Windows Vista Performance and Tuning - Final.pdf - Informatyka - temperator

Overview Series: Windows Vista® Performance and Tuning

Improve Performance Quickly and Easily

The Windows Vista® operating system and the recent Service

Pack 1 (SP1) provide major advancements in usability,

reliability, connectivity, and security. These improvements

are helping businesses and consumers become more

productive than ever.

improvements on a single computer, this guide also takes a

look at some of the tools used in enterprise environments to

help make performance tuning manageable on a much larger

scale.

While performance is often thought of simply in terms of

speed, it is better to think of performance as a combination

of speed and responsiveness. For example, one approach to

optimizing performance when copying large numbers of files

would be to copy those files as fast as physically possible.

Unfortunately, this approach would leave the system

unresponsive during the operation.

Optimizing Hardware Specifications to Your

Organizational Needs

Although the minimum requirements for the Windows Vista

operating system are highlighted in the Windows Vista

TechCenter, you should validate hardware performance with

your intended applications and user expectations before

determining your organization’s standard hardware

specifications.

Windows Vista and SP1 focus on delivering greater

performance and overall system responsiveness. By striking a

balance between speed and responsiveness, Windows Vista

and SP1 deliver a level of performance that has the greatest

positive impact on the system’s usability

For example, when deploying Windows Vista many

organizations have found that the following configuration

yields good results, especially for higher knowledge worker

scenarios:

Improving the performance of a computer follows the

principle of diminishing returns. There are a few actions you

can take with any computer that should improve

performance dramatically. Additional actions provide smaller

performance improvements.

 At least 2 GB of RAM.

 At least a 2 GHz processor.

 A compatible graphics adapter that provides improved

performance.

This guide looks at the following areas of performance

improvement:

If you are deploying Windows Vista with the Windows® Basic

theme settings, you can reduce these recommendations

considerably. Customize the hardware specifications and

operating system configurations based on the user roles and

operational needs in your organization.

 Making configuration changes that help a computer

feel more responsive when you use it.

 Using hardware to boost the actual physical speed of a

computer.

 Making configuration changes that help a computer to

start faster.

 Making the computer more reliable may help increase

performance.

 Monitoring performance occasionally so that you can

stop problems before they get too big.

For more information about customizing the hardware

specifications and operating system configuration, see:

 Windows Vista Enterprise Hardware Planning Guidance

http://technet.microsoft.com/en-

us/windowsvista/aa905075.aspx

Make Your Computer Feel More Responsive

While the bulk of this guide focuses on performance

Another way to improve perceived performance on a

computer is to make it feel faster. Or more accurately, you

can remove things that make the computer feel slower. You

do this by making sure that various configuration settings are

optimized.

Check Power Settings on Mobile Computers

When a computer is operating on a battery, you must strike a

balance between battery life and performance. Better

performance almost always drains battery life more quickly.

Windows Vista provides three built-in power plans, as shown

in Table 1. You can modify the settings for the three built-in

plans to suit your needs, or even create your own power

plans. You can change a built-in plan's settings or create your

own plan by using the Power Options settings in Control

Panel.

Figure 1. Select the most appropriate plan

To create a power plan:

1. If you want to create your own power plan, with the

Power Options window open, click Create a Power

Plan (refer to Figure 1).

2. Select the built-in power plan that most closely

matches what you want to create.

3. Type a name for the plan, and then click Next , as

shown in Figure 2.

Power Plan

Description

Balances energy consumption and

performance by adapting the computer's

resources to a specific activity. By balancing

the power used, when more power is

needed, more becomes available; when

less is needed, less is available.

Balanced

Power Saver

Saves power by reducing system

performance. The primary objective of this

plan is to maximize battery life.

Offers the highest performance possible by

maximizing available resources for best

performance. There will be a trade off for

the high performance with battery life.

Table 1. You can choose from three power plan options

To choose a preferred plan:

1. Click Start , and then click Control Panel .

2. In the Control Panel window, click System and

Maintenance , and then click Power Options .

3. Select the desired power plan, as shown in Figure 1.

Note that depending on the manufacturer of the

computer, you may see additional power-management

options.

Figure 2. Create your new power plan

4. Configure custom settings for your plan, including

when to turn off the display, when to put the

computer to sleep, and display brightness depending

High

Performance

on whether the mobile computer is plugged in or

running on battery power (Figure 3).

5. Click Create.

with—particularly on slower computers. By default, Windows

Vista enables visual features based on the capabilities of the

computer, but you can enable or disable specific visual effects

to help strike a balance between performance and

appearance.

Windows Vista provides quick access for enabling and

disabling these effects.

To disable visual effects

Figure 3. Create your own power plan

1. Click Start , and then click Control Panel .

2. In the Control Panel window, click System and

Maintenance .

3. Click System .

4. In the Tasks pane, click Advanced System Settings .

5. Enter your administrator credentials and click

Continue if you are prompted by User Account

Control.

6. On the Advanced tab, click Settings in the

Performance section.

7. Use the Performance Options dialog box to enable or

disable visual effects, as shown in Figure 5.

Click the Battery Meter icon in the notification area to open

the menu shown in Figure 4, which lets you change to a

different power plan and also offers more visual cues about

battery life. For example, when the battery life reaches 25

percent, a yellow triangle with an exclamation point appears

over the battery icon. When the charge reaches critically low

battery levels, a red circle with a white X appears.

Figure 4. Use the Battery Meter to change power plans

quickly

Disable Visual Effects

Many of the visual effects in Windows Vista, such as the

Aero® desktop experience, are beautiful and are designed to

enhance user productivity. They add not only a certain flair to

the computing experience but also subtle visual clues about

what’s happening in Windows, which may help user

productivity.

That said, these visual effects can slow down the perceived

performance of a computer, by making windows, dialog

boxes, and menus take just a bit longer to open and work

Figure 5. Disable visual effects to enhance

performance slightly

efficient remote searches on them If you don’t expect

files on the share to be searched over, you can disable

indexing on it.).

In order to disable Aero effects, you can right click your

desktop and click Personalize. In the Personalize appearance

and sounds window, click Windows Color and Appearance

and chose a theme. Make sure the Enable transparency box is

not checked to disable Aero.

Adjust Search Settings

For users who run Windows Vista SP1, installation of

Windows Search 4.0 offers the most efficient and

comprehensive way of improving performance of search and

reducing the impact of indexing on the system. Both search

queries and data indexing are faster with Windows Search

4.0, and indexing process is better at releasing system

resources when they are required by the user or other

processes on the PC.

Another method for optimization of search functionality, also

available to users without Windows Search 4.0 installed, is to

adjust indexing settings. The index in Windows Vista stores

information about the files on a system, including but not

limited to the file name, date modified, and author, as well as

information allowing fast searches over textual content of the

indexed files for many supported file formats. Instead of

looking through the entire hard disk for a file, Windows scans

the index for the information first.

Figure 6. Add or deleted indexed folders

Please note that searching over locations not included in the

index is significantly slower than searching over indexed

locations.

Use Hardware to Boost Performance

To access the indexing options

The most effective way to increase the performance of a

computer is by improving the hardware in the computer.

1. Click Start , and then click Control Panel .

2. In the Control Panel window, click System and

Maintenance .

3. Click Indexing Options .

The three main hardware issues governing performance are

CPU, hard disk speed, and memory capacity. This guide looks

at less invasive ways to boost performance through

hardware.

Modifying options in the following ways can help improve a

computer’s performance

Speed up Your Computer with Windows ReadyBoost™

While adding more memory to a computer is a great way to

boost performance, it isn’t always easy to do To install

memory, you must be willing (or allowed) to open the

computer case or pay someone else to do it. Sometimes, it

can be difficult to tell what type of memory you need to

install or how much you can install. And depending on the

type of computer you have, even getting to the memory slots

can be tricky.

 Add or remove folders by clicking Modify (Figure 6). By

default, personal folders (e.g., My Music, My

Documents, My Pictures) are indexed.

 Rebuild a corrupt index or change the location of the

index by clicking Advanced .

 Remove rarely searched folders or shared folders from

the index, and do not include unused folders.

(Windows Search 4.0 automatically adds all shared

folders to the list of indexed locations, to enable

Windows Vista includes a feature named Windows

ReadyBoost (shown in Figure 7). ReadyBoost technology uses

non-volatile flash memory, such as that found on a USB Drive

or Secure Digital (SD) card, and a memory management

technology called Windows SuperFetch™ to provide a cache

for the memory paging file stored on the computer’s hard

disk. Since accessing flash memory is much faster than

accessing a hard drive, using Windows ReadyBoost can

significantly increase performance.

Figure 8. You configure how much space to allocate to

Windows ReadyBoost

Figure 7. ReadyBoost is simple to use

Of course, there are some limitations to ReadyBoost.

Generally speaking, the lower the physical memory of the

computer, the bigger the existing disk cache that can be

offloaded to the ReadyBoost drive, and the greater the gain

in performance. As a computer gains more physical memory,

the performance boost is less significant.

And since the swap file itself is still stored on hard disk (only a

cache for that file is stored on the USB drive), no data can be

lost if you remove the ReadyBoost drive from the computer.

Using ReadyBoost is simple. Just plug a ReadyBoost compliant

USB 2.0 drive into the computer. To determine if a USB 2.0 is

ReadyBoost compliant, right click the USB drive in Computer

and choose Properties. When you go into the Properties

dialog box, ReadyBoost will perform a performance test to

see if the device is fast enough. A drive should support

2.5MB/s for 4KB random reads and 1.75MB/s for 1MB

random writes.

Consider Windows ReadyDrive™

Windows ReadyDrive technology is another feature

introduced in Windows Vista that works in tandem with two

new types of disk drives:

 Hybrid hard disk drives, which are traditional hard

drives with an integrated cache of non-volatile flash

memory.

 Intel TurboMemory drives, where the non-volatile

flash memory is actually detached from the drive.

Windows Vista determines whether the drive is fast enough

or has enough space to use as a ReadyBoost drive. If the drive

is fast enough, Windows displays the Speed up my system

option in the AutoPlay window.

ReadyDrive technology provides three benefits:

After selecting the Speed up my system option, Windows

Vista displays the ReadyBoost tab of the disk’s Properties

dialog box, as shown in Figure 8. You can turn ReadyBoost off

for the drive or if left on, designate how much space to use

for speeding up the system.

 Performance-critical data is loaded into flash memory

so that it is accessed faster than if it were stored on

traditional hard disk.

 Startup files are loaded into flash memory, which

translates to shorter startup times for Windows Vista.

 Since the traditional hard disk needs to be accessed

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