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• Mixed Solaris 10 and 11 versions in logical domains on the same server

  - by jsavit

  One question that comes up frequently is whether you can mix Solaris 10 and Solaris 11 in different logical domains under Oracle VM Server for SPARC. The answer is yes depending only on the system software requirements for the underlying hardware platform. Different versions of Solaris 10 and 11 can exist side-by-side on the same server and can act as control, service, I/O or guest domains subject only to the minimum software levels documented in the System Requirements section of the Oracle VM Server for SPARC Release Notes. Here's an example just taken from a running system. First, here's the control domain, which is running Solaris 10. I've highlighted a guest running Solaris 11. # uname -a SunOS atl-sewr-24 5.10 Generic_147440-01 sun4v sparc SUNW,SPARC-Enterprise-T5220 # ldm -V Logical Domains Manager (v 2.1) Hypervisor control protocol v 1.7 Using Hypervisor MD v 1.3 System PROM: Hypervisor v. 1.10.0 @(#)Hypervisor 1.10.0 2011/04/27 16:19\015 # ldm list NAME STATE FLAGS CONS VCPU MEMORY UTIL UPTIME primary active -n-cv- SP 16 4G 1.6% 120d 17h atl-sewr-pool-148 active -n---- 5001 8 2G 0.1% 119d 21h atl-sewr-pool-152 active -n---- 5000 8 4G 0.2% 112d 19h atl-sewr-pool-154 active -n---- 5002 8 2G 0.1% 120d 15h atl-sewr-pool-155 active -n---- 5003 16 2G 0.0% 26d 14h 30m This system is running Oracle VM Server 2.1 with a Solaris 10 control domain. Hmm, I should update this machine to 2.2 when I get a few free moments. Upgrading is very straightforward. Here's a display logging into the highlighted guest: Last login: Mon May 21 10:18:16 2012 from dhcp-adc-twvpn- Oracle Corporation SunOS 5.11 11.0 November 2011 sewr@atl-sewr-pool-152:~$ uname -a SunOS atl-sewr-pool-152 5.11 11.0 sun4v sparc SUNW,SPARC-Enterprise-T5220 sewr@atl-sewr-pool-152:~$ cat /etc/release Oracle Solaris 11 11/11 SPARC Copyright (c) 1983, 2011, Oracle and/or its affiliates. All rights reserved. Assembled 18 October 2011 sewr@atl-sewr-pool-152:~$ sudo virtinfo -ct Password: Domain role: LDoms guest Control domain: atl-sewr-24 sewr@atl-sewr-pool-152:~$ That's running the GA version of Solaris 11, so I probably should update that some time too. Note the use of the virtinfo -ct command that lets the guest get information about the hosting environment. Summary You can mix and match versions of Solaris in logical domains. All the different combinations work: Solaris 10 and/or Solaris 11 control and service domains with Solaris 10 and/or Solaris 11 guests. Mixing different guest OS levels on the same server is one of the traditional reasons for using virtual machines in the first place since virtual machines were invented some 40 years ago, used to run production and test systems in parallel while upgrading OS levels. This can easily be done with Oracle VM Server for SPARC (Logical Domains).

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• Why don't %MEM values add up to mem in top?

  - by ben

  I'm currently debugging performance issues with my VPS and for that I'm trying to understand which of the processes eat the most memory. Reading top, here's what I get: Mem: 366544k total, 321396k used, 45148k free, 380k buffers Swap: 1048572k total, 592388k used, 456184k free, 7756k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 12339 ruby 20 0 844m 74m 2440 S 0 20.8 0:24.84 ruby 12363 ruby 20 0 844m 73m 1576 S 0 20.6 0:00.26 ruby 21117 ruby 20 0 171m 33m 1792 S 0 9.3 2:03.98 ruby 11846 ruby 20 0 858m 21m 1820 S 0 6.0 0:09.15 ruby 21277 ruby 20 0 219m 11m 1648 S 0 3.2 2:00.98 ruby 792 root 20 0 266m 10m 1024 S 0 3.0 1:40.06 ruby 532 mysql 20 0 234m 4760 1040 S 0 1.3 0:41.58 mysqld 793 root 20 0 250m 4616 984 S 0 1.3 1:20.55 ruby 586 root 20 0 156m 4532 848 S 0 1.2 6:17.10 god 12315 ruby 20 0 175m 2412 1900 S 0 0.7 0:07.55 ruby 3844 root 20 0 44036 2132 1028 S 0 0.6 1:08.22 ruby 10939 ruby 20 0 179m 1884 1724 S 0 0.5 0:08.33 ruby 4660 ruby 20 0 229m 1592 1440 S 0 0.4 2:55.46 ruby 3879 nobody 20 0 37428 964 520 S 0 0.3 0:01.99 nginx As you can see my memory is about 90% used (which is my issue) but when you add up the %MEM values, it goes to about 50-60% only. Same thing, RES doesn't add up to ~350mb. Why? Am I misunderstanding their meaning? Thanks

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• Finding out which higher level function is making lots of low level calls

  - by ming yeow

  Hi folks, I have a function that is being called more than a thousand times, slowing everything down. However, it is a low level function, and do not know which of my high level function is lopping and making these calls. How can i find out?

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• one codeigniter controller named site needs to handle multiple domains

  - by Mauricio Webtailor

  Got a controller in codeigniter who handles different sub sites. site/index/1 fetches content for subsite a site/index/2 fetches content for subsite b Now we decided to register domain names for these sub sites. so what we need: http://www.subsite1.com - default controller should be site/index/1 without the site/index/1 in the uri http://www.subsite2.com - default controller should be site/index/2 without the site/index/2 in the uri I fiddled and tried to play with routes.php but getting nowhere.. Can somebody point me in the right direction?

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• JPicker how to keep window on top

  - by msj121

  I am wondering if there is an easy way to keep this popup window (span) JPicker (built on JQuery) on top of other modal windows or divs? Zindex, is there a way to make sure the zindex is always on top? Thanks

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• How to keep window on top

  - by msj121

  I am wondering if there is an easy way to keep this popup window (span) JPicker (built on JQuery) on top of other modal windows or divs? Zindex, is there a way to make sure the zindex is always on top? Thanks

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• Top 10 unless count is zero

  - by datatoo

  This is probably easy, but eludes me. SQL server2005 I want to show top 100 but if there are not 100 only want to show those and not include zero counts in the result SELECT TOP (100) UserName, FullName_Company, FullName, (SELECT COUNT(*) FROM dbo.Member_Ref WHERE (RefFrom_UserName = dbo.view_Members.UserName) AND (RefDate >= '5/1/2010') AND (RefDate <= '6/1/2010')) AS RefFromCount FROM dbo.view_Members WHERE (MemberStatus = N'Active') ORDER BY RefFromCount DESC I have tried using Group By and HAVING COUNT(*)0 all with the same wrong results

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• enable email on Godaddy when using Zerigo on Heroku hosted app

  - by joelmaranhao

  A little recap of what I have done ... and then my questions Q1, Q2 and Q3 1 - I developed a RoR app that I deployed on Heroku. biowatts.heroku.com 2 - I bought a domain name at GoDaddy: biowattsonline.com 3 - I am using Zerigo addon as for the DNS heroku addons:add custom_domains heroku addons:add zerigo_dns:basic 4 - Added my domains in Heroku heroku domains:add biowattsonline.com heroku domains:add www.biowattsonline.com and subdomains heroku domains:add calculator.biowattsonline.com Q1: Where do we configure the forward to http://biowattsonline.com/biogas_calculator ? 5 - Configured GoDaddy adding the Zerigo domains In the Nameservers section a.ns.zerigo.net b.ns.zerigo.net c.ns.zerigo.net d.ns.zerigo.net e.ns.zerigo.net The GoDaddy DNS section is empty: "Not hosted here" Ok this works all fine ... http://biowattsonline.com is correctly found 6 - Subdomain forward I want calculator.biowattsonline.com to be forwarded to biowattsonline.com/biogas_calculator Q2: So I created the forward in GoDaddy ... but is that correct? 7 - GoDaddy email Q3: I have one free email account with go GoDaddy, only now that I am using Zerigo I don't know how configure GoDaddy to make it work again?... because it work with the default values Any ideason Q1, Q2 and Q3? Thanks, Joel

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• Best Practices - which domain types should be used to run applications

  - by jsavit

  This post is one of a series of "best practices" notes for Oracle VM Server for SPARC (formerly named Logical Domains) One question that frequently comes up is "which types of domain should I use to run applications?" There used to be a simple answer in most cases: "only run applications in guest domains", but enhancements to T-series servers, Oracle VM Server for SPARC and the advent of SPARC SuperCluster have made this question more interesting and worth qualifying differently. This article reviews the relevant concepts and provides suggestions on where to deploy applications in a logical domains environment. Review: division of labor and types of domain Oracle VM Server for SPARC offloads many functions from the hypervisor to domains (also called virtual machines). This is a modern alternative to using a "thick" hypervisor that provides all virtualization functions, as in traditional VM designs, This permits a simpler hypervisor design, which enhances reliability, and security. It also reduces single points of failure by assigning responsibilities to multiple system components, which further improves reliability and security. In this architecture, management and I/O functionality are provided within domains. Oracle VM Server for SPARC does this by defining the following types of domain, each with their own roles: Control domain - management control point for the server, used to configure domains and manage resources. It is the first domain to boot on a power-up, is an I/O domain, and is usually a service domain as well. I/O domain - has been assigned physical I/O devices: a PCIe root complex, a PCI device, or a SR-IOV (single-root I/O Virtualization) function. It has native performance and functionality for the devices it owns, unmediated by any virtualization layer. Service domain - provides virtual network and disk devices to guest domains. Guest domain - a domain whose devices are all virtual rather than physical: virtual network and disk devices provided by one or more service domains. In common practice, this is where applications are run. Typical deployment A service domain is generally also an I/O domain: otherwise it wouldn't have access to physical device "backends" to offer to its clients. Similarly, an I/O domain is also typically a service domain in order to leverage the available PCI busses. Control domains must be I/O domains, because they boot up first on the server and require physical I/O. It's typical for the control domain to also be a service domain too so it doesn't "waste" the I/O resources it uses. A simple configuration consists of a control domain, which is also the one I/O and service domain, and some number of guest domains using virtual I/O. In production, customers typically use multiple domains with I/O and service roles to eliminate single points of failure: guest domains have virtual disk and virtual devices provisioned from more than one service domain, so failure of a service domain or I/O path or device doesn't result in an application outage. This is also used for "rolling upgrades" in which service domains are upgraded one at a time while their guests continue to operate without disruption. (It should be noted that resiliency to I/O device failures can also be provided by the single control domain, using multi-path I/O) In this type of deployment, control, I/O, and service domains are used for virtualization infrastructure, while applications run in guest domains. Changing application deployment patterns The above model has been widely and successfully used, but more configuration options are available now. Servers got bigger than the original T2000 class machines with 2 I/O busses, so there is more I/O capacity that can be used for applications. Increased T-series server capacity made it attractive to run more vertical applications, such as databases, with higher resource requirements than the "light" applications originally seen. This made it attractive to run applications in I/O domains so they could get bare-metal native I/O performance. This is leveraged by the SPARC SuperCluster engineered system, announced a year ago at Oracle OpenWorld. In SPARC SuperCluster, I/O domains are used for high performance applications, with native I/O performance for disk and network and optimized access to the Infiniband fabric. Another technical enhancement is the introduction of Direct I/O (DIO) and Single Root I/O Virtualization (SR-IOV), which make it possible to give domains direct connections and native I/O performance for selected I/O devices. A domain with either a DIO or SR-IOV device is an I/O domain. In summary: not all I/O domains own PCI complexes, and there are increasingly more I/O domains that are not service domains. They use their I/O connectivity for performance for their own applications. However, there are some limitations and considerations: at this time, a domain using physical I/O cannot be live-migrated to another server. There is also a need to plan for security and introducing unneeded dependencies: if an I/O domain is also a service domain providing virtual I/O go guests, it has the ability to affect the correct operation of its client guest domains. This is even more relevant for the control domain. where the ldm has to be protected from unauthorized (or even mistaken) use that would affect other domains. As a general rule, running applications in the service domain or the control domain should be avoided. To recap: Guest domains with virtual I/O still provide the greatest operational flexibility, including features like live migration. I/O domains can be used for applications with high performance requirements. This is used to great effect in SPARC SuperCluster and in general T4 deployments. Direct I/O (DIO) and Single Root I/O Virtualization (SR-IOV) make this more attractive by giving direct I/O access to more domains. Service domains should in general not be used for applications, because compromised security in the domain, or an outage, can affect other domains that depend on it. This concern can be mitigated by providing guests' their virtual I/O from more than one service domain, so an interruption of service in the service domain does not cause an application outage. The control domain should in general not be used to run applications, for the same reason. SPARC SuperCluster use the control domain for applications, but it is an exception: it's not a general purpose environment; it's an engineered system with specifically configured applications and optimization for optimal performance. These are recommended "best practices" based on conversations with a number of Oracle architects. Keep in mind that "one size does not fit all", so you should evaluate these practices in the context of your own requirements. Summary Higher capacity T-series servers have made it more attractive to use them for applications with high resource requirements. New deployment models permit native I/O performance for demanding applications by running them in I/O domains with direct access to their devices. This is leveraged in SPARC SuperCluster, and can be leveraged in T-series servers to provision high-performance applications running in domains. Carefully planned, this can be used to provide higher performance for critical applications.

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• Can someone sue me/take my domain?

  - by qwerty

  I have found a great domain that isn't in use, but the .com and .net domains are already taken. There's nothing on the domains though, it just says they are registered with Network Solutions and are under construction. My question is: If i buy the .org version of the domain, and the .com guys later start a company on that domain, can they sue me or make me change name because it is too similar to their .com domain? Should i avoid using domains that have already been registered but with a different ending?

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• How to transfer domain from Godaddy to another provider

  - by licorna

  I'm currently using godaddy for all of my company domains, and I'm very unsatisfied with their service, specially with their site, so we are trying to migrate those domains to another provider. The question is, How do I transfer my domains to another domain registrar? I'm not talking about transferring domain records (A, MX...) but to use the same domains with another provider, and redo all the configuration again. For example, one of our blogs is hosted in Slicehost and we feel very confortable with their record editing tool. As I have read prowebmasters I can see other people not very satisfied with Godaddy service. Thanks! edit: Thanks for the answers, they were all very informative.

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• SEO for duplicate sites with multiple domain extensions

  - by lock

  I am running business in different nations and I got domains for example www.mydomain.com www.mydomain.us www.mydomain.ca www.mydomain.uk www.mydomain.com.au So, if I run same website with same content (of course there will be little changes like address, etc.) as all these domains has same content will it be considered as spam or will the domains rank well as per the country? Also, is there solutions if Google considers this as spam.

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• log4j additivity, category logging level and appender threshold

  - by GBa

  I'm having troubles understanding the relation between additivity, category logging level and appender threshold... here's the scenario (my log4j.properties file): log4j.category.GeneralPurpose.classTypes=INFO, webAppLogger log4j.additivity.GeneralPurpose.classTypes=true log4j.category.GeneralPurpose=ERROR, defaultLogger log4j.additivity.GeneralPurpose=false log4j.appender.webAppLogger=org.apache.log4j.RollingFileAppender log4j.appender.webAppLogger.File=webapps/someWebApp/logs/webApp.log log4j.appender.webAppLogger.MaxFileSize=3000KB log4j.appender.webAppLogger.MaxBackupIndex=10 log4j.appender.webAppLogger.layout=org.apache.log4j.PatternLayout log4j.appender.webAppLogger.layout.ConversionPattern=%d [%t] (%F:%L) %-5p - %m%n log4j.appender.webAppLogger.Encoding=UTF-8 log4j.appender.defaultLogger=org.apache.log4j.RollingFileAppender log4j.appender.defaultLogger.File=logs/server.log log4j.appender.defaultLogger.MaxFileSize=3000KB log4j.appender.defaultLogger.MaxBackupIndex=10 log4j.appender.defaultLogger.layout=org.apache.log4j.PatternLayout log4j.appender.defaultLogger.layout.ConversionPattern=%d [%t] (%F:%L) %-5p - %m%n log4j.appender.defaultLogger.Encoding=UTF-8 insights: category GeneralPurpose.classTypes is INFO category GeneralPurpose.classTypes has additivity TRUE category GeneralPurpose is ERROR category GeneralPurpose has additivity FALSE with the current configuration I would have assumed that INFO messages sent to category GeneralPurpose.classTypes.* would be only logged to webAppLogger since the parent logger (cateogry) is set with ERROR level logging. However, this is not the case, the message is logged twice (one in each log file). Looks like the ERROR logging level for the parent category is not taken into consideration when the event is sent as part of additivity... is my observation correct or am I missing something ? how should I alter the configuration in order to achieve only ERROR level loggings in server.log ? thanks, GBa.

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• Recursion in the form of a Recursive Func&lt;T, T&gt;

  - by ToStringTheory

  I gotta admit, I am kind of surprised that I didn’t realize I could do this sooner.  I recently had a problem which required a recursive function call to come up with the answer.  After some time messing around with a recursive method, and creating an API that I was not happy with, I was able to create an API that I enjoy, and seems intuitive. Introduction To bring it to a simple example, consider the summation to n: A mathematically identical formula is: In a .NET function, this can be represented by a function: Func<int, int> summation = x => x*(x+1)/2 Calling summation with an input integer will yield the summation to that number: var sum10 = summation(4); //sum10 would be equal to 10 But what if I wanted to get a second level summation…  First some to n, and then use that argument as the input to the same function, to find the second level summation: So as an easy example, calculate the summation to 3, which yields 6.  Then calculate the summation to 6 which yields 21. Represented as a mathematical formula - So what if I wanted to represent this as .NET functions.  I can always do: //using the summation formula from above var sum3 = summation(3); //sets sum3 to 6 var sum3_2 = summation(sum3); //sets sum3 to 21 I could always create a while loop to perform the calculations too: Func<int, int> summation = x => x*(x+1)/2; //for the interests of a smaller example, using shorthand int sumResultTo = 3; int level = 2; while(level-- > 0) { sumResultTo = summation(sumResultTo); } //sumResultTo is equal to 21 now. Or express it as a for-loop, method calls, etc…  I really didn’t like any of the options that I tried.  Then it dawned on me – since I was using a Func<T, T> anyways, why not use the Func’s output from one call as the input as another directly. Some Code So, I decided that I wanted a recursion class.  Something that I would be generic and reusable in case I ever wanted to do something like this again. It is limited to only the Func<T1, T2> level of Func, and T1 must be the same as T2. The first thing in this class is a private field for the function: private readonly Func<T, T> _functionToRecurse; So, I since I want the function to be unchangeable, I have defined it as readonly.  Therefore my constructor looks like: public Recursion(Func<T, T> functionToRecurse) { if (functionToRecurse == null) { throw new ArgumentNullException("functionToRecurse", "The function to recurse can not be null"); } _functionToRecurse = functionToRecurse; } Simple enough.  If you have any questions, feel free to post them in the comments, and I will be sure to answer them. Next, I want enough. If be able to get the result of a function dependent on how many levels of recursion: private Func<T, T> GetXLevel(int level) { if (level < 1) { throw new ArgumentOutOfRangeException("level", level, "The level of recursion must be greater than 0"); } if (level == 1) return _functionToRecurse; return _GetXLevel(level - 1, _functionToRecurse); } So, if you pass in 1 for the level, you get just the Func<T,T> back.  If you say that you want to go deeper down the rabbit hole, it calls a method which accepts the level it is at, and the function which it needs to use to recurse further: private Func<T, T> _GetXLevel(int level, Func<T, T> prevFunc) { if (level == 1) return y => prevFunc(_functionToRecurse(y)); return _GetXLevel(level - 1, y => prevFunc(_functionToRecurse(y))); } That is really all that is needed for this class. If I exposed the GetXLevel function publicly, I could use that to get the function for a level, and pass in the argument..  But I wanted something better.  So, I used the ‘this’ array operator for the class: public Func<T,T> this[int level] { get { if (level < 1) { throw new ArgumentOutOfRangeException("level", level, "The level of recursion must be greater than 0"); } return this.GetXLevel(level); } } So, using the same example above of finding the second recursion of the summation of 3: var summator = new Recursion<int>(x => (x * (x + 1)) / 2); var sum_3_level2 = summator[2](3); //yields 21 You can even find just store the delegate to the second level summation, and use it multiple times: var summator = new Recursion<int>(x => (x * (x + 1)) / 2); var sum_level2 = summator[2]; var sum_3_level2 = sum_level2(3); //yields 21 var sum_4_level2 = sum_level2(4); //yields 55 var sum_5_level2 = sum_level2(5); //yields 120 Full Code Don’t think I was just going to hold off on the full file together and make you do the hard work…  Copy this into a new class file: public class Recursion<T> { private readonly Func<T, T> _functionToRecurse; public Recursion(Func<T, T> functionToRecurse) { if (functionToRecurse == null) { throw new ArgumentNullException("functionToRecurse", "The function to recurse can not be null"); } _functionToRecurse = functionToRecurse; } public Func<T,T> this[int level] { get { if (level < 1) { throw new ArgumentOutOfRangeException("level", level, "The level of recursion must be greater than 0"); } return this.GetXLevel(level); } } private Func<T, T> GetXLevel(int level) { if (level < 1) { throw new ArgumentOutOfRangeException("level", level, "The level of recursion must be greater than 0"); } if (level == 1) return _functionToRecurse; return _GetXLevel(level - 1, _functionToRecurse); } private Func<T, T> _GetXLevel(int level, Func<T, T> prevFunc) { if (level == 1) return y => prevFunc(_functionToRecurse(y)); return _GetXLevel(level - 1, y => prevFunc(_functionToRecurse(y))); } } Conclusion The great thing about this class, is that it can be used with any function with same input/output parameters.  I strived to find an implementation that I found clean and useful, and I finally settled on this.  If you have feedback – good or bad, I would love to hear it!

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• Top n items in a List ( including duplicates )

  - by Krishnan

  Trying to find an efficient way to obtain the top N items in a very large list, possibly containing duplicates. I first tried sorting & slicing, which works. But this seems unnnecessary. You shouldn't need to sort a very large list if you just want the top 20 members. So I wrote a recursive routine which builds the top-n list. This also works, but is very much slower than the non-recursive one! Question: Which is my second routine (elite2) so much slower than elite, and how do I make it faster ? My code is attached below. Thanks. import scala.collection.SeqView import scala.math.min object X { def elite(s: SeqView[Int, List[Int]], k:Int):List[Int] = { s.sorted.reverse.force.slice(0,min(k,s.size)) } def elite2(s: SeqView[Int, List[Int]], k:Int, s2:List[Int]=Nil):List[Int] = { if( k == 0 || s.size == 0) s2.reverse else { val m = s.max val parts = s.force.partition(_==m) val whole = if( parts._1.size > 1) parts._1.tail:::parts._2 else parts._2 elite2( whole.view, k-1, m::s2 ) } } def main(args:Array[String]) = { val N = 1000000/3 val x = List(N to 1 by -1).flatten.map(x=>List(x,x,x)).flatten.view println(elite2(x,20)) println(elite(x,20)) } }

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• Keep a Window on top with a handy AutoHotkey script

  - by Matthew Guay

  Are you tired of shuffling back and forth between windows to get your work done?  Here’s a handy tool that lets you keep any window always on top when you need it. There are many ways to use multiple windows efficiently, but sometimes it seems you need to keep a smaller one in front of a larger window and they never quite fit right.  Whether you’re trying to use Calculator and a web form at the same time, or see what music is playing while you’re catching up on your news, there’s many scenarios where it can be useful to keep one window always on top.  There are many utilities to do this, but they are often needlessly complicated and bloated.  Here we look at a better solution from Amit, our friend at Digital Inspiration. Always on Top Thanks to AutoHotkey, you can easily always keep any window on top of all the others on your screen.  You can download this as a small exe and run it directly, or can create it with a simple script in AutoHotkey.  For simplicity, we simply downloaded the application and ran it directly. To do this, download Always on Top (link below), and unzip the file. Once you’ve launched it, simply select the window you want to keep on top and press Ctrl+Space.  This program will now stay in front, even when it is not the active window.  Here’s a screenshot of a Hotmail signup dialog in Chrome with Notepad kept on top.  Notice Notepad isn’t the active application, but it is still on top. If you wish to un-pin the window from being on top, simply select the window and press Ctrl+space again.  You can keep multiple windows pinned at once, too, though you may clutter your desktop quickly! Always on Top will keep running in your system tray, and you can exit or suspend it by right-clicking on its tray icon and selecting exit or suspend, respectively. Create Your Own Always on Top Utility with AutoHotkey If you’re a fan of AutoHotkey, you can create your own AutoHotkey script to keep windows on top simply and easily with only one line of code: ^SPACE:: Winset, Alwaysontop, , A Simply create a new file, insert the code, and save it as plaintext with the .ahk file extension.  If you have AutoHotkey installed, simply double-click this file for the exact same functionality as the premade version. Conclusion This is a great way to keep a window handy, and it can be beneficial in many scenarios.  For instance you can use it to copy data from a PDF or image into a form or spreadsheet, and it saves a lot of clicks and time.  Links: Download Always on Top from Digital Inspiration Download AutoHotkey if you want to make it yourself Similar Articles Productive Geek Tips Get the Linux Alt+Window Drag Functionality in WindowsGet Mac’s Hide Others (cmd+opt+H) Keyboard Shortcut for WindowsAdd "Run as Administrator" for AutoHotkey Scripts in Windows 7 or VistaKeyboard Ninja: Pop Up the Vista Calendar with a Single HotkeyKeyboard Ninja: Assign a Hotkey to any Window TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional OutSync will Sync Photos of your Friends on Facebook and Outlook Windows 7 Easter Theme YoWindoW, a real time weather screensaver Optimize your computer the Microsoft way Stormpulse provides slick, real time weather data Geek Parents – Did you try Parental Controls in Windows 7?

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• Move Firefox’s Tab Bar to the Top

  - by Asian Angel

  Would you prefer to have Firefox’s Tab Bar located at the top of the browser instead of its’ default location? See how easy it is to move the Tab Bar back and forth between the top and current positions “flip switch style” with the Tabs On Top extension. Note: Tabs On Top extension supports multi-row feature in TabMixPlus. Before You can see the “Tab Bar” in its’ default location here in our test browser…not bad but what if you prefer having it located at the top of the browser? After As soon as you have installed the extension and restarted Firefox the “Tab Bar” will have automatically moved to the top of the browser. You will most likely notice a slight decrease in tab height as well (which occurred during our tests). To move the “Tab Bar” back and forth between the top and default locations just select/deselect “Tab Bar on top” in the “Toolbars Context Menu”. You can quickly reduce the size of the upper UI after hiding some of the other toolbars and go even further if you like using extensions that will hide the “Title Bar”. This is definitely a good UI matching extension for anyone using a Chrome based theme in Firefox. Conclusion If you are unhappy with default location for Firefox’s “Tab Bar” then this extension will certainly provide an alternative option for you. Links Download the Tabs On Top extension (Mozilla Add-ons) Similar Articles Productive Geek Tips Use the Keyboard to Move Items Up or Down in Microsoft WordAdd Copy To / Move To on Windows 7 or Vista Right-Click MenuBring Misplaced Off-Screen Windows Back to Your Desktop (Keyboard Trick)Moving Your Personal Data Folders in Windows Vista the Easy WayAdd Copy To / Move To to the Windows Explorer Right Click Menu TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional Live PDF Searches PDF Files and Ebooks Converting Mp4 to Mp3 Easily Use Quick Translator to Translate Text in 50 Languages (Firefox) Get Better Windows Search With UltraSearch Scan News With NY Times Article Skimmer SpeedyFox Claims to Speed up your Firefox

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• Is there ever a time when creating a level/world editor with your game is a bad idea?

  - by Borgel

  I have created a few smaller games on my own in the past. My approach has always been to create a completed editor where it has all the functionality needed to save a level file and load it into the game. This has always made most sense to me but I keep hearing from people that a game is never fully done in the editor. I have never worked in a game development team and so I don't have first hand experience, but not adding everything needed to make the game to the editor just seams wrong. Am I missing something? Is there ever a reason not to add a tool to the editor?

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• Jquery sortable each level for it own

  - by Y.G.J

  i have this code: link text i want my UL and LI to have level (for now i guess only second level but who knows) and to be able to sort parent with all siblings and childs between their siblings

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• Why better isolation level means better performance in MS SQL Server

  - by Oleg Zhylin

  When measuring performance on my query I came up with a dependency between isolation level and elapsed time that was surprising to me READUNCOMMITTED - 409024 READCOMMITTED - 368021 REPEATABLEREAD - 358019 SERIALIZABLE - 348019 Left column is table hint, and the right column is elapsed time in microseconds (sys.dm_exec_query_stats.total_elapsed_time). Why better isolation level gives better performance? This is a development machine and no concurrency whatsoever happens. I would expect READUNCOMMITTED to be the fasted due to less locking overhead.

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• Delphi low-level machine parameter access

  - by tonyhooley.mp

  There are many very low-level parameters measured by PCs and their processors (e.g. core temperatures, fan-speeds, voltage levels at various parts of the motherboard and processor internals) which are available and displayed by the BIOS, and by some aaplication programs. How does one access these low-level (real-time) data via Delphi? Is there a library? Is there a Windows API?

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• Set compression level when generating a ZIP file using RubyZip

  - by Vincent Robert

  Hi, I have a Ruby program that zips a directory tree of XML files using the rubyzip gem. My problem is that the file is starting to be heavy and I would like to increase the compression level, since compression time is not an issue. I could not find in the rubyzip documentation a way to specify the compression level for the created ZIP file. Anyone know how to change this setting?

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• NHibernate 2nd level cache provider for NHibernate 2.1.1.4000

  - by Rippo

  I am using s#arp which is built against NHibernate 2.1.1.4000, However I would like to use NHibernate.Caches.SysCache as my second level cache. However the Nhibernate contrib caches are built against NHibernate 2.1.2.4000 which obviously gives me a problem. Can anyone point me to a URL that I can download NHibernate.Caches.SysCache.dll that is built against NHibernate 2.1.1.4000 Or is there another 2nd level cache provider that is easy to implement and is built against NHibernate 2.1.1.4000 Thanks

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• Full list of top-like tool family for perfomance monitoring in linux: iftop iotop htop atop more? [closed]

  - by Yauhen Yakimovich

  Top-like utilities are extremely handful in my work and I want to make sure I am not missing any of them. Please extend the following list of performance monitoring (top-like) family of linux tools: top - original tool htop - adds support to multicore/cpu iotop - input/output monitoring iftop - network monitoring atop - merges previous elements into a single overview slabtop – displays a listing of the top caches ? The only criteria - maturity and similarity in function/style.

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• Insulate hosted client domains from server IP address change?

  - by babtek

  I will be hosting web content for many client domains on a single IP address (with a web hosting company, not inhouse machine). Initially, I must give client some information to configure their registrar to point the domain to my server. I want client domains insulated from a potential IP address change, so if I change hosts/IP address they don't have to reconfigure anything with their registrar. Is this reasonably possible without running my own nameserver? If so, what would be the smartest way to make it happen? Instruct clients to make CNAME record? Use some type of DNS management service that clients would use as a nameserver?

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