HiI am new in Nutanix , would you please explain for me the below stats , and what its performance in VMs performance , the cache stats screen i got it while the backup is running ?

@bas000m I thought I chime in.From the graphics you have in the above, I am guessing you mean “Range cache hit %” as oppose to “Content cache hit rate”. Correct me if I am wrong and I will try to explain about them here.Most people have a “low read” hit rate for range cache as the work load is not predictive enough. So a 5% to 6% value may not be a bad number herecompare to a zero percent which indicates a total unpredictability.But for other hit rates in cache_stats like “vdisk block map” and “extentgroupid” map we want to have high hit ratio say90+% cause if we miss here it results in an on-disk look uo from cassandra (service that cans the cluster data), which is much slower.I don’t go any further than this in here but just wanted to show that there is a difference between each of the hit rates indicated in page 2009 under “cache_stats”So I did some researchand here is what I have found. The ”Content Cache Hit Rate (%) as presented in “Analysis” page in prism is really a combination of what “cache_stats”show in the page 2009 of the cluster. As it is now, it perhaps is not the best measure of assessing performance in cluster as each of the parameters show a specific information and adding them up may not translate well about cluster perfromance overall. That will be changed in the future so people can pick the exact parameter they want among the cache_stats.Hope this shed some more light on your concern.

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解决

NutanixCVM统计

三年前
2019年11月12日
6个回复
2011视图

B级

bas000m
冒险者
4项回复

Nutanix新手, 麻烦你解释下表性能如何VM性能,

图标

最佳回答sbarab2019年11月14日20点39分

视图原创

Hi/p

Nutanix新手, 请你解释下表性能和VM性能如何,

+00++/p

专题结束备注

6个回复

B级

bas000m
写者
冒险者
4项回复
三年前
2019年11月12日

statsi变换

用户四级

HITESH0801
努坦尼斯雇员
104回复
三年前
2019年11月12日

哈罗 @bas000m

下文档可能有助于理解性能度量

https://portal.nutanix.com/#/page/docs/details?targetId=Prism-Central-Guide-Prism-v511:mul-performance-management-pc-c.html

N级

用户级3

角板
轨迹驱动器
30个回复
三年前
2019年11月12日

备份运行时遇到问题或只想理解性能矩阵

备份运行生成更多IOPS正常

B级

bas000m
写者
冒险者
4项回复
三年前
2019年11月12日

备份运行时遇到问题或只想理解性能矩阵

备份运行生成更多IOPS正常

备份运行时遇到问题或只想理解性能矩阵

备份运行生成更多IOPS正常

.......caches点击下降同时备份运行, 也我得到了性能问题 vms备份窗口

CVM存储器需要增加吗?

备份运行时遇到问题或只想理解性能矩阵\u00a0
+00++/p

后援运行生成更多IOPS常态,\u00a0++/p

备份运行时遇到问题或只想理解性能矩阵\u00a0
+00++/p

后援运行生成更多IOPS常态,\u00a0++/p

.......缓存点击下降同时备份运行, 并有性能问题

+00++/p

Do these caches tells that the CVMs memory need to be increased ?<\/p>","quoteUsername":"bas000m","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

B级

bas000m
写者
冒险者
4项回复
三年前
2019年11月12日

备份运行时遇到问题或只想理解性能矩阵

备份运行生成更多IOPS正常

备份运行时遇到问题或只想理解性能矩阵

备份运行生成更多IOPS正常

.......caches点击下降同时备份运行, 也我得到了性能问题 vms备份窗口

CVM存储器需要增加吗?

值缓存率(%)达6%或5%时,它意味着什么?

备份运行时遇到问题或只想理解性能矩阵\u00a0
+00++/p

后援运行生成更多IOPS常态,\u00a0++/p

备份运行时遇到问题或只想理解性能矩阵\u00a0
+00++/p

后援运行生成更多IOPS常态,\u00a0++/p

.......缓存点击下降同时备份运行, 并有性能问题

+00++/p

CVM存储器需要提高?

缓存率值为6%或5%?##/p>

S级

用户级3

sbarab
努坦尼斯雇员
111回复
三年前
2019年11月14日
回答问题

@bas000m 我以为我打入

从上述图形中,我猜你指Range缓存点击%校正我,如果我出错,我在这里会试着解释它们。大多数人都使用低读速率测距缓存,因为工作负载不够预测性5-6%值可能不差数与0比表示完全不可预测性

缓存区块图和扩展群图等其他点击率则高点击率表示 90+

于是我做了点研究发现于此内存缓存速率(%)在棱柱解析页面中显示实为Cache_stats在集群2009页所显示之组合。现在,它可能不是评估集群性能的最佳尺度,因为每个参数显示具体信息并加起来可能无法很好地解释集群全局性能未来会改变,人们可以选择缓存数中想要的精确参数

希望这能为您的关注提供更多线索

/p>

从上述图形中,我猜你指\u201cange缓存攻击+u201d校正我,如果我错了,我会尝试解释一下这里。\00a0qua05%至6%值可能不差数

excentgroid\u201d地图等缓存数据中的其他点击率则表示/u201cextgroup/u201d

所以我做了点研究 u00a0u201c解析u201d页面的缓存速率%未来会修改此功能, 人民可以选择缓存 stats.++/p

+00++/p

Hope this shed some more light on your concern.<\/p>","quoteUsername":"sbarab","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

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