VMs are really slow (Solved)

[overscsi]

I solved this by myself : I've installed then disabled Hyper-V and it fixed Workstation

Hello there,

First of all, I past hours on google to find a solution without any success.

When I'm installing a program e.g. (even a lite one), it can take up to 30 min to finish.

VMs are not laggy (e.g. mouse runs smoothly) but are slow to execute actions, execute programs.

To shut down a simple fresh installation of a windows vm, it takes 10 min to do it.

I'm using lastest version of VMWare Workstation trial.

My pc settings :

. Processor : Intel® Core™ i5 4570s ( quad core - 3.7 GHz)

. RAM : DDR3 16 Go PC12800 (1600 MHz) Corsaire Vengeance

. OS : Windows 10 Pro (64bits)

. Motherboard : ASUS Z87-Pro C2

. Power supply : Corsair HX850i 80+ Platinum

. Storage : Samsung SSD 850 Pro 128GB (OS) + 2xWD Black 3 To SATA 6Gb/s (where are stocked the vms)

. Internet : CAT5e Ethernet cable at VDSL2 Vectoring 100 Mb

Here is what I already tried :

-Virtual drives are stored on a single file

-virtual drives defragmented

-Runing a vm alone

-VMware Workstation Procces priority on high value

-more that 20% space disk free on guest and host

-Even if the cpu and ram usage are ok, I tried to Add more CPU and add more or less RAM on vm

-Turned off the AV on the host (and no av on the vm)

-Power performance turned ON on host and VM

-VMware tools installed and up to date

-Screen saver off

-VMware Workstation installed on a SSD and VM stocked on a 3TB Western Digital Black drive

-My HDD are new, but I ran a SMART test with the official WD tool and the test is passed, the HDD is not fragmented.

-Tried both x86 et x64 Windows VM (x64 host)

-deleted snapshots

-Even if I've no performance issue on my host, I closed all applications runing

-I don't use linked vm

-Had the same issue on my previous computer (I only kept from my previous pc my ssd with the host OS installed on it)

-Run Workstation as admin

-Use preallocated disks

I can copy filed up to 140 MBps on my hard disk, so it runs fine, but when using VMware workstation, write speed is stuck to 7MBps, while running 1 or 10 vms

One thing to note : my CPU doesn't have hyperthreading. But I had one before with this option got the same issue.

I'm stuck with this problem, it would be nice if you could help me out.

[bonnie201110141]

Can you give it a try if adding below line in your vmx solve your issue?

mainMem.useNamedFile = "FALSE"

[bonnie201110141]

I think you can also try this KB:

VMware KB: Troubleshooting hosted disk I/O performance problems

[overscsi · Accepted solution]

Thank you for the reply, but unfortunatly it didn't solve my issue.

I've already tried everything of this KB except the line

mainMem.useNamedFile = "FALSE"

but it doesn't solve my issue neither.

Here are some more informations :

-Run Workstation as admin

-My HDD are new, but I ran a SMART test with the official WD tool and the test is passed, the HDD is not fragmented.

-To shut down a simple fresh installation of a windows vm, it takes 10 min to do it.

-I can copy filed up to 140 MBps on my hard disk, so it runs fine, but when using VMware workstation, write speed is stuck to 7MBps, while running 1 or 10 vms

-Takes about 2 min to suspend a vm

EDIT : I solved this by myself : I've installed then disabled Hyper-V and it fixed Workstation