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Questions tagged [hyperthreading]

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Understanding Intel HTT

System 1: Notebook Detect the installed CPU: $ cat /proc/cpuinfo | grep "model name" | head -1 model name : Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz The data sheet says: no. of Cores 2 no. of Threads 4 Detect Cores and Threads: $ sudo dmidecode…
Dennis
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ESXi hyper threading numbering for affinity settings

I have server that contains 2 physical socketed Xeon CPUs. Each Xeon has 6 cores, so with hyperthreading disabled on one server I have CPUs 0-11. If I enable hyper threading, I was under the impression that logical CPUs would be 0-23 (0-11 for…
Sean W
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Does hyperthreading on client PCs have any impact on network performance?

My knowledge of networking is pretty minimal, and my hardware knowledge is only slightly better so please bear with me. I work for a small non-profit that's getting a new computer network set up by another company. The server that they'll be…
Samantha Maurice
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What are the performance implications of Hyper-threading for single Nehalem+ CPU?

I am choosing between two models of servers, the major difference between them being the the availability of Hyper-Threading. Servers in question are SYS-E32-1 and SYS-E32-3 from So you Start (an OVH brand) and use either Intel Xeon E3-1225 v2 or…
Nickolai Leschov
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Maximum CPU and hyperthreading

Hyperthreading doubles the logical cores, but doesn't double CPU resources. Linux measure CPU usage in %, allocating 100% points for each thread, thus reporting a maximum of 800% for a quad-core CPU with HT activated. Anyhow I understand that…
Mascarpone
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Ubuntu 10.04 & Intel Hyperthreading

Does Ubuntu 10.04 allow the use of hyperthreading with the new Intel i7 processor?
user30875
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Maria Performance Tuning: HyperThreading is great for marketing, lousy for performance

I'm looking into optimizing my database server and this is what I read in Maria's official documentation here. How true is this? More so, how is this true? Apologies if this is not the best place to ask this question. Please redirect me.
ystark
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How vCPUs are calculated?

Yesterday I contacted my vendor to buy a server, and I asked them how I should calculate the CPU and RAM requirements for my server, given that I want to create multiple virtual servers on it He said 12 core (6 core x 2 sockets) = 24 Logical…
washaq
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Multi-CPU server with CPUs of differing core counts

Is it possible to have a multi-CPU server where the CPUs do not necessarily have the same number of core counts? For example, a group of 4 at dual core and a group of four at quad core? This question is independent of any OS. EDIT David answered…
IamIC
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Hyperthreading can only create two threads?

HyperThreading can only create two cores/threads ? More can not be created by design or is there any other limitation ?
Basit Anwer
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