Welcome to Server Fault
Server Fault is a question and answer site for managing information technology systems in a business environment. It's built and run by you as part of the Stack Exchange network of Q&A sites. With your help, we're working together to build a library of detailed answers to every question about server, networking, or related infrastructure administration.
We're a little bit different from other sites. Here's how:
Ask questions, get answers, no distractions
This site is all about getting answers. It's not a discussion forum. There's no chit-chat.
Just questions...
...and answers.
Good answers are voted up and rise to the top.
The best answers show up first so that they are always easy to find.
The person who asked can mark one answer as "accepted".
Accepting doesn't mean it's the best answer, it just means that it worked for the person who asked.
Is there a reason to give a VM a round base-2 amount (2048MB, 4096MB, etc) of memory?
The title pretty much says it all, is there any advantage to giving a VM 2048MB of memory instead of rounding to base-10 and doing 2000MB?
2,1616 gold badges27 silver badges42 bronze badges
2 Answers
The physical memory in the server is a multiple of a power of two, so it will slice evenly if you use other multiples. There may be some incredibly minor improvements with SLAT and such if they're properly aligned too. Otherwise no.
78.2k11 gold badges127 silver badges220 bronze badges
Hyper-V internally allocates memory in 2MB chunks. The hypervisor itself will use 2MB page table entries for efficiency, if possible, if your processor supports Second-Level Address Translation (SLAT.) This will be possible for pretty much any VM with Dynamic Memory turned off.
Other than that, no it doesn't matter.
5,16619 silver badges15 bronze badges
Get answers to practical, detailed questions
Focus on questions about an actual problem you have faced. Include details about what you have tried and exactly what you are trying to do.
Not all questions work well in our format. Avoid questions that are primarily opinion-based, or that are likely to generate discussion rather than answers.
Questions that need improvement may be closed until someone fixes them.
Tags make it easy to find interesting questions
All questions are tagged with their subject areas. Each can have up to 5 tags, since a question might be related to several subjects.
Click any tag to see a list of questions with that tag, or go to the tag list to browse for topics that interest you.
Is there a reason to give a VM a round base-2 amount (2048MB, 4096MB, etc) of memory?
The title pretty much says it all, is there any advantage to giving a VM 2048MB of memory instead of rounding to base-10 and doing 2000MB?
2,1616 gold badges27 silver badges42 bronze badges
You earn reputation when people vote on your posts
Your reputation score goes up when others vote up your questions, answers and edits.
As you earn reputation, you'll unlock new privileges like the ability to vote, comment, and even edit other people's posts.
At the highest levels, you'll have access to special moderation tools. You'll be able to work alongside our community moderators to keep the site focused and helpful.
Improve posts by editing or commenting
Our goal is to have the best answers to every question, so if you see questions or answers that can be improved, you can edit them.
Use edits to fix mistakes, improve formatting, or clarify the meaning of a post.
Use comments to ask for more information or clarify a question or answer.
You can always comment on your own questions and answers. Once you earn 50 reputation, you can comment on anybody's post.
Remember: we're all here to learn, so be friendly and helpful!
The physical memory in the server is a multiple of a power of two, so it will slice evenly if you use other multiples. There may be some incredibly minor improvements with SLAT and such if they're properly aligned too. Otherwise no.
78.2k11 gold badges127 silver badges220 bronze badges
Unlock badges for special achievements
Sign up to get started
Signing up allows you to:
- Earn reputation when you help others with questions, answers and edits.
- Select favorite tags to customize your home page.
- Claim your first badge: Informed
Server Fault is part of the Stack Exchange network
Like this site? Stack Exchange is a network of 182 Q&A sites just like it. Check out the full list of sites.
