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Tech Optimizer
July 18, 2025
pg_stat_statements is a PostgreSQL extension for monitoring query statistics, tracking execution counts, execution times, and row returns. It uses a hash table to store metrics for each query, identified by a key generated from four parameters: queryid, User OID, Database OID, and a toplevel flag. The extension can become a performance hindrance in high contention environments due to locking operations on the hash table. When numerous unique queries are executed, contention for the hash table can lead to significant performance drops. For example, with pg_stat_statements enabled, a system with 48 CPUs showed a TPS drop from 237,437 to 32,112 when executing unique queries. In contrast, with a high volume of similar queries on a 192 CPU machine, enabling pg_stat_statements resulted in a TPS of 484,338 compared to 1,015,425 with it disabled. Query sampling is introduced as a method to mitigate performance issues by recording metrics for only a fraction of executed queries. The pg_stat_statements.sample_rate parameter allows configuration of the proportion of queries tracked. However, sampling can lead to incomplete data and potential security risks if sensitive information is recorded in non-normalized form. Benchmark tests with varying sample_rate values showed that as the sample_rate decreased, TPS increased, and SpinDelay diminished. At a sample_rate of 1.0, TPS was lowest, while at 0.25 and below, SpinDelay effectively disappeared, indicating that sampling can significantly enhance performance under high contention conditions.
AppWizard
July 8, 2025
The latest Android apps for July 2025 include: 1. Cosmos: An app for discovering and curating aesthetic ideas with personalized feeds and collaborative boards. 2. Copy SMS Code: A lightweight app that copies authentication codes to the clipboard, operating offline and focusing on privacy. 3. Super Alarm: An alarm app that engages users with tasks like puzzles and physical activities to enhance their waking experience. 4. Creative App: A community-driven platform for customizing devices with wallpapers, ringtones, and layouts, allowing user contributions. 5. Gator: A storage management app that clears cache, removes duplicates, and organizes backups with automated cleaning schedules. 6. Timewise: An app that provides insights into app usage and screen time, allowing users to set limits and create phone-free zones. 7. Parquet: An AI-driven mind mapping tool that helps users brainstorm and organize ideas, generating structured mind maps for easy sharing.
AppWizard
July 1, 2025
Valve has released an update to the Steam Client that includes a performance monitoring overlay for enhanced gaming experience. This overlay provides comprehensive analysis of game performance, displaying FPS values and differentiating between frames generated by technologies like Deep Learning Super Sampling (DLSS) and FidelityFX Super Resolution (FSR). Players can select from four monitoring levels: Single FPS Value, FPS Details, CPU & GPU Utilization, and FPS, CPU, GPU, and RAM. The overlay shows minimum and maximum frame values, graphical representation of frame rates, and insights into CPU, GPU, and memory usage. It appears at the bottom of the screen and can be customized in real-time for color saturation, text size, and background opacity. Users can visualize CPU utilization per core and track FPS trends. To activate the overlay, users navigate to Settings > In Game and adjust the Performance Overlay section, where they can reposition it and assign a hotkey. Valve plans to enhance the overlay with additional data to identify hardware performance issues and provide a broader summary of game performance.
AppWizard
June 19, 2025
YouTube's CEO, Neal Mohan, announced at the Cannes Lions Festival that the platform will integrate the advanced Veo 3 model into its Shorts feature. This integration aims to enhance creative capabilities for users and is expected to revolutionize video generation by allowing creators to generate videos using natural language. Veo 3 will enable the creation of immersive backgrounds and complex visualizations, initially limited to six-second clips. The audio features of Veo 3 were highlighted during Google's I/O 2025 event and can be accessed through a Google AI Ultra subscription.
BetaBeacon
June 3, 2025
- Various Android apps and games are currently free for a limited time - PhotoApp allows users to modify pictures by integrating their face into other photos - Simple App Locker offers the option to secure desired applications with a PIN code or fingerprint - Touch Lock allows users to temporarily deactivate the touchscreen - PowerAudio is a music player with a 4.4-star rating - Smart Navigation Bar - navbar provides an alternative navigation bar for free - Defense Zone 3 Ultra HD is a tower defense game with great graphics - Cooking Quest challenges players to run a street food cart - Sudoku Master Premium offers a nice implementation of Sudoku - Crossword Quest Premium is for crossword puzzle fans - WindWings is a spin-off of the Atari classic Galaxian with a great rating
Winsage
June 2, 2025
Mary Meeker has released a comprehensive 340-page AI report highlighting rapid advancements and widespread adoption of artificial intelligence. Venture capitalists are heavily investing in AI across various sectors, including healthcare and coffee shops. Elon Musk recently left Washington, D.C. with a black eye from a playful encounter with his son, reflecting his unpredictable standing. The DOGE project has left behind issues such as water damage and pests. Microsoft has updated Notepad to include text formatting features like bold, italics, hyperlinks, and Markdown support, currently available for Windows 11 Canary and Dev Channel testers.
AppWizard
May 29, 2025
Habits can influence productivity and well-being, and habit trackers help visualize progress and foster accountability. 1. Loop Habit Tracker is a free, open-source app with a user-friendly interface, habit scores, detailed charts, flexible scheduling, reminders, and offline operation. It is ad-free and available on the Google Play Store. 2. Daylio is a journaling app that integrates habit and mood tracking, allowing users to monitor fitness activities and daily routines. It is free and available on the Google Play Store. 3. Fabulous Daily Routine Planner features an engaging interface with audio and animations, promoting healthy habits and routines. It offers a seven-day free trial, with an annual subscription priced at .99, and is available on the Google Play Store. 4. Clockify is primarily a time tracker that also provides habit tracking capabilities, allowing users to generate reports and integrate with Google Calendar. It is free and available on the Google Play Store, with a desktop version. 5. Habitify allows users to input habits, plan routines, set reminders, and visualize progress. It emphasizes consistency and offers a free version with limitations and an in-app subscription priced at .99 per month for unlimited features. It is available on the Google Play Store.
Tech Optimizer
May 19, 2025
Performance issues in PostgreSQL can arise as databases grow, leading to declines in query performance. To identify problematic queries, one can log long-running queries by setting the `log_min_duration_statement` parameter in the `postgresql.conf` file. The `pg_stat_statements` module can be enabled to monitor execution statistics of SQL statements, providing insights into query performance, including execution time and the number of calls. Queries with high standard deviation in execution time may indicate inconsistency, while sorting query statistics by total execution time can reveal excessive load from multiple fast queries. Real-time monitoring can be done using the `pg_stat_activity` view to check active queries and their states, and the `pg_locks` view can help identify blocked processes. The `EXPLAIN` command can analyze query execution plans, and using the `auto_explain` module can log plans for slow queries. Understanding cost parameters in query plans helps in optimizing performance, and different join methods (Nested Loop, Merge Join, Hash Join) have varying complexities and costs. To influence the planner's choice of scanning methods, configuration parameters can be adjusted, such as disabling sequential scanning. Extensions like `sr_plan`, `pg_hint_plan`, and `AQO` can further optimize query execution. Monitoring query progress can be done using dynamic views like `pg_stat_progress_*` for various commands.
Winsage
May 6, 2025
AI has evolved into a transformative force for organizations, increasing the demand for secure and high-performance AI-ready Windows 11 PCs. Microsoft has introduced Copilot+ PCs, including the new 12-inch Surface Pro and 13-inch Surface Laptop, both powered by the Snapdragon X Plus processor with an integrated neural processing unit (NPU) capable of 45 trillion operations per second. The 13-inch Surface Laptop offers up to 23 hours of video playback and 16 hours of web browsing, with performance enhancements of up to 50% faster speeds and double the battery life compared to its predecessor. It features an AI-enhanced 1080p front camera for video conferencing and a durable design. The 12-inch Surface Pro is the thinnest and lightest Copilot+ PC, providing 50% faster performance and up to 16 hours of local video playback. Both devices are designed as Secured-core PCs with advanced security features, including Windows Hello for Business and biometric authentication options. They support enhanced productivity through AI features in Windows 11 and Microsoft 365 Copilot, enabling faster file searches and improved team efficiency. Microsoft emphasizes sustainability with the use of recycled materials and energy-efficient designs. The new devices will be available starting July 22 in select markets.
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