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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2009, 2015 Oracle and/or its affiliates. All rights reserved.
*
*/
using System;
using System.Collections.Generic;
using System.Text;
namespace BerkeleyDB {
/// <summary>
/// Statistical information about the memory pool subsystem
/// </summary>
public class MPoolStats {
private Internal.MPoolStatStruct st;
private CacheInfo ci;
private List<MPoolFileStats> mempfiles;
internal MPoolStats(Internal.MempStatStruct stats) {
st = stats.st;
ci = new CacheInfo(st.st_gbytes, st.st_bytes, (int)st.st_max_ncache);
mempfiles = new List<MPoolFileStats>();
foreach (Internal.MPoolFileStatStruct file in stats.files)
mempfiles.Add(new MPoolFileStats(file));
}
/// <summary>
/// Total cache size and number of regions
/// </summary>
public CacheInfo CacheSettings { get { return ci; } }
/// <summary>
/// Maximum number of regions.
/// </summary>
public uint CacheRegions { get { return st.st_ncache; } }
/// <summary>
/// Maximum file size for mmap.
/// </summary>
public ulong MaxMMapSize { get { return (ulong)st.st_mmapsize.ToInt64(); } }
/// <summary>
/// Maximum number of open file descriptors.
/// </summary>
public int MaxOpenFileDescriptors { get { return st.st_maxopenfd; } }
/// <summary>
/// Maximum buffers to write.
/// </summary>
public int MaxBufferWrites { get { return st.st_maxwrite; } }
/// <summary>
/// Sleep after writing max buffers.
/// </summary>
public uint MaxBufferWritesSleep { get { return st.st_maxwrite_sleep; } }
/// <summary>
/// Total number of pages.
/// </summary>
public uint Pages { get { return st.st_pages; } }
/// <summary>
/// Pages from mapped files.
/// </summary>
public uint MappedPages { get { return st.st_map; } }
/// <summary>
/// Pages found in the cache.
/// </summary>
public ulong PagesInCache { get { return st.st_cache_hit; } }
/// <summary>
/// Pages not found in the cache.
/// </summary>
public ulong PagesNotInCache { get { return st.st_cache_miss; } }
/// <summary>
/// Pages created in the cache.
/// </summary>
public ulong PagesCreatedInCache { get { return st.st_page_create; } }
/// <summary>
/// Pages read in.
/// </summary>
public ulong PagesRead { get { return st.st_page_in; } }
/// <summary>
/// Pages written out.
/// </summary>
public ulong PagesWritten { get { return st.st_page_out; } }
/// <summary>
/// Clean pages forced from the cache.
/// </summary>
public ulong CleanPagesEvicted { get { return st.st_ro_evict; } }
/// <summary>
/// Dirty pages forced from the cache.
/// </summary>
public ulong DirtyPagesEvicted { get { return st.st_rw_evict; } }
/// <summary>
/// Pages written by memp_trickle.
/// </summary>
public ulong PagesTrickled { get { return st.st_page_trickle; } }
/// <summary>
/// Clean pages.
/// </summary>
public uint CleanPages { get { return st.st_page_clean; } }
/// <summary>
/// Dirty pages.
/// </summary>
public uint DirtyPages { get { return st.st_page_dirty; } }
/// <summary>
/// Number of hash buckets.
/// </summary>
public uint HashBuckets { get { return st.st_hash_buckets; } }
/// <summary>
/// Number of hash bucket mutexes.
/// </summary>
public uint HashBucketMutexes { get { return st.st_hash_mutexes; } }
/// <summary>
/// Assumed page size.
/// </summary>
public uint PageSize { get { return st.st_pagesize; } }
/// <summary>
/// Total hash chain searches.
/// </summary>
public uint HashChainSearches { get { return st.st_hash_searches; } }
/// <summary>
/// Longest hash chain searched.
/// </summary>
public uint LongestHashChainSearch { get { return st.st_hash_longest; } }
/// <summary>
/// Total hash entries searched.
/// </summary>
public ulong HashEntriesSearched { get { return st.st_hash_examined; } }
/// <summary>
/// Hash lock granted with nowait.
/// </summary>
public ulong HashLockNoWait { get { return st.st_hash_nowait; } }
/// <summary>
/// Hash lock granted after wait.
/// </summary>
public ulong HashLockWait { get { return st.st_hash_wait; } }
/// <summary>
/// Max hash lock granted with nowait.
/// </summary>
public ulong MaxHashLockNoWait { get { return st.st_hash_max_nowait; } }
/// <summary>
/// Max hash lock granted after wait.
/// </summary>
public ulong MaxHashLockWait { get { return st.st_hash_max_wait; } }
/// <summary>
/// Region lock granted with nowait.
/// </summary>
public ulong RegionLockNoWait { get { return st.st_region_nowait; } }
/// <summary>
/// Region lock granted after wait.
/// </summary>
public ulong RegionLockWait { get { return st.st_region_wait; } }
/// <summary>
/// Buffers frozen.
/// </summary>
public ulong FrozenBuffers { get { return st.st_mvcc_frozen; } }
/// <summary>
/// Buffers thawed.
/// </summary>
public ulong ThawedBuffers { get { return st.st_mvcc_thawed; } }
/// <summary>
/// Frozen buffers freed.
/// </summary>
public ulong FrozenBuffersFreed { get { return st.st_mvcc_freed; } }
/// <summary>
/// Outdated invisible buffers reused.
/// </summary>
public ulong OutdatedInvisibleBuffersReused { get { return st.st_mvcc_reused; } }
/// <summary>
/// Number of page allocations.
/// </summary>
public ulong PageAllocations { get { return st.st_alloc; } }
/// <summary>
/// Buckets checked during allocation.
/// </summary>
public ulong BucketsCheckedDuringAlloc { get { return st.st_alloc_buckets; } }
/// <summary>
/// Max buckets checked during allocation.
/// </summary>
public ulong MaxBucketsCheckedDuringAlloc { get { return st.st_alloc_max_buckets; } }
/// <summary>
/// Pages checked during allocation.
/// </summary>
public ulong PagesCheckedDuringAlloc { get { return st.st_alloc_pages; } }
/// <summary>
/// Max pages checked during allocation.
/// </summary>
public ulong MaxPagesCheckedDuringAlloc { get { return st.st_alloc_max_pages; } }
/// <summary>
/// Thread waited on buffer I/O.
/// </summary>
public ulong BlockedOperations { get { return st.st_io_wait; } }
/// <summary>
/// Number of times sync interrupted.
/// </summary>
public ulong SyncInterrupted { get { return st.st_sync_interrupted; } }
/// <summary>
/// Odd file size detected.
/// </summary>
public uint OddFileSizeDetected { get { return st.st_oddfsize_detect; } }
/// <summary>
/// Odd file size resolved.
/// </summary>
public uint OddFileSizeResolve { get { return st.st_oddfsize_resolve; } }
/// <summary>
/// Region size.
/// </summary>
public ulong RegionSize { get { return (ulong)st.st_regsize.ToInt64(); } }
/// <summary>
/// Individual cache max.
/// </summary>
public ulong RegionMax { get { return (ulong)st.st_regmax.ToInt64(); } }
/// <summary>
/// Stats for files open in the memory pool
/// </summary>
public List<MPoolFileStats> Files { get { return mempfiles; } }
}
}
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