Edit File: CacheStats.html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <!--NewPage--> <HTML> <HEAD> <!-- Generated by javadoc (build 1.5.0) on Thu May 15 17:17:30 EDT 2008 --> <TITLE> CacheStats (Oracle - Berkeley DB Java API) </TITLE> <META NAME="keywords" CONTENT="com.sleepycat.db.CacheStats class"> <LINK REL ="stylesheet" TYPE="text/css" HREF="../../../style.css" TITLE="Style"> <SCRIPT type="text/javascript"> function windowTitle() { parent.document.title="CacheStats (Oracle - Berkeley DB Java API)"; } </SCRIPT> <NOSCRIPT> </NOSCRIPT> </HEAD> <BODY BGCOLOR="white" onload="windowTitle();"> <!-- ========= START OF TOP NAVBAR ======= --> <A NAME="navbar_top"><!-- --></A> <A HREF="#skip-navbar_top" title="Skip navigation links"></A> <TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> <TR> <TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A NAME="navbar_top_firstrow"><!-- --></A> <TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" 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<A HREF="../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR> </TABLE> </TD> <TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM> <b>Berkeley DB</b><br><font size="-1"> version 4.7.25</font></EM> </TD> </TR> <TR> <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../com/sleepycat/db/CacheFileStats.html" title="class in com.sleepycat.db"><B>PREV CLASS</B></A> <A HREF="../../../com/sleepycat/db/CheckpointConfig.html" title="class in com.sleepycat.db"><B>NEXT CLASS</B></A></FONT></TD> <TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../index.html?com/sleepycat/db/CacheStats.html" target="_top"><B>FRAMES</B></A> <A HREF="CacheStats.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--> </SCRIPT> <NOSCRIPT> <A HREF="../../../allclasses-noframe.html"><B>All Classes</B></A> </NOSCRIPT> </FONT></TD> </TR> <TR> <TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | FIELD | CONSTR | <A HREF="#method_summary">METHOD</A></FONT></TD> <TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> DETAIL: FIELD | CONSTR | <A HREF="#method_detail">METHOD</A></FONT></TD> </TR> </TABLE> <A NAME="skip-navbar_top"></A> <!-- ========= END OF TOP NAVBAR ========= --> <HR> <!-- ======== START OF CLASS DATA ======== --> <H2> <FONT SIZE="-1"> com.sleepycat.db</FONT> <BR> Class CacheStats</H2> <PRE> <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">java.lang.Object</A> <IMG SRC="../../../resources/inherit.gif" ALT="extended by "><B>com.sleepycat.db.CacheStats</B> </PRE> <HR> <DL> <DT><PRE>public class <B>CacheStats</B><DT>extends <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></DL> </PRE> <P> Cache statistics for a database environment. <P> <P> <HR> <P> <!-- ========== METHOD SUMMARY =========== --> <A NAME="method_summary"><!-- --></A> <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> <TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"> <B>Method Summary</B></FONT></TH> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getAlloc()">getAlloc</A></B>()</CODE> <BR> Number of page allocations.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getAllocBuckets()">getAllocBuckets</A></B>()</CODE> <BR> Number of hash buckets checked during allocation.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getAllocMaxBuckets()">getAllocMaxBuckets</A></B>()</CODE> <BR> Maximum number of hash buckets checked during an allocation.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getAllocMaxPages()">getAllocMaxPages</A></B>()</CODE> <BR> Maximum number of pages checked during an allocation.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getAllocPages()">getAllocPages</A></B>()</CODE> <BR> Number of pages checked during allocation.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getBytes()">getBytes</A></B>()</CODE> <BR> Bytes of cache (total cache size is st_gbytes + st_bytes).</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getCacheHit()">getCacheHit</A></B>()</CODE> <BR> Requested pages found in the cache.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getCacheMiss()">getCacheMiss</A></B>()</CODE> <BR> Requested pages not found in the cache.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getGbytes()">getGbytes</A></B>()</CODE> <BR> Gigabytes of cache (total cache size is st_gbytes + st_bytes).</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getHashBuckets()">getHashBuckets</A></B>()</CODE> <BR> Number of hash buckets in buffer hash table.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getHashExamined()">getHashExamined</A></B>()</CODE> <BR> Total number of hash elements traversed during hash table lookups.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getHashLongest()">getHashLongest</A></B>()</CODE> <BR> The longest chain ever encountered in buffer hash table lookups.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getHashMaxNowait()">getHashMaxNowait</A></B>()</CODE> <BR> The number of times a thread of control was able to obtain the hash bucket lock without waiting on the bucket which had the maximum number of times that a thread of control needed to wait.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getHashMaxWait()">getHashMaxWait</A></B>()</CODE> <BR> The maximum number of times any hash bucket lock was waited for by a thread of control.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getHashNowait()">getHashNowait</A></B>()</CODE> <BR> The number of times that a thread of control was able to obtain a hash bucket lock without waiting.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getHashSearches()">getHashSearches</A></B>()</CODE> <BR> Total number of buffer hash table lookups.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getHashWait()">getHashWait</A></B>()</CODE> <BR> The number of times that a thread of control was forced to wait before obtaining a hash bucket lock.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getIoWait()">getIoWait</A></B>()</CODE> <BR> Number of operations blocked waiting for I/O to complete.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getMap()">getMap</A></B>()</CODE> <BR> Requested pages mapped into the process' address space (there is no available information about whether or not this request caused disk I/O, although examining the application page fault rate may be helpful).</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getMaxNumCache()">getMaxNumCache</A></B>()</CODE> <BR> Maximum number of caches, as configured with <A HREF="../../../com/sleepycat/db/EnvironmentConfig.html#setCacheMax(long)"><CODE>EnvironmentConfig.setCacheMax(long)</CODE></A>.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getMaxOpenfd()">getMaxOpenfd</A></B>()</CODE> <BR> Maximum number of open file descriptors.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getMaxWrite()">getMaxWrite</A></B>()</CODE> <BR> The maximum number of sequential write operations scheduled by the library when flushing dirty pages from the cache.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getMaxWriteSleep()">getMaxWriteSleep</A></B>()</CODE> <BR> The number of microseconds the thread of control should pause before scheduling further write operations.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getMmapSize()">getMmapSize</A></B>()</CODE> <BR> Maximum file size for mmap.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getMultiversionFreed()">getMultiversionFreed</A></B>()</CODE> <BR> Number of frozen buffers freed.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getMultiversionFrozen()">getMultiversionFrozen</A></B>()</CODE> <BR> Number of buffers frozen.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getMultiversionThawed()">getMultiversionThawed</A></B>()</CODE> <BR> Number of buffers thawed.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getNumCache()">getNumCache</A></B>()</CODE> <BR> Number of caches.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getPageClean()">getPageClean</A></B>()</CODE> <BR> Clean pages currently in the cache.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getPageCreate()">getPageCreate</A></B>()</CODE> <BR> Pages created in the cache.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getPageDirty()">getPageDirty</A></B>()</CODE> <BR> Dirty pages currently in the cache.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getPageIn()">getPageIn</A></B>()</CODE> <BR> Pages read into the cache.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getPageOut()">getPageOut</A></B>()</CODE> <BR> Pages written from the cache to the backing file.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getPages()">getPages</A></B>()</CODE> <BR> Pages in the cache.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getPageTrickle()">getPageTrickle</A></B>()</CODE> <BR> Dirty pages written using <A HREF="../../../com/sleepycat/db/Environment.html#trickleCacheWrite(int)"><CODE>Environment.trickleCacheWrite</CODE></A>.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getRegionNowait()">getRegionNowait</A></B>()</CODE> <BR> The number of times that a thread of control was able to obtain a region lock without waiting.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getRegionWait()">getRegionWait</A></B>()</CODE> <BR> The number of times that a thread of control was forced to wait before obtaining a region lock.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getRegSize()">getRegSize</A></B>()</CODE> <BR> Individual cache size.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getRoEvict()">getRoEvict</A></B>()</CODE> <BR> Clean pages forced from the cache.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> int</CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#getRwEvict()">getRwEvict</A></B>()</CODE> <BR> Dirty pages forced from the cache.</TD> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"> <CODE> <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD> <TD><CODE><B><A HREF="../../../com/sleepycat/db/CacheStats.html#toString()">toString</A></B>()</CODE> <BR> For convenience, the CacheStats class has a toString method that lists all the data fields.</TD> </TR> </TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A> <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> <TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"> <TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></B></TH> </TR> <TR BGCOLOR="white" CLASS="TableRowColor"> <TD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD> </TR> </TABLE> <P> <!-- ============ METHOD DETAIL ========== --> <A NAME="method_detail"><!-- --></A> <TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""> <TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"> <TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"> <B>Method Detail</B></FONT></TH> </TR> </TABLE> <A NAME="getGbytes()"><!-- --></A><H3> getGbytes</H3> <PRE> public int <B>getGbytes</B>()</PRE> <DL> <DD>Gigabytes of cache (total cache size is st_gbytes + st_bytes). <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getBytes()"><!-- --></A><H3> getBytes</H3> <PRE> public int <B>getBytes</B>()</PRE> <DL> <DD>Bytes of cache (total cache size is st_gbytes + st_bytes). <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getNumCache()"><!-- --></A><H3> getNumCache</H3> <PRE> public int <B>getNumCache</B>()</PRE> <DL> <DD>Number of caches. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getMaxNumCache()"><!-- --></A><H3> getMaxNumCache</H3> <PRE> public int <B>getMaxNumCache</B>()</PRE> <DL> <DD>Maximum number of caches, as configured with <A HREF="../../../com/sleepycat/db/EnvironmentConfig.html#setCacheMax(long)"><CODE>EnvironmentConfig.setCacheMax(long)</CODE></A>. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getMmapSize()"><!-- --></A><H3> getMmapSize</H3> <PRE> public int <B>getMmapSize</B>()</PRE> <DL> <DD>Maximum file size for mmap. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getMaxOpenfd()"><!-- --></A><H3> getMaxOpenfd</H3> <PRE> public int <B>getMaxOpenfd</B>()</PRE> <DL> <DD>Maximum number of open file descriptors. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getMaxWrite()"><!-- --></A><H3> getMaxWrite</H3> <PRE> public int <B>getMaxWrite</B>()</PRE> <DL> <DD>The maximum number of sequential write operations scheduled by the library when flushing dirty pages from the cache. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getMaxWriteSleep()"><!-- --></A><H3> getMaxWriteSleep</H3> <PRE> public int <B>getMaxWriteSleep</B>()</PRE> <DL> <DD>The number of microseconds the thread of control should pause before scheduling further write operations. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getPages()"><!-- --></A><H3> getPages</H3> <PRE> public int <B>getPages</B>()</PRE> <DL> <DD>Pages in the cache. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getMap()"><!-- --></A><H3> getMap</H3> <PRE> public int <B>getMap</B>()</PRE> <DL> <DD>Requested pages mapped into the process' address space (there is no available information about whether or not this request caused disk I/O, although examining the application page fault rate may be helpful). <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getCacheHit()"><!-- --></A><H3> getCacheHit</H3> <PRE> public int <B>getCacheHit</B>()</PRE> <DL> <DD>Requested pages found in the cache. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getCacheMiss()"><!-- --></A><H3> getCacheMiss</H3> <PRE> public int <B>getCacheMiss</B>()</PRE> <DL> <DD>Requested pages not found in the cache. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getPageCreate()"><!-- --></A><H3> getPageCreate</H3> <PRE> public int <B>getPageCreate</B>()</PRE> <DL> <DD>Pages created in the cache. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getPageIn()"><!-- --></A><H3> getPageIn</H3> <PRE> public int <B>getPageIn</B>()</PRE> <DL> <DD>Pages read into the cache. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getPageOut()"><!-- --></A><H3> getPageOut</H3> <PRE> public int <B>getPageOut</B>()</PRE> <DL> <DD>Pages written from the cache to the backing file. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getRoEvict()"><!-- --></A><H3> getRoEvict</H3> <PRE> public int <B>getRoEvict</B>()</PRE> <DL> <DD>Clean pages forced from the cache. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getRwEvict()"><!-- --></A><H3> getRwEvict</H3> <PRE> public int <B>getRwEvict</B>()</PRE> <DL> <DD>Dirty pages forced from the cache. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getPageTrickle()"><!-- --></A><H3> getPageTrickle</H3> <PRE> public int <B>getPageTrickle</B>()</PRE> <DL> <DD>Dirty pages written using <A HREF="../../../com/sleepycat/db/Environment.html#trickleCacheWrite(int)"><CODE>Environment.trickleCacheWrite</CODE></A>. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getPageClean()"><!-- --></A><H3> getPageClean</H3> <PRE> public int <B>getPageClean</B>()</PRE> <DL> <DD>Clean pages currently in the cache. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getPageDirty()"><!-- --></A><H3> getPageDirty</H3> <PRE> public int <B>getPageDirty</B>()</PRE> <DL> <DD>Dirty pages currently in the cache. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getHashBuckets()"><!-- --></A><H3> getHashBuckets</H3> <PRE> public int <B>getHashBuckets</B>()</PRE> <DL> <DD>Number of hash buckets in buffer hash table. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getHashSearches()"><!-- --></A><H3> getHashSearches</H3> <PRE> public int <B>getHashSearches</B>()</PRE> <DL> <DD>Total number of buffer hash table lookups. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getHashLongest()"><!-- --></A><H3> getHashLongest</H3> <PRE> public int <B>getHashLongest</B>()</PRE> <DL> <DD>The longest chain ever encountered in buffer hash table lookups. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getHashExamined()"><!-- --></A><H3> getHashExamined</H3> <PRE> public int <B>getHashExamined</B>()</PRE> <DL> <DD>Total number of hash elements traversed during hash table lookups. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getHashNowait()"><!-- --></A><H3> getHashNowait</H3> <PRE> public int <B>getHashNowait</B>()</PRE> <DL> <DD>The number of times that a thread of control was able to obtain a hash bucket lock without waiting. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getHashWait()"><!-- --></A><H3> getHashWait</H3> <PRE> public int <B>getHashWait</B>()</PRE> <DL> <DD>The number of times that a thread of control was forced to wait before obtaining a hash bucket lock. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getHashMaxNowait()"><!-- --></A><H3> getHashMaxNowait</H3> <PRE> public int <B>getHashMaxNowait</B>()</PRE> <DL> <DD>The number of times a thread of control was able to obtain the hash bucket lock without waiting on the bucket which had the maximum number of times that a thread of control needed to wait. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getHashMaxWait()"><!-- --></A><H3> getHashMaxWait</H3> <PRE> public int <B>getHashMaxWait</B>()</PRE> <DL> <DD>The maximum number of times any hash bucket lock was waited for by a thread of control. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getRegionNowait()"><!-- --></A><H3> getRegionNowait</H3> <PRE> public int <B>getRegionNowait</B>()</PRE> <DL> <DD>The number of times that a thread of control was able to obtain a region lock without waiting. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getRegionWait()"><!-- --></A><H3> getRegionWait</H3> <PRE> public int <B>getRegionWait</B>()</PRE> <DL> <DD>The number of times that a thread of control was forced to wait before obtaining a region lock. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getMultiversionFrozen()"><!-- --></A><H3> getMultiversionFrozen</H3> <PRE> public int <B>getMultiversionFrozen</B>()</PRE> <DL> <DD>Number of buffers frozen. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getMultiversionThawed()"><!-- --></A><H3> getMultiversionThawed</H3> <PRE> public int <B>getMultiversionThawed</B>()</PRE> <DL> <DD>Number of buffers thawed. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getMultiversionFreed()"><!-- --></A><H3> getMultiversionFreed</H3> <PRE> public int <B>getMultiversionFreed</B>()</PRE> <DL> <DD>Number of frozen buffers freed. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getAlloc()"><!-- --></A><H3> getAlloc</H3> <PRE> public int <B>getAlloc</B>()</PRE> <DL> <DD>Number of page allocations. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getAllocBuckets()"><!-- --></A><H3> getAllocBuckets</H3> <PRE> public int <B>getAllocBuckets</B>()</PRE> <DL> <DD>Number of hash buckets checked during allocation. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getAllocMaxBuckets()"><!-- --></A><H3> getAllocMaxBuckets</H3> <PRE> public int <B>getAllocMaxBuckets</B>()</PRE> <DL> <DD>Maximum number of hash buckets checked during an allocation. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getAllocPages()"><!-- --></A><H3> getAllocPages</H3> <PRE> public int <B>getAllocPages</B>()</PRE> <DL> <DD>Number of pages checked during allocation. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getAllocMaxPages()"><!-- --></A><H3> getAllocMaxPages</H3> <PRE> public int <B>getAllocMaxPages</B>()</PRE> <DL> <DD>Maximum number of pages checked during an allocation. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getIoWait()"><!-- --></A><H3> getIoWait</H3> <PRE> public int <B>getIoWait</B>()</PRE> <DL> <DD>Number of operations blocked waiting for I/O to complete. <P> <DD><DL> </DL> </DD> </DL> <HR> <A NAME="getRegSize()"><!-- --></A><H3> getRegSize</H3> <PRE> public int <B>getRegSize</B>()</PRE> <DL> <DD>Individual cache size. <P> <DD><DL> </DL> </DD> </DL> 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