/*
* __wt_cache_stats_update --
* Update the cache statistics for return to the application.
*/
void
__wt_cache_stats_update(WT_SESSION_IMPL *session)
{
WT_CACHE *cache;
WT_CONNECTION_IMPL *conn;
WT_CONNECTION_STATS **stats;
uint64_t inuse, leaf;
conn = S2C(session);
cache = conn->cache;
stats = conn->stats;
inuse = __wt_cache_bytes_inuse(cache);
/*
* There are races updating the different cache tracking values so
* be paranoid calculating the leaf byte usage.
*/
leaf = inuse > cache->bytes_internal ?
inuse - cache->bytes_internal : 0;
WT_STAT_SET(session, stats, cache_bytes_max, conn->cache_size);
WT_STAT_SET(session, stats, cache_bytes_inuse, inuse);
WT_STAT_SET(session, stats, cache_overhead, cache->overhead_pct);
WT_STAT_SET(
session, stats, cache_bytes_dirty, __wt_cache_dirty_inuse(cache));
WT_STAT_SET(
session, stats, cache_bytes_image, __wt_cache_bytes_image(cache));
WT_STAT_SET(
session, stats, cache_pages_inuse, __wt_cache_pages_inuse(cache));
WT_STAT_SET(
session, stats, cache_bytes_internal, cache->bytes_internal);
WT_STAT_SET(session, stats, cache_bytes_leaf, leaf);
WT_STAT_SET(
session, stats, cache_bytes_other, __wt_cache_bytes_other(cache));
WT_STAT_SET(session, stats,
cache_eviction_maximum_page_size, cache->evict_max_page_size);
WT_STAT_SET(session, stats, cache_pages_dirty,
cache->pages_dirty_intl + cache->pages_dirty_leaf);
/*
* The number of files with active walks ~= number of hazard pointers
* in the walk session. Note: reading without locking.
*/
if (conn->evict_server_running)
WT_STAT_SET(session, stats, cache_eviction_walks_active,
cache->walk_session->nhazard);
}
/*
* __wt_cache_stats_update --
* Update the cache statistics for return to the application.
*/
void
__wt_cache_stats_update(WT_SESSION_IMPL *session)
{
WT_CACHE *cache;
WT_CONNECTION_IMPL *conn;
WT_CONNECTION_STATS *stats;
conn = S2C(session);
cache = conn->cache;
stats = &conn->stats;
WT_STAT_SET(stats, cache_bytes_max, conn->cache_size);
WT_STAT_SET(stats, cache_bytes_inuse, __wt_cache_bytes_inuse(cache));
WT_STAT_SET(stats, cache_overhead, cache->overhead_pct);
WT_STAT_SET(stats, cache_pages_inuse, __wt_cache_pages_inuse(cache));
WT_STAT_SET(stats, cache_bytes_dirty, __wt_cache_dirty_inuse(cache));
WT_STAT_SET(stats,
cache_eviction_maximum_page_size, cache->evict_max_page_size);
WT_STAT_SET(stats, cache_pages_dirty, cache->pages_dirty);
}
/*
* __wt_cache_stats_update --
* Update the cache statistics for return to the application.
*/
void
__wt_cache_stats_update(WT_SESSION_IMPL *session)
{
WT_CACHE *cache;
WT_CONNECTION_IMPL *conn;
WT_CONNECTION_STATS **stats;
uint64_t inuse, leaf, used;
conn = S2C(session);
cache = conn->cache;
stats = conn->stats;
inuse = __wt_cache_bytes_inuse(cache);
/*
* There are races updating the different cache tracking values so
* be paranoid calculating the leaf byte usage.
*/
used = cache->bytes_overflow + cache->bytes_internal;
leaf = inuse > used ? inuse - used : 0;
WT_STAT_SET(session, stats, cache_bytes_max, conn->cache_size);
WT_STAT_SET(session, stats, cache_bytes_inuse, inuse);
WT_STAT_SET(session, stats, cache_overhead, cache->overhead_pct);
WT_STAT_SET(
session, stats, cache_pages_inuse, __wt_cache_pages_inuse(cache));
WT_STAT_SET(
session, stats, cache_bytes_dirty, __wt_cache_dirty_inuse(cache));
WT_STAT_SET(session, stats,
cache_eviction_maximum_page_size, cache->evict_max_page_size);
WT_STAT_SET(session, stats, cache_pages_dirty, cache->pages_dirty);
WT_STAT_SET(
session, stats, cache_bytes_internal, cache->bytes_internal);
WT_STAT_SET(
session, stats, cache_bytes_overflow, cache->bytes_overflow);
WT_STAT_SET(session, stats, cache_bytes_leaf, leaf);
}
/*根据cache的状态更新cache的统计信息*/
void __wt_cache_stats_update(WT_SESSION_IMPL *session)
{
WT_CACHE *cache;
WT_CONNECTION_IMPL *conn;
WT_CONNECTION_STATS *stats;
conn = S2C(session);
cache = conn->cache;
stats = &conn->stats;
WT_STAT_SET(stats, cache_bytes_max, conn->cache_size);
WT_STAT_SET(stats, cache_bytes_inuse, __wt_cache_bytes_inuse(cache));
WT_STAT_SET(stats, cache_overhead, cache->overhead_pct);
WT_STAT_SET(stats, cache_pages_inuse, __wt_cache_pages_inuse(cache));
WT_STAT_SET(stats, cache_bytes_dirty, __wt_cache_dirty_inuse(cache));
WT_STAT_SET(stats, cache_eviction_maximum_page_size, cache->evict_max_page_size);
WT_STAT_SET(stats, cache_pages_dirty, cache->pages_dirty);
/* Figure out internal, leaf and overflow stats */
WT_STAT_SET(stats, cache_bytes_internal, cache->bytes_internal);
WT_STAT_SET(stats, cache_bytes_leaf, conn->cache_size - (cache->bytes_internal + cache->bytes_overflow));
WT_STAT_SET(stats, cache_bytes_overflow, cache->bytes_overflow);
}