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author | phk <phk@FreeBSD.org> | 1998-02-20 16:36:17 +0000 |
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committer | phk <phk@FreeBSD.org> | 1998-02-20 16:36:17 +0000 |
commit | 044e1e629691b102791a17fc6db270846b71b01c (patch) | |
tree | 73eeeac34c8a9254ecd3686eaa03c76379171a5c /sys/powerpc | |
parent | fba9e5d6630c11aef2f66bef4dd7fbf45179be87 (diff) | |
download | FreeBSD-src-044e1e629691b102791a17fc6db270846b71b01c.zip FreeBSD-src-044e1e629691b102791a17fc6db270846b71b01c.tar.gz |
Replace TOD clock code with more systematic approach.
Highlights:
* Simple model for underlying hardware.
* Hardware basis for timekeeping can be changed on the fly.
* Only one hardware clock responsible for TOD keeping.
* Provides a real nanotime() function.
* Time granularity: .232E-18 seconds.
* Frequency granularity: .238E-12 s/s
* Frequency adjustment is continuous in time.
* Less overhead for frequency adjustment.
* Improves xntpd performance.
Reviewed by: bde, bde, bde
Diffstat (limited to 'sys/powerpc')
0 files changed, 0 insertions, 0 deletions