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10.07.2016
Top 5 Java Profilers Revealed: Real world data with VisualVM, JProfiler, Java Mission Control, YourKit and Custom tooling. As with all problems which have many solutions, it can often be tricky to determine which is the best solution for you. The wily among you will have noticed that the first image in this blog contains percentages which do not add up to 100%.
Well, from the graph below, you might be able to blame not having enough tools, as therea€™s a definite trend showing that you can find more performance issues if you use multiple tools. As you have seen from the first image in the blog, the top five Java profilers, by usage, in our industry, from our survey results are: VisualVM, JProfiler, Custom tooling, Java Mission Control and YourKit. The memory profiling in YourKit can detect memory leaks and trace the excessive objects back to the GC roots to show you why the objects are not being collected. YourKit, used by 15% of survey respondents didna€™t fare too well on how many performance bugs typically found per release, but it wasna€™t too far behind with 4.2 issues on average.
Java Mission Control is a Java performance monitoring tool by Oracle which has been shipped with the JDK since Java version 7 update 40. Flight recorder, with ita€™s historical view, provides the ability to see trends in your JVM. Given Java Mission Control is packaged and shipped with the Oracle JDK, ita€™s surprising only 17.1% of respondents use it.
If you wanted to write custom tools to test your application, you need to be able to trust their results. JProfiler is a comprehensive profiler for Java SE and Java EE applications with plugins for all major IDEs which provides enhanced analysis of the collected profile data. From our survey we can see JProfiler is in use by 1 in 4 of our respondents and is the second most heavily used profiler. JVisualVM is an All-in-One Java Troubleshooting tool that takes advantage of several command line tools that are bundled with your JDK distribution and presents the information about your Java process performance in a nice UI. One of the most under-appreciated features is the ability to monitor MXBeans, management components that can show you thread pools usage, memory pools statistics, details about the frequency of garbage collection and so on. While VisualVM did significantly turn out to be the most popular profiler among our respondents, by usage, the tool struggled more on the number of performance bugs it found. Because XRebel was only a year old when it exceeded 3% in our survey, oh and because it was the second highest profiler for finding the most bugs, oh and because we created it, wea€™ll be giving XRebel and honourable mention! XRebel by ZeroTurnaround is a lightweight Java profiler that is intended for use in a development environment setting. XRebel gathers and nicely presents the time spent serving every request, broken down into relevant method calls.
Additionally, XRebel has a tight integration with database drivers and common HTTP querying solutions, and can gather and display the database activity originated in the application and requests to third-party web-services. XRebel finds excessive database access, easily uncovers the N+1 queries problems while still in development. People who performance test their application using multiple profilers tend to find more performance issues than just using one. Custom tools fared very well when respondents reported how many performance bugs they found using them.
JProfiler, XRebel and NetBeans profiler find the most performance bugs among our respondents. This is a part-time role, with the likely hood of something full time later down the track.
Please send through your applications to [email protected], and we’ll setup a time to meet and discuss further information on the position including remuneration which includes an hourly rate, discounted memberships and discounted products.
Some companies leading the charge are Apple, Path, Pinterest, Square, and Airbnb.A What those companies have in common is that design is at the core of their businesses. All of these schools are comparable in terms of academics, quality of staff, and amazing campuses. Of our 633 respondents to the survey, 87.8% said they studied or participated in a college-level design program. We ranked the schools by a simple metric: What percentage of respondents ranked the schools somewhat valuable, valuable, or extremely valuable? Business Insider's rating is based on a simple and pragmatic survey that asked how valuable each design school's program really is. About:A Georgia Tech has a great blend of engineering, manufacturing, business, and design in its curriculum. About: The School of Art and Design offers a wide variety of programs, ranging from studio arts to photography and graphic design. About:A The Copenhagen Institute focuses solely on interaction design, which combines traditional design with socio-technological trends. About:A The Tisch school is widely regarded as one of the nation's best institutions for studying performing and media arts. About: "Cooper Union trains its students to establish his or her own design ideals [by] offering them the training and discipline in thinking in order to achieve those ideals," one of our respondents said. About:A Cranbook provides a very unique experience to its students because they don't actually have faculty. About:A Many notable designers have graduated from Savannah, including Facebook's director of design, Kate Aronowitz, and graphic novel creators Joshua and Jonathan Luna, also known as the Luna Brothers. About:A "Rochester Institute of Technology's College of Imaging Arts and Sciences produces some of the most prepared, career-oriented designers in the workforce," one respondent said. About:A "At Art Center College of Design, I was instilled with a work ethic and appreciation and understanding of the history of design that I consider to be invaluable, which is lucky considering the cost of tuition," one of our respondents said. About:A The Human Computer Interaction Institute was listed as one of the top 10 most innovative schools in IT by Computerworld in 2008. About:A The D School counts practicing designers like Klout's director of product design, David Baggeroer, as professors. When it comes to buying a microphone, you want to be sure that whatever you purchase does justice to your voice and brings your talent to the fore.
In today's VOX Daily, you'll learn about some factors you'll want to consider when going about determining if a microphone is suited to your voice. These are questions that frequently pop up from people who are entering the voice over field.
While we can't give a definitive answer to anyone who asks "What microphone should I get?" what we can do is provide people with tools to help them decide for themselves. Some microphones like the RE20 (the stereotypical radio microphone) are large diaphragm microphones designed to pick up lower frequencies such as a deep male voice, a bass drum or even a bass guitar.
The small diaphragm or small capsule microphone is designed to pick up higher frequencies such as the female voice, the brightness of an acoustic guitar or shimmering cymbals.
Decide which type of directional pattern, also known as a microphone's polar pattern, best suits your needs. This type of polar pattern will minimize room tone and ambient noise as it's designed to pick up sounds within close proximity of the front of the microphone. If you're curious about pop filters or want to learn more about whether or not you should use them (some people prefer not to), take a look at this article discussing the benefits of using a pop filter. A shock mount is a mechanical fastener that holds your microphone in place, suspending them by elastics.
Experiment with a friend's microphone or borrow a handful of microphones from the music store and test them out.
The best microphone for your voice won't necessarily be the most expensive one on the market. Having said that, the microphone, along with the preamp are the pieces of technology that are between you and your computer so get the microphone that makes your voice sounds best but also fits in your budget. Some time ago I posted an article asking voice talent to comment with their favourite microphones and why they loved them.
There are many reviews online where people describe their experiences with various microphones.
If you have any tips or a story to tell, be sure to add a comment on this posting for all to see and benefit from. This is right on for me this morning, as I'm in the market for researching a new mic for voice over work.
With more budget, my 'nice to have' will be the vintage ribbon 4038, now made by Coles, because I truly fell for its warm, realistic sound while working at the BBC. I tested a few different mics including a go to unit for many voice talent, the Neumann TLM103. It's tough to find a shop that will have the kind of selection you'll want to try, so what the heck. Since my voice is deeper than the typical female one, I couldn't go by the suggested mic's for women.
This set up is NOT conducive to commercial VO, where countless pieces of copy usually start their direction off with phrases like "non-anncr" or "real person". Next, size of the diaphragm doesn't have the linear relationship to frequency response that you are insinuating. Speaking of voices, the human voice will represent a very broad spectrum of sound, not just a few hertz.


If the human voice didn't occupy a spread of frequencies, we'd all sound like robots (think auto-tune).
Again, I'm happy you've written this article from a common sense "try before you buy" perspective, but some of the ways facts are represented here is borderline inaccurate, or at the least implies an understanding from the reader which they probably wont have if they're green enough to ask "what's the best mic for me".. The statement was in reference to a USB microphone, in which case it would be the only step between your mouth and the recording software. Given you consult people in this area as something you do professionally, would you be open to joining us on a webinar that helps people learn about microphones and how to test them? This is always the number one question I receive whenever I do a seminar, and it is a challenging one to tackle, indeed. The room acoustics FAR outweigh mic choice when it comes to what gets heard in the recording. I went with the RE20 because that's what I used for years and I really liked how my voice sounded with it.
I found a really good combo using the RE20 with an Apogee ONE interface, but recently added the Harlan Hogan VO:1-A to my studio. Only this morning (UK time!) I thought: when I win 3000 dollars, shall I trade my Rode for a Neumann? As to a first choice of mike, this was difficult as I worked at the BBC with top-end condensers and that delicious 4038 ribbon, not to mention wonderful monitors, but the Rode never gives me cause for concern. The mic(s) I've always used are the ones where I put on the cans, speak a few words, and immediately recognize my own voice. Do you remember when you first heard yourself on a microphone or in a recording and immediately asked, "I don't sound like that, do I?" Well, I believe that if you can speak into a microphone and you hear something that you like, you're familiar with, and you recognize as your own voice, that's the mic you should use because your listener will also be able to hear what you're hearing in your own voice. Whether it's an expensive mic that you may need to mortgage your house to afford, or one that you can pick up four for $50 at Musician's Friend, you should be able to speak and get that "ah ha!" reaction from.
Apply the back and then the front of one of them alternately to your best ear as you speak in the mike.
Final point: Users of ribbon mikes, or figure of eight condensers have an easy way to check or change polarity: simply skip round the back and compare! Recently, I was diagnosed with vocal chord palsy on the right hand side and as a result, my voice is very weak and without any real power.
Where your advice is very good for budding pop stars etc., I have searched the Internet and unable to find any help for someone like me.
Question, lets say I want a deep pitch microphone to mask my voice, so I can do videos but still remain anonymous.
I would recommend calling around to a few of your local recording studios or music shops to get an idea of where and how much it would cost locally and then compare this with prices on an online marketplace that sells recording gear, such as eBay.
Vox Daily offers a daily dose of voice acting news, articles, tutorials, interviews, intelligent conversation and business ideas for voice talent and voice actors.
With this region’s extraordinary natural features and beaches, a move to Caloundra seems to be the best decision ever made, for it is not only suited for families to raise their children here but, this place is also a good start to establish a new career path, since countless job opportunities can be seen especially in the tourism industry. It was based off a performance survey which collected responses from over 1500 developers, testers, architects, and many more interestingly named job titles. This might be because those who write the custom tools work with very particular applications and have the specific application knowledge to expose certain bugs that other tools may not.
From a personal point of view, it was really exciting to see XRebel, a relatively new profiler on the block finding some of the most bugs out of any tool.
As a mature and a versatile profiler, YourKit can do both CPU and memory profiling for you, with integrations across major Java application servers, JDBC and other frameworks for high-level performance analysis like finding synchronization issues and excessive database accesses. A memory snapshot comparison and automatic memory snapshot generation when memory is low can help further analyze your applicationa€™s heap.
This gives you the data needed to find memory leaks, latency issues around thread waits, locking issues and more.
In order to trust your toola€™s results, you have to be smart enough to write the tool, taking account of all performance intricacies which existing profilers have spent years phasing out. As with any profiler, the CPU profiling is perhaps the most important and useful thing you can get from JProfiler. It also does particularly well when we look at how many bugs each profiler finds in a release.
Besides being a lightweight monitoring tool, it offers application developers the ability to properly profile their code execution, collect and browse thread dumps and heap dumps, while gathering various statistics about the internals of the JVM. A Typical memory problems like analyzing a heap dump to see what objects take the most of your JVM process memory. In fact it was turned out to be the tool which respondents said found fewest bugs in their environment. Ita€™s a javaagent that instruments Java web-applications and automatically injects a widget like reporting console, embedded in your application view. This application trace contains relative information about both self-time and total time of the methods together with an intelligent way of presenting the information that makes obvious which methods affect the performance the most.
Database access and HTTP calls are the most common reasons for poor performance and XRebel shines at presenting the developer with accessible data about them. It understands which objects clog the memory in the HTTP session as they happen during development testing.
If you did and want more information, be sure to check out the full report on one of the button links above. Someone that has a developing passion for Health & Fitness and has a willingness to learn from 2 of the best people in the industry.
It is more suited to students in search for a part time job, however we are open to all applications. The vast majority of respondents (76.6%) said skills and knowledge were the most valuable asset their respective design programs offered.
It's also the alma mater of several prominent designers including Michael Arad, who designed the World Trade Center Memorial in New York City and "Trading Spaces" designer Vern Yip. All departments put an emphasis on a humanist world view and aim to implement human-oriented environments. This style of design is less about visual aesthetics, and more about the beauty in intangible experiences.
Some notable faculty members include interaction animation expert Jean-Marc Gauthier and Chrysler Design Award winner Daniel Rozin. The school touts notable alumni like screen writer Alan Rickman and graphic designer Angus Hyland. If you're looking at a high end microphone, you might consider renting a few mics for a couple hundred dollars overnight to test a few pieces of equipment before investing a couple of thousand dollars on the right microphone for your voice.
Up to that point I had been using the RE27 (same as the RE20 but with a few extra patterns). Funny enough, I couldn't get any kind of presence from that one, but female friends I know swear by it.
When you exhaust their collection, call up a radio station and ask if you can come try their mics? I also prefer educating my clients over just belching out a canned response to the "what mic should I buy" question, but this article here is mis-representing a LOT of potentially valuable information, which could lead many to come to erroneous conclusions about their mic selection. The RE20 will force a new voice talent to create the technical version of the sound many producers are now saying they DON'T want. If this were the case then shotguns and pencil mics would always be squeaky bright mics, and large diaphragm condensers would always be muddy. Your estimates here only represent the absolute lowest end of the human spectrum per gender. Because it's really expensive to properly treat a room to stand up to a detailed mic in omni. It's a tough cookie because it's a dynamic mic, which means it's hard to get enough gain unless you run it through a pre.
I think it's a very subjective and personal decision and I agree that you must try out several before you settle on one. You can attenuate the lower frequencies to eliminate "boominess" and as a previous commentor said that he wanted to use his mic for music as well, then you'll be hard pressed to find much better.
I am looking for a very simple wireless microphone which will help me to communicate without adding any further strain on my voice.
I plan on covering all sorts of controversial topics, however, I also wanna keep my private life, private, and separate. It gives every family the chance to try out many forms of outdoor activites such as fishing,  bush walking and for those seeking a more adventurous discovery, then this region in Australia has room for every explorer’s distinct taste like the mountain climbing. First of the list to do, find a reliable removal company to help you with all your packing and unpacking concerns. Ask for a consultation appointment with your chosen removalist firm to discuss all your issues related to your moving requirements.
In the event you have also availed their unpacking packages to your final destination, make a checklist of the particular areas or rooms in your new home that you want them to unpack your belongings. A reputable removalist company must provide you added services in areas like finding the ideal place to live, a perfect school for families with children and other necessities which can be truly helpful on your part.
Lastly, take a time-out on your busy schedule to relax and spend quality time with your families and friends that you will be leaving behind.


The great news is we gave $0.50 for every completed survey to a great charity called Dogs for Good (formerly Dogs for the Disabled), which provide assistance dogs to disabled children.
When it comes to profilers, there are many on the market, and ita€™s often tough to determine what the differences are and which is best for your application.
We might also be able to infer that if a team were able to write their own in house performance tools, they are likely to be closer to the nirvana that is a performance expert.
This may well be because it is designed to be used in development, a place where ita€™s easier to find and eliminate bugs. The job however may vary, for instance, you might be trying to find and fix a specific types of IO issues or code bottleneck. Oh wea€™ll also give an honourable mention to XRebel, the lightweight development time profiler taking over 3% of the votes, which wasna€™t even a year old at the time the survey was released! YourKit can run in both sampling and tracing profiling modes and the mixed approach helps it make the most from both worlds: the precision of tracing the actual code execution, while being able to precisely control the profiling overhead. With the unique on-demand profiling, you can run the profiled application with approximately zero overhead, activating actual profiling only when it is needed.
Java Mission Control works by interacting with a JMX agent in a JVM which has an MBean server that integrates with the built in VM and app instrumentation running the in the JVM. The most unique feature Java Mission Control brings to the table is that ita€™s shipped with the Oracle JDK. Even today when I ask how many people even know about it less than half of a room at a conference room will put their hands up. Often this is more scenario based testing that writing an actual tool, but 1 in 5 people use their own tooling, which finds more bugs than other profilers.
A Additionally, JProfiler can show a call graph view, where the methods are represented by colored rectangles that provide instant visual feedback about where the slow code resides in the method call chains, making bottlenecks easier to find.
In fact it finishes second, only to custom in-house tooling, so is the highest placing third-party profiler in that category.
While other profilers might offer a more advanced approach to application profiling, VisualVM is the most appropriate first tier tool to analyze the performance of your code. However as you might expect to use it in addition to other profilers, this may not be as big of an issue as it sounds.
Also, it allows developers to instantly see all exceptions happening in the application, even if they are not propagated to the UI properly, aka, the hidden exception! We have a lot to teach about training, nutrition, life skills and even business, and we want to teach this to someone that wants to learn. The quirky blend of technical and art-oriented students help to mold the innovative thinkers. Plain and simple." I guarantee you won't get the same quality sound out of an RE20 as you will out of a U87. You will almost always have an interface, ie: Mbox, Apogee, etc, and maybe a mic pre-amp, and of course some engineers & purists will say that cable quality, think Mogami, also matters. However, this term NEEDS to be completed, as "large diaphragm" is USUALLY followed by "condenser" in the general recording vernacular. Not to say you can't achieve natural results from this set up (though it will require A LOT more leg work), but dynamics are LOW out-put microphones, so expect to have noisier recordings if you can't afford a really nice pre.
The larger cartridge in a dynamic might be designed for better bass response, but often that means the mic has a more severe bass ROLL OFF to maintain accuracy.
By writing it that way you're actually saying "cycles per second per second" which would be a different (nonsensical) mathmatical equation. A shotgun will reject more sound from the sides and corners of a room than a mic set in omni. The MKH416 has become extremely popular in this regard as it was originally used so the talent could be in the control room with the director, producer, and writers (not a very clean environment).
For example, running this mic through an MBox 2 with the input turned up enough to get a decent level on the VU's always sounded like poo to my ears. They either get too close and end up overmodulating or they are too far away and wonder why their audio is so soft. I also record music and have a second 414 which is mounted with the other on a bar to form a crossed figure of eight. I am extremely frustrated that people can't hear what I'm saying and have been advised by a speech therapist to conserve my voice as much as possible.
Ask the referrals of friends, relatives and colleagues who have relocated elsewhere where they entrusted all their moving needs. Make sure that the team manager handling your concerns would be able to give you a clear explanation and outline of their moving packages, their prices as well as the other additional services which you can avail to make your move to Caloundra as effortless as it can be. Be sure to inform them on the actual day of moving what are the items that need to be packed and what personal belongings should be left behind.
For sure you want to create long-lasting memories with your loved ones who won’t have time to visit you often in your new place.
This time ita€™s because the question allowed for multiple choice answers, in case people tended to use more than one profiling tool on their applications. Wea€™ll look through them in reverse order of usage for increased tension and suspense, even though you already know which is top! When the profilera€™s capabilities are needed you can always turn the YourKit profiler on and you can precisely control the overhead that youa€™re able to tolerate. Thata€™s a key piece as it really does lower the usage cost of the tool as ita€™s using pre-existing hooks. Therea€™s nothing that you need to install or attach to your existing VM to get it working.
The tool fared reasonably well in the survey, finding an average of 5 performance issues per release. Memory profiling with JProfiler can also be tuned to get more or less detail, for more data or to help reducing the performance overhead. Given that it’s bundled with your JDK distribution and is literally just one click away, it’s an invaluable tool! The main benefit comes from the fact that the developer can fix nastiest performance issues without even committing the poor code into the build. When not traveling, Simon enjoys spending quality time with his family, cooking and eating great food. Collect samples of yourself reading the same copy on all of them, then determine which one you like the best. If you have a portable setup, bring it and record with it, because every different place you record will have a different preamp and different room sound, so the more variables you can avoid, the better. This can ALSO hurt voice recordings as it can suck out the low end presence of a voice if you don't know how to tailor your EQ settings (referring back to the simplicity argument).
Even singing a specific note, with perfect pitch, will vibrate air at different fequencies surrounding that pitch. However, the more focused a mic gets, the more you have to deal with the proximity effect (VERY basically, the closer you get to a directional mic, the more bass frequencies are un-naturally emphasized, plus the more directional a mic is the more this effect comes into play per distance), which will make your recordings sound less natural.
How about the soft-spoken person that normalizes an audio file recorded in an acoustical space that is lacking? The last recording the I did with these mics, plus some fill mics was a performance of Rachmaninov's 3rd Piano Concerto.
It turns out that it was very common for teams to use multiple tools as each tool tends to be better in certain phases or the application lifecycle, or perhaps preferable when chasing down a particular type of performance bug. You might want to use JMC in production, but XRebel in development as each tool is better suited to different environments. No wonder almost one in two developers is using it to either fully profile the application or in conjunction with other profilers to get a good initial impression using VisualVM and perhaps digging deeper with something heavier.
Dynamic mics like the RE20, SM7b, and MD421 are valued for their high spl and high off axis rejection MORE than anything else. Large cartridge dynamics are FAR more valuable in recording screamers and kick drums because of their resistance to overloading. It's actually designed to be used on a boom pole, and sounds pretty awful if used in too small of a space. For conversational voice over it requires the use of a high (clean) gain preamp and potentially a compressor and EQ. In fact I often prefer the sound of a "small diaphragm" hand held dynamic (like the SM58) over a large cartridge dynamic as they are designed specifically for singers, not general purpose mics used on kick drums. Look at how they're used, the person is lipping the mic, and doing their full voice dj thing, which is then run into a high gain pre, then EQ, THEN limited to within an inch of its life.
This is done so the voice will be super "loud" and "cut through" all the other noises in a person's car.



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