The 2022 IT Salary & Skills Survey is now open, and you can participate!<\/strong> <\/span><\/p>

This survey is one of the largest studies of IT salary, skills, and certifications. It\u2019s the backbone of Skillsoft\u2019s annual IT Skills and Salary Report, which shares detailed insights on skills and certifications, compensation, skills gaps and challenges, and more for IT professionals at every stage of their career.<\/span><\/p>

The survey typically takes 10-15 minutes to complete. You can bookmark your progress and pick up where you left off within one week of starting the survey. It\u2019s also completely anonymous. Skillsoft doesn\u2019t sell the data or share it with others.\u00a0<\/p>

Participating in the survey is a great way to share how Nutanix certification and training has impacted your career. <\/span>Plus, anyone who completes the survey can enter to win a $100 gift card! <\/em><\/p>

Take the survey today!<\/strong><\/a><\/h3>

\u00a0<\/p>

This article was written by Karlie Beil, Customer Marketing Specialist.\u00a0<\/p><\/div><\/div><\/div><\/div><\/div><\/section>

\u00a0<\/p>

\u00a9\ufe0f\ufe0f\ufe0f\ufe0f\ufe0f\ufe0f 2022 Nutanix, Inc. \u00a0All rights reserved. Nutanix, the Nutanix logo and all Nutanix product, feature and service names mentioned herein are registered trademarks or trademarks of Nutanix, Inc. in the United States and other countries. Other brand names mentioned herein are for identification purposes only and may be the trademarks of their respective holder(s). This post may contain links to external websites that are not part of Nutanix.com. Nutanix does not control these sites and disclaims all responsibility for the content or accuracy of any external site. Our decision to link to an external site should not be considered an endorsement of any content on such a site. This post may contain express and implied forward-looking statements, which are not historical facts and are instead based on our current expectations, estimates and beliefs. The accuracy of such statements involves risks and uncertainties and depends upon future events, including those that may be beyond our control, and actual results may differ materially and adversely from those anticipated or implied by such statements. Any forward-looking statements included herein speak only as of the date hereof and, except as required by law, we assume no obligation to update or otherwise revise any of such forward-looking statements to reflect subsequent events or circumstances.<\/p>","id":40862,"featuredImage":"https:\/\/uploads-us-west-2.insided.com\/nutanix-us\/attachment\/1b5db37d-c54b-4002-8bee-065c799897b2_thumb.png","label":"Blog","replyCount":0,"views":170,"post":{"id":61075,"author":{"id":113632,"url":"\/members\/karlie-beil-113632","name":"Karlie Beil","avatar":"https:\/\/uploads-us-west-2.insided.com\/nutanix-us\/icon\/200x200\/1581aab3-bcf6-49f4-b2fb-3d11e8c010dc.png","userTitle":"Community Manager","rank":{"isBold":false,"isItalic":false,"isUnderline":false,"name":"Community Manager","color":"#0873ba"},"userLevel":2},"content":"

The 2022 IT Salary & Skills Survey is now open, and you can participate!<\/strong> <\/span><\/p>

This survey is one of the largest studies of IT salary, skills, and certifications. It\u2019s the backbone of Skillsoft\u2019s annual IT Skills and Salary Report, which shares detailed insights on skills and certifications, compensation, skills gaps and challenges, and more for IT professionals at every stage of their career.<\/span><\/p>

The survey typically takes 10-15 minutes to complete. You can bookmark your progress and pick up where you left off within one week of starting the survey. It\u2019s also completely anonymous. Skillsoft doesn\u2019t sell the data or share it with others.\u00a0<\/p>

Participating in the survey is a great way to share how Nutanix certification and training has impacted your career. <\/span>Plus, anyone who completes the survey can enter to win a $100 gift card! <\/em><\/p>

Take the survey today!<\/strong><\/a><\/h3>

\u00a0<\/p>

This article was written by Karlie Beil, Customer Marketing Specialist.\u00a0<\/p><\/div><\/div><\/div><\/div><\/div><\/section>

\u00a0<\/p>

\u00a9\ufe0f\ufe0f\ufe0f\ufe0f\ufe0f\ufe0f 2022 Nutanix, Inc. \u00a0All rights reserved. Nutanix, the Nutanix logo and all Nutanix product, feature and service names mentioned herein are registered trademarks or trademarks of Nutanix, Inc. in the United States and other countries. Other brand names mentioned herein are for identification purposes only and may be the trademarks of their respective holder(s). This post may contain links to external websites that are not part of Nutanix.com. Nutanix does not control these sites and disclaims all responsibility for the content or accuracy of any external site. Our decision to link to an external site should not be considered an endorsement of any content on such a site. This post may contain express and implied forward-looking statements, which are not historical facts and are instead based on our current expectations, estimates and beliefs. The accuracy of such statements involves risks and uncertainties and depends upon future events, including those that may be beyond our control, and actual results may differ materially and adversely from those anticipated or implied by such statements. Any forward-looking statements included herein speak only as of the date hereof and, except as required by law, we assume no obligation to update or otherwise revise any of such forward-looking statements to reflect subsequent events or circumstances.<\/p>","url":"\/education-blog-153\/add-your-voice-to-the-it-skills-and-salary-survey-40862?postid=61075#post61075","creationDate":"2022-05-12T20:00:15+0000","relativeCreationDate":"1 month ago"},"contentType":"article","type":3,"likes":0,"hasCurrentUserLiked":false},"phrases":{"Forum":{"{n} year|{n} years":"{n} year|{n} years","{n} month|{n} months":"{n} month|{n} months","{n} day|{n} days":"{n} day|{n} days","{n} hour|{n} hours":"{n} hour|{n} hours","{n} minute|{n} minutes":"{n} minute|{n} minutes","just":"just now","{plural} ago":"{plural} ago"}}}">

VCPU与内核数（UVM，NUMA和CVM）的数量

  • 2020年7月15日
  • 1回复
  • 6325意见
阿罗纳
秩
UserLevel 6
徽章 +5

您是否仍然想知道配置VM时要使用哪个VCPU数量或每个插座数量？您阅读了一些有关它的知识，这很有意义，您认为您现在只记得在某个时候就偶然发现了同样的困境。我们可以一劳永逸吗？

VCPU和核心本质上绑定到NUMA节点，本质上，该节点是具有直接连接内存的处理器。在某些（但不是全部）条件下，跨NUMA边界访问内存或设备将导致性能下降。因此，目标是配置具有CPU的VM和保留在单个NUMA节点边界内的内存值。例外将是一个数字感知的应用程序。

要记住的另一件事是，在AHV上不支持核心数量的热量添加，这意味着调整VM的内核值数量需要VM为电源。

为了确保群集中VM的最佳性能遵循简单的规则：

  • 使用VCPU而不是核心增加可用VM的VCPU数量。不支持CPU内核的热添加。
  • 仅使用与VM所需的VCPU一样多的VCPU来限制资源浪费。如果应用程序性能不受影响，则可以从AHV资源调度和用法角度使用两个VCPU在50％使用情况下运行，而不是在每个利用率为25％的情况下运行两个VCPU。两个VCPU比四个更容易安排。
  • 使用物理核心计数，而不是超线程计数，以进行最大的单个VM尺寸。与AHV主机上可用的PCPU内核配置具有更多VCPU内核的单个VM。这种配置可能会给VM带来重大的性能问题。

出于Nutanix簇的相同性能原因，应防止控制器VM（CVM）出于性能原因访问远程NUMA内存。这就是为什么应将CVM固定在给定的NUMA节点上的原因。安装Nutanix软件时，Foundation Service决定在NUMA节点上托管CVM。

要验证AHV群集上NUMA节点的大小。AHV最佳实践：记忆。

确认CVM固定在NUMA节点KB-8715 [性能]基于CVM的NUMA设置可能无法固定CVM来校正基于VMware ESXI的系统上的CPU插座

AHV最佳实践：CPU配置

Do you still wonder which one to use Number of vCPU or Number of Cores per Socket when configuring a VM? You read something about it and it makes sense and you think you will now remember only to stumble upon the same dilemma sometime later. Shall we clear this once and for all?<\/p>

\u00a0<\/p>

vCPU and cores are inherently bound to a NUMA node which, in essence, is as a processor with direct attached memory. Under some (but not all) conditions, accessing memory or devices across NUMA boundaries will result in decreased performance. Hence the goal is to configure a VM with CPU and memory values that remain within the boundaries of a single NUMA node. The exception would be a NUMA-aware application.<\/p>

Another thing to remember is that hot add of the number of cores is not supported on AHV meaning adjustment of number of cores value for a VM requires the VM to be a powered off.<\/p>

\u00a0<\/p>

To ensure optimal performance of the VMs in the cluster follow simple rules:<\/p>

该主题已关闭以供评论

1回复

乔恩
秩
UserLevel 6
徽章 +29

堆积在这个线程上，我最近在Reddit上提出了相对较晚的问题，这里：https://www.reddit.com/r/nutanix/comments/nvviq1/ahv_vcpu_best_best_practice_2021_when_to_to_configure/h21uj35?utm_source=share＆utm_medium = wweb2x x

在我的列表中复制我的一些关键“通用”，随时将其作为公司级别的佳能，我现在将其放在石头上：

  1. 给您的应用程序他们需要的东西，仅此而已

  2. 如果随着时间的推移发生变化，请根据观察到的利用率和您的性能要求根据需要将其抬起

  3. 如果您需要使VM大，请不要警惕使其大（请参阅规则1）

  4. 如果您可以从“ T恤尺寸”的角度更适合与单个pnuma节点或更小的一致性相符的视角。不要为了对齐，只需使您的T恤尺寸与NUMA节点对齐，请参见规则1 :)

  5. 不要任意选择VM尺寸（例如12个VCORS，因为我的PSOCTECT是12个），因为您拥有的硬件今天看起来某种方式。那个硬件可以/会随着时间的推移升级，您真的想逆转X级X年倒数吗？（我想不是）

  6. 如果您关心CPU敏感性，请先关心超额认证，并确保基础硬件可以完成工作。就像在五金店购买合适的工具

  7. 如果您仍然关心CPU敏感性，请首先遵循吻原则。从理智的默认设置开始，测量，然后从那里收听。微观优化和过早优化是魔鬼，无论您使用哪种技术:)

  8. 如果您真的非常关心CPU敏感性（想想HANA），请开始考虑我们如何提供VNUMA优化的实施细节 - 我们在那里有几个旋钮，让我们潜水！

请参阅上面的Reddit链接中的其余线程

乔恩·科勒|Nutanix工程技术总监|Nutanix NPX＃003，VCDX＃116 |@jonkohler |如果有用的话，请荣誉！
Piling on to this thread, I addressed this relatively recently when it came up on Reddit, here:\u00a0https:\/\/www.reddit.com\/r\/nutanix\/comments\/nvviq1\/ahv_vcpu_best_practice_2021_when_to_configure\/h21uj35?utm_source=share&utm_medium=web2x&context=3<\/a><\/p>

Copying in my list of\u00a0some key \"generalisms\" from me, feel free to take these as company level canon, I'll put this in stone right now:<\/span><\/p>

  1. \t

    Give your apps what they need, nothing more, nothing less<\/p>\t<\/li>\t

  2. \t

    If that changes over time, bump it up as needed based on the observed utilization and your performance requirements<\/p>\t<\/li>\t

  3. \t

    If you need to make a VM big, don't be wary of making it big (see rule 1)<\/p>\t<\/li>\t

  4. \t

    If you can fit things more sanely from a \"t-shirt size\" perspective that aligns better with single pNUMA node or smaller, do it.\u00a0Do not<\/strong><\/em>\u00a0just make your t-shirt size aligned to a NUMA node for the sake of alignment, see rule 1 :)<\/p>\t<\/li>\t

  5. \t

    Do not arbitrarily pick VM sizes (like 12 vCores because my pSocket is 12) just because the hardware you have\u00a0today<\/strong><\/em>\u00a0looks a certain way. That hardware could\/will upgrade over time, and do you really want to go reverse engineer VM sizing X years down the road? (I think not)<\/p>\t<\/li>\t

  6. \t

    If you care about CPU sensitivity, care about oversubscription first and making sure the underlying hardware is up for the job. That like buying the right tool for a job at a hardware store<\/p>\t<\/li>\t

  7. \t

    If you still care about CPU sensitivity, follow the KISS principle first. Start with sane defaults , measure, then tune from there.\u00a0micro optimizations and premature optimizations are the devil no matter what tech you use :)<\/strong><\/em><\/p>\t<\/li>\t

  8. \t

    If you really really care about CPU sensitivity (think hana), start thinking about the implementation specifics of how we offer vNUMA optimizations - we've got several knobs there, and lets dive in!<\/p>\t<\/li><\/ol>

    See the rest of the thread in the reddit link above<\/p>","quoteUsername":"Jon","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

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