vSphere virtual integrated cpu speed limit?

Similar Questions

• VM CPU speed limit - why?

  In our environment, I have been asked to limit the MHz available to virtual machines with multiple vCPUs.  I got it because it will prevent a VM with bad software or process broke to consume multiple cores on the host.

  My thought is that this is not serious if we limit the speed.  If a virtual machine will enter 2000 MHz or 1000 MHz, anyway it has a heart on the host.  If my host has power 3000 MHz and my VM cannot take 1000 MHz of this power (because it is his limit), it still has the heart.  I don't think that the 2000 MHz extra on this kernel is available to other virtual machines until the virtual machine with the wrong process restores the kernel.

  With this reasoning, I should remove the limits and let the VMs system run.  A bad process that will break the VM will impact the host even if the MHz is limited or not.

  Am I right or not?  Someone can explain better, or is there a documentation I can read and use as justification?

  1000 MHz or 2000 MHz, anyway that there the heart on the host.

  VM do not have access to material that's a software emulated time slice.

  You can set limits of pools, give you a limit to the pool, the virtual machine shares the pool if one of these virtual machines exceeds this limit of pool, this will not affect ANY site of vm this pool.

  By the way... even if an application is crazy... This is whence the priorities, you can make this virtual machine a lower priority such as the other virtual machines may take precedence over the CPU.

• Speed limit of network in the workstation?

  Do you know if there is no speed limit of network between the virtual machines running on the same workstation to Vmware? I think remember something about say 1 Gbps as maximum, but if virtual machines can provide throughput more - it will go by?

  Do you use bridged or one of the networks vmnet1 hostonly or 8

  hostonly networks are limited only by the host CPU resources

  But anyway - Gbit network is much faster than anything that can manage virtual disks

• Host Link link Guest speed speed limit

  Hello..

  It is a Question: is somehow the link speed of the host not to limit the speed of the link of a guest (VM) access the HOST?

  Example:

  What happens if we have a host that is equipped with a 100 Mbit NETWORK card and a guest who has a virtual 1 GB card NIC (Intel Pro 1000 thingy). OF COURSE the guest CANNOT reach the external network (Physics) with the speed of 1 GB or vice versa since its limited through the physical NETWORK adapter of the host...

  BUT... The Question now is... WHAT the maximum performance of such a guest if we want fair access network-HOST Services itself? It is a local connection, I guess. What speed can be achieved here?

  Background:

  I have here a host FAT on Ethernet 100Mbit, 16Gig RAM, 2 x Intel XEON CPUs, Debian 5.0.1 and VMWARE 2.0.1 4core. My guest inside is also Debian 5.0.1 with a 100mbit NETWORK card PCnet32 virtual thingy. My host can read data from local raid with about 120 MB/s (mega bytes/s). My guest (using iSCSI to enter the Volumes on the host and so using the internal virtual network) can read about 11.2 MB/s of the host Diskdrives.  It made me courious, since ~11.2MB/s is on a 100mbit NIC maximum flow. But it is a BIG difference on performance. BTW: the same client can access data files of local virtual disk of GIS (vmdk) by AT LEAST 120 MB/s (local caching disabled). So, where is the limit and the bottleneck?

  Any ideas/suggestions?

  Axel Werner wrote:

  And now you tell me... that the Networking Performance between guest and host VMWARE here is this effect limited to 100 Mbps, because I don't meet with the host NIC (which takes place in)

  100 Mbit)?

  Yes.

  But COMMENTS <>network HOST my NIC speed would not be limited if I'd put the guest in a virtual network "HOST ONLY"?

  Yes.

  If Yes... WOW! But... what would look like if you have Clients who want to access the Guest VM as a server files to a configuration/solution? you will need some sort of routing/bridging again.

  N °

  Oh... would be 2 NICs in this guest so be a good solution? like: < USER-BRIDGED-LAN >--< GUESTVM > [NIC2]-< HOSTONLYNETWORK >

  Yes.

  If the GUEST VM by wire-speed, users can access and GUESTVM access HOST of Services at the speed of the cpu. Is this correct?

  I didn't say CPU speed, I said, it depends on the speed of the CPU. But in general, Yes.

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

  AWo

  VCP / vEXPERT 2009

• Satellite Pro A300: XP - Internet HSDPA speed limit - only 1 MB

  Hello

  I am user of 2 different models of Toshiba Satellite Pro A300-1NT.
  I use XP Professional extracted from the original XP Recovery disk.

  When it is connected to internet provider GSM using ExpresCard HSDPA modem or HSDPA USB modem I get 1 MB speed limit control on speedtest websites (ie: speedtest.pl) and internet usage is relatively slow when comparing other computers.

  When Windows Vista was installed on the model of the A300 speed was greater than 5 MB.

  I already checked, I'm in the range of UMTS and speed on other computers (Toshiba Tecra with WinXP Pro, Toshiba A100) and M70 with Win XP Home with the same modem (Huawei) has no such speed limit

  What might be the case and the solution?

  Hello

  Have you checked the WLan performance using different WiFi standards?
  You can change the Wlan standards in Device Manager-> card Wlan-> properties-> Advanced tab.

  Check the settings there.
  I recommend using a WiFi standard 802. 11 G for example instead of B/G

  In addition, you should check if you can update the WLan driver and if the BIOS is updated.

• Is there a speed limit on the ethernet cards?

  Hey guys do you have an idea who is at - it a speed limit on the Ethernet cards, because I can use the P2P so fast that, after awhile, my internet connection is stopped as, I can't do anything unless I unplug, wait a while and connect again. Don't you think that it is a hardware or software problem?
  By the way: my Ethernet card is Marvell Yukon 88E8036 PCI-E Fast Ethernet Controller.
  I need your help. Thank you.

  Hello

  In my opinion, if you have some problems with the internet connection the reason should not be any kind of speed limit but also other different reasons.

  In your ad, you're not mentioned that you do exactly. You write e-mails or do the download of two different movies and many mp3 files?

  As far as I know if you do the full download the connection can be slowed or even stopped by FAI. Is your cable may be defective. The LAN cable has 8 lines and if one line is faulty speed will fall automatically.

  I also recommend you use a malware scanner and check the unit.

  Good bye

• SPEED LIMIT OF DOUBLE CLICK KEY

  I have a HP Probook4540s runing Windows 7 Professional. Last night, he started a speed limit on double substitution in a screen or program any key. Whenever I have a double character like "ee" or "oo" or same double line spacing or BACKSPACE or delete, once I hit key desired, I have to wait a second or 2 before I hit him again so he could register.  I don't know that there is a setting somewhere where I need to check or uncheck a box, but I have no idea where he might be. I've looked everywhere I can think of. It is not specific to a certain program, it happens in all programs, all screens.

  Hello

  Check the following points.

  Open windows control panel, open ease of access Center and click on the link "make the keyboard easier to use.  If there is a check mark in the box beside "Turn Sticky Keys" or "Turn on filter keys", delete them and then click on apply to save the changes to see if that solves the problem.

  Kind regards

  DP - K

• VMW Virtual Machine CPU Utilization - script

  Hello team,

  As you know the virtual machine CPU usage will check for crampons, drops drama or sustained high levels in the use of the CPU on a virtual machine.

  But I'm looking Foglight to trigger alert when it reaches more than 95%, I want that all alerts to change radically.

  Here's the script available right know.

  could someone let me know how?

  history = #utilization of $scope.hostCPUs for 90 min #;

  average = avg (history);

  STD = stddev (history);

  If (mean.isNaN (): std.isNaN ()) return false;

  If (Max (History)< 0.5="" *="">

  Returns false;

  If ((#utilization de $scope.hostCPUs # > (moyenne + Registre ("VMW:cpu.)))) ((STDev.warning') * std)) | (#utilization of $scope.hostCPUs #)< (mean="" -="" registry("vmw:cpu.stdev.warning")="">

  || (#utilization of $scope.hostCPUs # > registry ("VMW:virtualMachineCPU.warning")))

  )

  Returns true;

  on the other

  Returns false;

  Thank you

  Vivek

  Hi Vivek,

  You could disable this rule of origin and create a new one with this condition:

  If (#utilization of $scope.hostCPUs # > registry ("VMW:virtualMachineCPU.critical")))

  Returns true;
  on the other
  Returns false;

  Let me know if it works,

  Gaston.

• ESXi and virtual machine CPU cores

  The question I would ask is the ESXi processor cores and relationship of the virtual machine CPU. Is it recommended to assign some carrots to VM (this is assuming that the VM needs CPU extra for reasons of performance)? We will use the following example. If the host ESXi lies the VM has 40 cores of the processor is recommended to assign carrots in 2, 4, 8 format to the virtual machine? And that's okay assign 6 since 40 is not divisible by 6.

  jrmunday: when it comes to carrots vs sockets, they are there for purpioses licenses, other than one vcpu is a vcpu

  soda: each kernel is a vcpu, so you should not worry of the underlying hardware and the divisibbility... It is not a mathematical formula to be used on the basis of underlying archatecture. the only reason underlying archatecutre would be important is VCA differences, not the underlying differences.

• How to start vritual machine on vSphere virtual server

  Hi all

  I would like to start the virtual machine on vsphere virtual server. Unfortunatelly when I try to start it I see the message:

  "You can not on virtual machine in the virtual machine.

  I found a solution on google but only worked for vSphere4 virtual server.

  Thanks in advance

  Artur

  Always the same answer. You must edit the .vmx for your servers files virtual vSphere.

  ---

  MCSA, MCTS, VCP, VMware vExpert 2009

  http://blog.vadmin.ru

• Speed limit of the network in the Virtual Machine

  I used to use a command in a VM's VMX file in VMWare Workstation 6 which allowed me to adjust the speed of the network in bits per second.  For example, I could put the speed of the network down to a modem of 28.8 or less if I wanted to.  I don't remember the VMX command to implement and I can't find my documentation, even if I know for sure, I used the feature in the past to solve the problems that occur only during slow connections (I've not used a team).  It's a manual change of the VM VMX file and it worked very well.  Anyone know which command I'm looking for?

  Maybe ethernet0.txbw.limit. Check out this link too.

  http://sanbarrow.com/VMX/VMX-network-advanced.html

• Confusion of CPU speed!

  My speed cpu database is written 997,7 mhz cpu - z, it should be for a right t5450 1.66 ghz?

  May be the result of the lower clock speed to save energy. Your CPU will dynamically change its clock speed depending on its load. You can watch the gear shift to clock using Rightmark CPU Clock Utility found here: http://cpu.rightmark.org/download.shtml, direct download here: http://cpu.rightmark.org/download/rmclock_235_bin.exe

  Go to the monitor option and look at the clock up and down between 1 GHz at 1.66 Ghz.

  Or, it is possible that you are in power saving mode. I think that automatically limits the upper limit of the clock speed to a certain value. Try to switch to high-performance mode.

• VMs will be running not because of a poor estimate of CPU speed

  I recently installed the drive on a Windows 7 PC.  I can create virtual machines, but when I try to start them, I get the error:

  ASSERT d:/build/ob/bora-894247/bora/vmcore/vmx/main/timeTracker_user.c:232 bugNr = 148722

  followed by:

  Power error: cannot find a valid peers to connect to.

  During my research, I found 1227 KB which deals with this issue and recommend the insertion of three lines in the config.ini file.  In my config.ini file I've specified these values:

  host.cpukHz = "1900000".
  host.noTSC = 'TRUE '.
  ptsc.noTSC = 'TRUE '.

  I tried with just host.cpukHz setting at first, then added the other after that didn't work.  Also, I turned on sync time with host on all computers three virtual I created.  None of these things helped.

  I also found this post that refers to this problem being attributed to an incorrect estimate of the speed of the CPU.  I checked this on my system, and according to the host.maxKHzestimate.value registry value, my processor is estimated at 40,04 GHz.  (No, this isn't typo.)  Not coincidentally, I'm sure, the system in Windows screen shows the same incorrect reading.  I deleted these registry values several times and restarted the computer (and the player), but the estimate is always re-created to 40,04 GHz.

  The processor in this system is an Intel Core 2 Quad Q9400 @ 2 .66GHz, but I actually have underclocked to 1.9 GHz.  CPU - Z recognizes the speed correctly ~1.9GHz.  I have no idea whence the estimate of 40GHz.

  Just to be sure, this wasn't a problem with the virtual machines created on this system, I tried to copy a machine virtual work known from another system, but I get the same errors.

  It is a Windows 7 freshly installed PC - Player was one of the first pieces of software that I have loaded.

  Does anyone have any ideas on how I could get this thing working?

  It looks like a problem of security policy.  To apply the configuration options that you have added to the config.ini file, the user account must have the right to SeIncreaseWorkingSetPrivilege security.  Normally, this right is granted to all accounts default user.  If you are unable to grant this right to the user account for any reason, you should be able to set the configuration options in C:\Users\USERNAME\AppData\Roaming\VMware\config.ini instead.

• The virtual network card speed

  When I installed first of all ESXi5, I got 100 MB switches.  I replaced all the switches in my GB rack server and all the virtual machines and no VMs shows that they are connected to 1 GB.  I downloaded a free lan speed tool to see exactly how quickly my lan speed was and I noticed something strange.  The speed test on my VM server not approached speeds GB but when I test all my virtual machines I get only 100 MB speeds.

  I noticed in the configuration of the client vSphere tab its only showing 100 full duplex MB.  I've selected the vmnic0 and chose to edit the properties and change the configuration to 1000 full duplex mb speed.  This change has dropped all my virtual machines offline and when I checked on the physical server, I noticed the NIC has no light activity.  I scrambled to understand how to fix it and finally had to use a different port on the NETWORK adapter on the physical server to deliver my virtual machines on the network.  I always show 100bm on vmnic1 speed and always make me 100 MB speeds on the lan test that I run.

  This suggests two qustions for me:

  1. why my first nic stop working when I changed the speed in vSphere and how to operate again?

  2. How can I get my mV GB speeds.

  Thanks in advance for the help!

  Well, there's your problem

  Perhaps your switch port is not configured correctly or you have some faulty wiring or a faulty NETWORK card? Go to the configuration of your network host and click the icon of the legend to the right of vmnic1. This will show you the CDP information and will tell you the interface to check.

  I also see that you are on an old patch level, I highly recommend getting on the latest version, because a NUMA scheduling patch included in this compilation which makes a big difference in performance. This is unrelated to your current number, but thought I would mention it anyway.

  You can patch in the other uplinks to see what they are negotiating to?

• VSphere essentials 8 cpu cores

  Hi all

  We recently have quote a customer to purchase vsphere essentials with a server that will run 2 processors 6 hearts of each.

  After a month, that the customer has accepted the quote if we order the server, but we noticed it came with 2 CPUs, 8 cores on each. We always evaluate vsphere esxi 4.1 and we haven't bought yet most of license. The reason to upgrade to vsphere essentials was to migrate 3-4 very old physical servers to this new server. No need to HA or vmotion is necessary. We needed an inexpensive way to get rid of these old servers.

  Can someone explain to us what will be the situation if buy us the essentials license and insert it on vsphere? Esxi 4.1 vsphere will continue to operate with limited cpu core feature or it will prevent all our VMs to stop working?

  Thank you

  I can't answer your question with certainty, and I think the only one who can is VMware itself.

  My guess is that it can work, but you're probably violating the EULA.

  What I actually wanted to mention are the fact that some harware like HP providers offer a known BIOS setting 'disable Core processor'. This feature allows to disable some carrots.

  of http://h20000.www2.hp.com/bc/docs/support/SupportManual/c01905798/c01905798.pdf

  When to turn off the processor cores

  While disabling the carrots may seem paradoxical to provide superior performance, there are at least three situations in which the disabling processor cores may be beneficial.

  -Use of power reduction. Disabling the processor cores reduces processor power consumption. If a server is used in an environment that is not heavily dependent on multithreading hearts, by disabling the can reduce energy consumption without significantly affecting performance.

  -Increase overall performance. Some applications take advantage of higher frequency of basis rather than extra processing cores. When Turbo Mode is activated for processors Intel Nehalem, savings on electricity and heat produced by disabling the processor cores allows the remaining sons operate at a higher frequency than their rated speed. In the specific application environments, this could actually increase the overall performance of the system.

  -Meet the licensing issues. Some software are permitted on a basis of by heart. Deactivation of the cores allows an administrator to match the number of active cores on a server with licensing requirements. However, some software that is allowed on a per-core basis may not recognize the deactivation of carrots.

  André