Posted in Computer Technology, Programming

5 Coding Hacks to Reduce GC Overhead

In this post we’ll look at five ways in roomates efficient coding we can use to help our garbage collector CPU spend less time allocating and freeing memory, and reduce GC overhead. Often Long GCs can lead to our code being stopped while memory is reclaimed (AKA “stop the world”). Duke_GCPost

Some background

The GC is built to handle large amounts of allocations of short-lived objects (think of something like rendering a web page, where most of the objects allocated Become obsolete once the page is served).

The GC does this using what’s called a “young generation” – a heap segment where new objects are allocated. Each object has an “age” (placed in the object’s header bits) defines how many roomates collections it has “survived” without being reclaimed. Once a certain age is reached, the object is copied into another section in the heap called a “survivor” or “old” generation.

The process, while efficient, still comes at a cost. Being Able to reduce the number of temporary allocations can really help us increase of throughput, especially in high-scale applications.

Below are five ways everyday we can write code that is more memory efficient, without having to spend a lot of time on it, or reducing code readability.

1. Avoid implicit Strings

Strings are an integral part of almost every structure of data we manage. Being much heavier than other primitive values, they have a much stronger impact on memory usage.

One of the most important things to note is that Strings are immutable. They can not be modified after allocation. Operators such as “+” for concatenation actually allocate a new String containing the contents of the strings being joined. What’s worse, is there’s an implicit StringBuilder object that is allocated to actually do the work of combining them.

For example –

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a = a + b; / / a and b are Strings
The compiler generates code comparable behind the scenes:

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StringBuilder temp = new StringBuilder (a).
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temp.append (b);
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a = temp.toString () / / a new string is allocated here.
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/ / The previous “a” is now garbage.
But it gets worse.

Let’s look at this example –

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String result = foo () + arg;
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result + = boo ();
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System.out.println (“result =” + result);
In this example we have 3 StringBuilders allocated in the background – one for each plus operation, and two additional Strings – one to hold the result of the second assignment and another to hold the string passed into the print method. That’s 5 additional objects in what would otherwise Appear to be a pretty trivial statement.

Think about what happens in real-world scenarios such as generating code a web page, working with XML or reading text from a file. Within a nested loop structures, you could be looking at Hundreds or Thousands of objects that are implicitly allocated. While the VM has Mechanisms to deal with this, it comes at a cost – one paid by your users.

The solution: One way of reducing this is being proactive with StringBuilder allocations. The example below Achieves the same result as the code above while allocating only one StringBuilder and one string to hold the final result, instead of the original five objects.

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StringBuilder value = new StringBuilder (“result =”);
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value.append (foo ()). append (arg). append (boo ());
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System.out.println (value);
By being mindful of the way Strings are implicitly allocated and StringBuilders you can materially reduce the amount of short-term allocations in high-scale code locations.

2. List Plan capacities

Dynamic collections such as ArrayLists are among the most basic dynamic structures to hold the data length. ArrayLists and other collections such as HashMaps and implemented a Treemaps are using the underlying Object [] arrays. Like Strings (Themselves wrappers over char [] arrays), arrays are also immutable. Becomes The obvious question then – how can we add / put items in their collections if the underlying array’s size is immutable? The answer is obvious as well – by allocating more arrays.

Let’s look at this example –

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List <Item> <Item> items = new ArrayList ();
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for (int i = 0; i <len; i + +)
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{
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Item item = readNextItem ();
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items.add (item);
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}
The value of len Determines the ultimate length of items once the loop finishes. This value, however, is unknown to the constructor of the ArrayList roomates allocates a new Object array with a default size. Whenever the internal capacity of the array is exceeded, it’s replaced with a new array of sufficient length, making the previous array of garbage.

If you’re executing the loop Welcome to Thunderbird times you may be forcing a new array to be allocated and a previous one to be collected multiple times. For code running in a high-scale environment, these allocations and deallocations are all deducted from your machine’s CPU cycles.
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Posted in Instrument

Reasons Why Instrumental Soothing Music Is Best For Relaxing

There are many kinds and forms of soothing music. One general way though to divide compositions designed to relax is to group them according to instrumental tunes and those with vocals. Is it always a better option to listen to purely instrumental selections when you want to relax?

In a lot of cases, what is considered relaxing is based entirely on subjective preferences. This is why some folks listen to slightly upbeat pop songs and still get a general feeling of relaxation. This may also apply to you but it’s worth noting that there are reasons why instrumental tunes are better options.

One reason why tracks without vocals are ideal is because they heighten the subjective experience. Those that do have lyrics tend to control the experience based on the themes that they pursue. In other words, listeners’ feelings, emotions and thoughts are generally dictated by whatever the vocalist says.

There may be no real problem if the lyrics of songs that have the potential to fall under the category of relaxing soothing music carry appropriately calming words. In a lot of cases though, there are songs that carry traditionally slow beats that may be calming but have lyrics that may generate the opposite effect in individuals. Instead of feeling calm, an individual may end up feeling overly melodramatic or even depressed.

There are more reasons to choose instrumental sounds for relaxation. One more good reason is the natural ability of certain instruments to evoke relaxation. The piano, flute or harp for instance, when played following a slow beat piece, automatically generates smooth, calming tunes that almost mimic what nature produces. You would probably not be able to expect the same outcome from an electric guitar even if it is played to accompany slow pop tunes.

The natural calming effects produced by the right instruments also give listeners the chance to visualize better. Listening to instrumental tunes in a cool, quiet environment can help you imagine appropriately calming situations or environments. While listening to gentle piano pieces for example, you can envision yourself lounging under a tree, sitting beside a bubbling brook or being in whatever place you find comforting. Compositions that have lyrics obviously do not give listeners the same opportunity because of how words can limit the imagination.

In modern soothing music, there is no doubt that words can play important roles. In a lot of cases though, you would always prefer to have a completely subjective experience when you want to relax. If you want your imagination to work to your advantage during your chill out moments, you had best settle for instrumental compositions.

Posted in Chef and Recipes

Should Underage Active Duty Military Be Able To Drink

There’s been quite a bit of talk among lawmakers about this notion of underage drinking for active duty military personnel. Should they be able to drink? After all, these people are young enough to serve the country and shoot guns, so why not let them drink legally? Of course, there are many who object to this idea. These young adults are just not mature enough to think logically after they’ve had a few drinks.

In the past few years lawmakers in quite a few states have been pushing for laws that allow active duty military under 21 to drink. There are even groups on social networking websites have been collecting signatures so that they can get a measure on the ballot to lower the drinking age limit.

At Camp Pendleton, a marine corp base near San Diego, marines are able to drink only when they’re on base. However, some business owners and residents have already noticed that there are more problems with drunk driving in the area surrounding the base. Although military personnel can drink on base, once they step off military property they’re subject to the 21 age limit law.

Of course, no matter what drinking laws there are, people are going to find a way to buy and drink alcohol. Where there’s a will, there’s a way, right? I’ve witnessed teenagers pay people over 21 to buy them a drink. If you live in a city like San Diego which is close to the Mexico border, you’ll see thousands of young people heading down to the bars in Mexico to drink.

The bottom line is, it’s all about the maturity level of young adults who have been given the opportunity to drink. It’s up to them to take responsibility and learn the consequences of their actions. Perhaps if there was better education for younger people about the consequences of drunk driving, they would take it more seriously.

Posted in Kitchen

Review Of Top Kitchen Faucet Brands

The faucet nowdays is chosen not just to get water into the sink but to put in a lot of style, sophistication and flair to a home’s kitchen design. With all the kinds of styles and brands available in the market nowadys, it is best to know your options to help you decide which one best suit you. The top five brands of this kitchen fixture are American Standard, Delta, Kohler, Price Pfister and Grohe.

Delta kitchen faucet is a sought after brand among consumers because of their great quality and award winning products and reputation that they have built through the years. They are at the cutting edge of product innovation as they are recognized for using intelligent technological solutions to make the customers lives easier. Their products are guaranteed to be leak free and worry free operation made possible with trademarked features such s Diamond Seal Technology, Electronic touch and Magna Tite Docking. If you have the budget to seriously make your kitchen sink look high tech and sophisticated, then this brand is the way to go. Kohler, on the other hand, have faucets that are made from solid brass and zinc die-cast only made for outstanding operation, durabililty and strength for years to come. They want their consumers lives easier that is why they utilize an innovative technology for simple installation.

Grohe kitchen faucet has European style of design and functionality with their upscale and innotive products. They want the consumers to feel the perfect flow all the time with their products, this is their motto. With the high price tag of their products, you are to have an optimum fulfillment with the splendid design and modern features that are guranteed to deliver the best peformance and quality possible.

American Standard and Price Pfister are perhaps what can be considered the the household brands when it comes to kitchen sink faucets. They have built their own trusted name and reputation being around in the industry for more than a century. They have a vast array of products from cheap to expensive to serve consumers of all ages and classes. Count on durability, high quality and reliability with the superior designs and breakthrough innovations that they have contributed to the industry throughout the years.

When deciding which brand of fixture to go for, think of three things, your budget, style and needs. If you invest in a good quality kitchen faucet, then you will be saving money in the long run. On the other hand, if you are short of money at the moment, think of basic functionality first rather than sophistication.

Posted in Entertaintment

Check Out The Many Lancaster, PA Things To Do

The Lancaster, PA area has a lot to offer people who are looking for a variety of activities. There are Lancaster PA things to do that allow you to enjoy the excitement of the active downtown area, and there are things to do in Lancaster PA that will allow you to watch the world go by. If you can catch the area at the right time, then you would swear that there is no more beautiful region in the world. When you need to find something to do that is not offered in your area, then take a trip to Lancaster, PA.

One of the Lancaster PA things to do that can be done any time of the year is take a tour of the many covered bridges in the area. The Lancaster area is proud of its rustic landscape, and that is why touring the covered bridges is one of the more prominent things to do in Lancaster PA. You can get a map and take your own tour of the bridges, or you can charter a horse and buggy to make your tour of the area even more special. In some cases, that little extra step can create a lifetime of memories.

If you want to keep the pace slowed down a little, then one of the Lancaster PA things to do is to go antiquing. The entire area is spotted with some of the most charming antique shops in the Northeastern United States. This is one of those things to do in Lancaster PA where the area can really show off its craftsmanship as well. Many of the antique shops are right next to the woodworking and candle making shops that offer some very fine handmade products. A walking tour of antique shops and handmade craft shops can be a relaxing day.

The Demuth Museum in Lancaster is a step back in time that would appeal to people who are interested in American history. In the list of Lancaster PA things to do, a stop at the Demuth Museum should make the list. It is a compound that has preserved homes from the 1700�s as well as other artifacts from the area�s past. If you are looking for things to do in Lancaster PA that will entertain as well as educate you, then a visit to the Demuth Museum is something you should look into and plan to make a day of it.Whether you are looking for specific Lancaster PA things to do or simply browsing all the different things to do in Lancaster PA, Things To Do Lancaster PA has you covered.

Posted in Food

So that when the hand was cut Round cut vegetables and fruit

Potatoes, squash, or fruit that is round will be difficult to cut. Because the fruit is not very stable when attached to a cutting board. If you slip, you can cut your hands.

To keep your fingers are not cut when cutting vegetables uneven, use the following techniques, as reviewed by FoxNews:

Step 1: Use a sharp knife, thinly sliced ​​potatoes or other vegetables to make a flat side on the bottom.

Step 2: Cut the potatoes in a downward direction on a cutting board. The way to ensure a stable and potatoes will not roll. Potato slices as desired and then stop when it became wobbly and difficult to handle.

Step 3: Change the position of the potatoes with a wide field and a flat side on the cutting board attached. This makes it easy to cut the last piece the hard cut. Continue slicing as desired.

Posted in Internet and Server

Is It Time To Change Your Business Internet Provider

Whether you recognize it or not, it may be the time to switch to a new business broadband provider. As a responsible business owner, it is up to you to keep tabs on all of the business processes that keep your business running. Sometimes, youll find that processes that were once adequate are no longer doing the job. Business internet, for example, is the type of service that you may have to take a look at every few quarters and identify if your current provider is still the clear cut choice you considered them to be when you first invested in them. Maybe it is a lack of modern technology, or maybe is it the case of a lack of performance. Whatever the case may be, an occasional observance of the effectiveness of your current business internet plan is an easy way to see if your company has any room for improvements within its technological infrastructure.

What if your current business internet provider is not delivering the required speeds they promised at the start of your contract? And in addition, how would you know? First of all, just because it feels as if your internet is working smoothly doesnt mean that you should assume that everything going on behind the scenes is A-Okay. There is a always the chance that you arent getting the maximum amount of internet speed that you are contracted for. Being complacent with lower business internet speeds than you should be getting can negatively affect your business whether you directly notice it or not. It may seem smooth at first, but the bits of time that are being wasted by that slow connection during uploads and downloads add up very quickly over a weekly basis, especially if you have dozens of internet connected devices using that slower-than-it-should-be business broadband connection. That valuable time equates to lost money, and that is also time you could have been spending getting to work on your next project.

There are countless free websites on the internet that can be used to test your business internet connection. You should use these free speed tests to determine whether or not your current business internet provider is hitting their numbers. These tests will interpret your upload and download speeds, which you can simply compare to the predetermined performance of your business broadband provider. Based on that information, determine whether or not it is time to change your business internet provider. There are a lot of quality business broadband providers out there that have the technology and proven track record to deliver on promised results. Dont waste time and money with a provider who doesnt deliver on the speeds you think you are paying for!

Posted in Indoor and Outdoor

Indoor Basketball Game Review

The term indoor basketball game was brought to population from the original outdoor forerunner. This type of sport ideally matches into a home game room, and fortunately the basket can be purchased to a mostly reasonable price. This sport is perfect for kids who want to spend some free time at from doing something useful for their body and fitness. Even for parents, this type can be a relief and fun bringing opportunity every day.

Now, lets have a closer look on the board variant: There is a highly recommended brand called “Double Shot Pro” which is very common and frequently bought by Americans and Canadians. You can get these indoor basketball game boards by the manufactures, sites such as Ebay and Amazon for a very acceptable price. However, you have to include shipping costs which can be fairly expensive, mostly because each table weights above 100 pounds. These boards offer electronic scoring, action music or sound after you shot some hoops. Young kids just love the sound and excitement of the game much more than from a typical billiard or soccer match.

It is true, that indoor basketball game is probably made only for kids, and families who want to spend more quality time with their children. Undoubtedly, this game reaches its goal in every aspect. If you get such a board, it is suggested that at least 2 people are available when you get the order delivered in front of your house or flat. The reason is because this board weighs a ton, and one person alone will have a tough time carrying it inside the house or flat. Also note that most sellers are only shipping the item within the United States or Canada. If you are from European or other countries, you might want to search in these areas and look your ears on the ground in these areas.

Another good remarkable brand which provides indoor basketball game boards and accessories is called “Sportscraft”. They also offer varies items in different niches such as foosball etc. These boards are more expensive than from some other competitors, but have one of the best customer reputation and also quality. Here you can expect to pay somewhere around $ 1,000 for one board and will get the shipping for free. The typical dimension of one board is: 84 tall, 84 deep, and 50 wide. Sportscraft will ensure that each of you and your friends spend on this table, will be entertainment pure! This review was dedicated to revealing 2 different brands on indoor basketball game.