MESSAGE
| DATE | 2015-04-09 |
| FROM | Ruben Safir
|
| SUBJECT | Subject: [NYLXS - HANGOUT] Re: Kernel thread scheduling
|
It is passover so I've read over much of this text, but I have to say
that in general, I'm way ahead of this book. Although I have limited
knowledge of Kernel technology in the specific, the C code, data
structs, and programming concepts are spoon feed in this text and its
wasting too much time with words that are more easily explained with
coding examples and UML charts. I don't need a chapter explaining how
to use ps and the basis of Unix architecture. This text is targeted to
a different audience, and FWIW, I'm not certain it does a good job of
that either. The guys who write these texts fall in love with their own
voices. I know, I've suffered this disease myself when I've written
tech articles and books.
I can't recommend this book to anyone. Anyone who doesn't understand
the basics of I/O processer blocks is not going to understand
static void update_curr(struct cfs_rq *cfs_rq)
and OTOH void update_curr(struct cfs_rq *cfs_rq) is not explained well
enough for coders unfamiliar with the kernel data structs of which BTW
struct cfs_rq is not well defined in the text.
:(
I'm looking for something more like this, but flushed out more as a textbook
http://www.ibm.com/developerworks/library/l-completely-fair-scheduler/index.html,
and some mentoring, I hope.
Ruben
On 03/22/2015 08:35 PM, nick wrote:
>
>
> On 2015-03-22 08:05 PM, Ruben Safir wrote:
>> On 03/22/2015 07:30 PM, nick wrote:
>>> I would recommend reading Chapters 3 and 4 of Linux Kernel Development by Robert Love
>>> as when I was learning the scheduler and process management
>>
>>
>> how much has the scheduler changed since then. It was completely
>> overhauled when the CFS was created
>>
>>
>>
> The 3rd edition of this book was written after CFS was in the kernel so the chapters
> are pretty up to date.
> Nick
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