Tabula Rosa Systems Blog Of 10'8/2015 - Memory Ballooning

Memory ballooning Memory ballooning is a memory management technique that allows a physical host to take advantage of unused memory on its guest virtual machines (VMs). When a host OS is short on physical memory, the hypervisor polls balloon drivers installed on the guests to request available memory. The guests respond by using page-reclaiming algorithms to determine which pages are available and can be assigned to the balloon drivers. The process of assigning available pages to the driver is known as inflating the balloon. Releasing available pages is known as deflating the balloon. In a positive sense, memory ballooning allows that the total amount of RAM required by guest virtual machines to exceed the amount of physically available RAM on the host. A problem can occur, however, when a balloon driver inflates to the point where the guest VM no longer has the memory it needs to run processes within the guest. In such a scenario, the guest operating system will start swapping things out to deal with its memory issues. This swap activity can negatively affect performance, depending upon the amount of memory to recoup and/or the quality of the storage IOPS delivered to the VM. Other memory-reclaiming techniques include memory overcommit, memory paging, memory mirroring and transparent page sharing. ======================================================= For a great email parody, view the following link: ======================================================= https://www.youtube.com/watch?v=HTgYHHKs0Zw scoop_post=bcaa0440-2548-11e5-c1bd-90b11c3d2b20&__scoop_topic=2455618 ============================================== Special Bulletin - My just released book,  "You're Hired. Super Charge our Email Skills in 60 Minutes! (And Get That Job...)  is now on sales at Amazon.com  Great Reasons for Purchasing Netiquette IQ ·         Get more email opens.  Improve 100% or more. ·         Receive more responses, interviews, appointments, prospects and sales. ·         Be better understood. ·         Eliminate indecision. ·         Avoid being spammed 100% or more. ·         Have recipient finish reading your email content.  ·         Save time by reducing questions. ·         Increase your level of clarity. ·         Improve you time management with your email. ·        Have quick access to a wealth of relevant email information. Enjoy most of what you need for email in a single book.   ================================================ **Important note** - contact our company for very powerful solutions for IP  management (IPv4 and IPv6, security, firewall and APT solutions: www.tabularosa.net In addition to this blog, Netiquette IQ has a website with great assets which are being added to on a regular basis. I have authored the premiere book on Netiquette, “Netiquette IQ - A Comprehensive Guide to Improve, Enhance and Add Power to Your Email". My new book, “You’re Hired! Super Charge Your Email Skills in 60 Minutes. . . And Get That Job!” will be published soon follow by a trilogy of books on Netiquette for young people. You can view my profile, reviews of the book and content excerpts at:  www.amazon.com/author/paulbabicki  If you would like to listen to experts in all aspects of Netiquette and communication, try my radio show on BlogtalkRadio  Additionally, I provide content for an online newsletter via paper.li. I have also established Netiquette discussion groups with Linkedin and Yahoo.  I am also a member of the International Business Etiquette and Protocol Group and Minding Manners among others. Further, I regularly consult for the Gerson Lehrman Group, a worldwide network of subject matter experts and have been a contributor to numerous blogs and publications.  Lastly, I am the founder and president of Tabula Rosa Systems, a company that provides “best of breed” products for network, security and system management and services. Tabula Rosa has a new blog and Twitter site which offers great IT product information for virtually anyone.