TechSNAP

430: All Good Things

May 29th, 2020  |  52 mins 9 secs

a cloud guru, anaconda, benchmarking, blivet, block size, centos, chunk, copy-on-write, dash to dock, devops, dkms, dnf, earlyoom, fedora, fedora 32, fedora workstation, filesystem, fuse, gnome, hard drive, hdd, iops, jupiter broadcasting, linux, lts, matthew miller, oom, openzfs, parity, ppa, raid, raid6, raidz, red hat, rolling release, spindle count, ssd, storage, sysadmin podcast, systemd, techsnap, throughput, ubuntu, vdev, wayland, x11, zfs, zpool

It's a storage showdown as Jim and Wes bust some performance myths about RAID and ZFS.

427: Gigahertz Games

April 17th, 2020  |  51 mins 29 secs

10th-generation, 20.04, 5g, 6ghz, a cloud guru, amd, amiga, assembly, asus zephyrus g14, bsd, cell towers, comet lake, computer graphics, coronavirus, covid-19, demoscene, devops, farbrausch, fcc, focal fossa, freebsd, gaming laptop, ghostbsd, gnome, h-series, intel, jupiter broadcasting, mate, mod, overclocking, pc-bsd, project trident, ryzen 9, s3m, sysadmin podcast, techsnap, tracker, ubuntu, unix, void linux, wi-fi, wi-fi 6, wi-fi 6e, wireless spectrum, zfs on root

Jim finally gets his hands on an AMD Ryzen 9 laptop, some great news about Wi-Fi 6e, and our take on FreeBSD on the desktop.

426: Storage Stories

April 3rd, 2020  |  31 mins 17 secs

a cloud guru, andoird, block device, cloudfare, crypto, debian, device mapper, devops, dm-crypt, dm-zoned, encryption, exfat, filesystems, firmware, free software, fud, google, jupiter broadcasting, kernel module, linux 5.6, microsoft, networking, ntfs, ntfs-3g, nvme, open source, paragon software, raid, samba, samsung, seagate, security, shingled magnetic recording, smb, smr, ssd, sysadmin podcast, techsnap, ubuntu, western digital, windows, wireguard, zfs, zoned storage, zonefs

We take a look at Cloudflare's impressive Linux disk encryption speed-ups, and explore how zoned storage tools like dm-zoned and zonefs might help mitigate the downsides of Shingled Magnetic Recording.

425: Ryzen Gets Real

March 20th, 2020  |  32 mins 53 secs

20.04, a cloud guru, acme, amd, apt, atx12vo, automation, battery life, boulder, caa, canonical, computer hardware, cpu, devops, dns, electronics, freenas, fusion pools, gaming, go, gpu, graphics, https, integrated graphics, intel, ixsystems, jupiter broadcasting, laptop, lenovo, let's encrypt, linux academy, mobile processors, motherboard, power supply, psu, ryzen, ryzen 4000, ryzen mobile, sanoid, snapshots, storage, sysadmin podcast, techsnap, tls, truenas, truenas core, ubuntu, zfs, zsys

We take a look at AMD's upcoming line of Ryzen 4000 mobile CPUs, and share our first impressions of Ubuntu 20.04's approach to ZFS on root.

423: Hopeful for HAMR

February 21st, 2020  |  29 mins 36 secs

18.04, 18.04.4, a cloud guru, arc, benchmarks, cache, caching, clear linux, clear linux os, devops, filesystems, hamr, hard drives, hardware enablement, hdd, intel, jupiter broadcasting, l2arc, latency, linux, linux academy, linux desktop, lru, lts, maintenance release, mamr, microsoft, mobaxterm, performance, seagate, smr, storage, swupd, sysadmin podcast, techsnap, throughput, ubuntu, western digital, wifi, windows, wsl, zfs, zfs on linux, zol

We explore the potential of heat-assisted magnetic recording and get excited about a possibly persistent L2ARC.

420: Choose Your Own Compiler

January 10th, 2020  |  24 mins 10 secs

4g, 5g, broadband, c, canonical, cell phones, clang, compilers, debian, devops, fr1, fr2, gcc, gnu, init system, jupiter broadcasting, kernel development, linux, linux kernel, llvm, lte, michael larabel, mmwave, mobile, netplan, networking, phoronix, south korea, systemd, systemd-networkd, systems programming, techsnap, telephony, ubuntu, unity, wireless

Compiling the Linux kernel with Clang has never been easier, so we explore this alternative compiler and what it brings to the ecosystem.

414: Rooting for ZFS

October 18th, 2019  |  42 mins 27 secs

19.10, 2g, 5.3, amazon sidewalk, backups, boot environments, btrfs, canonical, copy on write, data integrity, devops, eoan, freebsd, google wifi, jupiter broadcasting, lora, lorawan, low bandwidth, mesh wifi, nest wifi, rf chirp, sigfox, snapshots, spread spectrum, surefi, techsnap, tp-link, ubuntu, unifi, wifi, wireless, wireless networking, zfs, zsys

We dive into Ubuntu 19.10's experimental ZFS installer and share our tips for making the most of ZFS on root. 

401: Everyday ZFS

April 11th, 2019  |  47 mins 35 secs

ashift, backups, cddl, checksum, copy on write, copyleft, data integrity, devops, ecc, filesystems, freebsd, gpl, hard disks, hard drives, iops, linux, openzf s, raid, raidz, snapshots, solaris, ssd, sun microsystems, sysadmin podcast, techsnap, throughput, ubuntu, vdez, zfs, zfs on linux, zfs on root, zol

Jim and Wes sit down to bust some ZFS myths and share their tips and tricks for getting the most out of the ultimate filesystem.

Episode 351: Performance Meltdown

January 11th, 2018  |  41 mins 43 secs

backdoor, coordinated disclosure, freebsd, kaiser, kpti, macos high sierra, meltdown, pcid, perfmon, performance, pti, side-channel attack, spectre, speculative execution, sysadmin podcast, sysinternals, techsnap, ubuntu, wd my cloud

The types of workloads that will see the largest performance impacts from Meltdown, tools to test yourself, and the outlook for 2018.

Plus a concise breakdown of Meltdown, Spectre, and side-channel attacks like only TechSNAP can.