move_pages() on Linux increadibly slow

Summary The issue at hand involves the move_pages() system call on Linux, which is used to migrate memory pages from one NUMA (Non-Uniform Memory Access) node to another. The problem is that this operation is incredibly slow, taking several minutes to move gigabytes worth of 4K pages, despite showing almost no CPU load. This suggests … Read more

How do I extend my Python cash machine program to handle multiple accounts?

Summary The provided Python code simulates a basic cash machine program with a single account, verifying the PIN and ensuring sufficient balance before processing a withdrawal. However, the code lacks the ability to handle multiple accounts, PIN changes, transaction logging, daily withdrawal limits, and comprehensive error handling. To extend this program, we need to redesign … Read more

Interactive graph visualizationin taipy

Summary The question revolves around visualizing edges, nodes, and attributes of a graph using Taipy, with a specific interest in understanding how to leverage network objects for this purpose. The user has explored the Taipy blog, particularly the section on Taipy extensions for Neo4j users, but found a lack of documentation on utilizing network objects … Read more

clang-format continuation indent of member function call arguments

Summary The clang-format tool is used to format C++ code according to a set of predefined rules. One of the features of clang-format is the ContinuationIndentWidth, which specifies the indentation width for continuation lines. However, when it comes to member function call arguments, the ContinuationIndentWidth is applied relative to the member, not the previous line. … Read more

Why does ansible-lint complain about “key-order” when more than one YAML anchor is used in the same task?

Summary The issue at hand is that ansible-lint complains about key-order when more than one YAML anchor is used in the same task. This occurs even though the code works as intended, leading to confusion about whether it’s an ansible-lint imperfection or a misuse of YAML anchors. Root Cause The root cause of this issue … Read more

Angular 21 signal forms: How to write custom schema validator functions for union types

Summary The problem revolves around creating custom schema validator functions for union types in Angular 21 signal forms. The goal is to validate a Dashboard object that contains an array of Widget objects, where Widget is a union type of WidgetA, WidgetB, and WidgetC. The challenge lies in applying the correct validation function to each … Read more

CPU consumption 2 tests aggregation

Summary The problem at hand involves aggregating CPU consumption data from two separate logs collected at different times on a Jetson device. The goal is to estimate the system’s overall load for capacity planning. Two approaches are considered: time-aligned aggregation and sum of per-service “5-minute peaks”. The correct approach must be determined to accurately estimate … Read more