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• Offer me an ASP.NET & a SQL Server 2008 server specifications for about 2000 concurrent users, please.

  - by amkh

  We have a web application project wich will be created using ASP.NET 4.0, Entity Framework, and SQL Sever 2008 R2. To meet the needs, suppose a normal page of this application that has a query which it takes 10 miliseconds to response on a Core2 Quad @ 2.8GHz proccessor with 2x2GB of DDR3 Ram (EntityFramework overheads are considered). And we will have about 2000 concurrent user at peek times. So, what is the best recommended specifications (CPU/RAM/RAID/...) for the server which will be host this application? -- Or -- How can I calculate that?

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• Windows freezes, showing a random color or pattern

  - by Manu

  I have a PC with windows 7, and I'm experiencing random freezes with increasing frequency. After some time (from 30 minutes to a few hours) the screen will shows a random color or pattern (vertical lines) and nothing works anymore, I need to reboot manually. I've checked the events log, but nothing is shown except for the unexpected reboot. I've tested the RAM with Memtest86+ 4.20, and the graphics card with FurMark 1.10.3, no errors have been found. I've updated the graphic drivers and openned the case to remove dust, but the issue is still there. Also, the problem doesn't seem to arise when I'm playing games fullscreen, but when I'm surfing the web, using itunes, or coding. My hardware is as follows : intel core i5 750 CPU, ATI Radeon HD 5670 graphics card, ASUSTeK P7P55D motherboard, two 2Gb KINGSTON DDR3 ram sticks, 2 SATA hard drives, a Netgear dongle for wifi.

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• HP Pavillion dv6 laptop - 15 beeps on startup and a black screen?

  - by dunc

  Usual story - girlfriend's step-brother's laptop is broken. I don't know a huge amount about what occurred before it broke, but I do know the following: When you try to turn the laptop on, it beeps 15 times exactly. The screen remains black. The LED on the Caps Lock key flashes continuously. If left on, the laptop never boots - as far as I can see. If left on, on a stable surface with decent ventilation for a relatively short period of time, the laptop (below keyboard, but not where the RAM/HDD are) gets very hot. I've tried doing what most websites appear to recommend for similar problems, which is to disconnect AC and battery then hold the power button down for a minute before reconnecting the AC and trying to turn the laptop on - no difference. EDIT I've also tried re-seating the RAM, to no avail. Any ideas? Thanks in advance,

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• Excel 2010 -Excel cannot complete this task with available resources

  - by Jestep

  Getting this error when trying to sort a document (Excel cannot complete this task with available resources). Document isn't particularly large, about 4,000 lines. Can't seem to figure out why this would start on this. I can sort this same file fine on everything back to Excel 2000 on older crappy computers. Computer is running Win 7 x64, 16 Gb RAM, and another 16 Gb of virtual. There's no possible way that all of the memory is actually getting exhausted when I can perform this on an older XP machine with 512 Mb of RAM, unless 2010's memory usage is inconceivably poorly designed. I found a few posts on forums stating that there might be a security update related bug. Any suggestions would be appreciated.

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• What is the maximum memory that an IIS6 web site/app pool can use?

  - by Robin M

  I have an IIS 6 server running on Windows 2003 SP2 x86. The server has 4GB of RAM and runs consistently with 2GB allocated. I realise that with x86, the server won't utilize all of the 4GB RAM and the application space is also limited but the IIS processes seem to be limited elsewhere. w3wp.exe never has more than 500MB allocated and I occasionally get OutOfMemory exceptions from a busy .NET application (there are several applications running, each with a separate application pool). What is the maximum memory that an IIS6 web site/app pool can use?

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• Building a workstation computer for Image processing? [closed]

  - by echolab

  I am taking a gigapixel image my goal is 50gigapixel and shooting is almost done , i am doing some research to build a workstation so i can stitch images together , my questions is ! Could u suggest some dual cpu mainboard that works fine with xeon 5500+ , with 64GB+ ram support ? My other question is which hardware is most important in image processing , all i see in story of gigapixel panoramas is they have dual xeon and 32gb+ ram ? i wonder if i am doing this right , i mean they don't post information on graphic card , mainboard and stuff ! I did asked several websites , but nothing best answer was get some high-end workstation and plenty of hours , i don't want to purchase ready to use workstations, i wanna build it up Thanks in advance

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• What's better for deploying a website + DB on EC2: 2 small VM or a large one?

  - by devguy

  I'm planning the deployment of a mid-sized website with a SQL Server Standard DB. I've chosen Amazon EC2 to deploy it. I now have to choose between these 2 options: 1) get 2 small instances (1 core each, 1.7 GB of ram each): one for the IIS front-end, one for running the DB. Note: these "small instances" can only run the 32-bit version of Win2008 Server 2) a single large instance (4 cores, 7.5 gb of ram) where I'd install both IIS and the SQL Server. Note: this large instance can only run the 64-bit version of Win2008 Server What's better in terms on performance, scalability, ease of management (launch up a new instance while I backup the principal instance) etc. All suggestions and points of view are welcome!

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• Hardware specs for web cache

  - by Raj

  I am looking for recommendations for hardware specs for a server that needs to be a web cache for a user population of about 2,000 concurrent connections. The clients are viewing segmented HTTP video in bitrates ranging from 150kbps to 2mbps. Most video is "live" meaning segments of 2-10 secs each, of which 100 or so are maintained at a time. There are also some pre-recorded fixed length videos. How would I go about doing the provisioning calculation for such a server: What kind of HDD (SSD?), how many NICs how much RAM etc? I am thinking of using Varnish on Linux, all the RAM I can get my hands on, 2 CPUs with 6-8 cores each.

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• games and movies become too slow after some time

  - by ishaq

  On my gaming desktop, I was fixing my desktop's power supply when something seemed to burn (I got that stinging burning smell). However when I turned ON the computer (it was OFF before), everything seemed to be fine. However, I have noticed that now it becomes too slow if I play a game or movie on it. I am talking about the computer becoming painfully slow after about 5 minutes into the movie/game (it works fine otherwise e.g. browsing), it becomes so slow I can see individual frames from movies/games. What could be the problem? A fried video card? friend memory (RAM), something else? My system's configuration is: Intel Core i7 CPU 3.40GHz 8GB DDR3 RAM 2TB WDC HDD NVIDIA GeForece GT 220 (1GB) Thermal Take Commander MS1 Chassis ( http://www.thermaltakeusa.com/Product.aspx?S=1394&ID=2051 ) mainboard: Intel DH67CL AAG10212-208 Realtek High Definition Audio

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• How many nginx/fastcgi processes do you use?

  - by qliq

  I have a drupal-based website on a VPS with 1GB RAM and 1Ghz processor share. The webserver is nginx along with php-fastcgi. Currently I am using 10 nginx and 13 php-fastcgi processes. The server load is high most of the times while half of the RAM is unused. The CPU usage rarely reaches 80%. I have tried some other combinations of nginx/php-fastcgi but am not sure what is the optimal combination because I am quite ignorant about what's going on below the surface. So I appreciate if you could share your experience or give me some clues.

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• Any ramifications to disabling ClearPageFile

  - by user34710

  I am runing a Dell XPS 15z with a quad core I7, 8gb ram, 7200rpm hdd, windows 7 ultimate. My laptop was taking around 3 minutes to shut down, which seemed far too high to me. I did a bit of investigation, and it seemed that the ClearPageFile reg entry was set to 1, meaning that upon shutdown my pagefile.sys was being cleared before actually shutting the machine down. When I disable this setting, my laptop shuts down in about 20 seconds - clearly a big gain. My question is, are there any side effects of having this turned off (other than the security risk of the HDD being stolen, and still having any important info that was in the RAM up for grabs)?

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• Why am I having trouble loading Ubuntu alongside Windows as an application?

  - by STEVE PEAVEY

  I have two good CD ISO files. Both load OK, but when I boot to Ubuntu the screen is fragmented by dozens of white lines. Program works but is useless. I'm running Windows XP SP3 on D201GLY MB, CELERON CPU 220 1.02 GHZ, 512 RAM What could be my problem? CPU? Not enough RAM? Or maybe even the graphics card? to be clearer i am trying to load either ubuntu 8.04 or 9.04 inside windows as an aplication from known GOOD cd's. trying to load with the wubi installer that is loaded on the cd's. sis mirage graphics 32mb vid prosser sis 662.

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• Should I bother upgrading my Opteron 270 Server?

  - by MousePad

  I have an Opteron Server machine (in a large workstation class case) running on the Tyan 2895 motherboard. It's a dual CPU socket board, but I only have one 270 in there. I have 4GB of RAM, but less than 3GB is addressable, even in 64bit mode, due to the way the board is designed. Is it worth spending a few hundred on an additional CPU and maybe some more RAM? The other problem is that one of the two SATA ports on the board had its wire socket break off. So only one drive can be run as of now. I could have it repaired, but at what cost? Add in the fact that the power supply is gunked up with dust and it's a bit of a nightmare. I actually work about it getting too hot. Seems that for the money I could buy a new server rack from Dell, but it also seems a shame to waste an otherwise working, and for my needs still very fast machine.

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• Which motherboard for Intel i7 and how to get RAID working?

  - by jasondavis

  I am wanting to build a new PC, I have a couple questions. 1) I am wanting to go with the Intel Core i7 920 Processor, can anyone reccomend a good reliable motherboard for this processor? Graphics card support does not matter (sli-crossfire). I would like to support a lot of ram, so the more ram slots the better. I have read so many bad reviews about certain boards not working good, I would love recommendation from experience. 2) I am wanting to run a couple SSD drives in RAID-0, I have never done this, will I need to purchase anything additional to the MB and CPU and drives to get raid working?

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• Boot.ini on Windows Server 2003 R2

  - by Jason H.

  I have a Windows Server 2003 R2 with 48 GB of RAM; server has been running strong for quite some time. Recently our boot.ini was modified causing issues, most likely by our remote administrators. Now the server is only showing 14 GB of RAM. This has caused major performance issues for our end users. Our remote administrators have stated "we don't change the boot.ini settings(switches)". However, I know for a fact that all of the local administrators have not modified the switches (due to lack of permissions). The real question.. Is it possible to "audit" who has modified the boot.ini? If thats not possible, can the boot.ini be set via startup? Any help would be greatly appreciated. This is an ongoing issue that I would love to resolve.

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• After installing Windows 8, boot hangs before BIOS setup

  - by Joe Purvis

  I have an Alienware M15x, 940MX processor, 16 GB RAM, 512GB M4 SSD, and I was running Win7 64bit. I backed up the disk and ran Win 8 setup. Setup appeared to go well through multiple reboots. After the last reboot, it simply stopped after POST at "Press F2 for bios setup". I have tried powering off, reducing RAM to one stick, removing MOS battery. Now, it gets to the screen with "Press F2 for setup" and "Press F12 for boot options". If I press F2, I get a single beep only. If I press F12, nothing. I cannot get into the BIOS to change boot options to boot from another disk and restore. I do have the latest BIOS. I am going to try replacing the CMOS battery, but I don't think that is likely to help. The computer has been fast and very reliable until now.

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• 8GB, but have to run Windows Xp (32 Bit). Anything I can do with the additional memory?

  - by user12889

  I ordered a new computer with 8GB RAM with the plan to run Windows 7, 64Bit. Turns out now, that I need to run a 32Bit OS (XP or 7) due to some software which does not run on 64Bit yet (not even with any of the available compatibility settings / modes). Is there anything I can do with the memory above 4GB in this scenario? I'm willing to consider creative solutions like running a hypervisor under XP that offers the memory as a RAM-Disk for swapping etc. ? The software that does not run on 64Bit is CISCO VPN (there seems to be a half-working solution for that) and CISCO IP phone / webcam integration "CISCO Unified Video Advantage" (there is apparently no solution for that).

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• Server Sizing Methodology

  - by adbrpc

  Our development environment consist of JBoss 5.0.1 DB Server, SQL Server 2008, Oracle IDM. Hardware is Win 2008 32 bit, 4GB RAM. We have reached stage where our environment can not handle application resulting in JBoss shut down throwing out of memory errors and CPU reaching to 90% usage. I am looking methodology to calculate correct server sizing where I input TPS, max number of concurrent users, max CPU utilization etc.. to give me number of servers, RAM size, number of cores. I am expecting application to grow 10% annually. Load Balancer and Failover should also be taken in account while sizing.

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• Can most Intel processors run 64-bit Windows 7?

  - by Jian Lin

  Can most Intel processors run 64-bit Windows 7? Such as all the i7, i5, Core 2 Duo, Dual Core, Single Core with HT, and even just Single Core? I think a popular view is that if you can run 64-bit Windows 7, then use it? It might have driver compatibility issue but if there is no device hooked up, then there is no problem? What about some software / games not compatible with the 64-bit version or may run slower? thanks. update: a couple of my machines have 4GB RAM. so 64-bit Win 7 can make use of the full 4GB RAM instead of only about 3.2GB

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• Performance problems - Jira running on Ubuntu over VMware ESX 4.0 maxing out all 4 vCPUs.

  - by Jack T

  We are running Jira on a box under VMware ESX 4.0 and performance is vaiable to say the least. The physical box has 12 Gig RAM and 4x Xeon 2.26 GHz CPUs. vCentre is telling us the CPUs are not maxed out at any time, RAM is fine too. When we issue a request to the host it sometimes maxes out all 4 vCPUs. Sometimes it's quick, sometimes very very slow. There doesn't seem to be a pattern. Any ideas?

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• KVM vs Hyper-V. Which hypervisor is best for windows guests?

  - by user198851

  I am currently testing openstack for windows guests (XP and 7). I have deployed openstack "all in one" on system with following specs Processor corei5. (4 physical cores and 8 Threads with HT Technology) RAM 8 GB. HD 500 GB. I have created 4 windows xp guests with 512MB RAM and 1VCPU. On each windows guest i have installed visual studio 2008 only. In nova.conf CPU Over-Commit ratio is 2 for better performance (as mentioned in openstack operation guide). Using KVM as hyerpvisor. I have observed poor performance when simultaneously using visual studio in four windows instances. How i can improve performance ? Should i use KVM or Hyper-V ? or any other suggestion ?

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• Which type of memory is faster than average for server use?

  - by Tony_Henrich

  I am building a server computer which will be used for SQL Server and I am planning to use like 32G+ of RAM and putting the databases in memory. (I know all about data loss issues when power is gone). I haven't been up to date with the new types of memory sticks out there. What kind of memory should I get which is faster than average and not very expensive? I am buying a lot of ram so I am looking for memory that's above average but below high end if high end is very expensive. (I will be using Windows Server 2008 R2 Standard or Windows HPC Server 2008 R2)

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• bluray playback stuttering/choppy on mac

  - by smashtastic

  I have had a few issues with bluray playback on mac with the following details: 2.4 GHz Core 2 duo NVidia 8600 m GT 256 mb ram 4 GB ram OSX Lion 10.7.5 Using VLC 2.03 for playback Files either mounted as a disc or stored on hardisk. I have tried various sources and playback is always choppy and stutters. Where the video and audio pause for a few seconds before resuming ok. If I transcode the same bluray files into mkv files play back is seemless. I am not applying any compression and the resolution is the same as is the nominal file size. For a recent example 11.2 GB m2ts and 10.5 GB mkv file. This stuttering and choppy playback of bluray files through VLC has occured for a number of different sources. For each of these sources transcoding to mkv solves the stuttering/choppiness. Any ideas on how to resolve this?

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• System statistics in Ubuntu

  - by John Kube

  Is there an easy way in Ubuntu to show the specifications of the computer, such as RAM, the kind of processor, graphics card, etc.?

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• Mac OS X: What is using my 'active' memory?

  - by badkitteh

  Hello fellas, I'm using a recent MacBook Pro with 8 GB of RAM and after a few hours of using it at work I notice the amount of 'active' memory growing and growing. Whenever I reboot my Mac, everything looks fine and it is hardly using any RAM. But after a few hours it looks like this: As you can see, in this case it's about 4.3 GB. Being a developer, I know that 'active memory' is the amount of memory that is currently used by running processes. So the first thing I did was quitting all applications and killing all processes that don't seem to belong to Mac OS X. After I did that, my active memory came down about 400 MB, but got stuck at what you see in the screenshot. There are no more processes or applications to quit. Now I'm wondering what is actually holding on to the memory? top and Activity Monitor don't report any processes with a high memory usage. Any ideas? Thanks!

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