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copied!<p>As already mentioned, Java programs can cause this issue. </p> <p>Another solution that does not require code modification is adding the VM argument <code>-XX:+ForceTimeHighResolution</code> (found on the <a href="http://support.ntp.org/bin/view/Support/KnownOsIssues#Section_9.2.3." rel="nofollow noreferrer">NTP support page</a>).</p> <blockquote> <p>9.2.3. Windows and Sun's Java Virtual Machine</p> <p>Sun's Java Virtual Machine needs to be started with the >-XX:+ForceTimeHighResolution parameter to avoid losing interrupts.</p> <p>See <a href="http://www.macromedia.com/support/coldfusion/ts/documents/createuuid_clock_speed.htm" rel="nofollow noreferrer">http://www.macromedia.com/support/coldfusion/ts/documents/createuuid_clock_speed.htm</a> for more information. </p> </blockquote> <p>From the referenced link (via the <a href="https://web.archive.org/web/20041023080803/http://www.macromedia.com/support/coldfusion/ts/documents/createuuid_clock_speed.htm" rel="nofollow noreferrer">Wayback machine</a> - original link is gone):</p> <blockquote> <p>ColdFusion MX: CreateUUID Increases the Windows System Clock Speed</p> <p>Calling the createUUID function multiple times under load in Macromedia ColdFusion MX and higher can cause the Windows system clock to accelerate. This is an issue with the Java Virtual Machine (JVM) in which Thread.sleep calls less than 10 milliseconds (ms) causes the Windows system clock to run faster. This behavior was originally filed as Sun Java Bug 4500388 (developer.java.sun.com/developer/bugParade/bugs/4500388.html) and has been confirmed for the 1.3.x and 1.4.x JVMs.</p> <p>In ColdFusion MX, the createUUID function has an internal Thread.sleep call of 1 millisecond. When createUUID is heavily utilized, the Windows system clock will gain several seconds per minute. The rate of acceleration is proportional to the number of createUUID calls and the load on the ColdFusion MX server. Macromedia has observed this behavior in ColdFusion MX and higher on Windows XP, 2000, and 2003 systems.</p> </blockquote>

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