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1. Top results related to what are the disadvantages of microsoft windows 8

   • What are the main disadvantages of Windows pipes for inter-process communication?

     Top Answer

     Answered Feb 08, 2013 · 14 votes

     You can create two-way anonymous pipes using CreatePipe() Win32 API call, so piping input/output is not the only way. You simply get a new file handle you can give to the other process.

     Anonymous pipes are based on shared memory, but do not support asynchronous operations (through ReadFileEx, ReadFileWrite). Performance issues (disadvantages) are thus 1) synchronous operation, 2) memory copying, 3) interprocess synchronization. Generally, "raw" shared memory (memory mapped file without an actual backing file) and named pipes will be faster, and sockets and Window messages will be slower (than anonymous pipes).

     You cannot use I/O Completion Ports (IOCP) with anonymous pipes, instead you'll have to "poll" the pipe, incurring extra context switches. In addition to serializing the data, the serialized data has to be copied around in memory, as you cannot write directly to the shared memory. One process also has to wait for another, implying that the other process has to signal an interprocess synchronization primitive. Performance depends heavily on the size of the messages (ratio of read/write calls to amount of data sent), because for each read/write the process has to make context switches and possibly spin/sleep.

     All methods except "raw" shared memory require memory copying and some sort of interprocess signaling (synchronization), so the main disadvantage of anonymous pipes is synchronous operation. You'll hit the ceiling when transmitting large number of messages, when the CPU spends most of its time doing context switches.

     Performance-wise, named pipes are better because you can have worker thread(s) processing async notifications using IOCP, and can even receive multiple messages with one call, thus reducing the API overhead. If making your own components, the extra trouble from giving a name to the pipe is well worth the trouble (and you can even connect across networks). Later Windows versions implement special routing for local sockets, which also do support IOCP.

     The fastest method would be to use shared memory directly, but then you will have to take care of interprocess synchronization yourself. It's possible to implement lock-free pipes yourself, but in case you're not constantly transmitting data, you'll still have to use synchronization primitives to notify/wake the listening process up.

     Also note that using files does not imply that you would be limited by disk speed, as you can use memory mapped files and even with normal files, the cache manager handles the reading/writing. The other methods (RPC, clipboard, etc) are based on these "standard" methods, which means they'll just add some extra layer of protocol and are meant to be easier/more helpful, or more suitable for some programming environment (but not to be faster).

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     1/5

   • What are the disadvantages of the ECS (Entity-Component-System) architectural pattern, compared to OOP (or other paradigms)?

     Top Answer

     Answered Dec 23, 2019 · 11 votes

     Here's a few points I gathered from my research:

     • Systems are very dependent on their ordering. Introducing new systems in between already existing Systems can be a challenge.
     • You also need to plan ahead your data as much as possible, since they will potentially be used by a LOT of systems. Changing the content of components could potentially break quite a few systems.
     • Although it's easy to debug the flow of a system, it's also harder to debug single component changes and not have a global view of what happened to the entity across all it's components. I'm not sure if Unity introduced new debug features for this.
     • If you're planning to use ECS in your team, introducing a new paradigm to devs that are not familiar with it could be a challenge. The onboarding time could be longer with more overhead.

     Hope this gives you a good starting point.

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     2/5

   • What are the disadvantages of targeting the JVM instead of x86?

     Top Answer

     Answered Jun 14, 2010 · 4 votes

     Targeting the JVM is a pretty tried and tested approach. The fact that Clojure, Scala, JRuby and many other languages have done so successfully should give you some reassurance.

     My view overall is that the JVM is probably the best target at the moment for new/experimental languages, particularly if you hope to achieve cross platform capability while taking advantage of a truly fantastic JIT compiler and a wealth of very powerful libraries.

     Having said that, the main disadvantages you may encounter targeting the JVM are in my opinion as follows:

     • Lack of tail recursion support at the bytecode level. There are ways around this (e.g. see Clojure's "recur" special form) but it is annoying for some language implementations, particularly functional languages. Will probably eventually be fixed in future versions of Java.
     • Slightly obvious, but you need a JVM installed on your client. Usually not a problem nowadays, but there are still cases where this can be tricky.
     • Primitives (int, long, float etc.) in Java behave differently from the rest of the object system. Again you can work around this but it is some extra hassle for language implementers.

     Some potentially useful/interesting links:

     • ASM bytecode analysis and manipulation framework. This is a great tool, I believe it is what what Clojure uses under the hood.
     • Clojure source code

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     3/5

   • what are the disadvantages of mapreduce?

     Top Answer

     Answered Sep 03, 2013 · 27 votes

     I would rather ask when mapreduce is not a suitable choice? I don't think you would see any disadvantage if you are using it as intended. Having said that, there are certain cases where mapreduce is not a suitable choice :

     • Real-time processing.
     • It's not always very easy to implement each and everything as a MR program.
     • When your intermediate processes need to talk to each other(jobs run in isolation).
     • When your processing requires lot of data to be shuffled over the network.
     • When you need to handle streaming data. MR is best suited to batch process huge amounts of data which you already have with you.
     • When you can get the desired result with a standalone system. It's obviously less painful to configure and manage a standalone system as compared to a distributed system.
     • When you have OLTP needs. MR is not suitable for a large number of short on-line transactions.

     There might be several other cases. But the important thing here is how well are you using it. For example, you can't expect a MR job to give you the result in a couple of ms. You can't count it as its disadvantage either. It's just that you are using it at the wrong place. And it holds true for any technology, IMHO. Long story short, think well before you act.

     If you still want, you can take the above points as the disadvantages of mapreduce :)

     HTH

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     4/5

   • what are the disadvantages of H264?

     Top Answer

     Answered Dec 13, 2010 · 7 votes

     Encoding and decoding complexity: H.264 encoding and decoding is more computationally complex than some other codecs such as MPEG-4 Part 2 (DivX, XviD). However, the compression performance of H.264 is significantly better than these so it depends on what is more important to you.

     This is becoming less of a problem as more devices are including hardware support for H.264.

     Error Resiliency: There are some things in H.264 to deal with bit errors, but often they are not used and a single bit error can still have a catastrophic effect. From what I have seen in my study of video codecs, error resiliency seems to being pushed to another layer in most systems. That is, the video codec is designed for maximum compression, and another layer is added on top of the video data to take care of bit errors. That way those who don't need the error resiliency don't pay for it with lower compression rates.

     A common example of this is the DVB standard which uses MPEG-2 or H.264 coded video inside an MPEG-2 Transport Stream that contains a forward error correction scheme.

     Licensing and Royalties: I am no expert (or even reasonably knowledgeable) in this area, but depending on your use case, you may have to pay some kind of royalty to encode to H.264 legally. See this.

     Other than these, I really don't see any other disadvantages of H.264. It seems to be the state of the art for anything from internet quality streamed video to Blue-Ray HD video.

     I can't really comment with regards to the last question (packet/circuit switched networks, interworking between vendors, etc.) since I have never actually built a hardware system to work with H.264. I will say that as long as the encoder creates a valid H.264 stream and you have a decoder that fully implements the standard, you should have no problem getting things to work together. This is the whole point of having a standard.

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3. www.geeksforgeeks.org › advantages-andAdvantages and disadvantages of Windows operating system

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   Dec 28, 2020 · Disadvantages of Windows operating system : Infection assaults – Windows have a high measure of programmer assaults. The programmers can without much of a stretch break windows security. So windows clients are reliant on the enemy of infection programming and need to pay month to month charges to organizations to ensure their information.

4. www.techadvisor.com › article › 715244Windows 8 vs Windows 10 Comparison: Which is Better? - Tech ...

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   • Windows 8 vs 10: UK Price and Availability
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   Confusingly, there are three different types of operating system that could reasonably be called ‘Windows 8’. Four, if you count 64- and 32-bit versions. Windows 8 itself is x86 software built for use with PCs and laptops, as well as some tablets. Then there is Windows RT, which was used on other tablets, primarily Microsoft’s own Surface and Surfa...

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5. www.careerprofiles.com › career-advice › the-prosThe pros and cons of Windows 8 - Profiles

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   Feb 11, 2013 · Cons of switching to Windows 8. Developers may find that there are a number of characteristics of Windows 8 that may cause minor headaches. The lack of a traditional start menu for one, could cause problems. It takes time to acclimate – requiring that workers may need training.

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   Jul 4, 2013 · The main disadvantage of Windows 8 is overlapping of Metro and Aero User Interface. Switching between Metro applications and desktop applications is not user-friendly and creates confusion for the users and the developers. There is no way to turn the home screen tiles into icons.

8. www.itpro.com › operating-systems › 25123Windows 10 vs Windows 8.1: Which was the best OS? | ITPro

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   May 17, 2023 · Windows 8 was arguably a failure, particularly given the huge leap that Windows 10 provided. The start menu on Windows 10 is far less jarring, providing modern tools and layouts sprinkled with enough familiarity that users won't feel alienated.

   • Author: Barry Collins

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9. www.laptopmag.com › software › microsoft-windows-8Windows 8 Pro Review | Operating System Reviews | Laptop Mag

   www.laptopmag.com › software › microsoft-windows-8

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   Aug 15, 2012 · Cons. - Competing interfaces lead to confusion. - Few Windows 8 apps for now. - No Start menu. Why you can trust Laptop Mag Our expert reviewers spend hours testing and comparing products and...

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10. www.pcmag.com › reviews › microsoft-windows-81Microsoft Windows 8.1 Review | PCMag

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