do I need one system board per domain (implying a total of 2 domains), or can I create 4 domains, each with one cpu each?

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  • "Busy" icon not spinning in Windows 7

    - by Débora
    Hi there, I just got a new Sony Vaio with pre-installed Windows 7 and I noticed that the busy icon (that is, that little blue wheel that stays next to the mouse pointer when Windows is processing something) doesn't spin, ever. Does anyone know what could cause this, or how to fix it? I don't know if my computer specs would make a difference in this case, but here they are: VAIO VGN-NW240F 4 GB RAM 320 GB HD Intel Core 2 Duo Windows 7 Home Premium 64 bits Thanks in advance :)

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  • Why am I having trouble installing Xenserver?

    - by Lee Tickett
    I have two almost identical servers: Supermicro X8SIL-F Intel x3470 16GB RAM 16GB USB Pendrive I have tried installing XenServer 6 on both servers but when the server then attempts to boot it hangs at the loading screen: If I attempt to validate at the beginning of the installation i get the following error(s): Yet i've checked the md5 hash is spot on and i've tried from virtual disc, physical disc, http and nfs all yield the same result! What's going on? Thanks

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  • MySQL: Load database to memory

    - by Adam Matan
    Hi, Is there a way to load an entire MySQL database to the RAM, especially on en EC2 server? The database is quite small (~500 MegaBytes) I have enough memory Speed issues are crucial - the resulted queries are used to serve a dynamic webpage. Thanks, Adam

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  • I used route delete 0.0.0.0 in Windows 7 and now i can't connect to my adsl internet

    - by Santiago Sanchez
    I was looking for a way to portfoward 0.0.0.0 default gateways and I found in a Microsoft page that I had to try the command route delete 0.0.0.0, my internet disconnected and I couldn't connect to the internet anymore... Does anyone have a solution? It's an ADSL Modem. I have: Windows 7 x32 4 GB ram A kanji modem that has this problem too... It's like Windows doesn't detect the wireless adapter, so it won't connect to the internet.

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  • Software to check configuration and diagnostic of my PC is well configured

    - by aiacet
    Is there a utility, software or program than can check that my PC is well configured? Features I'm looking for: Checks to see if the communications between all the components works correctly Indicates if the OS is working properly Check the RAM and memory paging is configured correctly My system: AMD Phenom II X4 955 Black Box 125W Asus M4A785TD-M EVO Radeon HD5770 1GB GDDR5 Asus CoolerMaster GX 650W G.Skill 2x2GB PC3-12800 1600Mhz-787 4GBECO Western Digital 1TB SATAII 64MB Windows XP 32bit Antivirus and firewall: F-secure

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  • Finder Using Nearly 100% CPU

    - by jerwood
    I'm having a problem where the Finder uses WAY too much CPU time. It's using up to 100% of one of my cores. I'm running 10.6.2 on a MacBook Pro w/ 6GB of RAM, plenty of fast (SSD) disk space. I also run DropBox and BackBlaze. I've tried disabling my third party stuff (DropBox and BackBlaze), but that doesn't seem to help. It's killing my battery life!

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  • Running virtual machines: Linux vs Windows 7

    - by vikp
    Hi, I have tried running windows xp development virtual machine under windows 7 and the performance was dreadful. I'm considering installing Linux and running the virtual machine from the Linux, but I'm not sure whether I can expect any performance gains? It's a 2.4ghz core 2 duo machine with 4gb ram and 5400 rpm hdd. Can somebody please recommend very cut down version of linux that can run VMWare player and isn't resource hungry? Thank you

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  • Mac OS X kernel panic after TM restore

    - by Sev
    I changed my HD in my MacBook Pro, and restored from Time Machine backup. Now I keep getting kernel panic error everytime I restart. I booted from the DVD and ran a few tests, noticed that HD and RAM are being detected, also did a repair on the disk through disk utility, still getting same error. Any suggestions?

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  • computer not recognizing hard drive

    - by Elliott
    Hey, a few days ago my computer wouldnt boot..said something along the lines of "Please insert correct boot media and press any key" Its oldish so I tried what I could and just went out to buy new hard drive. Yesterday, installed it and it worked fine..put Windows XP onto in sp3 etc, turned on today and the same thing has happened ! Tried changing cables, remove graphics card etc, restoring bios to default but nothing works. Motherboard : Asus A8R32-MVP Deluxe Ram : 2GB HD : 320gb Hitachi Any ideas? Thanks :)

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  • Install virtualization software on a remote linux machine as a non-root user

    - by Cetin Sert
    Hi, 1) Is there a way for me to install VirtualBox as a non root user? I compiled it from the sources but cannot find a way to load the kernel modules it requires? Is there anyway to make it run? 2) Is there any other virtualization software you have ever installed on linux successfully as a non root user, VMWare, Parallels, etc.? The aim is to run Windows as a virtual machine with more than 16GB RAM. Bests, Cetin

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  • SQlite and zabbix

    - by chris
    Has anyone ever used sqlite as the only database for their zabbix server? I'll be monitoring a uplink ports on a couple hundred switches and a small number of other services such as radius or http servers. This will be on an oldish opteron server with 2 cpus and 8gb of ram.

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