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robertchina
Contributor
Contributor

Where's 0.5M go?

I intalled a EXI 5.5 VMs on workstation 10, and I assigned 4096M for this VM. after successful installation, I managed this virtualized ESXI host using vSpere Client, from Configuration->memory, total of 4095.5M is displayed. where's the 0.5M go? Would you someone kindly give me a answer?

TIA

Robert Li

2014/8/25

4 Replies
NealeC
Hot Shot
Hot Shot

Hi Robert,

Have you noticed that it also doesn't report the CPU exactly rounded up too?

My CPU is a 1.3Ghz Dual Core, vSphere client reports it as 2x1.297

My Microserver also has 16Gb in it.  This should show as 16384, instead it shows as 16351.12MB so I'm missing 32 and a bit Mb.  Which is exactly what I have allocated in the BIOS of the Microserver to be used as video memory.

However you are running esxi as a vm in workstation.  Looking at the video card settings, a minimum of 1.18Mb of your VMs memory has to be reserved for video memory.  So I'd actually expect your vSphere client to be showing up as Total Capacity of memory to be 4094.82Mb.

Even so, I really wouldn't worry where 512kb has gone.  If you need that memory desperately then you're probably not running with enough memory to start with :slightly_smiling_face:

-------------- If you found this or any other answer useful please consider the use of the Helpful or Correct buttons to award points. Chris Neale VCIX6-NV;vExpert2014-17;VCP6-NV;VCP5-DCV;VCP4;VCA-NV;VCA-DCV;VTSP2015;VTSP5;VTSP4 http://www.chrisneale.org http://www.twitter.com/mrcneale
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Anjani_Kumar
Commander
Commander

Well this terms called memory gap. in your workstation select VM" power on to Bios" >advanced> advanced chipset control > Enable memory gap : Disabled.

I means 128 KB conventional memory gap will be there . Start from 512 KB or a 1 MB Extended memory gap.

Find this screen shot for the reference.

memory gap.jpg

Thanks

Anjani

Please consider marking this answer "correct" or "helpful" if you found it useful. Anjani Kumar | VMware vExpert 2014-2015-2016 | Infrastructure Specialist Twitter : @anjaniyadav85 Website : http://www.Vmwareminds.com
robertchina
Contributor
Contributor

Hi, Anjani:

      Very thankful for you good advice. But when I followed your instruction, and set Enable memory gap to "conventional" or "Extended", more memory lost. and for "conventional", 128K more, and for "extended", 1M more and totally 1.5M lost exactly. Would you have another suggestion.

Robert Li

2014/8/29

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Anjani_Kumar
Commander
Commander

Robert,

first of all this memory gap will be always there.to run some process. you will never get the exact memory under the server which you will defined. there will be .5M or 1M gap will be there.

You cant deny this situation. And i believe .5 or 1M memory will not decay a lot of memory issue in your system performance .

Please consider marking this answer "correct" or "helpful" if you found it useful. Anjani Kumar | VMware vExpert 2014-2015-2016 | Infrastructure Specialist Twitter : @anjaniyadav85 Website : http://www.Vmwareminds.com
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