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Nutanix CVM - diskspd

  • 2021年2月3
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J

我是Nutanix的新手，我们在网上有一个Nutanix集群。出于测试目的，我在虚拟机中运行diskspd测试。
我运行一些diskspd测试与相同的虚拟机配置在几个环境3层Hyper-V/ VMware和HCI Nutanix AHV。

为什么在Nutanix中运行带有-Sh标志(没有软件/硬件缓存)的测试结果比其他平台低10倍?没有-Sh标志，Nutanix运行测试的结果比我的其他测试平台更高。是因为CVM的设计工作方式吗?我只是想理解。

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最佳答案Alona2021年2月4日05:31

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I\u2019m new to Nutanix and we have a Nutanix cluster online. For testing purposes I\u2019m running diskspd test in a VM.
I\u2019m running some diskspd test with identical VM configs in several enviroments 3-tier Hyper-V\/ VMware and HCI Nutanix AHV.<\/p>

Why is it that running a test with -Sh flag (no software\/hardware cache) gives almost 10 times lower results in Nutanix compared to other platforms? Without -Sh flag Nutanix is running test with higher results compared to my other testing platforms. Is it because of how CVM is designed to work? I\u2019m just trying to understand.<\/p>","quoteUsername":"JukkaFIN","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

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3回复

Alona
排名
Userlevel 6
徽章 ＋5

嗨JukkaFIN,

开发Diskpd是为了测试物理存储，这一点需要记住。经过KB-9653[性能]使用Microsoft Diskspd对存储进行基准测试．看看这能不能让事情更清楚。如果你还有问题，请告诉我。

J

谢谢你！

当在Nutanix AHV和传统的3层Hyper-V虚拟机上使用卷组并将测试扩展到几个虚拟磁盘时，我能够获得类似的diskspd结果。虽然当使用多个SAN存储lun并在这些lun上扩展虚拟磁盘时，我能够使用SAN存储实现更好的结果。

问题:
当使用Nutanix AHV时，一个虚拟磁盘被限制为一个物理磁盘的性能，当使用具有多个vdisk的卷组时，负载被均衡到多个星门和物理磁盘?

Thank you,<\/p>

I was able to get similar diskspd results when using volume group on Nutanix AHV and legacy 3-tier Hyper-V virtual machine with test spread to several virtual disks. Altough when using several SAN storage luns and spreading virtual disks on those, I was able to achieve better results with SAN storage.\u00a0<\/p>

Question:
When using Nutanix AHV one virtual disk is limited to performance of one physical disk and when using volume group withs several vdisks load is balanced to several stargates and physical disks?<\/p>","quoteUsername":"JukkaFIN","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

Alona
排名
Userlevel 6
徽章 ＋5

嗨JukkaFIN,

你问题的答案不是真的。虚拟层和物理层不直接(或容易映射)在一起。根据多个星门进程之间的平衡，数据局部性原则确保数据由本地节点提供，这也意味着相同的星门进程。

Hi JukkaFIN,<\/p>

The answer to your question is not really. Virtual and physical layers are not directly (or easily mapped) together. As per balancing between several stargate processes, data locality principles ensures that the data is served from the local node and that would also mean by the same stargate process.<\/p>

\u00a0<\/p>","quoteUsername":"Alona","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

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