11.3. リソースの統計
stats コマンドを使用して、Data Grid サーバー内の一部のリソースについて、サーバーが収集した統計を検査できます。
統計を収集するリソース (コンテナー、キャッシュ) のコンテキストから、またはそのようなリソースへのパスを使用して、stats コマンドを使用します。
[//containers/default]> stats
{
"statistics_enabled" : true,
"number_of_entries" : 0,
"hit_ratio" : 0.0,
"read_write_ratio" : 0.0,
"time_since_start" : 0,
"time_since_reset" : 49,
"current_number_of_entries" : 0,
"current_number_of_entries_in_memory" : 0,
"total_number_of_entries" : 0,
"off_heap_memory_used" : 0,
"data_memory_used" : 0,
"stores" : 0,
"retrievals" : 0,
"hits" : 0,
"misses" : 0,
"remove_hits" : 0,
"remove_misses" : 0,
"evictions" : 0,
"average_read_time" : 0,
"average_read_time_nanos" : 0,
"average_write_time" : 0,
"average_write_time_nanos" : 0,
"average_remove_time" : 0,
"average_remove_time_nanos" : 0,
"required_minimum_number_of_nodes" : -1
}
[//containers/default]> stats
{
"statistics_enabled" : true,
"number_of_entries" : 0,
"hit_ratio" : 0.0,
"read_write_ratio" : 0.0,
"time_since_start" : 0,
"time_since_reset" : 49,
"current_number_of_entries" : 0,
"current_number_of_entries_in_memory" : 0,
"total_number_of_entries" : 0,
"off_heap_memory_used" : 0,
"data_memory_used" : 0,
"stores" : 0,
"retrievals" : 0,
"hits" : 0,
"misses" : 0,
"remove_hits" : 0,
"remove_misses" : 0,
"evictions" : 0,
"average_read_time" : 0,
"average_read_time_nanos" : 0,
"average_write_time" : 0,
"average_write_time_nanos" : 0,
"average_remove_time" : 0,
"average_remove_time_nanos" : 0,
"required_minimum_number_of_nodes" : -1
}
[//containers/default]> stats /containers/default/caches/mycache
{
"time_since_start" : -1,
"time_since_reset" : -1,
"current_number_of_entries" : -1,
"current_number_of_entries_in_memory" : -1,
"total_number_of_entries" : -1,
"off_heap_memory_used" : -1,
"data_memory_used" : -1,
"stores" : -1,
"retrievals" : -1,
"hits" : -1,
"misses" : -1,
"remove_hits" : -1,
"remove_misses" : -1,
"evictions" : -1,
"average_read_time" : -1,
"average_read_time_nanos" : -1,
"average_write_time" : -1,
"average_write_time_nanos" : -1,
"average_remove_time" : -1,
"average_remove_time_nanos" : -1,
"required_minimum_number_of_nodes" : -1
}
[//containers/default]> stats /containers/default/caches/mycache
{
"time_since_start" : -1,
"time_since_reset" : -1,
"current_number_of_entries" : -1,
"current_number_of_entries_in_memory" : -1,
"total_number_of_entries" : -1,
"off_heap_memory_used" : -1,
"data_memory_used" : -1,
"stores" : -1,
"retrievals" : -1,
"hits" : -1,
"misses" : -1,
"remove_hits" : -1,
"remove_misses" : -1,
"evictions" : -1,
"average_read_time" : -1,
"average_read_time_nanos" : -1,
"average_write_time" : -1,
"average_write_time_nanos" : -1,
"average_remove_time" : -1,
"average_remove_time_nanos" : -1,
"required_minimum_number_of_nodes" : -1
}