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  • SQL Server 2008 Cluster Installation - First network name always fails

    - by boflynn
    I'm testing failover clustering in Windows Server 2008 to host a SQL Server 2008 installation using this installation guide. My base cluster is installed and working properly, as well as clustering the DTC service. However, when it comes time to install SQL Server, my first attempt at installation always fails with the same message and seems to "taint" the network name. For example, with my previous cluster attempt, I was installing SQL Server as VSQL. After approximately 15 attempts of installation and trying to resolve the errors, e.g. changing domain accounts for SQL, setting SPNs, etc., I typoed the network name as VQSL and the installation worked. Similarly on my current cluster, I tried installing with the SQL service named PROD-C1-DB and got the same errors as last time until I tried changing the name to anything else, e.g. PROD-C1-DB1, SQL, TEST, etc., at which point the install works. It will even install to VSQL now. While testing, my install routine was: Run setup.exe from patched media, selecting appropriate options After the install fails, I'd chose "Remove node from a SQL Server failover cluster" and remove the single, failed, node Attempt to diagnose problem, inspect event logs, etc. Delete the computer account that was created for the SQL Service from Active Directory Delete the MSSQL10.MSSQLSERVER folder from the shared data drive The error message I receive from the SQL Server installer is: The following error has occurred: The cluster resource 'SQL Server' could not be brought online. Error: The group or resource is not in the correct state to perform the requested operation. (Exception from HRESULT: 0x8007139F) Along with hundreds of the following errors in the Application event log: [sqsrvres] checkODBCConnectError: sqlstate = 28000; native error = 4818; message = [Microsoft][SQL Server Native Client 10.0][SQL Server]Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'. System configuration notes: Windows Server 2008 Enterprise Edition x64 SQL Server 2008 Enterprise Edition x64 using slipstreamed SP1+CU1 media Dell PowerEdge servers Fibre attached storage

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  • which performance counters mainly matter for windows server performance?

    - by Karl Cassar
    We have a website which is sometimes performing slowly, and / or completely hangs. I have setted up temporarily the default system performance data collector in Performance Monitor, to see if this can shed some light. However, the default Data Collector set collects a huge amount of counters, as well as generates huge logs files. Just 8 hours of data resulted in 4GB of data. Which performance counters matter the most, when judging server load? Also, is it a performance concern if one leaves such data-collectors running indefinitely? Obviously, I will not know when the server will experience slow performance, so I need the logs there so that I can check them out. Any other specific guidelines on monitoring server performance would be greatly appreciated. OS is a Windows Server 2008 R2 (Web Edition).

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  • Home networking problem between power line communication and Ethernet

    - by pixeline
    My network runs through the electrical wiring of the house and is organised as such: Groundfloor: an ADSL+network switch, using DHCP (address : 172.19.3.1) (Mac) PCs connected via an electrical adapter (model: D-Link DHP-200) (1 per PC) First Floor: 1 switch (8 ports) connected via an electrical adapter (model: D-Link DHP-200) (address unknown) 2 Mac PCs connected (via RJ45 network wires) to that router using DHCP The Problem On the first floor, file tranfers between PCs are fast and perfect. But if I try to transfer files from or to a computer on the ground floor, the speed is slow and eventually the transfer dies out. The Question So I suspect the 1st floor switch is creating some kind of barrier (firewall?) preventing external PCs from accessing the PCs it is connected to? Am I right and if so, how could I disable that barrier?

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  • High Tq values for HAProxy

    - by Will
    I just took over administration of a new environment. A known issue is that the environment is known for high response times (20+ seconds), so I figured I'd turn on haproxy logging and see what is going on. I figured I'd see slow load times in the app servers, but I'm actually seeing high Tq values in HAProxy. The HAProxy is on EC2 and is NOT behind ELB. Sep 5 14:22:00 haproxy-apps01 haproxy[24695]: 76.14.153.221:3371 [05/Sep/2012:14:21:49.780] http-in default_apps/fe04-c 10936/0/0/55/10991 200 488 - - ---- 111/111/0/1/0 0/0 "GET /event_times/next?callback=jQuery170189312373075111_1346854917562&_=1346854918453 HTTP/1.1" As you can see, this one has a Tq of about 10 seconds. Not all the Tq's are high (1+ seconds), but a good percentage of them are (approx 35%). Normally when I see this behavior, I'd expect there to be network issues, but this is an incredibly high percentage of visitors to be having an issue like this, so I'm wondering if anybody has seen this or have any hints on diagnosing if the issue could possibly be on this box?

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  • Why is my WCF Rest Service on IIS7 Authenticating TWICE!?!?

    - by TheAggie
    Ok, if someone could shed some light on this for me, I would greatly appreciate it. So here we go. I had a rest service running fine the other day but after I accidentally overwrote the web.config all hell broke loose. I've spent the past day and a half trying to sort things out but I can't seem to figure out what is missing or misplaced. So, I've designed this service around WCF Rest Contrib (http://wcfrestcontrib.codeplex.com)'s authentication process. Now, I can get this working fine on my localhost w/ the current web.config (minus the endpoint entry) but once I upload it to discountasp and select "basic authorization" in the ISS7 Manager, it appears that I'm getting authenticated twice! Once using my discount asp.net user/pass and then the next time using the application user/pass. Unfortunately I only provide one set of credentials and don't want to hard code my discountasp account info into the app. Like I said before, this worked fine a few days ago. Anyway. here is my web.config as it is now: <?xml version="1.0"?> <configuration> <connectionStrings> <add name="SQL2008_ConnectionString" connectionString="Data Source=sql2k8xx.discountasp.net;Initial Catalog=SQL2008_xx;Persist Security Info=True;User ID=SQL2008_xx_user;Password=myPass" providerName="System.Data.SqlClient" /> </connectionStrings> <system.web> <httpRuntime maxRequestLength="204800" executionTimeout="3600"/> <compilation debug="true"> <assemblies> <add assembly="System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/> <add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/> </assemblies> </compilation> <httpModules> <add name="ServiceAnonymityModule" type="WcfRestContrib.Web.ServiceAnonymityModule, WcfRestContrib"/> </httpModules> </system.web> <system.codedom> <compilers> <compiler language="c#;cs;csharp" extension=".cs" warningLevel="4" type="Microsoft.CSharp.CSharpCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"> <providerOption name="CompilerVersion" value="v3.5"/> <providerOption name="WarnAsError" value="false"/> </compiler> </compilers> </system.codedom> <system.webServer> <validation validateIntegratedModeConfiguration="false"/> <modules> <remove name="ServiceAnonymityModule"/> <add name="ServiceAnonymityModule" type="WcfRestContrib.Web.ServiceAnonymityModule, WcfRestContrib"/> </modules> <handlers> <remove name="WebServiceHandlerFactory-Integrated"/> </handlers> </system.webServer> <system.diagnostics> <trace autoflush="true" /> </system.diagnostics> <system.serviceModel> <serviceHostingEnvironment aspNetCompatibilityEnabled="false"> <baseAddressPrefixFilters> <add prefix="http://www.mydomain.com/myServiceBaseAddress"/> </baseAddressPrefixFilters> </serviceHostingEnvironment> <extensions> <behaviorExtensions> <add name="webAuthentication" type="WcfRestContrib.ServiceModel.Configuration.WebAuthentication.ConfigurationBehaviorElement, WcfRestContrib, Version=1.0.5.0, Culture=neutral, PublicKeyToken=89183999a8dc93b5"/> <add name="errorHandler" type="WcfRestContrib.ServiceModel.Configuration.ErrorHandler.BehaviorElement, WcfRestContrib, Version=1.0.5.0, Culture=neutral, PublicKeyToken=89183999a8dc93b5"/> <add name="webFormatter" type="WcfRestContrib.ServiceModel.Configuration.WebDispatchFormatter.ConfigurationBehaviorElement, WcfRestContrib, Version=1.0.5.0, Culture=neutral, PublicKeyToken=89183999a8dc93b5"/> <add name="webErrorHandler" type="WcfRestContrib.ServiceModel.Configuration.WebErrorHandler.ConfigurationBehaviorElement, WcfRestContrib, Version=1.0.5.0, Culture=neutral, PublicKeyToken=89183999a8dc93b5"/> </behaviorExtensions> </extensions> <bindings> <customBinding> <binding name="HttpStreamedRest"> <httpTransport maxReceivedMessageSize="209715200" manualAddressing="true" /> </binding> <binding name="HttpsStreamedRest"> <httpsTransport maxReceivedMessageSize="209715200" manualAddressing="true" /> </binding> </customBinding> </bindings> <behaviors> <serviceBehaviors> <behavior name="Rest"> <webAuthentication requireSecureTransport="false" authenticationHandlerType="WcfRestContrib.ServiceModel.Dispatcher.WebBasicAuthenticationHandler, WcfRestContrib" usernamePasswordValidatorType="MyLibrary.Runtime.SecurityValidator, MyLibrary" source="MyRESTServiceRealm"/> <webFormatter> <formatters defaultMimeType="application/xml"> <formatter mimeTypes="application/xml,text/xml" type="WcfRestContrib.ServiceModel.Dispatcher.Formatters.PoxDataContract, WcfRestContrib"/> <formatter mimeTypes="application/json" type="WcfRestContrib.ServiceModel.Dispatcher.Formatters.DataContractJson, WcfRestContrib"/> <formatter mimeTypes="application/x-www-form-urlencoded" type="WcfRestContrib.ServiceModel.Dispatcher.Formatters.FormUrlEncoded, WcfRestContrib"/> </formatters> </webFormatter> <errorHandler errorHandlerType="WcfRestContrib.ServiceModel.Web.WebErrorHandler, WcfRestContrib"/> <webErrorHandler returnRawException="true" logHandlerType="MyLibrary.Runtime.LogHandler, MyLibrary" unhandledErrorMessage="An error has occured processing your request. Please contact technical support for further assistance."/> </behavior> </serviceBehaviors> </behaviors> </system.serviceModel> </configuration> So, whenever I upload this and change the ISS setting to Basic Authentication, it looks like it is trying to use the default handler for authentication as if I try to enter my web app user/pass, I get an error screen which has the following detailed information about the moduel/handler Detailed Error Information Module: IIS Web Core Notification: AuthenticateRequest Handler: svc-ISAPI-2.0 Error Code: 0x80070005 Requested URL: http://www.mydomain.com:80/MyService.../MyService.svc Physical Path: E:\web\xxxxxx\htdocs\MyServiceBaseAddress\MyService.svc Logon Method: Not yet determined Logon User: Not yet determined Now for the fun stuff... i tried providing my discountasp.net account username/password for kicks and sure enough it responded properly for any [OperationContract] which doesn't have [OperationAuthentication] defined (which is only one or two of the operations I have). I thought this was strange, so I looked at fiddler and saw something interesting. Whenever I try request a procedure with [OperationAuthentication] defined and provide my discountasp.net username/pass I get two different "WWW-Authenticate" headers back in Fiddler: WWW-Authenticate: Basic realm="MyRESTServiceRealm" WWW-Authenticate: Basic realm="www.mydomain.com" On the other hand, if I try to access the same procedures with only my application's user/pass, I only get the site's header: WWW-Authenticate: Basic realm="www.mydomain.com" My hypothesis is that for some reason I'm having to pass through the default "Basic Authorization" layer set by IIS before I can get to the application's "Custom Basic Authorization" layer. After verifying this by created an identical user/pass for my service that I use for my discountasp.net account, I was able to successfully pass both layers of authentication without any issues... so I think I can conclude that this is indeed the issue. Now how do I disable the default one? Do I need to do this in the IIS Manager, or in the web.config? Anyway, I have absolutely no idea how this is possible or what I need to do to resolve the issue, but I know that something is seriously out of whack. Any suggestions would be greatly appreciated! Thanks.

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  • I need to get VMWare Server running inside of a VMWare ESXi virtual machine

    - by Josh Moore
    Yes, I know running a virtual machine inside of a virtual machine is a bad idea. Yes, I know it will be very slow. However, our production system required VMs in VMWare server and I do not want to setup a real server for each of our developers for testing. I would like to be able to setup all of the VMWare servers (that mimic our production environment) on one ESXi server. I have found as much info as I can about this topic and I have tried what was suggested here and here. I have not been able to get any of these suggestions to work, I still get the VM cannot run inside of a VM error. If there are any other suggestions that anybody else have that would be great thanks.

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  • NHibernate which cache to use for WinForms application

    - by chiccodoro
    I have a C# WinForms application with a database backend (oracle) and use NHibernate for O/R mapping. I would like to reduce communication to the database as much as possible since the network in here is quite slow, so I read about second level caching. I found this quite good introduction, which lists the following available cache implementations. I'm wondering which implementation I should use for my application. The caching should be simple, it should not significantly slow down the first occurrence of a query, and it should not take much memory to load the implementing assemblies. (With NHibernate and Castle, the application already takes up to 80 MB of RAM!) Velocity: uses Microsoft Velocity which is a highly scalable in-memory application cache for all kinds of data. Prevalence: uses Bamboo.Prevalence as the cache provider. Bamboo.Prevalence is a .NET implementation of the object prevalence concept brought to life by Klaus Wuestefeld in Prevayler. Bamboo.Prevalence provides transparent object persistence to deterministic systems targeting the CLR. It offers persistent caching for smart client applications. SysCache: Uses System.Web.Caching.Cache as the cache provider. This means that you can rely on ASP.NET caching feature to understand how it works. SysCache2: Similar to NHibernate.Caches.SysCache, uses ASP.NET cache. This provider also supports SQL dependency-based expiration, meaning that it is possible to configure certain cache regions to automatically expire when the relevant data in the database changes. MemCache: uses memcached; memcached is a high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load. Basically a distributed hash table. SharedCache: high-performance, distributed and replicated memory object caching system. See here and here for more info My considerations so far were: Velocity seems quite heavyweight and overkill (the files totally take 467 KB of disk space, haven't measured the RAM it takes so far because I didn't manage to make it run, see below) Prevalence, at least in my first attempt, slowed down my query from ~0.5 secs to ~5 secs, and caching didn't work (see below) SysCache seems to be for ASP.NET, not for winforms. MemCache and SharedCache seem to be for distributed scenarios. Which one would you suggest me to use? There would also be a built-in implementation, which of course is very lightweight, but the referenced article tells me that I "(...) should never use this cache provider for production code but only for testing." Besides the question which fits best into my situation I also faced problems with applying them: Velocity complained that "dcacheClient" tag not specified in the application configuration file. Specify valid tag in configuration file," although I created an app.config file for the assembly and pasted the example from this article. Prevalence, as mentioned above, heavily slowed down my first query, and the next time the exact same query was executed, another select was sent to the database. Maybe I should "externalize" this topic into another post. I will do that if someone tells me it is absolutely unusual that a query is slowed down so much and he needs further details to help me.

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  • iSCSI errors continue after removing inaccessible target portal

    - by Ansgar Wiechers
    By mistake I entered an iSCSI target portal address in the iSCSI Initiator on one of our virtual servers that does not have an address in the network range used for iSCSI. This caused the following errors/warnings to appear in the eventlog: Log Name: System Source: MSiSCSI Event ID: 113 Level: Warning Description: iSCSI discovery via SendTargets failed with error code 0xefff0003 to target portal *192.168.23.42 0003260 Root\ISCSIPRT\0000_0 . Log Name: System Source: iScsiPrt Event ID: 1 Level: Error Description: Initiator failed to connect to the target. Target IP address and TCP Port number are given in dump data. Log Name: System Source: iScsiPrt Event ID: 70 Level: Error Description: Error occurred when processing iSCSI logon request. The request was not retried. Error status is given in the dump data. So far that's expected beahvior, so I removed the portal from the iSCSI Initiator as described in MSKB 976072. However, the errors/warnings keep appearing every hour, even though neither iSCSI Initiator GUI nor iscscli show any portals: C:\>iscsicli ListTargetPortals Microsoft iSCSI Initiator Version 6.1 Build 7601 The operation completed successfully. The problem persists after rebooting the server. Uninstalling the Microsoft iSCSI Initiator device via devmgmt.msc as well as changing the Initiator parameters like this: [HKLM\SYSTEM\CurrentControlSet\Control\Class\{4D36E97B-E325-11CE-BFC1-08002BE10318}] "MaxPendingRequests"=dword:00000001 "MaxConnectionRetries"=dword:00000001 "MaxRequestHoldTime"=dword:00000005 didn't help either. Each change was followed by a reboot. Disabling the device does prevent the errors/warnings from re-appearing, of course, but I'd rather not have to resort to this. How can I prevent those errors and warnings from appearing (short of disabling the initiator device or re-installing the server)? What am I missing? Environment: The virtual machine runs on a Hyper-V cluster managed by SCVMM 2012. Hosts and guests run Windows Server 2008 R2 SP1. The physical machines are Dell PowerEdge M710HD blades.

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  • Virus that tries to brute force attack Active Directory users (in alphabetical order)?

    - by Nate Pinchot
    Users started complaining about slow network speed so I fired up Wireshark. Did some checking and found many PCs sending packets similar to the following: (screenshot) http://imgur.com/45VlI.png I blurred out the text for the username, computer name and domain name (since it matches the internet domain name). Computers are spamming the Active Directory servers trying to brute force hack passwords. It will start with Administrator and go down the list of users in alphabetical order. Physically going to the PC finds no one anywhere near it and this behavior is spread across the network so it appears to be a virus of some sort. Scanning computers which have been caught spamming the server with Malwarebytes, Super Antispyware and BitDefender (this is the antivirus the client has) yields no results. This is an enterprise network with about 2500 PCs so doing a rebuild is not a favorable option. My next step is to contact BitDefender to see what help they can provide. Has anybody seen anything like this or have any ideas what it could possibly be?

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  • How to install a Canon iRunner 210s

    - by Ssvarc
    A client has a Canon iRunner210S and is complaining about slow print speeds. I've searched for a install manual online but came up empty. A call to Canon technical referred me to their dealer network for service, as as informing me that there isn't a manual available on their website. Anyone know how to install these and/or have a link to a manual? The current setup has the printers on a LAN Manager printer port instead of on straight IP ports. Is this normal for this printer? And what exactly are Lan Manager ports (based on my research, they appear to be a way to authenticate a connection)?

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  • Looking for a manual/how-to for installing a Canon iRunner 210s network printer

    - by Ssvarc
    A client has a Canon iRunner210S and is complaining about slow print speeds. I've searched for a install manual online but came up empty. A call to Canon technical referred me to their dealer network for service, as as informing me that there isn't a manual available on their website. Anyone know how to install these and/or have a link to a manual? The current setup has the printers on a LAN Manager printer port instead of on straight IP ports. Is this normal for this printer? And what exactly are Lan Manager ports (based on my research, they appear to be a way to authenticate a connection)?

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  • Linux: setting up an elite/high-anonimity Web proxy on a dedicated server

    - by YellowSquirrel
    I'm renting a dedicated server which I'd like to use to "surf the Web": basically I want to always surf the Web from the same static IP (the one of my dedicated server). I can do it by running Xvnc/FreeNX on the dedicated server, but this is kinda slow and clumsy (I tried it). What are the steps needed to install an "elite/high-anonimity" Web proxy on a dedicated (Debian) Linux server knowing that my two requirements are: I'm the only person that needs access to the proxy all I want is that my broadband (dynamic) IP is completely hidden (I want to always surf from my dedicated server's IP). Note that using the static IP people can find my domains and my real name and I'm perfectly fine with that (actually it is what I want). What I don't want is people knowing from which dynamic IP (broadband) I'm connecting. What are the steps needed to do that? (basically I don't care about "anonimity", what I want is to appear to surf from a static IP and I think I need what is called an "elite" Web proxy to do that, but I'm not sure) Technical infos and sample configuration most welcome :)

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  • Windows Server 2008 Services won't start after patch

    - by Antitribu
    After installing the run of the mill patches today on a Windows Server 2008 (Running as an AD controller and Exchange 2007 Server) the machine came back up with "configuring updates stage 3 of 3 0% complete". The machine had been kept reasonably up to date so this likely was caused by a very recent patch. At the leaste the following patches were installed: KB973037 KB969947 KB973565 Restarting the server into safe mode and then subsequently rebooting (with no changes made) allowed the computer to restart and I can now log in normally. However none of the critical services start; including but not limited to Exchange, DNS and Terminal Services (Obviously if DNS doesn't start other things will break). I am unable to run Internet Explorer but Chrome will work. There are no meaningful errors in the event logs as to why services won't start. Under KDC I have The Key Distribution Center (KDC) cannot find a suitable certificate to use for smart card logons, or the KDC certificate could not be verified. Smart card logon may not function correctly if this problem is not resolved. To correct this problem, either verify the existing KDC certificate using certutil.exe or enroll for a new KDC certificate. This is going to be an evil one to debug and I'm kinda hoping someone has encountered it and knows the answer off hand. Thanks all.

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  • Magento Community - Hosting :: Need Advice which sharing hosting will run magento fast

    - by user43353
    Hi, Need Advice which sharing hosting will run Magento Community fast or some other not expensive solution. This website will not have a lot of users, I only need that it will run fast for 100-20 users in same time. The problem with magento is database design that make this system very slow , also other staff not the best. I had hostmonster.com and justhost.com for previous website but it wasn't fast enough for single user that not located in USA (my customer areas: Asia, Africa). each action that involve database takes a lot of time. Thanks

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  • Experience with MooseFS?

    - by brown.2179
    Anyone have any experience using MooseFS? I want an easy distributed storage platform to store static data archive of about 10 TB and serve it to 20-40 nodes. Also I want to be able to add storage as the archive grows without having to rebuild the filesystem. I don't care if it's a bit slow. I just want it to be simple and stable. Basically from what I can see for OS X it's between MooseFS and Gluster. Any other suggestions?

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  • How to adjust and combine multiple lower quality photos into one better using FOSS?

    - by Vi
    I have multiple noisy photos (caputed without tripod) that needs to be adjusted (moved/rotated) and averaged. How it's better to do it in Linux with FOSS console-based programs? Current way is something like: mplayer mf://*.JPG -vo yuv4mpeg:file=qqq.yuv transcode -i qqq.yuv -y null -J stabilize=maxshift=500:fieldsize=100:fieldnum=6:stepsize=50:shakiness=10 transcode -i qqq.yuv -J transform=smoothing=100000:sharpen=0:optzoom=0 -y raw -o www.yuv mplayer www.yuv -vo pnm gm convert -average 0*.ppm q.ppm i.e.: Convert photos to video Apply Transcode's "Stabilize" filter Convert the video back to images Average the images. It works, but bad: photos still not perfectly adjusted and the whole sequence is very slow. What is better way of doing it?

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  • Linux Kernel Messages: ata1.00: status: { DRDY ERR }

    - by PM
    I am receiving a lot of these messages. Is my HD going to die tomorrow morning? ata1: link is slow to respond, please be patient (ready=0) ata1: device not ready (errno=-16), forcing hardreset ata1: soft resetting link ata1: clearing spurious IRQ ata1: clearing spurious IRQ ata1: clearing spurious IRQ ata1.00: configured for UDMA/33 ata1: EH complete ata1.00: qc timeout (cmd 0xa0) ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen ata1.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 res 51/20:03:00:00:00/00:00:00:00:00/a0 Emask 0x5 (timeout)

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  • Simple animation using C#/Windows Forms

    - by clintp
    I need to knock out a quick animation in C#/Windows Forms for a Halloween display. Just some 2D shapes moving about on a solid background. Since this is just a quick one-off project I really don't want to install and learn an entire new set of tools for this. (DirectX dev kits, Silverlight, Flash, etc..) I also have to install this on multiple computers so anything beyond the basic .Net framework (2.0) would be a pain in the arse. For tools I've got VS2k8, 25 years of development experience, a wheelbarrow, holocaust cloak, and about 2 days to knock this out. I haven't done animation since using assembler on my Atari 130XE (hooray for page flipping and player/missile graphics!) Advice? Here's some of the things I'd like to know: I can draw on any empty widget (like a panel) by fiddling with it's OnPaint handler, right? That's how I'd draw a custom widget. Is there a better technique than this? Is there a page-flipping technique for this kind of thing in Windows Forms? I'm not looking for a high frame rate, just as little flicker/drawing as necessary. Thanks. Post Mortem Edit ... "a couple of coding days later" Well, the project is done. The links below came in handy although a couple of them were 404. (I wish SO would allow more than one reply to be marked "correct"). The biggest problem I had to overcome was flickering, and a persistent bug when I tried to draw on the form directly. Using the OnPaint event for the Form: bad idea. I never got that to work; lots of mysterious errors (stack overflows, or ArgumentNullExceptions). I wound up using a panel sized to fill the form and that worked fine. Using the OnPaint method is slow anyway. Somewhere online I read that building the PaintEventArgs was slow, and they weren't kidding. Lots of flickering went away when I abandoned this. Skip the OnPaint/Invalidate() and just paint it yourself. Setting all of the "double buffering" options on the form still left some flicker that had to be fixed. (And I found conflicting docs that said "set them on the control" and "set them on the form". Well controls don't have a .SetStyle() method.) I haven't tested without them, so they might be doing something (this is the form): this.SetStyle(ControlStyles.UserPaint, true); this.SetStyle(ControlStyles.OptimizedDoubleBuffer, true); this.SetStyle(ControlStyles.AllPaintingInWmPaint, true); So the workhorse of the code wound up looking like (pf is the panel control): void PaintPlayField() { Bitmap bufl = new Bitmap(pf.Width, pf.Height); using (Graphics g = Graphics.FromImage(bufl)) { g.FillRectangle(Brushes.Black, new Rectangle(0, 0, pf.Width, pf.Height)); DrawItems(g); DrawMoreItems(g); pf.CreateGraphics().DrawImageUnscaled(bufl, 0, 0); } } And I just called PaintPlayField from the inside of my Timer loop. No flicker at all.

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  • RAIDZ vs RAID1+0

    - by Hiro2k
    Hi guys I just got 4 SSDs for my FreeNAS box. This server is only used to serve a single iSCSI extent to my Citrix XenServer pool and was wondering if I should setup them up in a RAIDZ or a RAID 1+0 configuration. This isn't used for anything in production, just for my test lab so I'm not sure which one is going to be better in this scenario. Will I see a major difference in speed or reliability? Currently the server has three 500GB Western Digital Blue drives and it's dog slow when I deploy a new version of our software on it, hence the upgrade.

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  • Can Windows log CryptoAPI CRL timouts?

    - by makerofthings7
    We have several .NET applications that occasionally "act slow" with no CPU or disk access. I suspect that they are hung up on authentication when trying to validate the certificate, since the timeout is almost 20 seconds. As per this MSFT article Most applications do not specify to CryptoAPI to use a cumulative time-out. If the cumulative time-out option is not enabled, CryptoAPI uses the CryptoAPI default setting which is a time-out of 15 seconds per URL. If the cumulative time-out option specified by the application, then CryptoAPI will use a default setting of 20 seconds as the cumulative timeout. The first URL receives a maximum timeout of 10 seconds. Each subsequent URL timeout is half of the remaining balance in the cumulative timeout value. Since this is a service, how can I detect and log CryptoAPI hangs for applications I have sourcecode to, and also 3rd party

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  • Restoring Time Machine from two Macs onto one (new) mac

    - by Dan
    My parents used to have two Macs...a "iLamp-style" iMac for my Dad, and an iBook G4 for my Mom. A while back, I had setup the iMac to have an external Firewire Hard Drive for a Time Machine Volume, and backed up both the iMac and iBook to that drive. Recently, the iBook died and the iMac was really slow to work with. So my parents decided to replace the iBook with an iPad, and also purchased a Mac Mini. I need to help my parents get their data from their two computers (backed up by Time Machine) onto the same machine. Pretty much everything is identical between the two systems (same apps, etc), however, they both have individual email accounts and photos that they want to retain. Is it possible to do two Time Machine restores onto one computer?

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  • How to set _optimizer_search_limit and _optimizer_max_permutations in Oracle10g.

    - by user52856
    I am working on a product that must support both MSSQL and Oracle (10g and 11g). I have some very complex queries that seem to run without issue on MSSQL 2005/2008, but very, very slow with Oracle. The CPU on the oracle server skyrockets for long periods of time, and it seems like the optimizer may be trying to find the best execution plan for the very complex query. I did some Googling to figure out how to limit the amount of time the optimizer spends on this, and came up with _optimizer_search_limit and _optimizer_max_permutations. Both of these parameters are hidden in Oracle 10g, and setting them in init.ora doesn't seem to make any difference. How do I set these parameters in Oracle. Or am I just totally barking up the wrong tree with the assumption that the optimizer is spending several minutes finding an execution plan? Thanks.

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  • Hide account from login screen but can be used in UAC

    - by tvanover
    So I have a Windows 7 home machine with 2 user accounts. One is a standard user account and one is an administrator account. Now this is going to be put in the hands of a very low-tech user so I don't want them to be able to see the administrator account on logon, but they want to have a password to prevent someone else from using the machine. My goal is that when the user turns on the computer, they are presented with their login. After logging in to their non-administrator account, if something needs to be installed then the administrator account can be used through UAC. I have tried creating the reg key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList and adding a dword of the account name and set it to 0. It succeeded in hiding the account from th login screen. As well as hiding it from UAC. So it fails the second requirement, of being able to run things as administrator through UAC. Also since I didn't set an administrator password (left it blank) it seems that I have completely locked myself out of the machine since runas doesn't accept blank passwords. So I also cannot undo it, and have quite effectively bricked the install, prompting an OS reinstall. This is Windows 7 Home, so there is no Users management console.

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  • Queston about torrents

    - by c0mrade
    Why do my torrents go at rate 25/30 kb/s and my regular http downloads rate up to 300 kb/s .. is my ISP to blame for this, I meant torrents have like thousand seeders and again its very slow.How are they blocking torrent speed, can I bypass it? @gekkz Results : * There's no indication that your ISP rate limits all downloads at port 6881. In our test, a TCP download on a BitTorrent port achieved at least 392 Kbps while a TCP download on a non-BitTorrent port achieved at least 223 Kbps. You can find details here. * There's no indication that your ISP rate limits all uploads at port 6881. In our test, a TCP upload on a BitTorrent port achieved at least 314 Kbps while a TCP upload on a non-BitTorrent port achieved at least 191 Kbps. You can find details here.

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  • MySql Replication with a star topology

    - by Riotopsys
    My company currently operates in 3 separate locations connected by slow vpn links. Each site hosts a dedicated MySql server. I need to aggregate the data from all three of them onto a single server for corporate reporting. The powers that be have stated I cannot use circular replication or federated tables. Is there a third party tool for MySql that can replicate from multiple masters? Basically the diagram would be a daisy with the reporting server slave at center with multiple replication connections coming in from the master sites on the petals.

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