FullStackPerfAnalysis@StackAnalysis

Full Stack Performance Analysis

Joined February 2020
19 Photos and videos
nitter.net/i/grok/share/btb0FAR3F…

Difference between Max latency and tail latency?

Max Latency: Definition: The absolute longest time a single request or operation takes to complete in a system, representing the worst-case scenario across all requests. Characteristics: It’s a single data point, the extreme outlier. It doesn’t reflect typical performance or distribution but highlights the worst possible delay. Use Case: Useful for understanding the absolute upper bound of system performance, but it can be skewed by rare, extreme events (e.g., hardware failure, one-off netwo…

Answer by Grok
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nist.gov/publications/toward…

Towards a consensus on a continuous Coordinated Universal Time

This paper discusses the considerations that were important in 1972, when the current leap second system was adopted, to maintain UTC, the international referen

nist.gov
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piped.video/watch?v=eQVjXpuI…

Keynote: eBPF: Unlocking Innovation in the Linux Kernel - Daniel...

Don't miss out! Join us at the next Open Source Summit in Hyderabad...

youtube.com
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github.com/Kagnite/Kernel-Ru…

GitHub - Kagnite/Kernel-Ruler

Contribute to Kagnite/Kernel-Ruler development by creating an account on GitHub.

github.com
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brendanlong.com/cpu-utilizat…

%CPU Utilization Is A Lie

I deal with a lot of servers at work, and one thing everyone wants to know about their servers is how close they are to being at max utilization. It should be easy, right? Just pull up top or another...

brendanlong.com
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Concurrent vs Parallel vs Sequential linkedin.com/pulse/concurren…

Concurrent vs Parallel vs Sequential

Introduction People get confused to explain the difference between Concurrent, Parallel, and Sequential. I often talk about them in the office and I realize to share this story and maybe it will help...

linkedin.com
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Completely Passive eBPF Linux Stack Profiling Without Any Tracepoints linkedin.com/pulse/completel…

Completely Passive eBPF Linux Stack Profiling Without Any Tracepoints

I just published a new Linux performance tool: xstack - Completely Passive eBPF Linux Stack Profiling Without Any Tracepoints xstack is a lightweight, completely passive stack profiler for Linux that...

linkedin.com
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phoronix.com/news/Linux-core…

Intel CPU Temperature Monitoring Driver For Linux Now Unmaintained After Layoffs

There is yet more apparent fallout from Intel's recent layoffs/restructurings as it impacts the Linux kernel..

phoronix.com
7
nitter.net/i/grok/share/4m38ERVdL…

Is there a Linux mcp agent?

Yes, there are Linux-compatible Model Context Protocol (MCP) agents available, as MCP is an open protocol designed to work across platforms, including Linux. Below, I address your question about whether an MCP agent exists for Linux, building on your prior questions about the programming language (Python or TypeScript/JavaScript), lines of code (25–50 LOC for minimal agents), and security protocol timing (~4–11 ms overhead). I’ll also ensure a fair comparison to your single-threaded CGI se…

Answer by Grok
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nitter.net/i/grok/share/j2Li8uPYR…

What security protocol is used in mcp? Is that time in the results?

To address your question about the security protocol used in the Model Context Protocol (MCP) and whether time is included in the results, I’ll provide a focused answer based on recent, relevant sources, incorporating your context of comparing MCP to single-threaded CGI scripts and your emphasis on a fair comparison with standardized load, hardware, and responses. I’ll also tie in your earlier questions about performance, backend activities, and issue detection/fixing, ensuring the response …

Answer by Grok
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Importance of discovering performance issues.
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nitter.net/i/grok/share/DJCClE9up…

Describe how important it is to detect a performance issue vs fixing t…

Detecting a performance issue is often more critical than fixing it because identification is the first step to resolution. Without accurate detection, you can’t address the root cause, potentially wasting resources on misdirected fixes or allowing the issue to escalate, impacting user experience, system reliability, or business outcomes. For example, in software, undetected performance bottlenecks can lead to crashes or slowdowns, costing users or revenue. Detection enables prioritization, ro…

Answer by Grok
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promlabs.com/blog/2025/07/17…

Blog - Why I recommend native Prometheus instrumentation over OpenTelemetry

PromLabs - We teach Prometheus-based monitoring and observability

promlabs.com
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nitter.net/i/grok/share/BilCNf1Eu…

Is a database of size 350 gb normal when just installed?

A 350 GB database size upon initial installation is highly unusual unless specific circumstances apply. Here’s a breakdown to assess whether this is "normal": Typical Database Size on Installation: Most newly installed databases, such as MySQL, PostgreSQL, or SQL Server, start with a very small footprint—often just a few megabytes to tens of megabytes. This includes system tables, metadata, and minimal configuration data. For example, a fresh MySQL or PostgreSQL installation typically occupi…

Answer by Grok
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voltrondata.com/blog/theseus…
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nitter.net/i/grok/share/xlzoXsuPJ…

Please describe the design and architecture of plan 9

Plan 9 from Bell Labs is a distributed operating system designed for simplicity, flexibility, and scalability, emphasizing a unified approach to resources and networking. Its architecture is distinct from traditional Unix, though it shares philosophical roots. Below is a concise yet comprehensive overview of its design and architecture, based on its core principles and implementation details. Core Design Principles Everything is a File: Plan 9 extends Unix’s “everything is a file” concept …

Answer by Grok
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nitter.net/i/grok/share/rDsQz0t11…

Can grafana draw a comparison dashboard with four different timestamps…

Yes, Grafana can create a comparison dashboard to visualize data across four different timestamps, but achieving this requires specific configurations or plugins, as Grafana’s default functionality doesn’t directly support comparing multiple distinct timestamps in a single panel without workarounds. Below, I’ll explain how you can accomplish this based on Grafana’s capabilities and best practices, addressing both single-panel and multi-panel approaches. Key Considerations Timestamps in C…

Answer by Grok
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nitter.net/i/grok/share/Lvsd6cAEh…

What is the saga distribution problem?

The Saga distribution problem typically refers to a concept in distributed systems and microservices architecture, where the term "Saga" describes a design pattern for managing long-running, distributed transactions. This pattern is used to maintain data consistency across multiple services without relying on traditional distributed transactions (like two-phase commits), which can be problematic in distributed environments due to their complexity and performance overhead. The problem arises when…

Answer by Grok
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Software Debugging
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A Look at Two Emerging 100+ Year Data Storage Technologies linkedin.com/pulse/look-two-…

A Look at Two Emerging 100+ Year Data Storage Technologies

Two innovative companies—Holomem and CeraByte—are pushing the boundaries of archival data storage with long-term, high-density solutions. While both present their technologies in LTO cartridge-style...

linkedin.com
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