optimization

Part of the reason this level of aggression is possible is that the JVM is able to make potentially unsafe optimizations where necessary.

This guess seems to be confirmed by the fact that this anomaly is not present in Azul's JVM, which uses customized lock optimizations.

Your container will still be in charge of instance swapping, as well as any other optimizations you want it to perform.

All of this checking would be slow if done naively, but numerous optimizations (based on years of research) make it extremely quick.

For structure optimizations , it is often best to use a Fine numerical integration grid for both Medium and Fine quality calculations.

In several cases the optimizations did not speed things up all that much.

Another approach might be to perform some optimizations within the code itself to reduce the amount of memory that the application uses.

Such optimizations can be "undone" if the assumption about this characteristic later becomes false.

Also, this would make it very difficult to do things like the message batching optimizations discussed above.

Number of optimizations for a query that contains at least one subquery.

Select-statement The SQL statement to which the rewrite optimizations are applied to generate the function's results.

This optimization is called lock elision and is another of the JVM optimizations slated for Mustang.

Like the previous optimizations, this optimization collects related data on the disk to optimize for sequential Read optimization.

This keeps the concerns of reliable delivery out of the business process and allows for transport appropriate optimizations.

While recent advancements in optimizations for dynamic languages are promising, they lag behind the state of the art for static languages.

I anticipate further optimizations of load-time weaving performance will continue over the next year.

NFS is now a stateful protocol and includes optimizations for data and metadata separation as well as data access parallelism.

We will take a look on how the compiler implements for loops, and which optimizations it applies on them.

So far, all of the optimizations that we have looked at were language-level optimizations made by the GWT compiler.

Allows you to set compilation properties defining compiler behavior, such as compiler warnings, optimizations, and compilation constants.

Tree SSA is designed to be both language independent and target independent while supporting improved analysis and richer optimizations.

Visual C has always offered the most advanced set of optimizations of any compiler.

It includes a number of optimizations that minimize memory bandwidth and therefore make it ideal for smaller, portable devices.

Number of optimizations that produce a plan that maintains one or more indexed views.

Yahoo ! recommendations in more detail, and see what other optimizations can be made to improve performance.

Logically, both perform the same job but for different types of predicates and with different optimizations.

The MMI is a highly effective interpreter, hand crafted in assembly code of a host platform to achieve best possible optimizations.

C compiler can perform any of the optimizations discussed when it sees individual objects being operated upon directly.

These engines perform optimizations to run code faster, and clearly, these optimizations make variable access much faster than others.

The tracking table contains certain key column values when partition change optimizations have been enabled for the publication.

GCC performs nearly all supported optimizations that do not involve a space-speed tradeoff.

Martin Fowler: Undoing and reapplying optimizations is really what you ought to do.

In addition to the optimizations that this article has already covered, I keep the following items on my list.

Tests shorter than this tend to have results skewed by the impact of container startup and thread optimizations.

Unfortunately, many common optimizations are not necessarily safe when applied to floating-point computations.

For this reason, it is a good idea to measure the performance of your program before and after you apply optimizations.

The lack of strict determinism of a function can block valuable performance optimizations.

The tracking table contains certain key column values when a publication is configured to enable partition change optimizations.

To ensure the robustness of the power grid, multiple power grid simulations and optimizations need to be performed.

This default behavior is already quite rich, but I'll customize it in Part 2 with increasingly sophisticated optimizations.

Through the years, Facebook has made a ton of optimizations to Memcached and the surrounding software (like optimizing the network stack).

Many times, I had to call a halt to most of the content creation in order to get most of the coders back on optimizations.

Besides, some optimizations for implementation were also introduced to trade off the estimation precisions against run- time overheads.

The string type is a special sequence that will allow languages to leverage much of their string libraries and optimizations.

Query optimizations to address query complexity, data volumes, and timeliness expectations with improved query execution techniques.

The next few sections highlight common optimizations that can provide low-level improvements in application performance.

Joe Shaw: There is always more data to index, performance optimizations to make, etc. That's the boring future.

Maybe you need to do some optimizations of how the Master Server handles host data information from the individual game servers.

The tools provided by Sun let you quickly analyze your application, make optimizations, and see the effects of your optimizations.

Understand the security implications of the optimizations and use other methods to protect your application as appropriate.

This enables context-independent optimizations to be performed.

Marcin is continuing to work on various optimizations, but both Ola and I have been playing with the new code.

provides local and global optimizations , automatic - register allocation , and loop optimization.

Applies only when partition change optimizations have been enabled for the publication.

Furthermore, any vendor specific optimizations would be lost in this situation.

Interface takes advantages of batch optimizations for setting properties and initializing co-dependent properties.

The compiler can perform optimizations with indirect calls, such as hoisting the load of a virtual method address out of a loop.

You can run a program that instructs the JIT compiler to turn off all JIT optimizations to produce debuggable code.

Implement the minimum security optimizations required to improve application performance.

In addition to escape analysis and lock elision, Mustang has some other optimizations for locking performance as well.

A reusable plan does not use the values of host variables for selectivity estimation or rewrite optimizations.

If not, you should remove the security optimizations to help prevent inadvertent security weaknesses.

Beyond video content optimizations, video player optimizations are equally important when it comes to performance.

Optimizations that require higher-level information about the program may not be possible, because their expression is lost in RTL.

This quick-and-dirty implementation, written with no optimizations in mind, could obviously stand some refactoring.

Have recommended the network current situation and regular GSM Network maintenance and optimizations of Shanghai UNICOM.

These include everything from dataflow-based optimizations to expression optimization to loop unrolling.

The optimizations performed by today's JVM are extraordinary, allowing byte code to outperform natively-compiled code in many cases.

when you use optimizations to create a release build , the compiler will not produce symbolic debugging information.

Without whole program optimization, optimizations are performed on a per module (compiled) basis.

Many optimizations depend on reordering key programming instructions to improve performance.

Some restrictions are introduced when using try blocks that inhibit the compiler from performing certain optimizations.

Heat and Battery Life Issues, Sources of Power Dissipation, Circuit and Algorithm Optimizations for Power, Voltage Scaling.

These solutions involve configuration tuning and other subtle optimizations that require little restructuring of the SOA.

Unlike interpreter-based systems, your loaded classes benefit from all the JRE's runtime optimizations.

What is the total number of optimizations performed?

Process optimizations are performed through simulations that help in attaining the ideal business process state.

The following describe a number of video player optimizations that may help to significantly improve performance on the mobile device.

So lock coarsening can also enable other optimizations that have nothing to do with locking.

Conventional wisdom has it that choosing the best algorithm trumps any micro-optimizations.

The restrict declspec gives the compiler more information for performing compiler optimizations.

Early bound objects allow the compiler to allocate memory and perform other optimizations before an application executes.

The JIT reads in the MSIL and begins to perform optimizations that are very sensitive to changes in the MSIL.

Under fp: precise, optimizations that reorder expression evaluation may change the points at which certain errors occur.

However, compiler behavior from release to release may result in different optimizations for the code below.

When a metadata scope is saved, various format optimizations can result in token remapping.

An electromagnetism-like method (EM) is proposed for solving constrained optimizations on the basis of pattern search (PS).

Note that although this document primarily covers micro-optimizations, these will almost never make or break your software.

Nevertheless, contributors frequently come up with new optimizations.

Many optimizations with load time for Ajax involve reducing the number of requests to the server.

Furthermore, the results of four single objective optimizations and their multiobjective optimizations are compared.

Recent versions of GCC also include some tail-recursion optimizations under limited circumstances.

Click one or more of the Recommendation or Suggestion optimizations you want performed, and then click Optimize.

Check the man pages for gcc for a complete list and description of available optimizations.

The hotfix also includes some optimizations of the Application Control feature.

Track project status and propose optimizations and promotions for project development.

Also, DBCC DBREINDEX offers the advantage of more optimizations than individual DROP INDEX and CREATE INDEX statements.

Web-based applications allow a similar set of optimizations.

Two of the more useful optimizations are better inline support and the ability to exploit the instruction cache locality.

Occasionally, code will behave differently when optimizations are applied.

Occasionally, code will behave differently when optimizations are applied.

Instead it keeps on profiling looking for more opportunities to provide further optimizations.

There exist many more JIT optimizations than listed in the above procedure. JIT optimizations are hierarchical.

Classes could also attempt optimizations to minimize the processing time for a layout pass based on size changes to child elements.

These compilers have added flags that take advantage of POWER6 optimizations, mentioned previously in this article.

The merge process has special performance optimizations available if the joined column in the parent is unique.

But in this case, bulk optimizations are not possible, and you might encounter blocking when obtaining locks on individual rows or pages.

And you can change the set of optimizations applied after the fact. . .

Though DB2 does its own optimizations, code page conversions may or may not be necessary.

Some optimizations to xml_pickle have brought its behavior from O(N^2) to a manageable O(N), relative to pickled object size.

In this article, I'll continue this tour of concepts by talking about first-class functions, optimizations, and closures.

Attribute with debug information tracking and disables JIT optimizations.

Number of optimizations that are for UPDATE statements.

These compilers have added flags that take advantage of POWER5 optimizations, mentioned previously in this paper.

Many graphics optimizations including shadows and headlights. Go ahead, try Max Shadow Detail.

Here you go a new version with some improvements a lot of these have been with code clean ups and optimizations.

The simplest and best of all optimizations is to perform less work.

Pulsing transformers with the above optimizations have already been applied in the driving system of ultrasonic motors.

It also prevented some otherwise effective compiler optimizations.

Number of optimizations for which an internal memory limit was exceeded.

Indicates that no optimizations for sharing internal resources are specified.

Specifies a FORWARD_ONLY, READ_ONLY cursor with performance optimizations enabled.

Attribute but disables the tracking of debug information and enables JIT optimizations.

Enable or disable optimizations performed by the compiler to make your output file smaller, faster, and more efficient.

This tool can later take over the most boring of optimizations , these we do over and over again.

However, optimizations are possible for recovery after restoring from a backup.

BigMemory is optimized for byte buffers, and has built-in optimizations for objects serialized using standard Java serialization.

Zero disables the optimizer, and higher values use more aggressive optimizations.

An overly simplified description, but the result is a new intermediate form better suited for high- and low-level optimizations.

The optimizations are all designed to work on IR generated by static C-like languages.

All of the DB2 Connect network optimizations outlined in this section are vitally important to a healthy and scalable system.

Options control various optimizations that help you create code for maximum speed or minimum size.

Thus, some optimizations under fp: fast may not preserve the intended order of expressions.

Discusses the tools that support profile-guided optimizations.

In some cases, however, such optimizations can introduce too much performance variability.

Whole program optimization allows the compiler to perform optimizations with information on all modules in the program.

The XslCompiledTransform class also includes other optimizations that make it much faster than the XslTransform class.

Recent research has shown how to solve such constrained optimizations using distributed systems rather than central processors.

No compile-time optimizations and validations can be made.

In this paper, we have constructed a new algorithm for unconstrained optimizations .

Database read operations also benefit from many new cache optimizations.

This helps to perform process optimizations and improvements.

Optimizations are generally turned on in a release build.

The only problem is that right now very few compilers implement tail-call optimizations.

Finally puts forward some data placement optimizations.

WebSphere Application Server can apply optimizations to code that only calls tag handlers, which can help maintain the 64 KB limit.

Just precisely when the compiler will use such optimizations is both platform and context dependant.

Tells the compiler to favor optimizations for size over optimizations for speed.

Learn how a few simple optimizations can help.

The optimizations done on MSIL code are a large subset of those done on unmanaged code.

Certain optimizations occur based on the import size, and instantiating an object that has an adjusted scale value can decrease performance.

In addition, perhaps a future Psyco could decide to perform more extensive (but more costly) optimizations on heavily-run operations.

There are three main CAMD approaches: generation-and-test, mathematical optimization, and combinatorial optimizations .

Information that is gathered from profiling test runs will override optimizations that would otherwise be in effect if you specify.

In other words, beforefieldinit gives the runtime a license to perform aggressive optimizations.

The Performance Analyzer will perform the optimizations and then mark them as Fixed.

A full changelog is available, listing all of the bugfixes, features and optimizations which are in this release.

Visibility is more subtle; it deals with the vagaries of memory caching and compiler optimizations.

In Java EE 6, JAXB offers improved performance through marshalling optimizations enabled by default.

The discussion of local connection optimizations and MicroBrokers are outside the scope of this article.

The -Xquickstart option causes the JIT to run with a subset of optimizations; that is, a quick compile.

These tiny optimizations are sometimes the most interesting.

It is apparent that we really need the threading optimizations to reduce this overhead.

Average MAXRECURSION level in optimizations where a maximum recursion level is specified.

Provides an overview of the process of using profile-guided optimizations.

The optimizations of PCR and RFLP analysis conditions were studied.

These optimizations are similar to those available with the BULK INSERT command.

It scales with the database, and XML-specific optimizations give it better performance than CLOBs.

which we can walk to provide interpreter-like behavior with some optimizations around simplification of mathematical expressions . . .

Enabling memory location optimizations for NUMA multi-CPU systems (-XX: UseNUMA).

Has updated behavior with respect to optimizations.

The 4. 2 release series continued with new optimizations and enhancements that covered both languages and processor architectures.

The whole process of faring need no recursive computations or optimizations.

The problem with RTL is that the optimizations it enables are those close to the target.

Controls the optimizations that LINK performs during a build.

In the following example, two rewrite optimizations are performed on a query.

Number of optimizations where one or more indexed views are used in the output plan.

Turns off all optimizations in the program and speeds compilation.

Further optimizations & fixes to the new network code.

With these optimizations, you have gotten your checkbox to run in approximately 900ms, which is quite an improvement in performance.

and the optimizations of station public area illumination.

Has optimizations for the embedded market.

In the. NET platform, most compiler optimizations are not performed by the VB and C# compilers.

This new IR is more suited for implementation of traditional compiler optimizations.

Already the overhead is reasonable, and we have identified some helpful optimizations to integrate.

Best guess why: some lock-related optimizations (such as lock elision or lock biasing) failed to kick in (see Resources).

This is useful to get a feel how an application running on JRuby interacts with the optimizations.

A complete list of settings and optimizations will be included in the paper when it is released.

Many, but not all, of the optimizations are being back ported from the latest version to previous ones.

You want to take advantage of storage and query optimizations based on type information.

More optimizations and lots of heuristic processing goes on in any real system.

Your code gets the benefit of compiler optimizations.

Number of optimizations in which a MAXRECURSION level greater than 0 has been specified.

The new algorithm is explained in details and some simulations show the algorithm is very effective in finding global optimizations.

The process of identifying where optimizations will make a difference is the process of finding bottlenecks.

Added optimizations to player models.

Optimizations to file loading system.

Some developers have an obsession with performance issues, leading them to devote a lot of efforts to presumed optimizations.

Results from the execution phase help in such optimizations.

Our experience shows that any website optimizations, enhancements or site re-designs pay for themselves within 3-4 months.

Improvements have been made from version 3. 3 to 4. 1, including POWER6 processor-specific optimizations to its C compiler, gcc.

Improvements have been made from version 3. 2 to 3. 3, including POWER5 processor-specific optimizations to its C compiler, gcc.

Other optimizations, such as advanced or configurable Garbage Collection strategies can help performance even more.

Static typing can also provide more information that a compiler can use to make earlier optimizations, improving performance.

In this tip, we ll look at some of the most common JNDI optimizations.

Number of optimizations that entered search 1.

Based on the analysis on a surface grinder bed, we alter the structure of the grinder bed and carry out some optimizations.

Outside the critical path, optimizations are rather useless.

With Visual C 2005, the compiler can perform a large subset of the standard native code optimizations on MSIL code.

You can make plenty of other optimizations, but their impact depends on the XSLT processor you use.

Generally, because of just-in-time optimizations, properties are no more expensive than fields.

Makes a number of optimizations while determining this call stack in order to make the access check loop as fast as possible.

Martin Fowler : Another thing you have to bear in mind is that performance optimizations are quite implementation and release dependent.

GCC 3. 2 lacks architecture-specific optimizations for POWER processors.

You must perform Idea optimizations yourself.

You will need to ensure that all of the threading optimizations are enabled.

Once you apply optimizations, you should test your code again.

These are all optimizations better made by the programmer than by the compiler.

Let's look now at some Visual C optimizations on managed code.

There are no optimizations for specific nodes.

Other conditions such as value type optimizations may further increase the allowed size.

Optimizations result in code rearrangement in the output file, which can make debugging difficult.

You'll notice that the application probably gets slightly faster each time you run it; this is because of operating system optimizations.

At the very least we should know if these optimizations are being applied.

Let your compiler do the simple optimizations.

This is because some optimizations for speed increase code size.

GET is important because it enables various optimizations.

Keep as many images public (viewable to the everybody group) as possible since there are some optimizations in place for public items.

jQuery 1. 2. 4 will also include speed optimizations for event handling methods.

There are other more browser-specific optimizations that can be done by GWT.

There are two types of performance improvements described in this article: large optimizations, such as using the ASP.

There are some rewrite optimizations that are not reflected in the output of REWRITE.

Another advantage to KVM is that because it's part of the kernel itself, it can take advantage of kernel optimizations and advancements.

JIT optimizations can make an application less debuggable.

Axial ratio optimizations for two kinds of short helical antennas are carried out.

For example, the following unsafe optimizations may be employed under fp: fast.

On the one hand, there is the internal organization of A's data -- its normalization and denormalized optimizations, for example.

The Database Engine applies logging and locking optimizations when it is possible.

Because they can never be used as a base class, some run-time optimizations can make calling sealed class members slightly faster.

HTTP performance is always a place to really improve performance with some easy optimizations and common-sense approaches

Global Convergence of a New Restarting Conjugate Gradient Method for Nonlinear Optimizations

Interior affine scaling curvilinear path algorithm for nonlinear optimizations subject to linear inequality constraints

An improved response surface model and its applications in the fast and global optimizations of electromagnetic devices

A Feasible Algorithm for Inequality Constrained Optimizations by Means of Nonmonotone Line Search

If an EJB is local, a vendor can use the same type of optimizations that would have been possible for dependent objects,

Further performance optimizations (improved NIO-level file streaming support, . . . )

An interior affine scaling subspace trust region method for nonlinear optimizations subject to linear inequality constraints;

The Constrained Optimizations Problem of the Inhomogeneous Eigenvalue for Symmetric Triple Diagonal Matrices

Implementation instances of several compilation optimizations

You can use this to turn off optimizations for a single function