Errata

Errata for Feedback Control for Computer Systems

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The errata list is a list of errors and their corrections that were found after the product was released.

The following errata were submitted by our customers and have not yet been approved or disproved by the author or editor. They solely represent the opinion of the customer.

Color Key: Serious technical mistake Minor technical mistake Language or formatting error Typo Question Note Update

Version	Location	Description	Submitted by	Date submitted
	http://techbus.safaribooksonline.com/9781449362638/ch01_html "Code to Play With" section	While the initial code segment used class name "Buffer", the simulation summary at the end of the section used class name "Queue", instead. The sample code provided for download (ch01.py) uses the class name "Buffer". Additionally, the initialization block for that class requires two parameters (max_wip and max_flow). The summary did not pass any parameters to "Queue" in the line "p = Queue()".	Kurt Graustein	Nov 07, 2013
Printed	Page 140 Figure 13-2	The left side of this figure shows the synchronous case, but is labeled "Asynchronous". The right side of this figure shows the asynchronous case, but is labeled "Synchronous". Prose in the figure caption correctly refers to "the synchronous case (left)" and "the asynchronous case (right)".	Ben Liblit	Jan 25, 2019
Printed, PDF	Page 143 Table 13-1	Given the values for the parameters K, \tau and T on page 142 as well as the Cohen-Coon tuning formulas in Table 9-1 (page 97), the values shown in Table 13-1 (page 143) are not correct. They should be: kp = 335.4, Ti = 23 and ki = 14.6	Richard van Heest	Feb 16, 2015