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Windows Timer Resolution: The Great Rule Change

Randon ASCII

The behavior of the Windows scheduler changed significantly in Windows 10 2004, in a way that will break a few applications, and there appears to have been no announcement, and the documentation has not been updated. First, a bit of operating-system design context. Timer interrupts and their raison d’être.

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GotW #97 Solution: Assertions (Difficulty: 4/10)

Sutter's Mill

An assertion documents the expected state of specific program variables at the point where the assertion is written, in a testable way so that we can find program bugs — logic errors that have led to corrupted program state. Assertions are only about finding bugs, not doing program work.

C++ 58
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What Adrian Did Next?—?Part 2?—?Sun Microsystems

Adrian Cockcroft

Photo by Adrian I spent six years at Cambridge Consultants, building some interesting systems, managing our Sun workstations and learning a lot, but by then Sun had opened a sales office across the street, and I wanted to find out what they were going to release next, before everyone else.

Tuning 52
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bpftrace (DTrace 2.0) for Linux 2018

Brendan Gregg

Created by Alastair Robertson , bpftrace is an open source high-level tracing front-end that lets you analyze systems in custom ways. eBPF (extended Berkeley Packet Filter) is in the Linux kernel and is the new hotness in systems engineering. bcc is powerful but laborious to program. It's shaping up to be a DTrace version 2.0:

C++ 110
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bpftrace (DTrace 2.0) for Linux 2018

Brendan Gregg

Created by Alastair Robertson , bpftrace is an open source high-level tracing front-end that lets you analyze systems in custom ways. eBPF (extended Berkeley Packet Filter) is in the Linux kernel and is the new hotness in systems engineering. bcc is powerful but laborious to program. It's shaping up to be a DTrace version 2.0:

C++ 40
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Data Mining Problems in Retail

Highly Scalable

Most of this article represents an overview of the results published by retailers and researchers who built practical decision making and optimization systems combining abstract economic models with data mining methods. A segment that consistently responds to a certain marketing program is actionable and solid. Applications.

Retail 152
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SQL Server I/O Basics Chapter #2

SQL Server According to Bob

​​ Without limiting the rights under copyright, no part of this document may be reproduced, stored in or introduced into a retrieval system, or transmitted in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise), or for any purpose, without the express written permission of Microsoft Corporation.

Servers 40