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  • SSE2 - SSE4.2 Compatibility

    - by Jim Fell
    Hello. I am considering the purchase of some software (AutoCAD) that requires the CPU to support SSE2. My PC's CPU is an Intel® Core™ i5-650 Processor, which supports SSE4.2. Basically what I am wondering is if SSE4.2 is simply a newer version of SSE2, so that it would be fullly backwards compatible. Thanks.

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  • Debugging IO limitation

    - by Martin F
    I have a Fedora box with some severe IO limitations which I have no idea how to debug. The server has a Areca Technology Corp. ARC-1130 12-Port PCI-X to SATA RAID Controller with 12 7200 RPM 1.5 TB disks and a Marvell Technology Group Ltd. 88E8050 PCI-E ASF Gigabit Ethernet Controller. uname -a output: 2.6.32.11-99.fc12.x86_64 #1 SMP Mon Apr 5 19:59:38 UTC 2010 x86_64 x86_64 x86_64 GNU/Linux The server is a file server running Nginx with the stub status module enabled, so I can see the current amount of connections. The problem present itself when I have a high number of simultaneous connections in a writing state. Usually around 350, at this very moment it's at 590 and the server is almost unusable and stuck at 230mbit/s. If I run stop and hit 1 to see CPU core usages I have all 4 cores with around 99% io wait, if I run iotop the nginx workers are the only processes producing any read load, currently at around 25MB/s. I have each of the workers bound to their own core. Initially I figured it was just the disks being bugged. But I've run fscheck and smartmontools checks and found no errors. I also ran an iozone test which you can see the result of here: http://www.pastie.org/951667.txt?key=fimcvljulnuqy2dcdxa Additionally, when the amount of connections are low I have no problem getting a good speed. If I wget over the local network it easily hits 60MB/sec. Right now I just tried putting a file in /dev/shm, then I symlinked a file from the public dir to it and used wget over the local network and only got 50KB/s. Also, if I try to cp /dev/shm/test /root/test it quickly copies around 740MB and then slows down HEAVILY. Again with iotop reporting 99% iowait. I'm not really sure how to go about figuring out what the problems are. It could be a natural disk limitation but then the file from /dev/shm ought to transfer so it seems there's a network limit, but that's fine when there's not many connections. Perhaps it's a TCP stack problem but I really have no idea how to check that. Any suggestions on how to proceed with debugging would be very welcome. If additional information is required then let me know and I'll try to get it. Thanks.

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  • PHP execution timing out after update

    - by Danten
    Originally posted on stackoverflow, but I think it'd be more appropriate here. Needed Finfo but deleted msi package, so uninstalled php 5.3.0, downloaded 5.3.2 and installed. Now all my sites have spurious errors and execution time outs. Originally updated with VC9 build but then realised error and updated with VC6 (with same problem). Example error: Warning: PDO::__construct() [pdo.--construct]: [2002] A connection attempt failed because the connected party did not (trying to connect via tcp://localhost:3306) in ...Core.php on line 60

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  • Force10 layer 3 switches

    - by ALQ
    We've been running Cisco and dell layer 3 switches. The former are expensive and reliable, the latter a lot cheaper and fraught with issues. Anyone has positive experience with the core Force10 switches (and edge switches as well)?

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  • Wireless mouse keeps freezing when using whole network bandwidth

    - by Ümit AKKAYA
    Hi i have wireless mouse and keyboard connected to pc with USB receiver. When i downloading something without limiting download speed, mouse and keyboard keep freezing randomly. Mouse : Microsoft Wireless Mouse 5000 Keyboard : Microsoft keyboard 3000 v2 Chipset : Intel HM65 Processor : Intel Core i7 2670QM @ 2200MHz Physical Memory : 8192MB (2 x 4096 DDR3-SDRAM) OS : Win 7 x64 Note : The solution described in http://superuser.com/a/309622/157168 not helped.

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  • Question about Installing an Intel E5300 CPU.

    - by jeff
    Can I re-use my heatsink/fan that is currently on the motherboard with this new Intel e5300 CPU ? I know both CPUs are socket 775 based CPUs. I have a 2.4 GZ single core Intel chip currently. Also would I be able salvage the thermal paste or should I just buy new paste?

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  • Nagios SSH remote checks and WMI Check

    - by jenglee
    I have install Nagios Core and I am using WMI Checks for Windows and Created a script to execute remote commands through ssh on my Linux machines. When Installing Nagios there is an option to run NsClient++, but I went with the WMI Checks because it is agent less. What are the advantages of using NsClient++ for Nagios? Also would calling too many commands through WMI or SSH hinder the performance of the remote host?

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  • Identifying Hard Drive as performance bottleneck for desktop machines

    - by Programming Hero
    I'm working in a development team where we all use laptops so we can work in multiple locations. These laptops are proving notoriously slow for development work, but at a glance they all look to have the specification for a much faster experience: CPU - Intel Core 2 Duo T7500 Memory - 2GB of RAM We all experience the biggest delays when the hard-drives are being accessed, particularly when swap-files are being thrashed. After doing a little bit of profile, a colleague discovered that our HDDs are seeing Read/Write speeds of about 10MB/sec. This seems abnormally low and we believe it the cause of the problem. Sensibly (though somewhat annoyingly) our business wont blow money on faster drives just to see if it fixes the problem; we need to illustrate this is definitely the problem and that buying some solid-state drives will make it go away. I need some way of showing how 90% of the system resources aren't being used over the course of a day, and that whenever there is utilization, it's all in HDD reads or writes. Are there any tools I could use to provide this information? Does it seem likely the problem is going to be fixed by a faster drive? Should I be looking for alternatives?

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  • Is it possible to set Windows Authentication on a subfolder of a site having only anonymous authenti

    - by Lieven Cardoen
    If I try to do that, I get following error: HTTP Error 401.2 - Unauthorized You are not authorized to view this page due to invalid authentication headers. Module IIS Web Core Notification AuthenticateRequest Handler PageHandlerFactory-Integrated Error Code 0x80070005 If I convert the subfolder to an application, it does work, but is it possible without converting it to an appliation? If you deploy such a site, will this subfolder automatically be an appliation or is this information kept in IIS7?

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  • ln -s not working under /mnt/

    - by Yaniv
    Hi all I'm following this tutorial to set up a LAMP stack on EC2 with persistent storage on EBS. It all works well when doing it step by step. But in case you want to mount your EBS under /mnt instead of under the root directory the ln -s commands won't work! I tried: ln -s /mnt/ebs1/httpd /etc and: ln -s /mnt/ebs1/httpd /etc/httpd Is there a difference when linking to a file on a device that is mounted under /mnt? (working on fedora core 8)

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  • Sever 2008R2 404 - cannot load basic HTML file

    - by user66827
    Hello, I have a fresh Server 2008 R2 installation that cannot load a basic HTML or ASP file. I can however load .jpg and .gif images, so I know the file paths are setup correctly. ModuleName IIS Web Core Notification 16 HttpStatus 404 HttpReason Not Found HttpSubStatus 0 ErrorCode 2147942402 ConfigExceptionInfo Notification MAP_REQUEST_HANDLER ErrorCode The system cannot find the file specified. (0x80070002) Not sure what this is, any ideas?

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  • Running Hermes Anti-Spam Proxy Alongside Exchange 2003

    - by JohnyD
    I'm looking to implement an anti-spam solution to pre-process email destined for my Exchange 2003 server. I am interested in trying out the Hermes Anti-Spam Proxy product (the price is right) and was wondering if anyone has had any experience in running this alongside their Exchange installation (same physical box). The server is a Win2K3 box running a single core P4 D 930 @ 3GHz with 3 gigs of memory. Thank you.

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  • Does the Noctua NH-U12-DX 1366 cooling system mount on Asus P6T 1366?

    - by Andrea Ambu
    The Noctua NH-U12-DX 1366 is an aftermarket CPU cooler for LGA1366 Xeon CPUs. On Noctua's site they state: Caution: The NH-U12DX 1366 can only be used on mainboards that have a backplate with screw threads for CPU cooler installation (such as the Intel reference backplate for Xeon 5500). The cooler is thus incompatible with Xeon 3500 and Core i7 mainboards that don’t have such a backplate. How do I know if the Asus P6T has this backplate?

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  • SConfig - option 12). restore graphical user interface - not present

    - by NickC
    Started off with a Server Core install to which I then added the GUI with: Install-WindowsFeature Server-Gui-Shell, Server-Gui-Mgmt-Infra So far so good, I then removed the GUI again to get back to text only mode with: Remove-WindowsFeature Server-Gui-Shell, Server-Gui-Mgmt-Infra Now at this point I should beable to use SConfig option 12 to reinstall the GUI again but that SConfig option is missing: "12) Restore Graphical User Interface (GUI)" not present, how can I get SConfig to display this option? Has anyone else noticed that this option is missing. Thanks, Nick

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  • Crashes and freezes after fixing "BOOTMGR is missing" error

    - by Greg-J
    I came back from a 3-day weekend to a computer that was off. I leave my PC on 24/7, so this was odd. Turn it on to get the dreaded "BOOTMGR is missing" screen. Two attempts at Windows Recovery and it booted into Windows fine. After an hour or so, I get a frozen Chrome and my start bar disappears. Ctrl+Alt+Del brings up an error box telling me that Ctrl+Alt+Del failed to work properly. Clicking on any open application triggers an error (I can't recall the error now, but it essentially just said that the application couldn't be found running or something along those lines). I restart, and again, the same thing happens after a while of use. I turn it on, install the 47 updates I have or so, and then restart it. After a while of use (under an hour), it just freezes completely. My thoughts are: SSDs, RAM or PS. My system specs below: (RAID0) 2 x Crucial M4 CT128M4SSD2 2.5" 128GB SATA III MLC Internal Solid State Drive (SSD) CORSAIR Vengeance 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model CML16GX3M4A1600C9 CORSAIR HX Series HX750 750W ATX12V 2.3 / EPS12V 2.91 SLI Ready CrossFire Ready 80 PLUS GOLD Certified Modular Active 1 x ASUS Maximus IV Gene-Z/GEN3 LGA 1155 Intel Z68 HDMI SATA 6Gb/s USB 3.0 Micro ATX Intel Motherboard 1 x Hitachi GST Deskstar 7K1000.C 0F10383 1TB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive 1 x Intel Core i7-2600K Sandy Bridge 3.4GHz (3.8GHz Turbo Boost) LGA 1155 95W Quad-Core Desktop Processor Intel HD Graphics 1 x SAPPHIRE 21197-00-40G Radeon HD 7970 3GB 384-bit GDDR5 PCI Express 3.0 x16 HDCP Ready CrossFireX Support Video Card 1 x Noctua NH-D14 120mm & 140mm SSO CPU Cooler This is all crammed in a pretty small case (NZXT Vulcan) and has been running perfectly problem-free since January. The only thing out of the ordinary is that there is a fan in the case that is now making noise whereas the case has previously been completely silent. I have no reason to believe this is anything more then correlation, but felt it is worth mentioning. I believe it MAY be the SSDs simply because of the BOOTMGR error, but not sure how to test that theory. My belief that it may be the RAM is simply from experience with frozen machines. I haven't had the time to memtest it, but will. The PS being the culprit is something I've picked up by reading similar threads on various forums, and it seems plausible. I am unsure how to test this though. ANY insight whatsover would be greatly appreciated!

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  • Are there any advantages to using windows 7 ultimate? I can't tell the diference

    - by Jack Dawson
    I just upgraded my new desktop which came installed with Windows 7 Home Premium 64 bit with a copy of Windows 7 Ultimate 64 bit and so far I have not noticed any difference in performance. Even my Windows Experience Index number is the same 5.5 that it was before the upgrade. So what's the point, are there any performance advantages that I'm not seeing? Additional Info My system hardware specs: AMD quad core 2.6 GHZ 1 TB 4200 RPM HDD 8 GB DDR2 RAM ATI Radeon HD 4650 w/ 1GB dedicated video memory

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  • Adobe premiere CS5 problem with the display driver

    - by user30179
    This error is really hindering our project. I get an error, it started showing-up June 16th 2010. There are no windows updates at the on the same date as the error, other than (Windows Defender) Seems to happen when working with Image overlays. ERROR: "The NVIDIA OpenGL driver detected a problem with the display driver and is unable to continue. The application must close." We opened the side of the case in the possibility there is an over heating problem. Nvidia Driver ver 8.16.11.9175 (nVidia Quadro FX 1700) I am running: Windows 7 x64 Adobe premiere CS5 Production nVidia Quadro FX 1700 (MRGA14L) 4 Gig ram RAID 10 2 750GB drives Duo core 3.0 6MB L2 Cache This is at least three other people that have come across this error: NVidia Forum EVGA Forum NVidia Forum UPDATE: Having the case open did not help. I also installed New Nvidia drivers now I get a different error: *ERROR:*Your hardware configuration does not meet minimum specifications needed to run the application. The application must close. I ran Windows Update and installed all four updates so now I am waiting to see if the error occurs again. Anything beyond this I am out of options.

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  • Adding an assembly to the GAC

    - by Cyclone
    Somehow my GAC got messed up, System.Core.dll was unregistered or something. I don't have the win7 sdk so I can't just use gacutil. Is there some way I can add the single assembly to the gac? Or some way to download JUST gacutil? Is the GAC stored in the registry? If so, where? Thanks for the help, this is a pretty ugly bug.

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  • Does Gigabit degrade all ports to 100 megabit if there is a 100 megabit device attached?

    - by hjoelr
    Our company is buying some HP Procurve managed gigabit switches to replace some of our core switches. However, we aren't able to upgrade all of our switches from 100Mb to Gigabit switches. I think I know the answer but I'm not exactly sure. If we plug those 100Mb switches (or even a 100Mb device) into those Gigabit switches, will the performance of the entire switch drop to 100Mb or will just that one port work at 100Mb?

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  • Planning trunk capacity for multiple GbE switches

    - by wuckachucka
    Without measuring throughput (it's at the top of the list; this is just theoretical), I want to know the most standard method for trunking VLANs on multiple Gigabit (GbE) switches to a core Layer 3 GbE switch. Say you have three VLANs: VLAN10 (10.0.0.0/24) Servers: your typical Windows DC/file server, Exchange, and an Accounting/SQL server. VLAN20: (10.0.1.0/24) Sales: needs access to everything on VLAN10; doesn't need access to VLAN30 and vice-versa. VLAN20: (10.0.1.0/24) Support: needs access to everything on VLAN10; doesn't need access to VLAN20 and vice-versa. Here's how I think this should work in my head: Switch #1: Ports 2-20 are assigned to VLAN20; all the Sales workstations and printers are connected here. Optional 10GbE combo port #1 is trunked to L3 switch's 10 GbE combo port #1. Switch #2: Ports 2-20 are assigned to VLAN30; all the Support workstations and printers are connected here. Optional 10GbE combo port #1 is trunked to L3 switch's 10 GbE combo port #2. Core L3 switch: Ports 2-10 are assigned to VLAN10; all three servers are connected here. With a standard 10/100 x 24 switch, it'll usually come with one or two 1 GbE uplink ports; carrying over this logic to a 10/100/1000 x 24, the "optional" 10 GbE combo ports that most higher-end switches can get shouldn't really be an option. Keep in mind I haven't tested anything yet, I'm primarily moving in this direction for growth (don't want to buy 10/100 switches and have to replace those within a couple of years) and security (being able to control access between VLANs with L3 routing/packet filtering ACLs). Does this sound right? Do I really need the 10 GbE ports? It seems very non-standard and expensive, but it "feels" right when you think about 40 or 50 workstations trunking up to the L3 switch over 1 GbE standard ports. If say 20 workstations want to download a 10 GB image from the servers concurrently, wouldn't the trunk be the bottleneck? At least if the trunk was 10 GbE, you'd have 10x1GbE nodes being able to reach their theoretical max. What about switch stacking? Some of the D-Links I've been looking at have HDMI interfaces for stacking. As far as I know, stacking two switches creates one logical switch, but is this just for management I/O or does the switches use the (assuming it's HDMI 1.3) 10.2 Gbps for carrying data back and forth?

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  • Clean thermal paste from touch contact points on the underside of the CPU

    - by Karolinger
    I bought an used CPU (Intel "Core 2" E4700) on eBay and it came with the underside dirty with something that seems it´s thermal paste. Before I send it back, I wonder if it could it still work without cleaning this dirt because the seller supposedly "tested" it to be fully working. Final, is there a way to clean this dirt without damaging the CPU? Or, is it too risky (or too much work) to do so? This is the CPU:

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