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https://news.ycombinator.com/item?id=9053074
Feb 15, 2015 · The statement that the "pf" in OpenBSD is "better" isn't necessarily true. The "pf" in FreeBSD and pfSense is a bunch faster, even on single-core. the IPsec in FreeBSD and pfSense (especially AES-GCM) is also, much faster than that found in OpenBSD. OpenBSD has a problem: it doesn't scale on multi-core CPUs, and the world has gone multi-core.
https://en.wikipedia.org/wiki/OpenBSD
OpenBSD is a free and open-source Unix-like operating system based on the Berkeley Software Distribution. Theo de Raadt created OpenBSD in 1995 by forking NetBSD.According to de Raadt, OpenBSD is a research operating system for developing security mitigations.. The system is intended to be secure by default.Many of its security features are not included in other operating systems.OS family: Unix-like
http://www.h-online.com/open/news/item/OpenBSD-5-2-arrives-with-improved-multi-core-support-1742192.html
Nov 02, 2012 · OpenBSD 5.2 arrives with improved multi-core support. The OpenBSD 5.2 poster Source: OpenBSD The OpenBSD project has released version 5.2 of its free BSD-based UNIX-like operating system. According to its developers, the most important change in the new release is the switch from user-level to kernel-level threads. ... OpenBSD 5.2 is available ...
https://www.openbsd.org/i386.html
OpenBSD/i386 supports most SMP (Symmetrical MultiProcessor) systems, including multi-chip, multi-core and/or hyperthreading designs. To support SMP operation, a separate SMP kernel (bsd.mp) is included with the installation file sets. Unsupported Hardware: New hardware is constantly being released, some of which may lack support.
https://www.linux.com/news/openbsd-52-arrives-improved-multi-core-support/
Nov 02, 2012 · The OpenBSD development team has released version 5.2 of its free BSD-based UNIX-like operating system. The most important change is that OpenBSD’s multi-threading support has now been switched from userland to kernel threads. Read more at The H
https://news.ycombinator.com/item?id=4729150
OpenBSD has a huge anti-NIH sentiment. This can be a good thing, as bringing in code from others = bringing in their bugs as well. For example, rather than import the quite huge Intel formulated ACPI stack, they have one of the only non-Intel, non-Windows one out there.
https://fudzilla.com/news/46581-openbsd-stops-support-for-intel-cpu-hyper-threading
Jun 20, 2018 · The OpenBSD project is killing off support for Intel CPU hyper-threading due to security concerns regarding the theoretical threat of more "Spectre-class bugs". For …
https://forums.freebsd.org/threads/clarity-freebsd-vs-netbsd.40168/
Jan 17, 2014 · It has not had SMP for anywhere near as many years as FreeBSD, and there's been a long development path for FreeBSD since the 5.x series to improve multi-core support. Multicore on Open/Net BSD is a relatively new development, and all the free operating systems, including Linux, have had a long and tortuous path to remove excessive locking from ...
https://appuals.com/openbsd-project-announces-theyre-disabling-intel-ht-support-by-default/
Jun 20, 2018 · Representatives from the OpenBSD project announced today on their mailing list that they’ll soon be disabling support for hyper-threading (HT) technology on machines that use Intel-based CPU architectures. With many people concerned about …
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