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<tr bgcolor=#CCCCE7><td><font size=2><b>19195</b></font></td>
<td bgcolor=#ffffff><font size=2> </font></td>
<td><font size=2><b>Upgraded to 2.6, using xntpd, but the system clock is drifting. Worked fine</b></font></td>
<td bgcolor=#ffffff><font size=2> </font></td>
<td><font size=2><b>4 Sep 1999</b></font></td>
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<td><font size=2 color=#ffffff><b><a name=Problem-Description>Problem Description</a></b></font></td>
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<pre>Ever since upgrading to Solaris 2.6, the system clock has been drifting and
there are messages like 'synchronisation lost', 'Previous time adjustment
didn''t complete' and 'time reset (step)' a lot in the /var/adm/messages
file. The system either was previously working fine with the freeware
xntpd or the configuration was copied from another system that was
using the freeware version.
-- 23-Apr-99 08:22 US/Eastern --</pre><table width=100% cellpadding=2 cellspacing=0 border=0><tr bgcolor=#999999>
<td><font size=2 color=#ffffff><b><a name=Problem-Solution>Problem Solution</a></b></font></td>
<td align=right><b><a href="#top"><font size=2 color=#ffffff>Top</font></a></b></td></tr></table>
<pre>The common lore for setting up xntpd on Solaris using
the freeware version included the warning to set the
kernel variable <font color=red>dosynctodr</font> to 0 in the /etc/system
file thus: set <font color=red>dosynctodr</font>=0
When using NTP on Solaris 2.6 or later, the kernel
variable MUST be left at the default value of 1. Prior
to 2.6 this variable controlled whether or not to rein
in the softclock using the hardware clock, with the result
that NTP and the hardware clock would fight for control of
the soft clock; thus before 2.6 you had to set <font color=red>dosynctodr</font>
to 0. At 2.6, every system call that adjusts the softclock
also sets the hard clock, thus while NTP controls the soft
clock, the hard clock is also controlled. Setting
<font color=red>dosynctodr</font> to 0 reverts the behavior back to the pre 2.6
defaulkt behavior, having exactly the opposite effect
as that intended.
Do not set <font color=red>dosynctodr</font> to 0.</pre><table width=100% cellpadding=2 cellspacing=0 border=0>
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<td bgcolor=#cccccc valign=top width=75%><font size=2>Bundled Network</font></td></tr>
<tr><td bgcolor=#999999 valign=top width=25%><font color=#ffffff size=2><b><a name=Product>Product</a></b></font></td>
<td bgcolor=#cccccc valign=top width=75%><font size=2>NTP</font></td></tr>
<tr><td bgcolor=#999999 valign=top width=25%><font color=#ffffff size=2><b><a name=OS>OS</a></b></font></td>
<td bgcolor=#cccccc valign=top width=75%><font size=2>Solaris 2.6</font></td></tr>
<tr><td bgcolor=#999999 valign=top width=25%><font color=#ffffff size=2><b><a name=Hardware>Hardware</a></b></font></td>
<td bgcolor=#cccccc valign=top width=75%><font size=2>Ultra 2</font></td></tr>
<tr><td bgcolor=#999999 valign=top width=25%><font color=#ffffff size=2><b><a name=Document-Content>Document Content</a></b></font></td>
<td bgcolor=#cccccc valign=top width=75%><font size=2>with freeware xntpd.</font></td></tr>
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