Brendan Gregg

SEPTEMBER 25, 2021

As (C) looked like a kernel rebuild, I started with (D) and (E). ## 5. As I'm interested in the relative comparison I can just compare the total runtimes (the "real" time) for the same result. I also rewrote this in C and called gettimeofday(2) directly: $ cat gettimeofdaybench.c. Try changing the kernel clocksource.

Speed 126

Speed Java AWS Virtualization 126

Brendan Gregg

SEPTEMBER 25, 2021

As (C) looked like a kernel rebuild, I started with (D) and (E). As I'm interested in the relative comparison I can just compare the total runtimes (the "real" time) for the same result. I also rewrote this in C and called gettimeofday(2) directly: $ cat gettimeofdaybench.c Try changing the kernel clocksource.

Speed 52

Speed Java AWS Virtualization 52

Brendan Gregg

SEPTEMBER 25, 2021

As (C) looked like a kernel rebuild, I started with (D) and (E). ## 6. As I'm interested in the relative comparison I can just compare the total runtimes (the "real" time) for the same result. I also rewrote this in C and called gettimeofday(2) directly: $ cat gettimeofdaybench.c Try changing the kernel clocksource.

Speed 40

Speed Java AWS Virtualization 40

HammerDB

OCTOBER 12, 2018

This post complements the previous best practice guides this time with the focus on MySQL and MariaDB and achieving top levels of performance with the HammerDB MySQL TPC-C test. SELECT DISTINCT c from sbtest where id between ? order by c. SELECT c from sbtest where id=? HammerDB difference from Sysbench.

Best Practices 40

Best Practices Scalability Performance C++ 40

Alex Russell

MAY 9, 2022

This blindspot usually extends up to the C-suite. It's challenging for teams climbing the maturity ladder to sift through the many available browser and tool-vendor data points to understand which ones to measure and manage. They sense their previous beliefs about what's "reasonable" need to be re-calibrated.

Performance 86

Performance Latency Metrics Engineering 86

John McCalpin

JANUARY 22, 2018

Since “peak performance” for the processor is two (512-bit SIMD) FMA instructions per cycle, any instructions that are not FMA instructions subtract directly from the available peak performance. 1 12 3 15 15 15.0156 8.0 8.056 0.056 75.0% 74.48% 0.70%. 2 24 3 27 13.5 7.086 0.086 85.71% 84.67% 1.22%. 4 48 3 51 12.75 FMAs/cycle. .

Latency 40

Latency Hardware Code Testing 40

Scalegrid

JULY 13, 2020

Compare PostgreSQL vs. Oracle functionality across available tools, capabilities and services. Not available. Not available. Not available. Comparison Overview. See how open source PostgreSQL Community version costs compare to Oracle Standard Edition and Oracle Enterprise Edition. Compare Functionality. PostgreSQL.

Open Source 244

Open Source Tuning C++ Database 244

SQL Server According to Bob

JANUARY 11, 2020

​​ Various defragmentation ​​ utilities ​​ are ​​ available ​​ on the market today. Therefore, the database can have pages in any one of the three available verification states. SQL Server uses read-ahead logic to avoid query stalls caused by I/O waits.

Servers 40

Servers Cache Database Media 40

Smashing Magazine

JANUARY 11, 2021

Alternatively, you can also use: Addy Osmani’s Chrome UX Report Compare Tool , Speed Scorecard (also provides a revenue impact estimator), Real User Experience Test Comparison or SiteSpeed CI (based on synthetic testing). Layout Shift GIF Generator that visualizes CLS with a simple GIF (also available from the command line).

Performance 145

Performance Cache Media Metrics 145

Smashing Magazine

JANUARY 6, 2020

Alternatively, you can also use Speed Scorecard (also provides a revenue impact estimator), Real User Experience Test Comparison or SiteSpeed CI (based on synthetic testing). Paddy Ganti’s script constructs two URLs (one normal and one blocking the ads), prompts the generation of a video comparison via WebPageTest and reports a delta.

Performance 145

Performance Cache Network Metrics 145