Episode Details

147: Release all the things!

Published 9 years, 9 months ago

On this episode of BSDNow, we will be talking to Glen Barber and Peter Wemm of the FreeBSD RE and Cluster Admin teams! That plus our

We often get comments from our listeners, “I’m not a developer, how can I help out”?
Well today is your chance to do something. The FreeBSD Foundation has its 2016 Community Survey online, where they are asking for feedback from you!
I just did the survey, it’ll take you about 5 minutes, but gives you a chance to provide valuable feedback to the foundation about things that are important to you.
Be sure to answer in as much detail as possible and the foundation will review and use this feedback for its operations going forward. ***

OpenBSD has changed the way routes are looked up in the kernel as part of their path to an SMP networking stack
The “Allotment Routing Table” (ART) is a performance tradeoff, where more memory is used to store the routing table, in exchange for faster lookups
With this new arrangement, a full BGP routing table will grow from 130MB to 180MB of memory
“ART is a free multibit trie based routing table. To keep it simple, it can be seen as using more memory for fewer CPU cycles. In other words, we get a faster lookup by wasting memory. The original paper presents some performance comparisons between two ART configurations and the BSD Radix. But how does this apply to OpenBSD?”
“I asked Hrvoje Popovski to run his packet forwarding test on his Xeon box (E5-2620 v2 @ 2.10GHz, 2400.34 MHz) with ix(4) (82599) interfaces. The test setup consist of three machines with the OpenBSD box in the middle”
“The simulations have been performed with an OpenBSD -current from June 9th. The machine is configured with pf(4) disabled in order to force a single route lookup for every IPv4 packet. Based on the result of the lookup the kernel decide if it should forward, deliver or drop the packet” ***

The complete set of videos from BSDCan is online and ready to be consumed
Remember the good-ole days where we would wait months (or years) to get videos posted from conferences?
Well, who are we kidding, some conferences STILL do that, but we can’t count BSDCan among them.
Only two weeks out from this years exciting BSDCan, and all the videos have now landed on YouTube.
Granted, this is no substitute for actually being at the conference, but even if you attended you probably missed quite a few of the talks.
There are no videos of the hallway track, which is the best part of the conference
Except the dinner discussion of course.
and don’t forget the hacker lounge ***