Search icon CANCEL
Subscription
0
Cart icon
Your Cart (0 item)
Close icon
You have no products in your basket yet
Save more on your purchases! discount-offer-chevron-icon
Savings automatically calculated. No voucher code required.
Arrow left icon
Explore Products
Best Sellers
New Releases
Books
Videos
Audiobooks
Learning Hub
Newsletter Hub
Free Learning
Arrow right icon
timer SALE ENDS IN
0 Days
:
00 Hours
:
00 Minutes
:
00 Seconds
vSphere High Performance Cookbook
vSphere High Performance Cookbook

vSphere High Performance Cookbook: A cookbook is the ideal way to learn a tool as complex as vSphere. Through experiencing the real-world recipes in this tutorial you'll gain deep insight into vSphere's unique attributes and reach a high level of proficiency.

eBook
€32.99 €36.99
Paperback
€45.99
Subscription
Free Trial
Renews at €18.99p/m

What do you get with Print?

Product feature icon Instant access to your digital copy whilst your Print order is Shipped
Product feature icon Paperback book shipped to your preferred address
Product feature icon Redeem a companion digital copy on all Print orders
Product feature icon Access this title in our online reader with advanced features
Product feature icon DRM FREE - Read whenever, wherever and however you want
OR
Modal Close icon
Payment Processing...
tick Completed

Shipping Address

Billing Address

Shipping Methods
Table of content icon View table of contents Preview book icon Preview Book

vSphere High Performance Cookbook

Chapter 1. CPU Performance Design

In this chapter, we will cover the tasks related with CPU performance design. You will learn the following aspects of CPU performance design:

  • Critical performance consideration – VMM scheduler

  • CPU scheduler – processor topology/cache aware

  • Ready time – warning sign

  • Hyperthreaded core sharing

  • Spotting CPU overcommitment

  • Fighting guest CPU saturation in SMP VMs

  • Controlling CPU resources using resource settings

  • What is most important to monitor in CPU performance

  • CPU performance best practices

Introduction


Ideally, a performance problem should be defined within the context of an ongoing performance management process. Performance management refers to the process of establishing performance requirements for applications, in the form of a service-level agreement (SLA), and then tracking and analyzing the achieved performance to ensure that those requirements are met. A complete performance management methodology includes collecting and maintaining baseline performance data for applications, systems, and subsystems, for example, storage and network.

In the context of performance management, a performance problem exists when an application fails to meet its predetermined SLA. Depending on the specific SLA, the failure might be in the form of excessively long response times or throughput below some defined threshold.

ESX/ESXi and virtual machine performance tuning is complicated because virtual machines share underlying physical resources, and in particular the CPU.

Finally, configuration issues or inadvertent user errors might lead to poor performance. For example, a user might use a symmetric multiprocessing (SMP) virtual machine when a single processor virtual machine would work well. You might also see a situation where a user sets shares but then forgets about resetting them, resulting in poor performance because of the changing characteristics of other virtual machines in the system.

If you overcommit any of these resources, you might see performance bottlenecks. For example, if too many virtual machines are CPU intensive, you might see slow performance because all of the virtual machines need to share the underlying physical CPU.

Critical performance consideration – VMM scheduler


The virtual machine monitor (VMM) is a thin layer that provides a virtual x86 hardware environment to the guest operating system on a virtual machine. This hardware includes a virtual CPU, virtual I/O devices, and timers. The VMM leverages key technologies in the VMkernel, such as scheduling, memory management, and the network and storage stacks.

Each VMM is devoted to one virtual machine. To run multiple virtual machines, the VMkernel starts multiple VMM instances, also known as worlds. Each VMM instance partitions and shares the CPU, memory, and I/O devices to successfully virtualize the system. The VMM can be implemented by using hardware virtualization, software virtualization (binary translation), or paravirtualization (which is deprecated) techniques.

Paravirtualization refers to the communication between the guest operating system and the hypervisor to improve performance and efficiency. The value proposition of paravirtualization is in the lower virtualization overhead, but the performance advantage of paravirtualization over hardware or software virtualization can vary greatly depending on the workload. Because paravirtualization cannot support unmodified operating systems (for example, Windows 2000/XP), its compatibility and portability is poor.

Paravirtualization can also introduce significant support and maintainability issues in production environments because it requires deep modifications to the operating system kernel and for this reason it was most widely deployed on Linux-based operating systems.

Getting ready

To step through this recipe, you need a running ESXi Server, a Virtual Machine, vCenter Server, and a working installation of the vSphere Client. No other prerequisites are required.

How to do it...

Let's get started:

  1. Open up VMware vSphere Client.

  2. Log in to the vCenter Server.

  3. In the virtual machine inventory, right-click on the virtual machine, and then click on Edit Settings. The Virtual Machine Properties dialog box appears.

  4. Click on the Options tab.

  5. Change the CPU/MMU Virtualization option under Advanced to one of the following options:

    • Automatic

    • Use software for instruction set and MMU virtualization

    • Use Intel VT-X/AMD-V for instruction set virtualization and software for MMU virtualization

    • Use Intel VT-X/AMD-V for instruction set virtualization and Intel EPT/AMD RVI for MMU virtualization

  6. Click on OK to save your changes.

  7. For the change to take effect, perform one of these actions:

    • Reset the virtual machine

    • Suspend and then resume the virtual machine

    • vMotion the virtual machine

How it works...

The VMM determines a set of possible monitor modes to use, and then picks one to use as the default monitor mode, unless something other than Automatic has been specified. The decision is based on:

  • The physical CPU's features and guest operating system type

  • Configuration file settings

There are three valid combinations for the monitor mode, as follows:

  • BT: Binary translation and shadow page tables

  • HV: AMD-V or Intel VT-x and shadow page tables

  • HWMMU: AMD-V with RVI, or Intel VT-x with EPT (RVI is inseparable from AMD-V, and EPT is inseparable from Intel VT-x)

BT, HV, and HWMMU are abbreviations used by ESXi to identify each combination.

When a virtual machine is powering on, the VMM inspects the physical CPU's features and the guest operating system type to determine the set of possible execution modes. The VMM first finds the set of modes allowed. Then it restricts the allowed modes by configuration file settings. Finally, among the remaining candidates, it chooses the preferred mode, which is the default monitor mode. This default mode is then used if you have left Automatic selected.

For the majority of workloads, the default monitor mode chosen by the VMM works best. The default monitor mode for each guest operating system on each CPU has been carefully selected after a performance evaluation of available choices. However, some applications have special characteristics that can result in better performance when using a non-default monitor mode. These should be treated as exceptions, not the rule.

The chosen settings are honored by the VMM only if the settings are supported on the intended hardware. For example, if you select Use software instruction set and MMU virtualization for a 64-bit guest operating system running on a 64-bit Intel processor, the VMM will choose Intel VT-x for CPU virtualization instead of BT. This is because BT is not supported by the 64-bit guest operating system on this processor.

There's more...

The virtual CPU consists of the virtual instruction set and the virtual memory management unit (MMU). An instruction set is a list of instructions that a CPU executes. The MMU is the hardware that maintains the mapping between the virtual addresses and the physical addresses in the memory.

The combination of techniques used to virtualize the instruction set and memory determines the monitor execution mode (also called the monitor mode). The VMM identifies the VMware ESXi hardware platform and its available CPU features, and then chooses a monitor mode for a particular guest operating system on that hardware platform. The VMM might choose a monitor mode that uses hardware virtualization techniques, software virtualization techniques, or a combination of hardware and software techniques.

We always had a challenge in hardware virtualization. x86 operating systems are designed to run directly on the bare metal hardware, so they assume that they have full control on the computer hardware. The x86 architecture offers four levels of privilege to operating systems and applications to manage access to the computer hardware: ring 0, ring 1, ring 2, and ring 3. User-level applications typically run in ring 3, the operating system needs to have direct access to the memory and hardware, and must execute its privileged instructions in ring 0.

Binary translation allows the VMM to run in ring 0 for isolation and performance, while moving the guest operating system to ring 1. Ring 1 is a higher privilege level than ring 3 and a lower privilege level than ring 0.

VMware can virtualize any x86 operating systems by using a combination of binary translation and direct execution techniques. With binary translation, the VMM dynamically translates all guest operating system instructions and caches the results for future use. The translator in the VMM does not perform a mapping from one architecture to another; that would be emulation not translation. Instead, it translates from the full unrestricted x86 instruction set issued by the guest operating system to a subset that is safe to execute inside the VMM. In particular, the binary translator replaces privileged instructions with sequences of instructions that perform the privileged operations in the virtual machine rather than on the physical machine. This translation enforces encapsulation of the virtual machine while preserving the x86 semantics as seen from the perspective of the virtual machine.

Meanwhile, user-level code is directly executed on the processor for high-performance virtualization. Each VMM provides each virtual machine with all of the services of the physical system, including a virtual BIOS, virtual devices, and virtualized memory management.

In addition to software virtualization, there is support for hardware virtualization. This allows some of the work of running virtual CPU instructions to be offloaded onto the physical hardware. Intel has the Intel Virtualization Technology (Intel VT-x) feature. AMD has the AMD Virtualization (AMD-V) feature. Intel VT-x and AMD-V are similar in aim but different in detail. Both designs aim to simplify virtualization techniques.

Left arrow icon Right arrow icon

Key benefits

  • Troubleshoot real-world vSphere performance issues and identify their root causes
  • Design and configure CPU, memory, networking, and storage for better and more reliable performance
  • Comprehensive coverage of performance issues and solutions including vCenter Server design and virtual machine and application tuning

Description

VMware vSphere is the key virtualization technology in today's market. vSphere is a complex tool and incorrect design and deployment can create performance-related problems. vSphere High Performance Cookbook is focused on solving those problems as well as providing best practices and performance-enhancing techniques. vSphere High Performance Cookbook offers a comprehensive understanding of the different components of vSphere and the interaction of these components with the physical layer which includes the CPU, memory, network, and storage. If you want to improve or troubleshoot vSphere performance then this book is for you! vSphere High Performance Cookbook will teach you how to tune and grow a VMware vSphere 5 infrastructure. This book focuses on tuning, optimizing, and scaling the infrastructure using the vSphere Client graphical user interface. This book will enable the reader with the knowledge, skills, and abilities to build and run a high-performing VMware vSphere virtual infrastructure. You will learn how to configure and manage ESXi CPU, memory, networking, and storage for sophisticated, enterprise-scale environments. You will also learn how to manage changes to the vSphere environment and optimize the performance of all vSphere components. This book also focuses on high value and often overlooked performance-related topics such as NUMA Aware CPU Scheduler, VMM Scheduler, Core Sharing, the Virtual Memory Reclamation technique, Checksum offloading, VM DirectPath I/O, queuing on storage array, command queuing, vCenter Server design, and virtual machine and application tuning. By the end of this book you will be able to identify, diagnose, and troubleshoot operational faults and critical performance issues in vSphere.

Who is this book for?

The book is primarily written for technical professionals with system administration skills and some VMware experience who wish to learn about advanced optimization and the configuration features and functions for vSphere 5.1.

What you will learn

  • Understand VMM Scheduler, Cache aware CPU Scheduler, NUMA Aware CPU Scheduler, and so on during CPU Performance Design
  • Learn about the virtual memory reclamation technique, monitoring host ballooning, and swapping activity
  • Get to grips with different vSwitch load balancing, considerations for checksum offloading, VMDirectPath I/O, and so on
  • Understand DRS algorithms, resource pool guidelines, SIOC threshold consideration, SDRS and its affinity/anti-affinity rules in DRS, SDRS, and resource control design
  • Scale up and scale out cluster design for performance, FT and its caveats, application monitoring, DPM, host affinity/anti-affinity rules
  • Design your vSphere storage based on various workloads and FC storage for best performance
  • Choose the right platform while designing your vCenter Server, redundant vCenter design, vCenter SSO and its deployment
Estimated delivery fee Deliver to Malta

Premium delivery 7 - 10 business days

€32.95
(Includes tracking information)

Product Details

Country selected
Publication date, Length, Edition, Language, ISBN-13
Publication date : Jul 26, 2013
Length: 240 pages
Edition : 1st
Language : English
ISBN-13 : 9781782170006
Vendor :
VMware
Category :
Languages :
Tools :

What do you get with Print?

Product feature icon Instant access to your digital copy whilst your Print order is Shipped
Product feature icon Paperback book shipped to your preferred address
Product feature icon Redeem a companion digital copy on all Print orders
Product feature icon Access this title in our online reader with advanced features
Product feature icon DRM FREE - Read whenever, wherever and however you want
OR
Modal Close icon
Payment Processing...
tick Completed

Shipping Address

Billing Address

Shipping Methods
Estimated delivery fee Deliver to Malta

Premium delivery 7 - 10 business days

€32.95
(Includes tracking information)

Product Details

Publication date : Jul 26, 2013
Length: 240 pages
Edition : 1st
Language : English
ISBN-13 : 9781782170006
Vendor :
VMware
Category :
Languages :
Tools :

Packt Subscriptions

See our plans and pricing
Modal Close icon
€18.99 billed monthly
Feature tick icon Unlimited access to Packt's library of 7,000+ practical books and videos
Feature tick icon Constantly refreshed with 50+ new titles a month
Feature tick icon Exclusive Early access to books as they're written
Feature tick icon Solve problems while you work with advanced search and reference features
Feature tick icon Offline reading on the mobile app
Feature tick icon Simple pricing, no contract
€189.99 billed annually
Feature tick icon Unlimited access to Packt's library of 7,000+ practical books and videos
Feature tick icon Constantly refreshed with 50+ new titles a month
Feature tick icon Exclusive Early access to books as they're written
Feature tick icon Solve problems while you work with advanced search and reference features
Feature tick icon Offline reading on the mobile app
Feature tick icon Choose a DRM-free eBook or Video every month to keep
Feature tick icon PLUS own as many other DRM-free eBooks or Videos as you like for just €5 each
Feature tick icon Exclusive print discounts
€264.99 billed in 18 months
Feature tick icon Unlimited access to Packt's library of 7,000+ practical books and videos
Feature tick icon Constantly refreshed with 50+ new titles a month
Feature tick icon Exclusive Early access to books as they're written
Feature tick icon Solve problems while you work with advanced search and reference features
Feature tick icon Offline reading on the mobile app
Feature tick icon Choose a DRM-free eBook or Video every month to keep
Feature tick icon PLUS own as many other DRM-free eBooks or Videos as you like for just €5 each
Feature tick icon Exclusive print discounts

Frequently bought together


Stars icon
Total 120.97
vSphere High Performance Cookbook
€45.99
Troubleshooting vSphere Storage
€32.99
VMware vSphere 5.1 Cookbook
€41.99
Total 120.97 Stars icon

Table of Contents

8 Chapters
CPU Performance Design Chevron down icon Chevron up icon
Memory Performance Design Chevron down icon Chevron up icon
Networking Performance Design Chevron down icon Chevron up icon
DRS, SDRS, and Resource Control Design Chevron down icon Chevron up icon
vSphere Cluster Design Chevron down icon Chevron up icon
Storage Performance Design Chevron down icon Chevron up icon
Designing vCenter and vCenter Database for Best Performance Chevron down icon Chevron up icon
Virtual Machine and Application Performance Design Chevron down icon Chevron up icon

Customer reviews

Top Reviews
Rating distribution
Full star icon Full star icon Full star icon Full star icon Half star icon 4.7
(7 Ratings)
5 star 71.4%
4 star 28.6%
3 star 0%
2 star 0%
1 star 0%
Filter icon Filter
Top Reviews

Filter reviews by




J. Walker Dec 23, 2013
Full star icon Full star icon Full star icon Full star icon Full star icon 5
I am working on a environment that is under extremely high stress in terms of CPU, network, memory, and IO performance. We moved it from all physical machines to VMs recently. Initially, the VMs could not handle the stress. The suggestions in this book, especially for IO, CPU, and Memory improved the performance enough to allow the VMs to handle the stress adequately.
Amazon Verified review Amazon
Lee Marzke Oct 31, 2013
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Packt provided me a copy of this new book to review on my blog site [...] In summary the book provides a lot of good information I've not seen elsewhere on setting up Performance graphs and improving memory and network performance. To read the entire review see: [...]
Amazon Verified review Amazon
SLJ Johnson Oct 24, 2014
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Personally I really enjoy cookbooks as they're condensed specific books which focus on the stuff you're after. Less platitudinal vendor nonsense and just the facts on how to make stuff a bit better than OOTB.
Amazon Verified review Amazon
Larry Karnis Aug 22, 2013
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Had a quick look through the book and am impressed. The scope and depth of detail in the book is great. Gets right to the point, explains the issue and tells you what to do to make things better/faster/etc. Explains trade offs (when choices available) as well as things to watch out for. Lots of actionable suggestions.You could probably find most/all of the same information by finding/reading VMware blogs. This book saves a lot of time (and filters out a lot of blog 'noise') so it is worth the money.FYI - this is not a book for beginners. You should be a solid VMware administrator (VCP or equivalent skills/experience).
Amazon Verified review Amazon
VirtuallyMikeB Oct 28, 2013
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Good day,Packt Publishing was gracious enough to give me a free e-copy of the book to review. I reviewed it on my blog at VirtuallyMikeBrown dot com. I've included the full text of my review below.-------------------------------------------I was graciously given the opportunity to read and review vSphere High Performance Cookbook, written by Prasenjit Sarkar (@stretchcloud) and published by Packt Publishing, whose subtitle states it has Over 60 recipes to help you improve vSphere performance and solve problems before they arise. Gulping down its chapters was easy after seeing that Prasenjit's recipes included fixes for such common, and some not so common, misconfigurations or lack thereof.The book states its audience includes technical professionals with vSphere administration experience that want to use advanced options and configurations to optimize their environments. The vSphere platform used in the book is 5.1. As I was reading, I kept wanting to give the book to the VMware admins I've come across to help them improve their deployments because I know how much they could use the recipes inside. In my varied VMware experiences, I've come across many of the topics presented in the book. I know first-hand how useful they can be and how often they go unnoticed or are left unconfigured.The chapter list includes the following topics:CPU Performance DesignMemory Performance DesignNetworking Performance DesignDRS, SDRS, and Resource Control DesignvSphere Cluster DesignStorage Performance DesignDesigning vCenter and vCenter Database for Best PerformanceVirtual Machine and Application Performance DesignThese topics are foundational in building out a vSphere environment for the best performance. I'm reminded of a live-blog post by Scott Lowe (@scott_lowe) during VMworld 2010 timeframe, if I remember right, where then-VMware CEO Paul Maritz stated there were about 800,000 VMware Administrators and about 60,000 of them were VCPs. I know these numbers have changed since then, but what this says to me is that the large majority of IT folks with their hands in a vSphere infrastructure have not taken the formal VCP training which happens to cover a lot of the topics in this book. In my experience, most VMware administrators are not virtualization folks; they're traditional Microsoft server folks that have been forced to work in a virtualized environment because that's how the technology train has rolled. They're not dumb, of course, but they sure could use some pointers in how to better manage and optimize a vSphere infrastructure. This book focuses on optimization and does a fine job.Common topics such as understanding %RDY, memory reclamation, swapping, vSwitch load balancing, multi-NIC vMotion, resource pool guidelines, affinity/anti-affinity rules, scale up vs. scale out, considerations for iSCSI and FC storage, which platforms to choose for a vCenter Server, SSO, and NUMA considerations are just a few of those covered in this cookbook. There are also more advanced topics covered I wasn't even aware of, such as modifying CPU scheduler options for processor topology and cache awareness.As we study and gain experience with vSphere, we hear about these topics in different capacities, but this book brings the topics together to focus on how to improve performance. Each topic includes an introduction to the concept followed by a section on what you need in a test lab to follow the recipe in the cookbook style. Through screenshots, graphs and tables, you're then shown how to perform the task. And finally, how the concept works is explained, perhaps with additional material to round out the topic.In addition, attention grabbing performance-enhancing topics includeSpotting CPU over commitmentWhat is most important to monitor in CPU performanceKey memory performance metrics to monitorIdentifying when memory is the problemMemory performance best practicesImproving network performance using network I/O controlUsing resource pool guidelinesDesigning a highly available and high-performance iSCSI SANDesigning a highly available and high-performance FC SANIf you're like me, you know a VMware admin or two that could benefit from reading this book. Thanks again to Packt Publishing for the opportunity to review this book. A free, digital copy was provided to me for doing so.
Amazon Verified review Amazon
Get free access to Packt library with over 7500+ books and video courses for 7 days!
Start Free Trial

FAQs

What is the digital copy I get with my Print order? Chevron down icon Chevron up icon

When you buy any Print edition of our Books, you can redeem (for free) the eBook edition of the Print Book you’ve purchased. This gives you instant access to your book when you make an order via PDF, EPUB or our online Reader experience.

What is the delivery time and cost of print book? Chevron down icon Chevron up icon

Shipping Details

USA:

'

Economy: Delivery to most addresses in the US within 10-15 business days

Premium: Trackable Delivery to most addresses in the US within 3-8 business days

UK:

Economy: Delivery to most addresses in the U.K. within 7-9 business days.
Shipments are not trackable

Premium: Trackable delivery to most addresses in the U.K. within 3-4 business days!
Add one extra business day for deliveries to Northern Ireland and Scottish Highlands and islands

EU:

Premium: Trackable delivery to most EU destinations within 4-9 business days.

Australia:

Economy: Can deliver to P. O. Boxes and private residences.
Trackable service with delivery to addresses in Australia only.
Delivery time ranges from 7-9 business days for VIC and 8-10 business days for Interstate metro
Delivery time is up to 15 business days for remote areas of WA, NT & QLD.

Premium: Delivery to addresses in Australia only
Trackable delivery to most P. O. Boxes and private residences in Australia within 4-5 days based on the distance to a destination following dispatch.

India:

Premium: Delivery to most Indian addresses within 5-6 business days

Rest of the World:

Premium: Countries in the American continent: Trackable delivery to most countries within 4-7 business days

Asia:

Premium: Delivery to most Asian addresses within 5-9 business days

Disclaimer:
All orders received before 5 PM U.K time would start printing from the next business day. So the estimated delivery times start from the next day as well. Orders received after 5 PM U.K time (in our internal systems) on a business day or anytime on the weekend will begin printing the second to next business day. For example, an order placed at 11 AM today will begin printing tomorrow, whereas an order placed at 9 PM tonight will begin printing the day after tomorrow.


Unfortunately, due to several restrictions, we are unable to ship to the following countries:

  1. Afghanistan
  2. American Samoa
  3. Belarus
  4. Brunei Darussalam
  5. Central African Republic
  6. The Democratic Republic of Congo
  7. Eritrea
  8. Guinea-bissau
  9. Iran
  10. Lebanon
  11. Libiya Arab Jamahriya
  12. Somalia
  13. Sudan
  14. Russian Federation
  15. Syrian Arab Republic
  16. Ukraine
  17. Venezuela
What is custom duty/charge? Chevron down icon Chevron up icon

Customs duty are charges levied on goods when they cross international borders. It is a tax that is imposed on imported goods. These duties are charged by special authorities and bodies created by local governments and are meant to protect local industries, economies, and businesses.

Do I have to pay customs charges for the print book order? Chevron down icon Chevron up icon

The orders shipped to the countries that are listed under EU27 will not bear custom charges. They are paid by Packt as part of the order.

List of EU27 countries: www.gov.uk/eu-eea:

A custom duty or localized taxes may be applicable on the shipment and would be charged by the recipient country outside of the EU27 which should be paid by the customer and these duties are not included in the shipping charges been charged on the order.

How do I know my custom duty charges? Chevron down icon Chevron up icon

The amount of duty payable varies greatly depending on the imported goods, the country of origin and several other factors like the total invoice amount or dimensions like weight, and other such criteria applicable in your country.

For example:

  • If you live in Mexico, and the declared value of your ordered items is over $ 50, for you to receive a package, you will have to pay additional import tax of 19% which will be $ 9.50 to the courier service.
  • Whereas if you live in Turkey, and the declared value of your ordered items is over € 22, for you to receive a package, you will have to pay additional import tax of 18% which will be € 3.96 to the courier service.
How can I cancel my order? Chevron down icon Chevron up icon

Cancellation Policy for Published Printed Books:

You can cancel any order within 1 hour of placing the order. Simply contact customercare@packt.com with your order details or payment transaction id. If your order has already started the shipment process, we will do our best to stop it. However, if it is already on the way to you then when you receive it, you can contact us at customercare@packt.com using the returns and refund process.

Please understand that Packt Publishing cannot provide refunds or cancel any order except for the cases described in our Return Policy (i.e. Packt Publishing agrees to replace your printed book because it arrives damaged or material defect in book), Packt Publishing will not accept returns.

What is your returns and refunds policy? Chevron down icon Chevron up icon

Return Policy:

We want you to be happy with your purchase from Packtpub.com. We will not hassle you with returning print books to us. If the print book you receive from us is incorrect, damaged, doesn't work or is unacceptably late, please contact Customer Relations Team on customercare@packt.com with the order number and issue details as explained below:

  1. If you ordered (eBook, Video or Print Book) incorrectly or accidentally, please contact Customer Relations Team on customercare@packt.com within one hour of placing the order and we will replace/refund you the item cost.
  2. Sadly, if your eBook or Video file is faulty or a fault occurs during the eBook or Video being made available to you, i.e. during download then you should contact Customer Relations Team within 14 days of purchase on customercare@packt.com who will be able to resolve this issue for you.
  3. You will have a choice of replacement or refund of the problem items.(damaged, defective or incorrect)
  4. Once Customer Care Team confirms that you will be refunded, you should receive the refund within 10 to 12 working days.
  5. If you are only requesting a refund of one book from a multiple order, then we will refund you the appropriate single item.
  6. Where the items were shipped under a free shipping offer, there will be no shipping costs to refund.

On the off chance your printed book arrives damaged, with book material defect, contact our Customer Relation Team on customercare@packt.com within 14 days of receipt of the book with appropriate evidence of damage and we will work with you to secure a replacement copy, if necessary. Please note that each printed book you order from us is individually made by Packt's professional book-printing partner which is on a print-on-demand basis.

What tax is charged? Chevron down icon Chevron up icon

Currently, no tax is charged on the purchase of any print book (subject to change based on the laws and regulations). A localized VAT fee is charged only to our European and UK customers on eBooks, Video and subscriptions that they buy. GST is charged to Indian customers for eBooks and video purchases.

What payment methods can I use? Chevron down icon Chevron up icon

You can pay with the following card types:

  1. Visa Debit
  2. Visa Credit
  3. MasterCard
  4. PayPal
What is the delivery time and cost of print books? Chevron down icon Chevron up icon

Shipping Details

USA:

'

Economy: Delivery to most addresses in the US within 10-15 business days

Premium: Trackable Delivery to most addresses in the US within 3-8 business days

UK:

Economy: Delivery to most addresses in the U.K. within 7-9 business days.
Shipments are not trackable

Premium: Trackable delivery to most addresses in the U.K. within 3-4 business days!
Add one extra business day for deliveries to Northern Ireland and Scottish Highlands and islands

EU:

Premium: Trackable delivery to most EU destinations within 4-9 business days.

Australia:

Economy: Can deliver to P. O. Boxes and private residences.
Trackable service with delivery to addresses in Australia only.
Delivery time ranges from 7-9 business days for VIC and 8-10 business days for Interstate metro
Delivery time is up to 15 business days for remote areas of WA, NT & QLD.

Premium: Delivery to addresses in Australia only
Trackable delivery to most P. O. Boxes and private residences in Australia within 4-5 days based on the distance to a destination following dispatch.

India:

Premium: Delivery to most Indian addresses within 5-6 business days

Rest of the World:

Premium: Countries in the American continent: Trackable delivery to most countries within 4-7 business days

Asia:

Premium: Delivery to most Asian addresses within 5-9 business days

Disclaimer:
All orders received before 5 PM U.K time would start printing from the next business day. So the estimated delivery times start from the next day as well. Orders received after 5 PM U.K time (in our internal systems) on a business day or anytime on the weekend will begin printing the second to next business day. For example, an order placed at 11 AM today will begin printing tomorrow, whereas an order placed at 9 PM tonight will begin printing the day after tomorrow.


Unfortunately, due to several restrictions, we are unable to ship to the following countries:

  1. Afghanistan
  2. American Samoa
  3. Belarus
  4. Brunei Darussalam
  5. Central African Republic
  6. The Democratic Republic of Congo
  7. Eritrea
  8. Guinea-bissau
  9. Iran
  10. Lebanon
  11. Libiya Arab Jamahriya
  12. Somalia
  13. Sudan
  14. Russian Federation
  15. Syrian Arab Republic
  16. Ukraine
  17. Venezuela