|
| From: | M. Warner Losh |
| Subject: | Re: [Qemu-devel] [PATCH 2/2] set migration max downtime |
| Date: | Sun, 24 May 2009 16:40:41 -0600 (MDT) |
In message: <address@hidden>
Avi Kivity <address@hidden> writes:
: Anthony Liguori wrote:
: >> I prefer seconds (and bytes).
: >
: > As a floating point value?
:
: Yes. More than enough spacecraft have been lost due to errors in unit
: conversion.
Floating point values don't have enough resolution to represent
picosecond precision with a unix time-scale range. Had one bug where
a system mysteriously stopped working after the unix epoch got big
enough that it could no longer compute the differences between events
with enough precision to have a stable PLL for the controlled
signals...
Warner
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