ZettaCache Disk I/O Imbalance Bug January 2023

... and a quick workaround

Perf Experiment Fail [μ] October 2022

Aesthetically pleasing graphs from bogus setups..

Bonwick's ZFS Blog Posts [Mirror] November 2021

In case those entries ever get deleted

Libdmem January 2020

An Experiment In Userland Memory Debugging

A Year Of SDB Work December 2019

aka [S]erapheim [D]imitropoulos's [B]ugs

OS Debugging At Delphix - From Illumos to Linux October 2019

The Slick Debugger - What and why?

ZFS Checkpoint Internals February 2019

A high-level overview

ZFS Log Spacemap - The Flushing Algorithm September 2018

From design and simulations to implementation and debugging

ZFS Flamegraph Analysis Example [μ] August 2018

sequential reads of cached data ... zoom zoom ...

OpenZFS Dev Summit 2017 videos December 2017

...and some bonus source code

ZFS Snapshot Unmounting July 2017

A quick performance win!

ZFS Storage Pool Checkpoint April 2017

Save Game, Fail, Reload

OpenZFS Developer Summit 2016 October 2016

Channel Programs, Encryption, ... Oh my!

Hello, Delphix! August 2016

First time full-time

The journey of a ZFS read() call in 1 min [μ] August 2016

Printing codepaths with DTrace

How does my computer know about time zones? June 2016

... and what happens when a timezone changes?

Notes on Testing: Legacy code in illumos December 2014

Looking at binary differences between builds

Scripting GDB February 2014

Automation = less interaction