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187<tr bgcolor=#CCCCE7><td><font size=2><b>19195</b></font></td>
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189<td><font size=2><b>Upgraded to 2.6, using xntpd, but the system clock is drifting. Worked fine</b></font></td>
190<td bgcolor=#ffffff><font size=2>&nbsp;</font></td>
191<td><font size=2><b>4 Sep 1999</b></font></td>
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195<td><font size=2 color=#ffffff><b><a name=Problem-Description>Problem Description</a></b></font></td>
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197<pre>Ever since upgrading to Solaris 2.6, the system clock has been drifting and
198there are messages like 'synchronisation lost', 'Previous time adjustment
199didn''t complete' and 'time reset (step)' a lot in the /var/adm/messages 
200file. The system either was previously working fine with the freeware
201xntpd or the configuration was copied from another system that was 
202using the freeware version.
203-- 23-Apr-99 08:22 US/Eastern --</pre><table width=100%><tr bgcolor=#999999>
204<td><font size=2 color=#ffffff><b><a name=Problem-Solution>Problem Solution</a></b></font></td>
205<td align=right><b><a href="#top"><font size=2 color=#ffffff>Top</font></a></b></td></tr></table>
206<pre>The common lore for setting up xntpd on Solaris using
207the freeware version included the warning to set the 
208kernel variable <font color=red>dosynctodr</font> to 0 in the /etc/system 
209file thus: set <font color=red>dosynctodr</font>=0
210
211When using NTP on Solaris 2.6 or later, the kernel 
212variable MUST be left at the default value of 1. Prior 
213to 2.6 this variable controlled whether or not to rein  
214in the softclock using the hardware clock, with the result 
215that NTP and the hardware clock would fight for control of 
216the soft clock; thus before 2.6 you had to set <font color=red>dosynctodr</font> 
217to 0. At 2.6, every system call that adjusts the softclock 
218also sets the hard clock, thus while NTP controls the soft 
219clock, the hard clock is also controlled. Setting 
220<font color=red>dosynctodr</font> to 0 reverts the behavior back to the pre 2.6 
221defaulkt behavior, having exactly the opposite effect 
222as that intended.
223
224Do not set <font color=red>dosynctodr</font> to 0.</pre><table width=100%>
225<tr><td bgcolor=#999999 valign=top width=25%><font color=#ffffff size=2><b><a name=Product-Area>Product Area</a></b></font></td>
226<td bgcolor=#cccccc valign=top width=75%><font size=2>Bundled Network</font></td></tr>
227<tr><td bgcolor=#999999 valign=top width=25%><font color=#ffffff size=2><b><a name=Product>Product</a></b></font></td>
228<td bgcolor=#cccccc valign=top width=75%><font size=2>NTP</font></td></tr>
229<tr><td bgcolor=#999999 valign=top width=25%><font color=#ffffff size=2><b><a name=OS>OS</a></b></font></td>
230<td bgcolor=#cccccc valign=top width=75%><font size=2>Solaris 2.6</font></td></tr>
231<tr><td bgcolor=#999999 valign=top width=25%><font color=#ffffff size=2><b><a name=Hardware>Hardware</a></b></font></td>
232<td bgcolor=#cccccc valign=top width=75%><font size=2>Ultra 2</font></td></tr>
233<tr><td bgcolor=#999999 valign=top width=25%><font color=#ffffff size=2><b><a name=Document-Content>Document Content</a></b></font></td>
234<td bgcolor=#cccccc valign=top width=75%><font size=2>with freeware xntpd.</font></td></tr>
235</table><br clear>
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