TechSNAP

396: Floating Point Problems

January 31st, 2019  |  27 mins 11 secs

avx, cddl, checksum, clone, data integrity, devops, floating point, fpu, freebsd, gpl, hardware acceleration, header, journaling, kernel module, kernel preemption, lfnw, linux, multitasking, openzfs, oracle, raid, simd, snapshot, software license, storage, sysadmin podcast, techsnap, vectorized instructions, zfs, zfs on linux, zol, zvol

Jim and Wes are joined by OpenZFS developer Richard Yao to explain why the recent drama over Linux kernel 5.0 is no big deal, and how his fix for the underlying issue might actually make things faster.

393: Back to our /roots

January 3rd, 2019  |  22 mins 22 secs

allan jude, automation, aws, bitcoin, cloud, devops, dropbox, flash, freebsd, information density, jim salter, networking, psn breach, security, security breach, sony, ssl, sysadmin podcast, techsnap, tls, wordpress

In a special new year’s episode we take a moment to reflect on the show’s past, its future, and say goodbye to an old friend.

Episode 379: SegmentSmack is Whack

August 10th, 2018  |  29 mins 16 secs

buffer overflow, eric holmes, freebsd, github audit, gitrob, homebrew, linux, segmentsmack, sysadmin podcast, techsnap, trufflehog, uefi remote attack, undersea data center

Take down a Linux or FreeBSD box with just 2kpps of traffic, own Homebrew in 30 minutes, and infiltrate an entire network via the Inkjet printers.

Episode 366: Catching up with Allan

May 2nd, 2018  |  48 mins 32 secs

allan jude, benchmarking, chipsec, freebsd, honeypot, linuxfest northwest, micah lee, network bottlenecks, qnx, remote exploit, sysadmin podcast, techsnap, uefitool, volkswagen vulnerabilities, zfs compression

We catch up with Allan Jude and he shares stories of hunting network bottlenecks, memories of old firewalls, and some classic ZFS updates.

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.