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Short question and hopefully a positive answer:
Is it possible to create a virtual CPU that consists from multible real cores?
So lets say you have a 4x3.5 GHz CPU, can you create a vCPU that is 1x14GHz ?
Why do it?
If there is a software which is heavily CPU using, but can just use one thread, it would boost up the program.
I am not very advanced with hardware tech, but I guess there is no way to do that.
Thanks.
So lets say you have a 4x3.5 GHz CPU, can you create a vCPU that is 1x14GHz ?
No. As the expression goes -- nine women cannot make a baby in one month.
Each instruction executed by a virtual CPU can potentially be dependent on anything that previously happened on that CPU. There's no way to run an instruction (or a group of instructions) before all of the previous instructions have been completed. That leaves no room for another physical CPU to speed things up.
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I'd like to buy a multi GPU motherboard but wanted to separate the workloads separately on each GPU using windows
I know you can select a GPU for high performance in Windows 10 but that's not separating tasks/workloads
I.e. one GPU can work using one program and another GPU using another program without sharing workloads
Is this possible?
This kind of explicit multi-GPU management is supported by DirectX 12.
https://devblogs.microsoft.com/directx/directx-12-multiadapter-lighting-up-dormant-silicon-and-making-it-work-for-you/
https://gpuopen.com/wp-content/uploads/2017/03/GDC2017-Explicit-DirectX-12-Multi-GPU-Rendering.pdf
https://developer.nvidia.com/explicit-multi-gpu-programming-directx-12
https://www.intel.com/content/www/us/en/developer/articles/technical/multi-adapter-support-in-directx-12.html
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My Laptop is Sony Vaio model no SVE1511AENB and my RAM is of 2gb and its type is "1Rx8 PC3-12800S-11-11-B2". I want to exand my RAM so which RAM should I buy for laptop?
Definitely off topic but I feel compelled to answer anyway. Stack Overflow is for programming questions. Please use Super User or a hardware forum in future.
The link below says your laptop supports upto 8GB DDR3 1333MHz(PC3-10600) 204-pin SODIMM RAM so get 2x 4GB sticks. As long as you search for "DDR3 1333Mhz 204" or "DDR3 PC3-10600 204" RAM, it's then primary based on price. Some sites even say it supports 1600Mhz (PC3-12800) and you have that in your system currently.
I put in "ddr3 pc3-10600 1333mhz 204-pin sodimm 4gb" into eBay and plenty came up.
http://tech.firstpost.com/product/laptops/vaio-sve1511aenb-specification-293362.html
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I'm trying to measure the effects of cpu overcommitting on a KVM setup (both host and guest). I can detect performance is degraded when the number of vCPUs is increased but ideally I want to look at some more objective metric (like CPU Ready in esxtop). Is there an equivalent to esxtop for KVM that provides a similar metric.
There is a fundamental difference between how you monitor VMs in KVM and how you monitor them with ESXi.
Since a lot of people run KVM in Linux, I'm going to assume your underlying OS is a Linux based one.
How to get CPU Ready like functionality with KVM?
With htop enable additional metrics and watch the gu section. This tells you how much CPU usage a guest is using.
Use virt-top which tells you overall CPU usage (among other things) of a guest.
The oversubscription principles that apply to ESXi also apply to KVM. Although KVM does not use CPU bonding (by default) like ESXi does, you still do not want to go more than 1:5 ratio pCPU to vCPU ratio in KVM. Of course, this depends on how much you're utilizing the CPUs. You also do not want to give more CPU cores than necessary either. Start with 1 core and move up.
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In my application some time the SQL active connections were increasing abruptly. During the period we can't access the database from Management studio itself.
This problem occurs every 1 hour or 2 hours once and it stands for 20 minutes. I have checked the CPU utilization and RAM utilization, during the period no CPU resources were used. Once the problem resolved all the connections are released and the system start using the CPU resources after that only.
What I need to check for this problem? There is no additional process / program accessing the database during the period.
If you run SQL Server Profiler, to see the sql calls being made, which may give you a clue to the cause?
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I was wandering if (most common) motherboards provide hardware capabilities for measuring the exact power, expanded by the individual components - CPU, RAM, WiFi, etc.
As voltages are read and directly available e.g. in BIOS, I reckon that similar interface may be provided for the power consumption as well.
Searching Google for fedora18 power optimization pops up a nice guide. Inside, PowerTOP is recommended and it's use is described. The program "is a software utility designed to measure, explain and minimise a computer's electrical power consumption", and this is as close as it gets to answering my question. Voila.