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VMware

Simulating NUMA Nodes for Nested ESXi Virtual Appliances

To troubleshoot a particular NUMA client behavior in a heterogenous multi-cloud environment, I needed to set up an ESXi7.0 environment. Currently,...
frankdenneman
Mar 2, 2023 2 min read

DRS Migration Threshold in vSphere 7

DRS in vSphere 7 is equipped with a new algorithm. The old algorithm measured the load of each host in the...
frankdenneman
May 8, 2020 4 min read

Machine Learning Workload and GPGPU NUMA Node Locality

In the previous article “PCIe Device NUMA Node Locality” I covered the physical connection between the processor and the PCIe device...
frankdenneman
Jan 30, 2020 10 min read

VMware Cloud on AWS on Virtually Speaking Podcast

Last week I had the pleasure of connecting again with my friends and colleagues Pete Flecha a.k.a PedroArrow and eternal sunshine...
frankdenneman
Apr 9, 2019 15 sec read

My New Role

A couple of months ago I joined the Office of the CTO of the Cloud Platform Business Unit and started reporting...
frankdenneman
Oct 8, 2018 1 min read

To which host-level latency statistic is the SIOC congestion threshold related?

Today someone asked if the congestion threshold of SIOC is related to which host latency threshold? Is it the Device average...
frankdenneman
Jul 23, 2012 2 min read

IP-Hash versus LBT

vSwitch configuration and load-balancing policy selection are major parts of a virtual infrastructure design. Selecting a load-balancing policy can have impact...
frankdenneman
Feb 24, 2011 5 min read

Setting Correct Percentage of Cluster Resources Reserved

vSphere introduced the HA admission control policy “Percentage of Cluster Resources Reserved”. This policy allows the user to specify a percentage...
frankdenneman
Jan 20, 2011 3 min read

Beating a dead horse – using CPU affinity

Lately the question about setting CPU affinity is rearing its ugly head again. Will it offer performance advantages for the virtual...
frankdenneman
Jan 11, 2011 6 min read

AMD Magny-Cours and ESX

AMD’s current flagship model is the 12-core 6100 Opteron code name Magny-Cours. Its architecture is quite interesting to say at least....
frankdenneman
Jan 5, 2011 1 min read
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