Episode 372

Slow SSD scrubs


October 15th, 2020

48 mins 4 secs

Your Hosts

About this Episode

Wayland on BSD, My BSD sucks less than yours, Even on SSDs, ongoing activity can slow down ZFS scrubs drastically, OpenBSD on the Desktop, simple shell status bar for OpenBSD and cwm, and more.

This episode of BSDNow is brought to you by Tarsnap


Wayland on BSD

After I posted about the new default window manager in NetBSD I got a few questions, including "when is NetBSD switching from X11 to Wayland?", Wayland being X11's "new" rival. In this blog post, hopefully I can explain why we aren't yet!

My BSD sucks less than yours

This paper will look at some of the differences between the FreeBSD and OpenBSD operating systems. It is not intended to be solely technical but will also show the different "visions" and design decisions that rule the way things are implemented. It is expected to be a subjective view from two BSD developers and does not pretend to represent these projects in any way.


News Roundup

Even on SSDs, ongoing activity can slow down ZFS scrubs drastically

Back in the days of our OmniOS fileservers, which used HDs (spinning rust) across iSCSI, we wound up changing kernel tunables to speed up ZFS scrubs and saw a significant improvement. When we migrated to our current Linux fileservers with SSDs, I didn't bother including these tunables (or the Linux equivalent), because I expected that SSDs were fast enough that it didn't matter. Indeed, our SSD pools generally scrub like lightning.

OpenBSD on the Desktop (Part I)

Let's install OpenBSD on a Lenovo Thinkpad X270. I used this computer for my computer science studies. It has both Arch Linux and Windows 10 installed as dual boot. Now that I'm no longer required to run Windows, I can ditch the dual boot and install an operating system of my choice.

A simple shell status bar for OpenBSD and cwm(1)

These days, I try to use simple and stock software as much as possible on my OpenBSD laptop. I’ve been playing with cwm(1) for weeks and I was missing a status bar. After trying things like Tint2, Polybar etc, I discovered @gonzalo’s termbar. Thanks a lot!
As I love scripting, I decided to build my own.

Beastie Bits

DragonFly v5.8.3 released to address to issues
OpenSSH 8.4 released


  • This weeks episode of BSDNow was sponsored by our friends at Tarsnap, the only secure online backup you can trust your data to. Even paranoids need backups.


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