Percona

JUNE 2, 2023

Not because MySQL wasn’t performant but because the out-of-the-box defaults weren’t adequate for heavy traffic. Developers, system administrators, database administrators, and enthusiasts were hip deep in open source operating systems, programming languages, and open databases like MySQL and PostgreSQL. Not so much.

Open Source 92

Open Source Traffic Tuning Database 92

Adrian Cockcroft

JUNE 21, 2022

I became the Sun UK local specialist in performance and hardware, and as Sun transitioned from a desktop workstation company to sell high end multiprocessor servers I was helping customers find and fix scalability problems. Rich became co-author of the second edition of the Sun Performance Tuning book, to describe how it worked.

Tuning 52

Tuning Benchmarking Engineering C++ 52

Brendan Gregg

MARCH 16, 2024

I'm sure this delivered large performance improvements and I wouldn't try arguing against it. As my former Sun Microsystems colleague Eric Schrock (nickname Schrock) wrote in November 2004 : "On i386, you at least had the advantage of increasing the number of usable registers by 20%.

Java 145

Java Cache Google Hardware 145

Sutter's Mill

JANUARY 11, 2021

An assertion documents the expected state of specific program variables at the point where the assertion is written, in a testable way so that we can find program bugs — logic errors that have led to corrupted program state. Assertions are only about finding bugs, not doing program work.

C++ 58

C++ Programming Code Testing 58

Brendan Gregg

OCTOBER 8, 2018

Syscall count by program bpftrace -e 'tracepoint:raw_syscalls:sys_enter { @[comm] = count(); }'. bcc is powerful but laborious to program. Internally, bpftrace uses a lex/yacc parser to convert programs to AST, then llvm IR actions, then BPF. in 2004, so I have to think back to that time to understand it.

C++ 110

C++ Virtualization Programming Latency 110

Randon ASCII

OCTOBER 4, 2020

The behavior of the Windows scheduler changed significantly in Windows 10 2004, in a way that will break a few applications, and there appears to have been no announcement, and the documentation has not been updated. It is desirable for a program to be able to go to sleep and then wake up a little while later. Decades of madness.

Programming 145

Programming Games Hardware Operating System 145

Randon ASCII

DECEMBER 9, 2018

Last week I wrote about the performance consequences of inadvertently loading gdi32.dll This is the first sign of the performance problems that will happen during process destruction. dll into processes that are created and destroyed at very high rates. Unpossible! Process destruction (2.3

Processing 53

Processing Traffic Testing Systems 53