performance degradation Archives

Tech Optimizer

April 5, 2026

Linux 7.0 Cuts PostgreSQL Performance in Half

An AWS engineer reported a significant drop in PostgreSQL throughput on Linux 7.0, with performance reduced to approximately half of its previous capability. Benchmark tests showed that the removal of the PREEMPT_NONE scheduling option was the main cause of this regression. On a 96-vCPU Graviton4 instance, throughput measured at just 0.51x compared to earlier kernel versions. Salvatore Dipietro from Amazon/AWS conducted benchmarking analysis of PostgreSQL 17, revealing that Linux 7.0 delivered only 0.51x the throughput of its predecessors. The root cause was traced to kernel commit 7dadeaa6e851, which eliminated PREEMPT_NONE as the default option, leading to increased contention due to the new PREEMPT_LAZY model. Profiling data indicated that 55% of CPU time is consumed by spinning in PostgreSQL’s spinlock, causing significant performance degradation. When a revert patch was applied, throughput rebounded to 1.94x the baseline. The decision to restrict preemption modes in Linux 7.0 aimed to address issues within the kernel's scheduling model. Dipietro proposed a patch to restore PREEMPT_NONE, but kernel developers suggested PostgreSQL adopt the rseq time slice extension instead. Database operators running PostgreSQL on Linux face potential performance reductions with the upgrade to Linux 7.0.

Tech Optimizer

March 28, 2026

Don’t miss out: Bitdefender, One of the World’s Best Antiviruses, Is Now on Sale

Bitdefender is known for its effective early threat detection and elimination, reflected in high scores from independent lab evaluations. The current deal offers the complete all-in-one security suite at a competitive price, allowing users to upgrade from standard protection. Bitdefender operates in the background, providing real-time scanning of files, links, and downloads for safe browsing. The suite includes virus detection, web protection, ransomware defenses, a built-in VPN, a password manager, and anti-tracking capabilities. It offers proactive protection, such as scanning downloads on public Wi-Fi to prevent security risks. Bitdefender is resource-efficient, allowing users to run it without significant impact on system performance. The current sale makes it easier to justify moving from free tools to a comprehensive solution, especially given the sensitivity of information stored on devices.

Tech Optimizer

March 17, 2026

How PostgreSQL on Azure helps modernize legacy databases

Microsoft is enhancing PostgreSQL to establish it as a high-performance, scalable, and enterprise-ready open database platform, addressing the limitations of legacy systems like Oracle. Many Oracle customers face rising licensing costs, performance bottlenecks, and scalability issues, prompting them to consider migration. Apollo Hospitals successfully migrated from Oracle to Azure Database for PostgreSQL, achieving a 60% reduction in operational costs and a threefold improvement in system performance. Microsoft has introduced an AI-assisted migration tool to simplify the transition from Oracle to PostgreSQL, automating the conversion of schemas and application code. Azure Database for PostgreSQL offers high performance, scalability, and security, with features like v6-series compute SKUs and SSD v2 storage. Azure HorizonDB, a new cloud-native PostgreSQL service, supports extreme performance demands and is designed for real-time analytics. Microsoft is committed to enhancing PostgreSQL as an open-source database for enterprise workloads, enabling organizations to innovate and become more agile.

Tech Optimizer

March 16, 2026

What Is a Crypto Miner Virus?

A crypto miner virus, or cryptojacking malware, secretly uses a device’s CPU or GPU to mine cryptocurrency for an attacker, leading to increased electricity costs and potential hardware damage for the victim. It typically infects devices through phishing emails, pirated software, compromised websites, and malicious browser extensions. Monero is the preferred cryptocurrency for mining due to its efficiency on standard CPUs and privacy features. Signs of infection include overheating, high CPU usage, and increased electricity bills. Detection involves monitoring system performance and running antivirus scans. Prevention includes using antivirus software, keeping systems updated, and avoiding pirated software. Notable incidents include attacks on a European water utility and the Los Angeles Times website.

AppWizard

March 13, 2026

Why are PC developers removing Denuvo from their games?

Denuvo is a widely recognized digital rights management (DRM) solution used by major publishers like Square Enix, Sega, and EA to prevent unauthorized copying and modification of games. A study indicated that a game could lose up to 20% of revenue if cracked within its first week. Concerns about Denuvo's impact on game performance have been raised, with reports suggesting that games without it may perform better. Issues with titles like Resident Evil Village and Tekken 7 were attributed to improper implementation of additional protection measures. Tekken 7 eventually removed Denuvo, while Resident Evil Village retained it until April 2023. Amplitude Studios launched its game Humankind without Denuvo due to performance issues found during beta testing. Michał Kiciński, CEO of GOG, argued that DRM complicates the experience for legitimate customers and fails to effectively prevent piracy. Saber Interactive decided not to use Denuvo for Space Marine 2, highlighting the nuanced nature of the anti-DRM movement. Denuvo costs around ,000 per month plus fees for each game activation, making its financial justification less compelling as sales decline post-launch. Square Enix has removed Denuvo from titles like Dragon Quest 1 & 2 Remake and Final Fantasy 16 within six months of release, while Capcom has retained it for longer periods. The decision to remove or avoid Denuvo is influenced by performance issues, financial implications, and operational efficiency considerations.

Winsage

March 11, 2026

How to disable Hyper-V for Windows 11

Microsoft's Hyper-V is a hardware virtualization platform integrated into Windows 11 Professional, Enterprise, and Education editions, allowing users to host multiple virtual machines (VMs) on a single computer. It operates using a type 1 hypervisor directly on hardware, enabling VMs to share resources like CPU, memory, and storage. Hyper-V includes features such as dynamic memory allocation, software-defined networking, and saved checkpoints. IT administrators may need to disable Hyper-V due to compatibility issues with third-party virtualization software, high-precision applications, or driver conflicts. Disabling Hyper-V can also affect security features reliant on it, such as virtualization-based security (VBS) and Device Guard. Methods to disable Hyper-V include: 1. Using the Windows Features dialog. 2. Executing a PowerShell command: Disable-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V-All, HypervisorPlatform, VirtualMachinePlatform. 3. Running a DISM command:

dism /Online /Disable-Feature /FeatureName:Microsoft-Hyper-V-All /FeatureName:HypervisorPlatform /FeatureName:VirtualMachinePlatform

. 4. Using the bcdedit command: bcdedit /set hypervisorlaunchtype off. 5. Modifying Group Policy to disable VBS. 6. Editing the Windows Registry to disable VBS or Credential Guard. For multiple managed computers, administrators can create and execute a PowerShell script or use Group Policy Objects to streamline the process. Testing in a controlled environment is recommended to ensure desired outcomes without compromising security or functionality.

AppWizard

March 3, 2026

Another Nvidia GPU driver has issues, causing up to 16% drops in performance

Nvidia's driver version 595.71 has introduced performance issues, limiting core clock speeds, voltage levels, and power outputs, resulting in performance drops of up to 16%. The update, released on March 2, aimed to fix problems from the previous version 595.59 but has negatively impacted overclocked graphics cards. For example, an RTX 5090 that previously achieved clock speeds over 3,100MHz now struggles to maintain speeds above 3,000MHz. Benchmark tests showed the older driver (591.74) achieving 171fps compared to 144fps with the new driver. Users are advised to revert to an earlier driver version from the 591 series to restore performance.

Tech Optimizer

February 25, 2026

Effective ways to prevent the download of malicious code

Malware is malicious software designed to disrupt normal system operations, often infiltrating devices through activities like web browsing or opening documents. In 2023, SonicWall Capture Labs reported over 6 billion malware attacks, an 11% increase from the previous year. Common types of malware include viruses, worms, Trojans, spyware, adware, ransomware, fileless malware, and bots. Malware spreads through email attachments, phishing links, compromised websites, fake apps, and removable media. Its effects can include performance issues, data theft, and financial damage. Signs of malware presence include sluggish performance, unexpected crashes, and unauthorized changes. Recommended actions if malware is suspected include disconnecting the device, running a malware scan, and changing passwords. Preventative measures include using security software, practicing safe browsing, keeping software updated, and building security awareness.

Tech Optimizer

February 19, 2026

How OpenAI Scaled to 800 Million Users on PostgreSQL

OpenAI has scaled PostgreSQL to support over 800 million active users of ChatGPT, making it one of the largest PostgreSQL deployments globally. The database can handle millions of concurrent connections and a very high volume of requests per second. OpenAI employs several strategies to optimize performance: 1. **Connection Pooling with PgBouncer**: Reduced database connections from 10,000 to 200, enhancing efficiency by a factor of 50. 2. **Read Replicas**: Distributes read requests across multiple replicas while the primary database handles writes. 3. **Horizontal Sharding**: Partitions data across multiple instances based on a shard key, such as user_id or tenant_id. 4. **Query Optimization**: Analyzes slow queries and creates appropriate indexes to maintain performance. 5. **Connection Management**: Implements timeouts and connection limits to prevent overload. 6. **Caching**: Uses application-level caching with Redis to reduce database load. 7. **Monitoring and Observability**: Tracks key metrics like connection counts and query latency to identify issues early. These strategies enable OpenAI to maintain performance and reliability for a large user base.

Winsage

February 11, 2026

Users Solve Windows 11 Issues With Four Settings Checks

To address slowdowns and glitches in Windows 11, users should verify several settings before considering a complete reinstallation. Key actions include: 1. Check for Windows Updates: Navigate to Settings > Windows Update to install patches and update device drivers. Uninstall problematic updates if necessary. 2. Manage Startup Applications: Use Task Manager (Ctrl+Shift+Esc) or Settings > Apps > Startup to disable unnecessary auto-starting applications to improve boot speed. 3. Pause OneDrive Syncing: Temporarily pause OneDrive syncing during resource-intensive tasks to prevent performance degradation. 4. Adjust Visual Effects: Disable Transparency effects and Animation effects in Settings > Personalization > Colors and Settings > Accessibility > Visual effects, respectively, to reduce GPU strain. 5. Limit Notifications: Turn off notifications in Settings > System > Notifications to minimize interruptions. 6. Restrict Background Activity: Set background app permissions to "Never" for infrequently used applications to conserve memory and disk usage. 7. Run Security Scans: Use Windows Security to perform a Quick scan and ensure that real-time protection features are enabled to detect malware and adware. 8. Browser Maintenance: Reset browser settings, remove unknown extensions, and enable tracking protection to improve resource management. If issues persist, further steps include running System File Checker, testing memory, checking storage health, or performing a repair install of Windows.