Errata for The Art of Application Performance Testing
Submit your own errata for this product.
The errata list is a list of errors and their corrections that were found after the product was released. If the error was corrected in a later version or reprint the date of the correction will be displayed in the column titled "Date Corrected".
The following errata were submitted by our customers and approved as valid errors by the author or editor.
Color Key: Serious Technical Mistake Minor Technical Mistake Language or formatting error Typo Question Note Update
| Version |
Location |
Description |
Submitted By |
Date Submitted |
Date Corrected |
| Printed |
Page 1
3 paragraph |
you repeat the word "despite" twice in line 4.
Note from the Author or Editor:
Please delete one instance of "twice" |
Gilberto Munoz |
Jul 29, 2010 |
|
| PDF |
Page 12
Bold font "Note" part |
In following sentence:
"these scale from simple capture and organization to solutions with
full-blown Universal Modeling Language (UML) compliance."
Universal Modeling Language (UML)
should be modifed to
Unified Modeling Language (UML)
Note from the Author or Editor:
Please change to "Unified Modeling Language (UML)" |
Zhonghua Li |
Dec 08, 2010 |
|
| Printed |
Page 20
Paragraph headed <I>Physical versus virtual NIC</I> |
Last sentence reads: <q>I always advise minimizing the ratio of physical NICs to virtual servers.</q>
The word 'minimizing' should be replaced by the word 'maximizing'.
Note from the Author or Editor:
Please change minimizing to maximizing |
Andrew Parker |
Nov 05, 2012 |
|
| Printed |
Page 40
After "Pacing" heading |
Reads "Think Time And Think time" - assume this should read "Think Time And Pacing"
Note from the Author or Editor:
This should read as indicated
"Think time and Pacing" |
Barry Perez |
Jun 17, 2010 |
|
| Printed |
Page 40
5th paragraph under heading 'Pacing' |
You have written: <q>...if a typical "mini-statement" transaction takes 60 seconds to execute, then applying a pacing value of 2 minutes will limit the maximum number of transactions of this type per hour to 30 per virtual user. This is accomplished by making each virtual user wait 2 minutes before beginning the next iteration. In other words, the amount of time between each execution of "mini-statement" cannot be less than 2 minutes.</q>
This might appear to be pedantic of me: if the transaction takes 60 seconds to execute and the user must wait 2 minutes before beginnning the next iteration, then one such transaction will be completed only every 3 minutes, giving 20 transactions of this type per hour.
Of course, it will all depend on the Pacing support from the tool: the Pacing delay might begin once a transaction has completed, or each iteration may be separated by a fixed time interval.
Note from the Author or Editor:
Quite correct!
Please change "30 per hour" to "20 per hour" |
Andrew Parker |
Nov 14, 2012 |
|
| Printed |
Page 48
Mainframe Tier Paragraph |
The last sentence of the paragraph reads,
Note from the Author or Editor:
Hi,
Many thanks for spotting this, the line should read as follows:
"The most common are:"
|
Steve Eckhart |
Aug 10, 2009 |
|
| PDF |
Page 62
First bullet point |
You have written <q>It is all too easy to be caught without insufficient injector capacity...</q>
The word <q>insufficient</q> should be replaced with the word <q>sufficient</q>.
Note from the Author or Editor:
Many thanks for picking this up.
Please change insufficient to sufficient |
Andrew Parker |
Dec 06, 2012 |
|
| PDF |
Page 95
Figure 4-19 right axis |
If the "knee" in the graph is where the speech bubble indicates, then the right side axis should have a different set of values.
It seems rather odd that both the left and right axes have the same values. I'm thinking that the right side should have steps of 50 - which would make the 260 indication closer to the point of interest (at about 900 seconds)
|
Per Lauge Buresø Holst |
Dec 13, 2011 |
|
| PDF |
Page 135
Figure D-2 |
Figure D-2. Example server KPIs for Microsoft IIS. The figure displayed is the same figure as Figure D-3 for Citrix server farm and does not appear to be the KPI for MS IIS.
Note from the Author or Editor:
Figure D-3 incorrectly used for Figure D-2. Please amend Figure D-2 to use the correct image file. |
Russell Barnes |
Jul 12, 2011 |
|
| PDF |
Page 137
second paragraph |
the URL link as described in appendix E cannot be found
The MS Project file is available from the book’s companion web site (http://oreilly.com/
catalog/9780596520663/).
Note from the Author or Editor:
Can you please confirm where I can upload the sample project file so that it will be available to readers? |
Kostas Hairopoulos |
Apr 05, 2010 |
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