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Date:      Thu, 23 Jul 2015 11:52:34 +0200
From:      deco33000@yandex.com
To:        freebsd-amd64@freebsd.org
Subject:   kernel timers and clocks
Message-ID:  <239381437645154@web15m.yandex.ru>
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Hello,

I am trying to figure out how timers work for the amd64 platform on freebsd 10.

How the kernel manage the timers? is it using TSC?

I see lot of functions using getnanotime and friend but I don't get how they work. 
They just iterate over time and read a volatile value. Where/how is that value kept updated?

Thanks

--š
Jog
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