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Crucial Redis Monitoring Metrics You Must Watch

Scalegrid

Effective management of memory stores with policies like LRU/LFU proactive monitoring of the replication process and advanced metrics such as cache hit ratio and persistence indicators are crucial for ensuring data integrity and optimizing Redis’s performance. <code> 127.0.0.1:6379> <code> 127.0.0.1:6379>

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Seeing through hardware counters: a journey to threefold performance increase

The Netflix TechBlog

We also see much higher L1 cache activity combined with 4x higher count of MACHINE_CLEARS. a usage pattern occurring when 2 cores reading from / writing to unrelated variables that happen to share the same L1 cache line. Cache line is a concept similar to memory page?—? Thread 0’s cache in this example.

Hardware 363
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Using hardware performance counters to determine how often both logical processors are active on an Intel CPU

John McCalpin

Most Intel microprocessors support “HyperThreading” (Intel’s trademark for their implementation of “simultaneous multithreading”) — which allows the hardware to support (typically) two “Logical Processors” for each physical core. leaving half of the Logical Processors idle).

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Software Testing Errors to look out for (with examples)

Testsigma

Hardware error. We focus on software so much that we forget about the hardware failures. If the hardware gets disconnected or stops working then we cannot expect correct output from the software. Example: Printers and other hardware devices return bits of information that something is not right. Hardware issues.

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Time to First Byte: What It Is and Why It Matters

CSS Wizardry

only to find that the resource they’re requesting isn’t in that PoP ’s cache. Application runtime: It’s kind of obvious really, but the time it takes to run your actual application code is going to be a large contributor to your TTFB. Routing: If you are using a CDN—and you should be!—a

Latency 269
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How to Assess MySQL Performance

HammerDB

GHz 4th Generation Intel Xeon Scalable processors (code-named Sapphire Rapids) Up to 20% higher compute performance than z1d instances Up to 50 Gbps of networking speed Up to 40 Gbps of bandwidth to the Amazon Elastic Block Store (EBS) We can also verify these capabilities by running some simple benchmarks on the different subsystems.

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A thorough introduction to bpftrace

Brendan Gregg

It was created by Alastair Robertson, a talented UK-based developer who has previously won various coding competitions. hardware Hardware counter-based instrumentation. Hence static instrumentation, where event points are hard-coded and become a stable API. tracepoint Kernel static instrumentation points. bashreadline.bt

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