Disable Hyper Threading in Ubuntu
I Am Running Ubuntu 16.04 Server. I Can See That Hype Threading Is Enabled When I Use the Lscpu Command. I Want to Disable It. I Went Through Ubuntu Forums and...
I am running ubuntu 16.04 server. I can see that hype threading is enabled when I use the lscpu command.
I want to disable it . I went through ubuntu forums and here and here.
These are good discussions why hyper threading may may- not be good. But no definitive solution on how to turn it off.
Can any give the steps for disabling hyperthreading ? Thanks .
8 Answers
Introduction
This is an interesting question. Probably one of the most interesting in months for me personally. Like the OP there is no option for disabling Hyper Threading in my old BIOS (invented 2012, updated 2016 or so).
Must Read
Hyper-Threading bugs in Intel Skylake and Kaby Lake:
Anyone using Intel Skylake or Kaby Lake processors must read the bug reports about Hyper Threading that surfaced a couple months ago. This UK Register story spells out how Debian Developers spotted how Hyper Threading can crash and corrupt the machine.
There are numerous problems with Skylake reported in Ask Ubuntu over the last year and one wonders how to discern which problems may have been caused by Hyper Threading bugs.
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