The Morning Paper

NOVEMBER 5, 2019

File systems unfit as distributed storage backends: lessons from 10 years of Ceph evolution Aghayev et al., In this case, the assumption that a distributed storage backend should clearly be layered on top of a local file system. A distributed file system provides a unified view over aggregated storage from multiple physical machines.

Storage 64

Storage Systems Hardware Efficiency 64

Adrian Cockcroft

JUNE 21, 2022

Photo by Adrian I spent six years at Cambridge Consultants, building some interesting systems, managing our Sun workstations and learning a lot, but by then Sun had opened a sales office across the street, and I wanted to find out what they were going to release next, before everyone else.

Tuning 52

Tuning Benchmarking Engineering C++ 52

Sutter's Mill

JANUARY 11, 2021

And asserted conditions only evaluated if they’re enabled, so any side effects won’t happen when they’re not enabled; they might sometimes perform local side effects, such as to do logging or allocate memory, but the program should never rely on them happening or not happening. Assertions are only about finding bugs, not doing program work.

C++ 58

C++ Programming Code Testing 58

Brendan Gregg

OCTOBER 8, 2018

Created by Alastair Robertson , bpftrace is an open source high-level tracing front-end that lets you analyze systems in custom ways. eBPF (extended Berkeley Packet Filter) is in the Linux kernel and is the new hotness in systems engineering. It's shaping up to be a DTrace version 2.0: Attaching 2 probes. ^C variable curthread curtask.

C++ 110

C++ Virtualization Programming Latency 110

Brendan Gregg

OCTOBER 7, 2018

Created by Alastair Robertson , bpftrace is an open source high-level tracing front-end that lets you analyze systems in custom ways. eBPF (extended Berkeley Packet Filter) is in the Linux kernel and is the new hotness in systems engineering. It's shaping up to be a DTrace version 2.0: Attaching 2 probes. ^C variable curthread curtask.

C++ 40

C++ Virtualization Programming Latency 40

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. First, a bit of operating-system design context. Timer interrupts and their raison d’être. That’s crazy!

Programming 145

Programming Games Hardware Operating System 145

Percona

AUGUST 29, 2023

Reference tables can be replicated to all nodes for joins and foreign keys from distributed tables and for maximum read performance. Depending on the configuration, one can tune a hardware RAID for either performance or redundancy. The same can be said for Citus data sharding. The colors indicate duplicated shards of the table.

C++ 81

C++ Database Storage Testing 81