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• Buffer Overflow errors when reading ConfigDelay and Manufacturer info from registry

  - by peter

  Hi All, This is a strange driver error which doesn't make a lot of sense to me. I am running an application developed in C# .NET which our company develops. I was monitoring the application using process monitor and noticed that it accesses the registry a lot. The output on Process Monitor looks like this, Operation Result Path RegQueryValue Success HKLM\System\CurrentControlSet\Enum\SWMUXBUS\SW_MODEM\7&6c4af30&0&5&0004\Driver RegQueryValue Success HKLM\System\CurrentControlSet\Control\Class\{4D36E96D-E325-11CE-BFC1-08002BE10318}\0000\Properties RegQueryValue Success HKLM\System\CurrentControlSet\Control\Class\{4D36E96D-E325-11CE-BFC1-08002BE10318}\0000\Default RegQueryValue Success HKLM\System\CurrentControlSet\Control\Class\{4D36E96D-E325-11CE-BFC1-08002BE10318}\0000\InactivityScale RegQueryValue Name Not Found HKLM\System\CurrentControlSet\Control\Class\{4D36E96D-E325-11CE-BFC1-08002BE10318}\0000\PowerDelay RegQueryValue Name Not Found HKLM\System\CurrentControlSet\Control\Class\{4D36E96D-E325-11CE-BFC1-08002BE10318}\0000\ConfigDelay RegQueryValue Buffer Overflow HKLM\System\CurrentControlSet\Control\Class\{4D36E96D-E325-11CE-BFC1-08002BE10318}\0000\Manufacturer RegQueryValue Buffer Overflow HKLM\System\CurrentControlSet\Control\Class\{4D36E96D-E325-11CE-BFC1-08002BE10318}\0000\Model RegQueryValue Name Not Found HKLM\System\CurrentControlSet\Control\Class\{4D36E96D-E325-11CE-BFC1-08002BE10318}\0000\Version The app is reading this stuff every 5 seconds from the registry, so I would ask a few questions, 1) What is this stuff 2) Why is the app reading this stuff 3) Why is it saying 'Buffer Overflow' 4) Could this cause performance problems for my app? From what I can see the app does not explicitly read this stuff, so I think this relates to a driver on the machine (which is a netbook)

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• Long access time for static web page on virtual machine

  - by Karol

  My setup Windows 7 on workstation that I use at work (with domain) and home (no domain) Virtual machine (VMWare) that runs Arch Linux (I will call it just "Linux") with network interface in bridged mode. Linux serves web pages with Nginx. IP address of Linux machine is 192.168.0.16 and is added to C:\windows\system32\drivers\etc\hosts: 192.168.0.16 bridged bri IP address of Windows workstation is added to /etc/hosts: 192.168.0.10 workstation I can add more details to my setup description (I am not sure what is relevant). The question Often (but not always) it takes long time for a web browser (Firefox) to open static web page served by Linux. I am sure it is not a performance issue. To be more specific: it takes about ~20 seconds to resolve(?) the address http://bridged for a web browser. Additionally I have just installed samba service and noticed similar problem, so it is not specific to browser & http. Initial access for samba shares also takes long time.

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• Optimal Networking Setup for a 2-Story unit?

  - by user29336

  I am moving into a 4 bedroom two-story unit. It’s roughly 2,200 sq ft. I want absolute max throughput possible to be achieved in all focal points. We’re all in internet related industries. Between gaming and web-development latency and throughput are major factors for us. Here’s our main focal points: 1) Garage (office). downstairs 2) Each bedroom x4. upstairs 3) Living room. downstairs The fastest line we can get is Comcast 50mbdown/5up (Wideband). I am looking for the best way to achieve wireless and wired performance for our setup. Our gaming computers may be in our bedroom, and we also may bring it down to the office every now and then for “LAN” sessions. Most wireless will be happening downstairs with our laptops, but since we may do LAN sessions then hard wired latency may be important there too. My concerns: If we do only wireless there would be too much latency for gaming. I don’t know if placing one D-link DGL 4500 on the top floor would be enough; which I currently own. (http://dlink.com/us/en/home-solutions/support/product/dgl-4500-xtreme-n-gaming-router) As far as I’m aware wireless signals transfer best top down. Would this wireless router be enough on top floor and that’s it? My second strategy was a combination of wiring and wireless but I’m not sure what’s easiest way to do this? This is a place we’re renting, so I’m not sure how much leeway we have with wiring, but we’re all pretty competent... if we can’t drill through a wall we can probably “stitch” them across the edges wherever needed. Thoughts on the optimal way to do this?

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• How could Load average numbers from 'htop' exceed 100% CPU utlization?

  - by Joe Huang

  I use 'htop' to monitor my web server. It's recently quite loaded and the Load average is showing something like this: Load average: 3.10 2.56 1.63 I searched the web about these numbers and I found an article about it: http://blog.scoutapp.com/articles/2009/07/31/understanding-load-averages In the article, it says if I have 2 CPUs, 2.0 means 100% CPU utilization. And my VPS has two CPUs, so what does 3.1 mean? How could it exceed 100% CPU utilization? And from these numbers, does it mean I should be wary about the loading now? But the performance seems totally fine, and this is a managed VPS, the hosting company has not notified me any warning about it. During day time, Load average always show these high numbers... here is another snapshot while writing. Load average: 3.03 2.77 1.97 Load average: 0.41 1.29 1.60 <---- 5 more minutes later So I am wondering how much room left for this site to grow in current configurations? What kind of proactive actions I should take in advance? I don't want to wait until the server bursts. Thanks.

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• Representing server state with a metric

  - by Sal

  I'm using Microsoft's Performance Monitor to dump logs of RAM, CPU, network, and disk usage from multiple servers. I'd like to get a single metric that captures the state of a given variable to a good extent. For instance, disk usage is pretty stable, so if I take a single reading that says I have 50% remaining disk space, that reading will give me an accurate measure for the day. (The servers aren't doing heavy IO writing.) However, the tricky part here is monitoring CPU and network usage. The logs currently dump the % CPU usage every ten seconds. If I take a straight average of the numbers, it may not represent reality, as % CPU will be much lower during the night than day. (We host websites that sell appliance items.) I'd like to get an average over a span during peak hours (about 5 hours in the day) and present a daily peak hour metric. Of course, there are most likely some readings that will come in as overly spiked (if multiple users pinged the server at once) or no use (a momentary idle state). Is there a standard distribution/test industries use in these situation?

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• What Wireless Router/ADSL Modem to get? N-band a must!!

  - by JJarava

  I'm looking for a Dual-N band Router OR ADSL Gateway and I'd like some recommendations. Situation: I have a 802.11b/g ADSL gateway provided by my telco, but the WIFI signal won't cover all the house (especially the living-room, so my tv-connected Mac Mini has poor to no internet access). So I'm looking to either replace the DSL modem with a N-enabled one, or to add a Router to the mix. I've had a modem+router setup for many years, and I know the advantatges (double NAT, double FW = more security) and issues (more complex to troubleshoot, two possible points of failure), so I'd rather live with a single (ADSL Gateway) device, if possible. Requirements: Dual-N Band (300 Mbs WIFI) 1 GB Ethernet ports ADSL2+ support (if it's a ADSL gateway, which would be desirable) "Best" range and speed possible Nice to have: USB port to share disks/printers on the network Media streaming I've been a long time user of Linksys, so googling around I found the WRT610N (http://www.linksysbycisco.com/US/en/products/WRT610N) for a "Pure Router" perspective, and it's one of those that Linksys styles "N++" (http://www.linksysbycisco.com/US/en/promo/Promotion-Go-Wireless?stepname=Promotion-Step-Go-Wireless-High-Performance) But I haven't been able to find similar "ADSL" gateways. I've found the WAG320N, but there is little to no info in the Linksys site (i.e., i don't know if it's Dual Band, or if it has GB ethernet) Any opinions/recommendations of other products/suggestions are more than welcome.

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• Setting my NIC to full duplex

  - by David

  I am trying to optimize the network speed of my Solaris X86 server, and have discovered that the Cisco 3548 that it is connected to has issues with the NIC in my server. The NIC appears to have not been configured fully, and is coming up 100 half-duplex. The 3548 ports are all set to 100 full. Ideally I'd like to have the server set for 100 full, and have been attempting to configure it using ndd commands. However I have had no results. The following command: -bash-3.00# dladm show-dev rtls0 link: unknown speed: 100 Mbps duplex: unknown The NIC shows up as: pci bus 0x0001 cardnum 0x06 function 0x00: vendor 0x10ec device 0x8139 Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ which should be configurable. I have modified the configuration file from auto config (5) to 100 fdx (4) to no avail. If there is no other choice, I could alter the Cisco 3548 to be 100 half-duplex. However, this solution causes huge performance loss. Currently throughput is about 500Kbps, when it should be around 40Mbps.

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• Best way to attach 96 tb to workstation

  - by user994179

  I'm running a workstation with dual xeon 5690's (12 physical/24 logical cores), 192 gb of ram (ie, maxed-out), Windows 7 64bit, 5 slots for adapter cards, and 1 tb of internal storage, with 5 more internal bays available. I have an app that creates data files totaling about 88 tbs. These are written once every 14 months, and the rest of the time the app only needs to read them; and 95% of the reads are sequential reads of huge chunks of data. I have some control over how big the individual files are, but ideally they would be between 5 and 8 tbs. The app will be reading from only one drive at a time, and the nature of the data is such that if (when) a drive dies I can restore the data to a new disk from tape. While it would be nice to be able to use the fastest drive/controllers available, at this point size matters more than speed. After doing lots of reading, I am leaning toward buying a bunch of cheap 2tb drives and putting them into a bunch of cheap enclosures. All this stuff is going into my home office, so I need to avoid the raised floor/refrigerated approach. My questions: Is the cheap drive/enclosure solution the best one for this situation? Given the nature of the app and the way the data is used, does RAID make sense? If so, which one? For huge sequential reads, would Usb 3.0 and eSata be a wash performance-wise? For each slot available on the workstation, can I hook up an enclosure that can hold multiple drives? Or is it one controller per drive? If I can have multiple drives on one controller, am I essentially splitting the bandwidth (throughput)? For example, if I have a 12 bay enclosure, is the throughput of the controller reduced by a factor of 12? Are there any Windows 7 volume/drive/capacity limits I should be aware of? Thanks

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• Recover NTFS data from a ZFS pool that was exposed as an iSCSI target

  - by David

  This was me being stupid and the data is by no means critical and is now a learning experience first, time saver second. I set up a 100GB iSCSI target via the bare bone instructions in napp-it. It's a volume LU. I then had my Windows 7 machine connect to the iSCSI target, formatted it to NTFS, and tested the performance of it with some large iso file transfers. I then unmapped the drive, reconnected to the target, and was forced to format to NTFS again. It was then I realized the files I had transferred only existed on the iSCSI target. I threw a little fit and then went about my business. When I was cleaning up my experiment I noticed in this screen: http://imgur.com/1xlcu.jpg That is my experimental target tank/iSCSI and it still has a lot of data in it. Assuming my isos are still in this pool how would I go about recovering them? While writing this I used GetDataBackup for NTFS from www.runtime.org. And while it found two previous NTFS partitions there was no data.

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• DNS-Based Environment Determination

  - by zvolkov

  Found the following here. The questions is: where can I find more details on how exactly implement this on Windows? Any guide or how-to anybody? Or maybe you can provide your invaluable suggestions? Specifically, how do I make so that "all QA servers would first resolve entries in qa.example.com first and then if that lookup failed they would try example.com" (I'm a dev, not a DNS specialist, but our IT Support has refused to help on this:() Use DNS Based Environment Determination for your servers. Do this by initially splitting your top level domain into a number of sub domains depending on their function, and then creating DNS Service Names in each of the sub domains pointing to the relevant server for that service. Based on the list above we would then have: * clientdb.prod.example.com for Production * clientdb.perf.example.com for Performance Testing * clientdb.qa.example.com for QA * clientdb.dev.example.com for Development Servers then resolve entries in their relevant sub domain by function. That is, all QA servers would first resolve entries in qa.example.com first and then if that lookup failed they would try example.com. This allows you to have a single configuration entry for your client database hostname (clientdb) that would resolve correctly in all environments. This technique has the added advantage of still having global services defined in a common top level domain. This seems to be related to Providing "split horizon" DNS service. Reading that, I see that I will probably need separate DNS Server for each environment. Is this true or does Windows support some form of "tagging" the records to be visible depending on the requestor's IP?

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• mod_cache not working

  - by Pistos

  I have a PHP site that has many dynamically generated pages. I'm trying to turn to mod_cache to help boost performance, because in most cases, content does not change in a given day. I have configured mod_cache as best I could, following examples around the web, including the mod_cache page on apache.org. When I set LogLevel debug, I see a bit of information about the caching that is [not] happening. There are plenty of pairs of lines like this: [Fri Jun 01 17:28:18 2012] [debug] mod_cache.c(141): Adding CACHE_SAVE filter for /foo/bar [Fri Jun 01 17:28:18 2012] [debug] mod_cache.c(148): Adding CACHE_REMOVE_URL filter for /foo/bar Which is fine, because I've set CacheEnable disk /foo, to indicate that I want everything under /foo cached. I'm new to mod_cache, but my understanding about these lines is that it just means that mod_cache has acknowledged that the URL is supposed to be cached, but there are supposed to be more lines indicating that it is saving the data to cache, and then later retrieving them on subsequent hits to the same URL. I can hit the same URL till I'm blue in the face, whether with F5 refreshing, or not, or with different browsers, or different computers. It's always that pair of lines that shows in the logs, and nothing else. When I set CacheEnable disk /, then I see more activity. But I don't want to cache the entire site, and there are many, many different subpaths to the site, so I don't want to have to modify code to set no-cache headers in all the necessary places. I'll mention that mod_rewrite is in use here, rewriting /foo/bar to something like index.php?baz=/foo/bar, but my understanding is that mod_cache uses the pre-rewrite URL, not the post-rewrite URL. As far as I can tell, I have the response headers not getting in the way of caching. Here's an example from one hit: Cache-Control:must-revalidate, max-age=3600 Connection:Keep-Alive Content-Encoding:gzip Content-Length:16790 Content-Type:text/html Date:Fri, 01 Jun 2012 21:43:09 GMT Expires:Fri, 1 Jun 2012 18:43:09 -0400 Keep-Alive:timeout=15, max=100 Pragma: Server:Apache Vary:Accept-Encoding mod_cache config is as follows: CacheRoot /var/cache/apache2/ CacheDirLevels 3 CacheDirLength 2 CacheEnable disk /foo What is getting in the way of mod_cache doing its job of caching?

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• Help with memory usage issues on VPS

  - by Niall Collins

  Hi there, I am running a VPS server with 6 .net web sites/applications running on it. I am having issues with performance on the server, mainly it running out of memory. I contacted the company that lease the server to me and they told me it was because I also had sql server 2008 express also running on the server. So I went ahead and removed this, uninstalled etc. However I still seem to be having issues. For example at present, looking at resource consumption, the virtual memory is: ID: vprvmem Current Use: 894,328,832 bytes Limit: 1,073,741,824 bytes This means useage of ~80%. Is there any way I can check out exactly that applications, web sites, software is taking up most of the servers memory, so I can look at rectifying it. I feel that 80% is much to high to allow for contingency for a spike in traffic. I have got extra memory resources added to the box recently, but I would prefer finding the source of the problem rather than throwing extra memory at it. Maybe these levels are correct and alls running ok, but would like to investigate it to make sure. My knowledge of hardware is limited as I mostly deal in the spectrum of software. So any tools out there that can help me or any pertient advice.

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• SQL 2K5 - Multiple databases vs. Multiple files

  - by Bob Palmer

  Hey all, quick question. Our current legacy system was built using multiple distinct databases (about ten of them). These are all part of the same discreet system, and a large number of SPs and functionalty span multiple databases. There are also key relationships that span (for example, a header table may be in database A with history, etc. in database B). When deploying multiple copies of our app to the same server therefore, we have to use multiple instances (because the database names are coded into so many sprocs). We're evaluating the idea of taking these ten databases (about 30gb total with individual sizes ranging from 100mb to 10gb) and merging them into a single database. Currently, we have our databases spread accross multiple spindles for better IO. The question I have is whether or not there is any performance loss or benefit of having 10 different databases vs. 10 different database files? i.e. rather than having three databases (A, B, and C) Disk D: A.mdf (1gb) Disk E: B.mdf (4gb) Disk F: C.mdf (10gb) Disk G: A_Log.ldf, B_Log.ldf, C_Log.ldf have one database (X) Disk D: X1.mdf (5gb) Disk E: X2.mdf (5gb) Disk F: X3.mdf (5gb) Disk G: X1_log.ldf,X2_log.ldf,X3_log.ldf Thanks! -Bob

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• Programmer configuring a new network

  - by David Lively

  I'm in the process of expanding my home network from a couple of laptops on a wireless Verizon FiOS router to include: Linksys 24-port switch Cisco Pix 515 Cisco 3640 router One new development desktop and three new machines to act as a db server, web server and a backup system. My company is moving offices and we've decommissioned some older hardware, which I was able to pick up for the cost of the labor to move it home from the office. The benefits to working with dedicated web and db servers are very valuable to me. I know very little about network topology, other than that everything plugs into the switch, which then plugs into the cheap Verizon router. (Verizon provides a coax connection that the router must translate into Ethernet before I can use it with any of this equipment). Questions: What is the recommended topology for this equipment? Verizon router - Pix - 3600 - switch? Is the 3600 even necessary or desirable? The Verizon router has one WAN port and 4 client ports, all 10/100. Is there any performance benefit at all to wiring multiple connections from the verizon router to the switch, assuming I don't use the Pix? Should I use the Pix? Software firewalls are a pain, and seem silly if I have a device like this lying around. Anything else I should know? Am I wasting my time with this? I also obtained a 7 foot rack, shelves, patch panels, UPS, patch panels, etc, which are going into a conveniently air conditioned closet. All constructive advice appreciated.

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• Blue screen error code 1000008e

  - by Kas

  I'm getting blue screens, mostly when trying to boot a program that required a lot of memory (games, photo editing software.) So far I've only managed to catch one set of error codes: BCCode: 1000008e BCP1: C0000005 BCP2: ADA393BA BCP3: E9BCEBC4 BCP4: 00000000 OS Version: 6_0_6002 Service Pack: 2_0 Product: 768_1 It's on a Sony VAIO Laptop VGN FW-41E, Vista OS service pack 2. Besides these codes it lists two 'temporary' files that were related with this crash: ...AppData\Local\Temp\WER-134925-0.sysdata.xml ...AppData\Local\Temp\WERDA66.tmp.version.txt When I googled these files some site said it was linked to a worm called 'yodo', but virus scans don't return any results (hitman pro, malware bytes, avast antivirus all turn up empty). Upon further searching about this yodo worm, I came across security stronghold where someone posted they had acquired this worm when downloading access and excel templates. Now, I actually did download templates for the same programs, they might have been the same, they may be related or I might be grasping at straws here. I have not noticed any issues other in performance as of late, just BSOD's when I start software that requires some memory, but I never had issues with these exact same programs before. Help and/or hints are required on how to actually figure out what's the root of this BSOD issue and how can I fix it. Do you reckon it's actually a virus? What program should be able to remove YODO worm stuff?

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• How to fix massive lag on ZyXEL HomePlug AV powerline adapters?

  - by Tim Abell

  I have 3 ZyXEL Homeplug AV powerline adapters as per the one in the review below. I have two plugged in currently, one into my Be / Thompson wireless router, and one into my desktop pc (box1). every now and then the link indicator on the adapters (the mains link, not the ethernet link) goes nutty, and performance falls off a cliff (see below). http://www.gadgetspeak.com/gadget/article.rhtm/753/479266/ZyXEL_PowerLine_HomePlug_AV_PLA401.html 64 bytes from box1 (192.168.1.101): icmp_seq=1064 ttl=64 time=996 ms 64 bytes from box1 (192.168.1.101): icmp_seq=1065 ttl=64 time=549 ms 64 bytes from box1 (192.168.1.101): icmp_seq=1066 ttl=64 time=6.15 ms 64 bytes from box1 (192.168.1.101): icmp_seq=1067 ttl=64 time=1400 ms 64 bytes from box1 (192.168.1.101): icmp_seq=1068 ttl=64 time=812 ms 64 bytes from box1 (192.168.1.101): icmp_seq=1069 ttl=64 time=11.1 ms 64 bytes from box1 (192.168.1.101): icmp_seq=1070 ttl=64 time=1185 ms 64 bytes from box1 (192.168.1.101): icmp_seq=1071 ttl=64 time=501 ms 64 bytes from box1 (192.168.1.101): icmp_seq=1072 ttl=64 time=1975 ms 64 bytes from box1 (192.168.1.101): icmp_seq=1073 ttl=64 time=970 ms ^C --- box1 ping statistics --- 1074 packets transmitted, 394 received, +487 errors, 63% packet loss, time 1082497ms rtt min/avg/max/mdev = 5.945/598.452/3526.454/639.768 ms, pipe 4 Any idea how to diagnose/fix? I'm on linux so installing the windoze software that came with them is not something I'm terribly keen to do.

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• Sluggish Windows SBS 2003

  - by TomWilsonFL

  One of my customers has a Windows 2003 Small Business Server which at this point is basically the DC, DNS, Fileserver and Symantec Protection Manager. I have disabled Exchange because I moved their mail to Google Apps. The server is extremely sluggish when doing anything. It is most noticeable when a dialog box is open (say the System properties), and you try to change tabs. This is usually instant, but on this machine can take 3-5 seconds. What additional services / packages can I uninstall from this machine knowing that it is only performing the above roles? Will removing the "Small Business Server" package in Add / Remove Programs get rid of a few unnecessary things? Any other thoughts? P.S. I know Symantec Endpoint and the Protection Manager are hogs, but I have nothing to replace the solution with at the moment. Thanks, Tom UPDATE: I looked over the different performance metrics, but nothing stood out as a problem. One of my friends mentioned Symantec's log and temp files can get quite huge and slow things down, so I ran CCleaner on the machine and found close to 3 GB of Symantec "stuff." Removed that and now the machine is MUCH better. I am still unsure why the data just sitting there would cause such a slowdown. The drive is not even near full. The only thing I can imagine is that Symantec must have to run through this stuff now and then.

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• What's the lowest cost, legal, Microsoft server stack you can assemble?

  - by McKAMEY

  Assuming that you have an app infrastructure that generally only requires: ASP.NET MVC / C# / .NET Database or NoSQL data store (must be accessible from C#) Here's the challenge to you server gods: What is the least expensive configuration that will allow you to deploy to production in a way that doesn't break any licensing rules? In what ways does this solution differ from the "standard" Microsoft deployment scenario? Where does this solution's performance break down once the app begins to scale? I'm not concerned about the hardware, only the server software itself. I would love to hear about any solutions you've personally put into production. Especially if they are unique alternatives. For ideas, consider some of the possible variations, a) any Microsoft server solutions where they have lowered the barrier to entry to compete with OSS, or b) any OSS alternatives to Microsoft products which perform at a similar level. An example of a): SQL Server 2008 Express Edition SP1 is a 100% free version of SQL Server which will scale to the needs of many smaller / early stage applications. An example of b): running the Mono Framework on Linux. An example of differing from the "standard" stack: running Mono on Linux will require a completely different server OS familiarity. None of the Windows-based knowledge really transfers. An example of breaking down under scale: SQL Server Express will only scale to 1GB of memory and 4GB of disk storage. After that point, the application will need to move to one of the paid versions of SQL Server.

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• Walkthrough/guide building aplication server for multi tenant web app [on hold]

  - by Khalid Adisendjaja

  The web app will detect a subdomain such as tenant1.app.com, tenant2.app.com, etc to identify tenant environment, each tenant environment will have a different database credential (port,db name,etc) but still connecting to the same database server. Each tenant should use app.com for their main domain, using their own domain is prohibitted. Each tenant will have their own rest api endpoint such as tenant1.app.com/api/v1/xxxx, tenant2.app.com/api/v1/xxxx, tenant3.app.com/api/v1/xxxx I've come to a simple solution by setting a wildcard subdomain (*.app.com) on webserver Apache/Nginx vhost configuration file. I have googled so many concept for building a multi-tenant app server but still don't understand how to really done it, what is the right way to do it and what is actually required to do this task. So I've come to this questions, Do I need a proxy server, dns masking, etc.. How to monitor each tenants activity What about server performance, load balancing, and scalability How to setup ssl certificate for each tenant what about application cache for each tenant Is it reliable to use the setup for production etc ... I have a very litte experience on server infrastructure, so I'm looking for a DIY walkthrough, step by step guide, or sophisticate solution ready to implemented for production

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• Building a PC for Work and play? [closed]

  - by Derek Organ

  Ok, Its been a long time since I build my own PC so I'm looking to get back into it again and build a new one. First off budget is about €800 excluding the monitor and windows 7 licence and mouse. (just bought a new g500) I plan on using my computer for work, lots of applications open at once but none particularly excessive (photoshop being the most demanding, mostly coding tools) I also use it for some gaming, e.g. COD, Starcraft etc. One thing I do want to do eventually is get a really good monitor with hight resolution and maybe 27" so the graphics card needs to be able to make best use of that. So a few questions 1) Is the bottle neck in performance mostly still the harddrives? 2) Aren't most processors e.g. i5 etc even i3 so far a head of other bottlenecks it makes litte difference the higher you go. Isn't the Graphics card dealing with heavy graphics so what really slows because of a slow CPU? So from this my thinking is to get a SSD drive as my primary drive for OS etc and have loads of memory e.g. 6-8GB and a decent mid level graphics card? It doesn't seem at my level worth spending much on CPU and any other parts really. I basic parts off the top of my head Case, Motherboard CPU SSD Drive SATA Drive Power Supply Memory Cooling (fan?) Graphics Card Network Card Keyboard DVD drive Mouse Windows Monitor Am I missing anything? Any helpful tips or general education much appreciated. Thanks, Derek

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• Free tiered storage automation in linux?

  - by NginUS

  I have a couple virtualized fileservers running in QEMU/KVM on ProxmoxVE. The physical host has 4 storage tiers with significant performance variances. They're attached both locally and via NFS. These will be provided to the fileserver(s) as local disks, abstracted into pools, and handling multiple streams of data for the network. My aim is for this abstraction layer to intelligently pool the tiers. There's a similar post on the site here: Home-brew automatic tiered storage solutions with Linux? (Memory - SSD - HDD - remote storage) in which the accepted answer was a suggestion to abandon a linux solution for NexentaStor. I like the idea of running NexentaStor. It almost fits the bill. NexentaStor provides Hybrid Storage Pools, and I love the idea of checksumming. 16TB without incurring licensing fees is a huge plus as well. After the expense of the hardware, free is about all my budget can handle. I don't know if zfs pools are adaptive or dynamically allocated based on load, but it becomes irrelevant since NexentaStor doesn't support virtio network or block drivers, which is a must in my environment. Then I saw a commercial solution called SmartMove: http://www.enigmadata.com/smartmove.html And it looks like a step in the right direction, but I'm so broke I'd be wasting their time to even ask for a quote, so I'm looking for another option. I'm after a linux implementation that supports virtio drivers, and I'm at a loss as to which software is up to it.

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• Desktop virtualization

  - by gurpal2000

  Is there currently a proper Type 1 "desktop" hypervisor? Either free or not? This is just for tinkering around at home on some beefy Phenom machines. Basically i want to be able to run say 2 OSs on the same PC but without loading windows or a heavy flavour of linux and then use a hotkey to switch between them. I should get full performance out of them. So do i need something better than vmware workstation and/or virtualbox. I think these are "Type 2"? I already run VMWare w/s and VBox but is there a more performant solution? I saw a YouTube video from Citrix where a laptop was running XP and Vista. With the touch of a hot key they could switch between them. There was no visible underlying OS (there might be a hypervisor)? I have access to Citrix XenDesktop 3 enterprise edition evaluation. I realise this isn't for desktops but can i achieve my goal (geekiness) ? If i use the free XenServer 5.5.0 how do my client PCs access windows/linux/whatever from the xenserver? Is it via a thin client RDP type application? If so if there one for both windows and linux? Also if i do use XenServer can i use USB in either direction? What is Citrix receiver can i use that for (3) ? If so, is there some hotkey i can configure? whatever client is used to access the server software (whether it be on a different server or local) can i get full opengl/directx acceleration? what about Xen? i tried the Xen LiveCD but no clue as how to configure it. As you can see much confusion. Any help/pointers welcome. Cheers.

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• Starting my own server - basic recommendations and questions [closed]

  - by Ilia Rostovtsev

  Possible Duplicate: Can you help me with my capacity planning? I'm planning to start my own high-performance server and then use collocation services for keeping it up and running. I'm planning to USE it for processing videos and keeping big video site up! (using FFMpeg, MENcoder and etc.) I just need recommendations on whether listed hardware is good enough and will work together well and fast enough. Do I need anything else (missed something). I remember about CPU coolers though! ;) I'm planning to use SSD drives so please tell me if it's going to work just as regular HDDs (but much faster)? Are they going to be used as RAID (is this possible for SSDs)? Here is what I would like to get: Intel ® Server System SR1600URHSR (Urbanna) or Intel® Server System SR1695WBAC 2 x Intel Xeon X5650 4 x 16Gb DDR-III 1333MHz Kingston ECC Reg (KVR13R9D4/16) 3 x (or maybe 4x) 480Gb SSD Intel 520 Series (SSDSC2CW480A3K5) Which server system would be better? Is listed hardware new/good enough and worth buying it at the moment? Should I probably take a look at something slightly more expensive but more up to date and powerful, may be? After all as software I would like to use CentOS 6 64 bit + WHM/CPanel? Any other suggestions on maybe cheaper and same/more powerful server management system but WHM? What most important points to keep in mind when starting/maintaining your own server?

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• Home Server: cpu virtualisation, what to choose?

  - by Huygens

  I'm looking for virtualisation solutions for storage and OS for a home server. A sort of private cloud where I manage the storage space independently of the VM one. This question focus on VM (or compute instance) management and what would best suit my needs. (I have another question related to the storage management). My use cases are: A backup server: rsync and other services running. A personal cloud server: a kind of owned dropbox system, à la ownCloud. " users foreseen. A media server: streaming videos and displaying photos. Here my environement and wishes: Server: HP Proliant MicroServer with 8 GB RAM (AMD Turion dual core with AMD-V technology) OS types: only Linux (perhaps a *BSD VM in the future) Linux distributions do not matter, I'm familiar with RHEL, Fedora, Suse, Ubuntu, but any other recommandation will be fine 2-3 VMs foreseen: backup server, owncloud server and media server (optional). Those are only servers, so no graphical console needed (I don't need VirtualBox) By VM I mean a virtualised environment like KVM, Xen, etc. or a compute instance like with OpenStack storage should be "virtualised/cloudified" see my other question. VM should be able to be migrated to another server in the future if performance cannot be fullfilled anymore by the current server It does not matter if installation of such setup is complicated as long as management tools allow for easy maintenance I don't have Windows at home, so solution should be Linux friendly and would be nice to be web based. But native apps are OK too. System should be easy to enhance: by adding a new server to migate some of the VMs to it. So it's really a kind of private cloud on which I could run some Linux OS. I would prefer free (libre, as in a free speach) and open source tools. But it does not have to be free as in a free beer. So Xen, KVM, VitualBox or OpenStack? What would you recommend?

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• Cannot get Windows snipping tool to auto run with AutoHotKey

  - by jasondavis

  I am trying to get Windows 7 sniping tool to run when I hit my PRINTSCREEN keyboard button with AUTOHOTKEY. I have been unsuccessful so far though. Here is what I have for the AutoHotKey script. I have tried this PRINTSCREEN::Run, c:\windows\system32\SnippingTool.exe and this PRINTSCREEN::Run, SnippingTool.exe and this PRINTSCREEN::Run, SnippingTool And all those give me this error when I hit the PRINTSCREEN button... It basicly says it cannot find the file, however the file path seems to be correct, I can copy paste it into a window and it opens the snipping tool, any ideas why it will not work? Here is the full code to my AHK file... ; ; AutoHotkey Version: 1.x ; Language: English ; Platform: Win7 ; Author: Jason Davis <friendproject@> ; ; Script Function: ; Template script (you can customize this template by editing "ShellNew\Template.ahk" in your Windows folder) ; #NoEnv ; Recommended for performance and compatibility with future AutoHotkey releases. SendMode Input ; Recommended for new scripts due to its superior speed and reliability. SetWorkingDir %A_ScriptDir% ; Ensures a consistent starting directory. /* PRINTSCREEN = Will run Windows 7 snipping tool */ PRINTSCREEN::Run, c:\windows\system32\SnippingTool.exe return

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