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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> </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
198: there are messages like 'synchronisation lost', 'Previous time adjustment
199: didn''t complete' and 'time reset (step)' a lot in the /var/adm/messages
200: file. The system either was previously working fine with the freeware
201: xntpd or the configuration was copied from another system that was
202: using the freeware version.
203: -- 23-Apr-99 08:22 US/Eastern --</pre><table width=100% cellpadding=2 cellspacing=0 border=0><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
207: the freeware version included the warning to set the
208: kernel variable <font color=red>dosynctodr</font> to 0 in the /etc/system
209: file thus: set <font color=red>dosynctodr</font>=0
210:
211: When using NTP on Solaris 2.6 or later, the kernel
212: variable MUST be left at the default value of 1. Prior
213: to 2.6 this variable controlled whether or not to rein
214: in the softclock using the hardware clock, with the result
215: that NTP and the hardware clock would fight for control of
216: the soft clock; thus before 2.6 you had to set <font color=red>dosynctodr</font>
217: to 0. At 2.6, every system call that adjusts the softclock
218: also sets the hard clock, thus while NTP controls the soft
219: clock, the hard clock is also controlled. Setting
220: <font color=red>dosynctodr</font> to 0 reverts the behavior back to the pre 2.6
221: defaulkt behavior, having exactly the opposite effect
222: as that intended.
223:
224: Do not set <font color=red>dosynctodr</font> to 0.</pre><table width=100% cellpadding=2 cellspacing=0 border=0>
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226: <td bgcolor=#cccccc valign=top width=75%><font size=2>Bundled Network</font></td></tr>
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228: <td bgcolor=#cccccc valign=top width=75%><font size=2>NTP</font></td></tr>
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230: <td bgcolor=#cccccc valign=top width=75%><font size=2>Solaris 2.6</font></td></tr>
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232: <td bgcolor=#cccccc valign=top width=75%><font size=2>Ultra 2</font></td></tr>
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234: <td bgcolor=#cccccc valign=top width=75%><font size=2>with freeware xntpd.</font></td></tr>
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