diff options
Diffstat (limited to 'bdb/docs/api_java/memp_stat.html')
-rw-r--r-- | bdb/docs/api_java/memp_stat.html | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/bdb/docs/api_java/memp_stat.html b/bdb/docs/api_java/memp_stat.html deleted file mode 100644 index 1314201a5c0..00000000000 --- a/bdb/docs/api_java/memp_stat.html +++ /dev/null @@ -1,102 +0,0 @@ -<!--$Id: memp_stat.so,v 10.28 2000/05/25 13:47:08 dda Exp $--> -<!--Copyright 1997, 1998, 1999, 2000 by Sleepycat Software, Inc.--> -<!--All rights reserved.--> -<html> -<head> -<title>Berkeley DB: DbEnv.memp_stat</title> -<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> -<meta name="keywords" content="embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,java,C,C++"> -</head> -<body bgcolor=white> - <a name="2"><!--meow--></a> -<table><tr valign=top> -<td> -<h1>DbEnv.memp_stat</h1> -</td> -<td width="1%"> -<a href="../api_java/java_index.html"><img src="../images/api.gif" alt="API"></a><a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a> -</td></tr></table> -<hr size=1 noshade> -<tt> -<h3><pre> -import com.sleepycat.db.*; -<p> -public DbMpoolStat memp_stat() - throws DbException; -<p> -public DbMpoolFStat[] memp_fstat() - throws DbException; -</pre></h3> -<h1>Description</h1> -<p>The DbEnv.memp_stat and <a href="../api_java/memp_stat.html">DbEnv.memp_fstat</a> method create statistical -structures and return to the caller. The statistics include the number -of files participating in the pool, the active pages in the pool, and -information as to how effective the cache has been. -<p>The DbEnv.memp_stat method creates a DbMpoolStat object containing global -statistics. The following data fields are available: -<p><dl compact> -<dt>public long st_gbytes;<dd>Gigabytes of cache (total cache size is st_gbytes + st_bytes) -<dt>public long st_bytes;<dd>Bytes of cache (total cache size is st_gbytes + st_bytes) -<dt>public int st_ncache;<dd>Number of caches. -<dt>public int st_regsize;<dd>Individual cache size. -<dt>public int st_cache_hit;<dd>Requested pages found in the cache. -<dt>public int st_cache_miss;<dd>Requested pages not found in the cache. -<dt>public int st_map;<dd>Requested pages mapped into the process' address space (there is no -available information as to whether or not this request caused disk I/O, -although examining the application page fault rate may be helpful). -<dt>public int st_page_create;<dd>Pages created in the cache. -<dt>public int st_page_in;<dd>Pages read into the cache. -<dt>public int st_page_out;<dd>Pages written from the cache to the backing file. -<dt>public int st_ro_evict;<dd>Clean pages forced from the cache. -<dt>public int st_rw_evict;<dd>Dirty pages forced from the cache. -<dt>public int st_hash_buckets;<dd>Number of hash buckets in buffer hash table. -<dt>public int st_hash_searches;<dd>Total number of buffer hash table lookups. -<dt>public int st_hash_longest;<dd>The longest chain ever encountered in buffer hash table lookups. -<dt>public int st_hash_examined;<dd>Total number of hash elements traversed during hash table lookups. -<dt>public int st_page_clean;<dd>Clean pages currently in the cache. -<dt>public int st_page_dirty;<dd>Dirty pages currently in the cache. -<dt>public int st_page_trickle;<dd>Dirty pages written using the <a href="../api_java/memp_trickle.html">DbEnv.memp_trickle</a> interface. -<dt>public int st_region_wait;<dd>The number of times that a thread of control was forced to wait before -obtaining the region lock. -<dt>public int st_region_nowait;<dd>The number of times that a thread of control was able to obtain -the region lock without waiting. -</dl> -<p>The <a href="../api_java/memp_stat.html">DbEnv.memp_fstat</a> method creates an array of DbMpoolFStat objects -containing statistics for individual files in the pool. Each -DbMpoolFStat object contains statistics for an individual DbMpoolFile. -The following data fields are available for each DbMpoolFStat object: -<p><dl compact> -<dt>public String file_name;<dd>The name of the file. -<dt>public long st_pagesize;<dd>Page size in bytes. -<dt>public int st_cache_hit;<dd>Requested pages found in the cache. -<dt>public int st_cache_miss;<dd>Requested pages not found in the cache. -<dt>public int st_map;<dd>Requested pages mapped into the process' address space. -<dt>public int st_page_create;<dd>Pages created in the cache. -<dt>public int st_page_in;<dd>Pages read into the cache. -<dt>public int st_page_out;<dd>Pages written from the cache to the backing file. -</dl> -<p>The DbEnv.memp_stat method throws an exception that encapsulates a non-zero error value on -failure. -<h1>Errors</h1> -<p>The DbEnv.memp_stat method may fail and throw an exception encapsulating a non-zero error for the following conditions: -<p><dl compact> -<p><dt>EINVAL<dd>An invalid flag value or parameter was specified. -</dl> -<p>The DbEnv.memp_stat method may fail and throw an exception for errors specified for other Berkeley DB and C library or system methods. -If a catastrophic error has occurred, the DbEnv.memp_stat method may fail and throw -a <a href="../api_java/runrec_class.html">DbRunRecoveryException</a>, in which case all subsequent Berkeley DB calls -will fail in the same way. -<h3>Class</h3> -<a href="../api_java/dbenv_class.html">DbEnv</a> -<h1>See Also</h1> -<a href="../api_java/memp_stat.html">DbEnv.memp_fstat</a>, -<a href="../api_java/memp_stat.html">DbEnv.memp_stat</a> -and -<a href="../api_java/memp_trickle.html">DbEnv.memp_trickle</a>. -</tt> -<table><tr><td><br></td><td width="1%"> -<a href="../api_java/java_index.html"><img src="../images/api.gif" alt="API"></a><a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a> -</td></tr></table> -<p><font size=1><a href="http://www.sleepycat.com">Copyright Sleepycat Software</a></font> -</body> -</html> |