Date: Sat, 9 Oct 2021 21:41:28 +0200 From: Sebastian Huber <sebastian.huber@embedded-brains.de> To: freebsd-hackers@freebsd.org Subject: Why was the timehands_count sysctl added? Message-ID: <2d1d2a6d-ec6b-7f52-8af3-09a833c52820@embedded-brains.de>
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Hello, I synchronize currently the port of the FreeBSD timecounters to RTEMS=20 and came across a change in 2019 which I do not understand. Some time=20 ago the timehands were reduced from 10 to two: https://reviews.freebsd.org/D7302 In 2019 this changed again to be up to 16: https://reviews.freebsd.org/D21563 The corresponding sysctl is not documented: https://www.freebsd.org/cgi/man.cgi?query=3Dtimecounters&sektion=3D4 Does someone know why this sysctl to select the count of timehands was=20 added? Is this a performance optimization for some systems? Best regards, Sebastian --=20 embedded brains GmbH Herr Sebastian HUBER Dornierstr. 4 82178 Puchheim Germany email: sebastian.huber@embedded-brains.de phone: +49-89-18 94 741 - 16 fax: +49-89-18 94 741 - 08 Registergericht: Amtsgericht M=C3=BCnchen Registernummer: HRB 157899 Vertretungsberechtigte Gesch=C3=A4ftsf=C3=BChrer: Peter Rasmussen, Thomas= D=C3=B6rfler Unsere Datenschutzerkl=C3=A4rung finden Sie hier: https://embedded-brains.de/datenschutzerklaerung/
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