Linux pageinfo 度量集
编辑Linux pageinfo 度量集
编辑此功能处于测试阶段，可能随时更改。其设计和代码不如正式 GA 功能成熟，按原样提供，不提供任何担保。测试版功能不受正式 GA 功能的支持服务级别协议 (SLA) 的约束。
pageinfo 度量集报告在 /proc/pagetypeinfo 中找到的分页统计信息。
报告的指标按页面类型细分：DMA、DMA32、Normal 和 Highmem。这些类型进一步按阶细分，阶表示 2^ORDER*PAGE_SIZE 的区域。这些指标分为两种报告类型：buddyinfo，按页面类型汇总，如 /proc/buddyinfo 中所示；nodes 报告按内存迁移类型细分的详细信息。
此信息可用于确定内存碎片。内核 伙伴算法 将始终搜索最小的页面阶来分配，如果找不到，则将较大的页面阶拆分为两个“伙伴”。释放内存时，内核将尝试合并“伙伴”。如果仅在较低阶可用页面，则表示碎片，因为伙伴页面无法合并。
请注意，来自 /proc/pagetypeinfo 的页面计数仅显示最多 100,000 的值。
这是一个默认度量集。如果主机模块未配置，则默认启用此度量集。
有关度量集每个字段的说明，请参见导出的字段 部分。
以下是此度量集生成的示例文档
{
"@timestamp": "2017-10-12T08:05:34.853Z",
"event": {
"dataset": "linux.pageinfo",
"duration": 115000,
"module": "linux"
},
"linux": {
"pageinfo": {
"buddy_info": {
"DMA": {
"0": 1,
"1": 0,
"10": 3,
"2": 1,
"3": 0,
"4": 2,
"5": 1,
"6": 1,
"7": 0,
"8": 1,
"9": 1
},
"DMA32": {
"0": 3,
"1": 4,
"10": 745,
"2": 1,
"3": 2,
"4": 2,
"5": 2,
"6": 2,
"7": 2,
"8": 2,
"9": 3
},
"Normal": {
"0": 3409,
"1": 4916,
"10": 292,
"2": 4010,
"3": 4853,
"4": 3613,
"5": 2472,
"6": 793,
"7": 552,
"8": 189,
"9": 148
}
},
"nodes": {
"0": {
"DMA": {
"CMA": {
"0": 0,
"1": 0,
"10": 0,
"2": 0,
"3": 0,
"4": 0,
"5": 0,
"6": 0,
"7": 0,
"8": 0,
"9": 0
},
"HighAtomic": {
"0": 0,
"1": 0,
"10": 0,
"2": 0,
"3": 0,
"4": 0,
"5": 0,
"6": 0,
"7": 0,
"8": 0,
"9": 0
},
"Isolate": {
"0": 0,
"1": 0,
"10": 0,
"2": 0,
"3": 0,
"4": 0,
"5": 0,
"6": 0,
"7": 0,
"8": 0,
"9": 0
},
"Movable": {
"0": 0,
"1": 0,
"10": 3,
"2": 0,
"3": 0,
"4": 0,
"5": 0,
"6": 0,
"7": 0,
"8": 0,
"9": 1
},
"Reclaimable": {
"0": 0,
"1": 0,
"10": 0,
"2": 0,
"3": 0,
"4": 0,
"5": 0,
"6": 0,
"7": 0,
"8": 0,
"9": 0
},
"Unmovable": {
"0": 1,
"1": 0,
"10": 0,
"2": 1,
"3": 0,
"4": 2,
"5": 1,
"6": 1,
"7": 0,
"8": 1,
"9": 0
}
},
"DMA32": {
"CMA": {
"0": 0,
"1": 0,
"10": 0,
"2": 0,
"3": 0,
"4": 0,
"5": 0,
"6": 0,
"7": 0,
"8": 0,
"9": 0
},
"HighAtomic": {
"0": 0,
"1": 0,
"10": 0,
"2": 0,
"3": 0,
"4": 0,
"5": 0,
"6": 0,
"7": 0,
"8": 0,
"9": 0
},
"Isolate": {
"0": 0,
"1": 0,
"10": 0,
"2": 0,
"3": 0,
"4": 0,
"5": 0,
"6": 0,
"7": 0,
"8": 0,
"9": 0
},
"Movable": {
"0": 3,
"1": 3,
"10": 745,
"2": 1,
"3": 2,
"4": 2,
"5": 2,
"6": 2,
"7": 1,
"8": 1,
"9": 2
},
"Reclaimable": {
"0": 0,
"1": 0,
"10": 0,
"2": 0,
"3": 0,
"4": 0,
"5": 0,
"6": 0,
"7": 0,
"8": 0,
"9": 0
},
"Unmovable": {
"0": 0,
"1": 1,
"10": 0,
"2": 0,
"3": 0,
"4": 0,
"5": 0,
"6": 0,
"7": 1,
"8": 1,
"9": 1
}
},
"Normal": {
"CMA": {
"0": 0,
"1": 0,
"10": 0,
"2": 0,
"3": 0,
"4": 0,
"5": 0,
"6": 0,
"7": 0,
"8": 0,
"9": 0
},
"HighAtomic": {
"0": 0,
"1": 0,
"10": 0,
"2": 0,
"3": 0,
"4": 0,
"5": 0,
"6": 0,
"7": 0,
"8": 0,
"9": 0
},
"Isolate": {
"0": 0,
"1": 0,
"10": 0,
"2": 0,
"3": 0,
"4": 0,
"5": 0,
"6": 0,
"7": 0,
"8": 0,
"9": 0
},
"Movable": {
"0": 3137,
"1": 4732,
"10": 291,
"2": 3687,
"3": 2993,
"4": 2337,
"5": 1504,
"6": 355,
"7": 404,
"8": 155,
"9": 141
},
"Reclaimable": {
"0": 0,
"1": 0,
"10": 0,
"2": 1,
"3": 3,
"4": 227,
"5": 534,
"6": 305,
"7": 124,
"8": 31,
"9": 5
},
"Unmovable": {
"0": 272,
"1": 184,
"10": 1,
"2": 322,
"3": 1857,
"4": 1049,
"5": 434,
"6": 133,
"7": 24,
"8": 3,
"9": 2
}
},
"order_summary": {
"0": 3413,
"1": 4920,
"10": 1040,
"2": 4012,
"3": 4855,
"4": 3617,
"5": 2475,
"6": 796,
"7": 554,
"8": 192,
"9": 152
}
}
}
}
},
"metricset": {
"name": "pageinfo",
"period": 10000
},
"service": {
"type": "linux"
}
}