Slow down the virtual machines on the host of underutilized - unknown reason

Hello

What could cause virtual machines running on a host computer with a lot of unused memory, processor power and disk IO sink so slowly that it takes 30 minutes just to open a Windows session on one of them?

I ran about 5 virtual machines on a host with 16 GB of RAM, but have now upgraded to 32 GB of RAM in the hope to add more virtual machines. At some point, most of the machines is idle, and SysInternals Process Explorer shows less than 20% use by the processors. E/s disk too is usually measured in kb/s - 16 disks systems although RAID is capable of much more of IO.

As soon as I run about 6 or 7 of virtual machines instead of about 5, I meet considerable slowdowns as mentioned above. I use only about 20 GB of the 32 GB in the system when problems occur.

Dramatik2

The aggreggate e/s disc is irrelevant.

You need to look at the disk queue length, read, write, transfer, etc.

http://www.computerperformance.co.UK/Healthcheck/Disk_Health.htm

Tags: VMware

Similar Questions

  • Slow down the host Communication target in real time

    I start with Labview RT.

    I wish that tor gave reading a thermocouple signal, then sending to host VI. It works, but to slow down.

    I tried to look at CPU, memory usage, but it's my second problem. The DSM does'nt contain functions should be.

    Am I missing a special configuration?

    Published network shared Variables are slow, especially in a high-traffic network.  I recommend that you use a network stream and set up your own communication scheme capable of handling the output rate higher.

  • No network connection between the virtual machines on different hosts ESXi

    I have several 5.0 ESXi hosts in a cluster managed by vCenter Server 5 and I have network problems:

    1. [Host A] running a virtual machine can ping any other computer virtual running on the [host A] great!
    2. A virtual machine running on host [B] can ping any other virtual machine running on [B] home - very well!
    3. [host A] (from the ESXi console) can ping any virtual machine running on [B] home - even better!
    4. [B] home (from the ESXi console) can ping any virtual machine running [host A] - beautiful set!
    5. A virtual machine running [host A] can not ping any virtual computer running on host [B] and vice versa - bad, very bad!

    So basically the problem is that the virtual machines can communicate on hosts. It is a major problem that I need to fix, for obvious reasons.

    Networking on all hosts is configured exactly the same way: a unique and standard vSwitch with a pair of gigabit network cards grouped, vmkernels configured for the vMotion, NFS and network management and a group of ports configured for the VIRTUAL local area network used by the VMs. (vMotion works fine on hosts, storage vMotion works very well too.) All virtual machines are servers Windows (2003 and 2008).

    Reason #3 and #4 above, my assumption is that #5 must be the result of an ESXi/vCenter configuration issue and not a problem with the switches of material upstream. Is this a reasonable assumption?

    Whatever it is, can anyone offer suggestions on how can I fix? It is quite annoying as I'm pretty sure that these hosts are configured in the same manner as those of our production cluster, which does not at all these problems!

    Thanks in advance for any help you guys can provide.

    To be honest, it looks like a problem with your physical network-

    How is the physical network configured - are NIC connects it to the same physical switches? Are the virtual machines on the same subnet? If this is not the case, they are able to ping the gateway sbnet? Can you piing host IP address from the virtual machines?

    I also moved it to a forum more approiate.

  • Get the number of virtual machines per ESX host

    I am able to get the account with the following script command, but what I want to do is to report a 0 if there is no virtual machines on a host.  Currently it just show nothing if there are no VMs.  Any suggestions?

    Get-VMHost | Sort - the name of the property. Select Name, @{N = "VMCount"; E={($_ | Get - VM). County}}

    You can add an IF in the part of the expression.

    Try it like this

    Get-VMHost | Sort-Object Name | Select Name,@{N="VM";E={if(($_ | Get-VM).Count){($_ | Get-VM).Count} else {0}}}
    

    ____________

    Blog: LucD notes

    Twitter: lucd22

  • The list of all virtual machines to a host group in Virtual Machine port group

    Ladies and gentlemen,

    I would like to create a powershell script to list all my virtual machines to a host, but a group of Machine virtual PortGroup... It is possible...? I see only found Internet see the VirtualPortGroup of the host...

    Thanks in advance & looks

    All your VMS have a mapping single portgroup or it not with multiple NICs on different port groups?

    If they are all the same, then the following should work:

    Get-VM | Select Host, Name, @{N="PortGroup";E={$_.NetworkAdapters[0].NetworkName}} | Sort PortGroup, Name, Host
    

    If you found this information useful, please consider the allocation of points for correct or helpful.

    Alan Renouf

    http://Virtu-al.NET

  • How one move the templates of virtual machine from one host to another host in the cluster even

    Hello

    Can you get it someone please let me know how to move the templates of virtual machine from one host to another host in the cluster even?

    Thank you

    James

    Welcome to the forums!

    Convert it to a virtual machine (right click on guest and choose the appropriateoption), move it through the migration feature (right-click Guest, and then choose "Migrate") and convert into a model (right click on guest again and choose to convert to a template).

    If you found this information useful, please consider awarding points to 'Correct' or 'Useful' responses Thank you!!

    AWo

    VCP / vEXPERT 2009

  • How do I disable Adobe Flash - too many sites have Flash ads that slow down the browser unless an analysis.

    Some pages contain 3, 4, 5 or more adobe flash ads running at the same time, which slows down the browser a lot. Then, if you happen to have several tabs open, the browser is dragging virtually interrupted and many times is not responding at all.

    I would like to be able to choose whether or not a page can run flash content - not it be something that works all the time for each page, with the only option being to kill the plugincontainer process in taskmanager - who kills even the Adobe Flash elements you can watch; like a youtube video.

    Why is there not a way to disable Adobe Flash in the browser? I have updated Firefox and Adobe Flash, but nowhere is there at - it an option to turn on or off according to your needs.

    A control can be added to the Internet Options that you can set to have a page request before it is allowed to run the Flash content? Having that kind of control would GREATLY increase the pleasure of sailing on several pages.

    Any information on how to do it, would be appreciated.

    Hello, this is already possible in firefox: go to firefox/tools > addons > plugins and shockwave flash to Activategame. then the plugin will be disabled by default but can be enabled on a site-by-site basis.

  • Flex 2 network slows down the entire network

    I bought a Flex 2 a few weeks ago. Installed the software Office 365 and creative cloud by Adobe. Everything worked well on both networks, I connect to.

    Today, performance on the entire network is now gone to the dogs. At first, I suspected the provider or router so crossed all the routines of standard service (this disconnect, which reboot) again and again. Same face, deadly slow performance of several PC and Mac on the network.

    Then, I hit on the idea to close my Lenovo. Suddenly, network download speed of 2 MB/s and the ping from 2000 MS to more normal speeds returned.

    I restarted the Lenovo a couple of times, from 2, 4 GHz to 5 with the same result.

    At some point when I plugged the Lenovo directly into the modem (part of the diagnosis) direct speed seemed faster.

    Because the router works perfectly with all the other machines and I haven't changed a thing on it, and because the symptoms get carried away on the network when the Lenovo is cut, I can only assume that there is something to do with the Lenovo Flex 2 and how it communicates with the rest of the network.

    I should also add that I tried to plug an ethernet cable to make sure that it wasn't just a wireless thing. Still had the slow performance.

    I'm pulling my hair out over this, if I can't fix it, I can't work (no one in my office will be able to work) and will have to return the machine...

    Any ideas?

    Thank you...

    Thanks for the reply.

    After much pulling hair and analysis where the traffic was, it turns out it was a Microsoft cloud service a too aggressive drive that decided to download dozens of large files at the same time instead of in series. This excessive series of connections slowed down the rate of time and transfer of ping everything on the network. Disable updates for OneDrive during periods of work seems to have solved the problem.

    That said, working on this, I see that updates from Lenovo is continually a significant overhead. Do not understand why it takes so resources...

    Thanks again for the response...

  • Why FFx21, from the opening, thus creating three CACHE of INTERNET files duplicate (01, 02, 03 & tot'ng 12 MB) slows down the site?

    On the 'OPENING' Firefox for the web, there is an initial use of 12 + MB of use via INTERNET CACHE files. These files show up, when using CCleaner, as... \_CACHE_001, 002, 003 each with a size of say 4 096 Ko. The browser seems to "lag" - particularly visible when I type in one of the available search bars... I tap and then wait for the letter or the word to display. In addition, Firefox crashed several times since the upgrade to the latest version (ffox 21). I have two images CCleaner printscreen to show files so useful, but not sure how to enter them here.

    Hello, these are the files where firefox stores its cache - you won't need CCleaner (in fact, it will be only slow down the things that you have already noticed, given that these files must be recreated after the next startup of the browser), you can also clear the cache with the mechanism built into firefox: How to clear the cache of Firefox

  • Can I use an SDXC (512MB) card as a drive hard primary (such as startup HD with El Capitan) on my iMac 5 K - end 2015? It will slow down the performance of the iMac?

    Can I use an SDXC (512MB) card as a drive hard primary (such as startup HD with El Capitan) on my iMac 5 K - end 2015? It will slow down the performance of the iMac?

    I did it with a 32GB SDHC UHS - I Transcend

    I do not recommend under OS X from such media, but it works very well. I was preparing for my review of the CPHA Yosemite and did not want to mess with the internal drive of OS X.

  • Slow down the automatic transition

    Hello!

    I'm working on an introductory presentation with automatic switching between slides. I want to slow down the presentation (I tried to put a 15 seconds delay) but it keeps on changing every second...

    Can someone help me?

    (I must say that my speech is in french... so I hope I used the right conditions...!)

    The procedure is:

    Select all of the slides in the Panel of the browser (click on a slide and then use: control)

    Inspector > Animation > add an effect of > select the effect in the list

    on the start menu, transition drop-down list box select automatically

    change the time of 15 seconds (double-click the entry, type in 15 and then on enter)

    This not work?

  • Slow down the Audio and keep beat related Sections

    Hello people,

    I have a song that I would like to remix and I all set beat matching.  When I go to slow down the audio I lose my bearings.  Is there anyway that I can keep the sections that I beat matched and slow down the audio so these sections remain?

    For example, that the song is 120bpm and I have this rhythm corresponded perfectly.  If I have a loop of 4 bars and slow down the audio I have more 4 perfect bars.  I want to be able to slow down the audio and still have my bars 4 faultless.

    I hope that makes sense.

    Logic Pro X: using Varispeed to change speed

  • Slow down the speed of FAR FAR AWAY in iMovie 10.1

    In iMovie 10.1 FAR FAR AWAY effect scrolls too fast and I don't think I should buy a market after effect fix a bug. How can I slow down the speed of the text please?  Roll the credits cost $20 and it will not work with updates so it is not an option, in addition to its construction in already, it is adjustable and now is not!  HELP PLEASE

    See that work around posted by Vanessa D 19 dec in this link

    Slow down the title Far Far Away in iMovie 10.1?

    I don't use version 10 so can't comment, but the link it seems to work.

  • is it possible to slow down the speed of scrolling text in the distance away from text generator?

    I'm trying to slow down the speed of text scrolling in the distance away from text generator.  Is it possible to make the text scrolls more slow?

    Stretch it to extend it.

  • Prevent the Beep.vi slow down the VI

    Hello

    I'm working on a metronome that should run for a period of x with a frequency of x. The time is in seconds and rate.

    Whenever there is the beet, the VI must make a beep. This can be done easily by the beep.vi, but the standard for the beep.vi is to play one system.

    This is a fairly long tone (10 of Windows). And so, I want to put my own frequency and duration of the beep.

    But when I change this in the beep.vi, the VI will wait for the set time (msec) before it continues the vi. If it slows down the whole VI.

    Is there a way to make the beep.vi a sound signal with frequency and duration that I put, without that it slows down the VI?

    Thank you!

    Have the code "beep" performed asynchronously to your hand VI: have the VI in another loop and use a queue / notifier to notify the loop when playing the main loop.

Maybe you are looking for