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| <h2 title="Interface PersistenceMetrics" class="title">Interface PersistenceMetrics</h2> |
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| <br> |
| <pre>public interface <span class="strong">PersistenceMetrics</span></pre> |
| <div class="block">Persistence metrics used to obtain statistics on persistence. |
| |
| Use <code>IgniteCacheDatabaseSharedManager.persistentStoreMetrics()</code> to obtain persistent metrics.</div> |
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| <h3>Method Summary</h3> |
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| <caption><span>Methods</span><span class="tabEnd"> </span></caption> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
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| <tr class="altColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/PersistenceMetrics.html#getLastCheckpointCopiedOnWritePagesNumber()">getLastCheckpointCopiedOnWritePagesNumber</a></strong>()</code> |
| <div class="block">Gets the number of pages copied to a temporary checkpoint buffer during the last checkpoint.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/PersistenceMetrics.html#getLastCheckpointDataPagesNumber()">getLastCheckpointDataPagesNumber</a></strong>()</code> |
| <div class="block">Gets the number of data pages written during the last checkpoint.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/PersistenceMetrics.html#getLastCheckpointFsyncDuration()">getLastCheckpointFsyncDuration</a></strong>()</code> |
| <div class="block">Gets the duration of the sync phase of the last checkpoint in milliseconds.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/PersistenceMetrics.html#getLastCheckpointingDuration()">getLastCheckpointingDuration</a></strong>()</code> |
| <div class="block">Gets the duration of the last checkpoint in milliseconds.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/PersistenceMetrics.html#getLastCheckpointLockWaitDuration()">getLastCheckpointLockWaitDuration</a></strong>()</code> |
| <div class="block">Gets the duration of last checkpoint lock wait in milliseconds.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/PersistenceMetrics.html#getLastCheckpointMarkDuration()">getLastCheckpointMarkDuration</a></strong>()</code> |
| <div class="block">Gets the duration of last checkpoint mark phase in milliseconds.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/PersistenceMetrics.html#getLastCheckpointPagesWriteDuration()">getLastCheckpointPagesWriteDuration</a></strong>()</code> |
| <div class="block">Gets the duration of last checkpoint pages write phase in milliseconds.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/PersistenceMetrics.html#getLastCheckpointTotalPagesNumber()">getLastCheckpointTotalPagesNumber</a></strong>()</code> |
| <div class="block">Gets the total number of pages written during the last checkpoint.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>int</code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/PersistenceMetrics.html#getWalArchiveSegments()">getWalArchiveSegments</a></strong>()</code> |
| <div class="block">Gets the current number of WAL segments in the WAL archive.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>float</code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/PersistenceMetrics.html#getWalFsyncTimeAverage()">getWalFsyncTimeAverage</a></strong>()</code> |
| <div class="block">Gets the average WAL fsync duration in microseconds over the last time interval.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>float</code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/PersistenceMetrics.html#getWalLoggingRate()">getWalLoggingRate</a></strong>()</code> |
| <div class="block">Gets the average number of WAL records per second written during the last time interval.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>float</code></td> |
| <td class="colLast"><code><strong><a href="../../../org/apache/ignite/PersistenceMetrics.html#getWalWritingRate()">getWalWritingRate</a></strong>()</code> |
| <div class="block">Gets the average number of bytes per second written during the last time interval.</div> |
| </td> |
| </tr> |
| </table> |
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| <h4>getWalLoggingRate</h4> |
| <pre>float getWalLoggingRate()</pre> |
| <div class="block">Gets the average number of WAL records per second written during the last time interval. |
| <p> |
| The length of time interval is configured via <a href="../../../org/apache/ignite/configuration/PersistentStoreConfiguration.html#setRateTimeInterval(long)"><code>PersistentStoreConfiguration.setRateTimeInterval(long)</code></a> |
| configurartion property. |
| The number of subintervals is configured via <a href="../../../org/apache/ignite/configuration/PersistentStoreConfiguration.html#setSubIntervals(int)"><code>PersistentStoreConfiguration.setSubIntervals(int)</code></a> |
| configuration property.</div> |
| </li> |
| </ul> |
| <a name="getWalWritingRate()"> |
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| <h4>getWalWritingRate</h4> |
| <pre>float getWalWritingRate()</pre> |
| <div class="block">Gets the average number of bytes per second written during the last time interval. |
| The length of time interval is configured via <a href="../../../org/apache/ignite/configuration/PersistentStoreConfiguration.html#setRateTimeInterval(long)"><code>PersistentStoreConfiguration.setRateTimeInterval(long)</code></a> |
| configurartion property. |
| The number of subintervals is configured via <a href="../../../org/apache/ignite/configuration/PersistentStoreConfiguration.html#setSubIntervals(int)"><code>PersistentStoreConfiguration.setSubIntervals(int)</code></a> |
| configuration property.</div> |
| </li> |
| </ul> |
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| <h4>getWalArchiveSegments</h4> |
| <pre>int getWalArchiveSegments()</pre> |
| <div class="block">Gets the current number of WAL segments in the WAL archive.</div> |
| </li> |
| </ul> |
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| <h4>getWalFsyncTimeAverage</h4> |
| <pre>float getWalFsyncTimeAverage()</pre> |
| <div class="block">Gets the average WAL fsync duration in microseconds over the last time interval. |
| <p> |
| The length of time interval is configured via <a href="../../../org/apache/ignite/configuration/PersistentStoreConfiguration.html#setRateTimeInterval(long)"><code>PersistentStoreConfiguration.setRateTimeInterval(long)</code></a> |
| configurartion property. |
| The number of subintervals is configured via <a href="../../../org/apache/ignite/configuration/PersistentStoreConfiguration.html#setSubIntervals(int)"><code>PersistentStoreConfiguration.setSubIntervals(int)</code></a> |
| configuration property.</div> |
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| <h4>getLastCheckpointingDuration</h4> |
| <pre>long getLastCheckpointingDuration()</pre> |
| <div class="block">Gets the duration of the last checkpoint in milliseconds.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Total checkpoint duration in milliseconds.</dd></dl> |
| </li> |
| </ul> |
| <a name="getLastCheckpointLockWaitDuration()"> |
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| <h4>getLastCheckpointLockWaitDuration</h4> |
| <pre>long getLastCheckpointLockWaitDuration()</pre> |
| <div class="block">Gets the duration of last checkpoint lock wait in milliseconds.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Checkpoint lock wait time in milliseconds.</dd></dl> |
| </li> |
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| <a name="getLastCheckpointMarkDuration()"> |
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| <h4>getLastCheckpointMarkDuration</h4> |
| <pre>long getLastCheckpointMarkDuration()</pre> |
| <div class="block">Gets the duration of last checkpoint mark phase in milliseconds.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Checkpoint mark duration in milliseconds.</dd></dl> |
| </li> |
| </ul> |
| <a name="getLastCheckpointPagesWriteDuration()"> |
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| <h4>getLastCheckpointPagesWriteDuration</h4> |
| <pre>long getLastCheckpointPagesWriteDuration()</pre> |
| <div class="block">Gets the duration of last checkpoint pages write phase in milliseconds.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Checkpoint pages write phase in milliseconds.</dd></dl> |
| </li> |
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| <h4>getLastCheckpointFsyncDuration</h4> |
| <pre>long getLastCheckpointFsyncDuration()</pre> |
| <div class="block">Gets the duration of the sync phase of the last checkpoint in milliseconds.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Checkpoint fsync time in milliseconds.</dd></dl> |
| </li> |
| </ul> |
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| <pre>long getLastCheckpointTotalPagesNumber()</pre> |
| <div class="block">Gets the total number of pages written during the last checkpoint.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Total number of pages written during the last checkpoint.</dd></dl> |
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| <h4>getLastCheckpointDataPagesNumber</h4> |
| <pre>long getLastCheckpointDataPagesNumber()</pre> |
| <div class="block">Gets the number of data pages written during the last checkpoint.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Total number of data pages written during the last checkpoint.</dd></dl> |
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| <pre>long getLastCheckpointCopiedOnWritePagesNumber()</pre> |
| <div class="block">Gets the number of pages copied to a temporary checkpoint buffer during the last checkpoint.</div> |
| <dl><dt><span class="strong">Returns:</span></dt><dd>Total number of pages copied to a temporary checkpoint buffer during the last checkpoint.</dd></dl> |
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| <p class="legalCopy"><small><table width="100%" border="0" cellspacing=0 cellpadding=0 style="padding: 5px"> <tr> <td> <table style="padding-left: 0; margin: 0"> <tbody style="padding: 0; margin: 0"> <tr style="padding: 0; margin: 0"> <td> <a target=_blank href="https://ignite.apache.org"><nobr>2017 Copyright © Apache Software Foundation</nobr></a> </td> </tr> </tbody> </table> </td> <td width="100%" align="right" valign="center"> <a href="https://twitter.com/ApacheIgnite" class="twitter-follow-button" data-show-count="false" data-size="large">Follow @ApacheIgnite</a> </td> </tr> <tr> <td colspan="2" valign="top" align="left"> <table style="padding-left: 0; margin: 0"> <tbody style="padding: 0; margin: 0"> <tr style="padding: 0; margin: 0"> <td> <b>Ignite Fabric</b> </td> <td>: ver. <strong>2.1.0</strong> </td> </tr> <tr style="padding: 0; margin: 0"> <td> <b>Release Date</b> </td> <td>: July 20 2017 </td> </tr> </tbody> </table> </td> </tr> </table></small></p> |
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