11.3. 资源统计
您可以使用 stats 命令检查 Data Grid 服务器中的某些资源的 server-collected 统计信息。
从收集统计信息(容器、缓存)的资源上下文中使用 stats 命令,或使用指向此类资源的路径:
[//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
}