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