Compiling the NetBSD kernel as a benchmark.
For a while, I've been compiling my own NetBSD kernel. Just for a few options, mainly CARP, at first for my Raspberry Pis, and at the moment for paravirtualized Xen domUs. Compiling a custom NetBSD kernel is a very easy task, it's just a matter of 3 main steps...
https://blog.anotherhomepage.org/post/2022/05/25/Compiling-the-NetBSD-kernel-as-a-benchmark/
#kernel #system
For a while, I've been compiling my own NetBSD kernel. Just for a few options, mainly CARP, at first for my Raspberry Pis, and at the moment for paravirtualized Xen domUs. Compiling a custom NetBSD kernel is a very easy task, it's just a matter of 3 main steps...
https://blog.anotherhomepage.org/post/2022/05/25/Compiling-the-NetBSD-kernel-as-a-benchmark/
#kernel #system
NetBSD 9.3 released.
The NetBSD Project is pleased to announce NetBSD 9.3, the third release from the NetBSD 9 stable branch.
https://blog.netbsd.org/tnf/entry/netbsd_9_3_released
#release #system
The NetBSD Project is pleased to announce NetBSD 9.3, the third release from the NetBSD 9 stable branch.
https://blog.netbsd.org/tnf/entry/netbsd_9_3_released
#release #system
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Forwarded from OpenBSD
Installing OpenBSD on Scaleway Elastic Metal.
The instructions below will roughly stay the same should you want to install NetBSD or FreeBSD instead of OpenBSD...
https://www.senzilla.io/blog/2022/08/10/installing-openbsd-scaleway-elastic-metal/
#install #system
The instructions below will roughly stay the same should you want to install NetBSD or FreeBSD instead of OpenBSD...
https://www.senzilla.io/blog/2022/08/10/installing-openbsd-scaleway-elastic-metal/
#install #system
Is the NetBSD operating system losing its competitive edge to Linux and FreeBSD?
I’m not entirely sure there was ever a “competitive edge” that NetBSD had over FreeBSD… and the differences between any of the BSDs and Linux are vast — some of them are important, others not so much...
https://www.quora.com/Is-the-NetBSD-operating-system-losing-its-competitive-edge-to-Linux-and-FreeBSD/answer/Stan-Hanks
#system #justread
I’m not entirely sure there was ever a “competitive edge” that NetBSD had over FreeBSD… and the differences between any of the BSDs and Linux are vast — some of them are important, others not so much...
https://www.quora.com/Is-the-NetBSD-operating-system-losing-its-competitive-edge-to-Linux-and-FreeBSD/answer/Stan-Hanks
#system #justread
Crash Override: NetBSD 5.0-9.3 Coredump Kernel Refcount LPE.
NetBSD 5.0 (released 2009) introduced a change to the in-kernel coredump handler that accidentally introduced a reference count bug on the crashing process' credential. Triggering the vulnerability leads to a use-after-free that can be trivially (though slowly) exploited to achieve local privilege escalation, gaining root from an unprivileged starting point...
https://accessvector.net/2022/netbsd-coredump-lpe
#kernel #system
NetBSD 5.0 (released 2009) introduced a change to the in-kernel coredump handler that accidentally introduced a reference count bug on the crashing process' credential. Triggering the vulnerability leads to a use-after-free that can be trivially (though slowly) exploited to achieve local privilege escalation, gaining root from an unprivileged starting point...
https://accessvector.net/2022/netbsd-coredump-lpe
#kernel #system
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Hunting kernel lock and interrupt latency.
Too much of the kernel still runs with the kernel lock, which is bad for performance -- and especially for interactive system responsiveness, since most of wscons including keyboard and mouse input still use the kernel lock. On single-CPU systems, the same problem arises with interrupt latency on its own...
https://mail-index.netbsd.org/tech-kern/2022/10/30/msg028499.html
#kernel #troubleshooting #system
Too much of the kernel still runs with the kernel lock, which is bad for performance -- and especially for interactive system responsiveness, since most of wscons including keyboard and mouse input still use the kernel lock. On single-CPU systems, the same problem arises with interrupt latency on its own...
https://mail-index.netbsd.org/tech-kern/2022/10/30/msg028499.html
#kernel #troubleshooting #system
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