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- Device drivers smooth. The vmxnet and vmxnet3 networking drivers improve. Called hgfs.sys on Windows guest operating systems and vmhgfs on Linux and.
- How can I confirm if my vmxnet driver is installed. How can I confirm if the vmxnet driver is installed on my CentOS server? VMXNET3 performance on Linux on.
- Choosing a VMware NIC: Should you replace your E1000 with. Typically Linux versions 2. You must install VMware Tools to have a driver for the VMXNET network.
What kind of performance can I expect from VMXNET3 adapter when running two Linux guests on the same VMware ESX private network defined between those guests? I use VMXNET3 adapter for communicating between these OSs and E1000 adapter to talk to external world.
Home; Download; Documentation; Development; Mailing Lists; Events; News; About; vmxnet3-usermap DESCRIPTION. Here are two drivers for the third generation of paravirtualized NIC in VMware ESXi (vmxnet3): a Linux kernel driver and a Poll-Mode Driver (PMD) for DPDK.
When I run iperf TCP performance test I get 3.7 Gbits/sec on the VMXNET3 adapter and 1.6 Gbits/sec on the E1000 adapter. I would have expected VMXNET3 to be up in the 10+ Gbits/sec range.
OS guests are powered by Red Hat Enterprise Linux 6.5, 64 bit, kernel 2.6.32-431.el6.x86_64 under the control of VMware vCenter Server Hypervisor 5.0.0 build 913577. Host server used for benchmarks is IBM x3950 M2 server model 7233-AC1, 24 cores Intel Zeon X7440 2.66 GHz, 256 GB RAM with 1GB Ethernet NICs.
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VMware tools installed in guest OSs are v8.6.10 build 913593 (seems to be the latest at the moment).
2 Answers
That's a really old version of VMware ESXi. The performance does seem to get better with newer revisions, but what you are seeing is probably accurate for that vintage.
Is there any reason your VMware environment hasn't been patched or updated? VMware tools are usually tied to the host version and patches, so you're running 2012-era VMware tools on a 2012-vintage ESXi installation. I have tools version 9.4.0.
You can update the tools independently of the ESXi installation by leveraging the VMware Operating System-Specific Packages (OSPs).
See:How do I make sure VMware Tools is installed and running?
On a modern ESXi 5.5 local copy (same host) between vmxnet3 VMs running EL6.5, I see:
Client:
Server:
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ewwhiteewwhiteTry changing ethernet driver settings.
See
If you experience low performance with the para-virtualized network drivers, verify the setting for the GSO and TSO features on the host system. The para-virtualized network drivers require that the GSO and TSO options are disabled for optimal performance.'
This is about virtio drivers, but I think the same might apply to vmx drivers.
You can also find a lot of similar articles about VMWare:https://info.pleasantsolutions.com/Blog/VMware_Networking_Speed_Issue
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Jenny DNot the answer you're looking for? Browse other questions tagged linuxperformanceredhattcpvmware-vsphere or ask your own question.
Guest OS: Ubuntu 14.04
Host OS: Windows 7
VMware Workstation 10
Problem:
vmware tools automatically install vmxnet3 driver, without an option to select nic driver.
In .vmx, ethernet0.virtualDev = 'e1000'.
So ethernet0.virtualDev doesn't decide which driver to be used.
How to change NIC driver from vmxnet3 to vmxnet?
How To Obtain Vmxnet3 Network Drivers
1 Answer
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Can you try adding a second adapter? Choose the type you want, then delete your first one? Then you would need to change the config file and edit any IDs are MAC that was tied to the first adapter and put in the info for the second adapter