Virtualisierung - Unterschied 2 Kerne mit 1 Thread oder 1 Kern und 2 Threads?

majusss schrieb:

Es geht nicht um Sockel sondern Threads pro CPU.

Zum Vergrößern anklicken....

xexex schrieb:

Habe mit jetzt die Frage vom TE zig mal durchgelesen und ich glaube er wirft hier Kerne und Sockets durcheinander.

Zum Vergrößern anklicken....

When creating a virtual machine you have the option to specify the number of virtual sockets and the
number of cores per virtual socket. In general, we recommend leaving this at the default value of 1 core
per socket (with the number of virtual sockets therefore equal to the number of vCPUs).
In some cases, though, you might have non-technical reasons to set cores per virtual socket to a value
other than 1. For example, software is sometimes licensed on a per-socket basis, making it desirable to
have multiple cores per virtual socket.
If you do choose to configure more than one core per virtual socket, there are a few factors to keep in mind:
„ For wide virtual machines, be very careful about setting cores per virtual socket to a value other than
the default (1 core per socket). It's best to first try the default to determine what vNUMA size ESXi
selects for your virtual machine in your environment. Once you know the vNUMA size, use it to
choose a value for cores per socket.
For example, when running a 16-vCPU virtual machine on a host system with 10 cores per physical
socket, ESXi will select a vNUMA size of 8. Once this vNUMA size is known, you would configure
this virtual machine to have 8 cores per virtual socket.
„ For non-wide virtual machines, the number of cores per virtual socket is not as critical as for wide
virtual machines. On rare occasions, however, configuring cores per socket to a value other than 1
could influence guest CPU scheduling in either helpful or harmful ways. Careful testing is therefore
recommended before changing this configuration.
http://www.vmware.com/files/pdf/techpaper/VMware-PerfBest-Practices-vSphere6-0.pdf

Zum Vergrößern anklicken....