2014, Availability and Cache - Technology Performance Pulse

Cache-Control for Civilians

CSS Wizardry

MARCH 3, 2019

To this end, having a solid caching strategy can make all the difference for your visitors. ?? How is your knowledge of caching and Cache-Control headers? That being said, more and more often in my work I see lots of opportunities being left on the table through unconsidered or even completely overlooked caching practices.

Cache

Cache Latency Strategy Servers

The Return of the Frame Pointers

Brendan Gregg

MARCH 16, 2024

This technique saves two instructions in the prologue and epilogue and makes one additional general-purpose register (%rbp) available." Only in extreme circumstances does the cost (in processor time and I-cache footprint) translate to a tangible benefit - circumstances which usually resort to hand-coded assembly anyway.

Java

Java Cache Google Hardware

Analyzing a High Rate of Paging

Brendan Gregg

AUGUST 29, 2021

Reads usually have apps waiting on them; writes may not (write-back caching). total used free shared buff/cache available Mem: 64414 15421 349 5 48643 48409 Swap: 0 0 0. There's not much memory left, 349 Mbytes, but more interesting is the amount in the buffer/page cache: 48,643 Mbytes (48 Gbytes). This is "cache busting."

Cache

Cache C++ AWS Latency

How To Add eBPF Observability To Your Product

Brendan Gregg

JULY 2, 2021

cachestat File system cache statistics line charts. For a more recent example, I wrote cachestat(8) while on vacation in 2014 for use on the Netflix cloud, which was a mix of Linux 3.2 BPF didn't exist on those versions, so I used basic Ftrace capabilities that were available on Linux 3.2. opensnoop Files opened table.

Latency

Latency Cache Energy Systems

Minimal Logging with INSERT…SELECT into Empty Clustered Tables

SQL Performance

MAY 16, 2019

If both sort and no-sort alternatives are available, the optimizer will make a cost-based choice. For SQL Server 2014 and later, the uniquifier is correctly omitted for unique indexes, but the one extra byte for the internal bit flag is retained. spt_values AS SV ; Plan Caching. Type id 56 integer = 4 bytes ( id column).

Cache

Cache Servers Testing Storage

Analyzing a High Rate of Paging

Brendan Gregg

AUGUST 29, 2021

Reads usually have apps waiting on them; writes may not (write-back caching). This is a 64-Gbyte memory system, and 48 Gbytes is in the page cache (the file system cache). Along with the numbers from the problem statement, this gives me a theory: Do the 100-Gbyte files bust the page cache, whereas 40-Gbyte files fit?

Cache

Cache C++ AWS Systems

Progress Delayed Is Progress Denied

Alex Russell

APRIL 29, 2021

This post mines publicly available data on the pace of compatibility fixes and feature additions to assess the claim. The information it captures is, however, available going back somewhat further, providing a fuller picture of the trend lines of engine completeness. Count of APIs available from JavaScript by Web Confluence.

Media

Media Games Education Engineering

AMD EPYC Processors in Azure Virtual Machines

SQL Performance

APRIL 8, 2019

These VMs are not available in all regions, so you will want to check the availability in the Azure region that you are interested in using. The L3 cache size is 64MB. As 128GB DDR4 DIMMs become more widely available that total capacity will double. The L3 cache size is 64MB. lanes for I/O connectivity.

Azure

Azure Virtualization Storage Benchmarking

Content Management Systems of the Future: Headless, JAMstack, ADN and Functions at the Edge

Abhishek Tiwari

NOVEMBER 3, 2018

They often get blindsided by vendor’s pitch and end-up making decision based on some fancy demos (see my post from 2014 on Adobe AEM ). Circa 2014, I was working with a big Japanese automotive brand in Australia. However, it is important to note that JAMstack can serve both static as well as dynamic content.

Systems

Systems Cache Website Network

Trade-offs under pressure: heuristics and observations of teams resolving internet service outages (Part II)

The Morning Paper

JANUARY 23, 2020

Today we’ll be digging into the analysis of an incident that took place at Etsy on December 4th, 2014. The shop had been closed so no data was available. This is part 2 of our look at Allspaw’s 2015 master thesis (here’s part 1 ). 1:32pm the API errors were narrowed down to requests for data on a specific single shop.

Internet

Internet Internet Cache Engineering

The Performance Inequality Gap, 2021

Alex Russell

MARCH 6, 2021

A then-representative $200USD device had 4-8 slow (in-order, low-cache) cores, ~2GiB of RAM, and relatively slow MLC NAND flash storage. Modern network performance and availability. mid-priced Androids were slightly faster than 2014's iPhone 6. The Moto G4 , for example. Here begins our 2021 adventure. Hard Reset.

Performance

Performance Network Cache Metrics

How To Add eBPF Observability To Your Product

Brendan Gregg

JULY 2, 2021

cachestat File system cache statistics line charts 7. As an extreme example, I wrote cachestat(8) while on vacation in 2014 for use on the Netflix cloud, which was a mix of Linux 3.2 BPF didn't exist on those versions, so I used basic Ftrace capabilities that were available on Linux 3.2. opensnoop Files opened table 3.

Open Source

Open Source Latency Cache Energy

MariaDB vs MySQL: Key Differences and Use Cases

Percona

JUNE 4, 2023

Critical features of MariaDB include robust security features like encryption at rest and in transit, user authentication, and role-based access control (RBAC), as well as high-performance query execution, advanced indexing techniques, and replication, clustering, and sharding, ensuring scalability and high availability.

Open Source

Open Source Servers Storage Scalability

Minimal Logging with INSERT…SELECT and Fast Load Context

SQL Performance

MAY 29, 2019

It can be activated from SQL Server 2008 to 2014 inclusive using documented trace flag 610. GO. -- Clear the plan cache. GO. -- Clear the plan cache. GO. -- Clear the plan cache. Available by default from SQL Server 2016 (trace flag 692 disables). The current implementation caches the value for the whole batch.

Cache

Cache Testing Servers Code

Understanding Execution Plan Operator Timings

SQL Performance

MARCH 8, 2021

SQL Server 2014 SP2 and later produce runtime (“actual”) execution plans that can include elapsed time and CPU usage for each execution plan operator (see KB3170113 and this blog post by Pedro Lopes). Total elapsed time is 933ms with 6,673ms of CPU time with a warm cache. The orange producer times may be long due to CXPACKET waits.

Servers

Servers Tuning Architecture Processing

Viewing and Sorting XEvents Efficiently (Code Samples) – XEProfiler

SQL Server According to Bob

DECEMBER 31, 2018

This was a project I created in 2014 to help Microsoft SQL Server support process incoming XEvent files, including the ability to merge XEvent files from multiple servers such as replication or high availability XEvent capture. iBytesRead = s.Read(bData, 0, c_iMaxReadSize); } }.

Efficiency

Efficiency Code Servers Cache

Technology Performance Pulse

Cache-Control for Civilians

The Return of the Frame Pointers

Trending Sources

Analyzing a High Rate of Paging

How To Add eBPF Observability To Your Product

Minimal Logging with INSERT…SELECT into Empty Clustered Tables

Analyzing a High Rate of Paging

Progress Delayed Is Progress Denied

AMD EPYC Processors in Azure Virtual Machines

Content Management Systems of the Future: Headless, JAMstack, ADN and Functions at the Edge

Trade-offs under pressure: heuristics and observations of teams resolving internet service outages (Part II)

The Performance Inequality Gap, 2021

How To Add eBPF Observability To Your Product

MariaDB vs MySQL: Key Differences and Use Cases

Minimal Logging with INSERT…SELECT and Fast Load Context

Understanding Execution Plan Operator Timings

Viewing and Sorting XEvents Efficiently (Code Samples) – XEProfiler

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