This might be a rookie question but if I'm currently on a 4:1 oversubscription of my CPU ressources does that mean that my processors performances are divided(splitted) into 4 lower perf. vCPU? Will a vm using 4 vCPU will just divide a pCPU into 4 to actually be as fast as the pCPU itself?
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This is a  about  Related:      I have a question regarding capacity planning. Can the Server Fault community please help with the following:   What kind of server do I need to handle some number of users? How many users can a server with some specifications handle? Will some server configuration be fast enough for my use case? I'm building a social networking site: what kind of hardware do I need? How much bandwidth do I need for some project? How much bandwidth will some number of users use in some application?
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My Intel CPU changes clock speed depending on the usage, but how does it decide what clock speed to run at? Is the clock speed determined by the OS software using an algorithm, or is it hardware based? Is it dependent on the # of interrupts? The cache turnover? Does the CPU itself set its own clock? Or does a separate controller set it? Or software?
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I recently upgraded my CPU from an Athlon II X2 250 to the Athlon II X4 610E(45W 4 cores -- can't beat the efficiency).  Is an ubuntu reinstall required?
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I understand that a multi-core processor can run multiple threads of the same process at the same time using its different cores. Can it also run multiple processes at the same time(each core running a different process)?
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With lowering silicon costs and rising consumer needs, manufacturers seem to be pushing one of two things: clock speed and/or core count.  With the way things are going, it doesn't seem that clock speed of processors is rising anymore, but the number of processor cores.  I remember only a few years back, I had a nice fast single-core Pentium 4 processor.  Fast-forward to today, and I don't think you can even purchase a single-core processor (not to mention the rising increase in multicore processors even in cellphones).  The way things are going, we might find computers with hundreds of cores in a few years (and I know many operating systems already have support for it).  Is it more beneficial to a system's overall performance to increase the clock speed, or increase the number of cores?  Assume we're getting into hundreds of cores all running together, or clock speeds ten times higher what we have today (regardless of whether or not that is physically possible).  What are some examples of common processes (e.g. encryption, file compression, image/video editing) that will most benefit from one or another?  Are there some processes which can be, but currently aren't (due to technical reasons) sped up by increasing their parallelism?    Assume the hypothetical processor has the exact same core design (word size, address bit width, memory bus size, cache, etc...), so the only variables here are clock speed and core count.  And again, I'm not talking about one, two, or even four cores - imagine tens to hundreds.
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Under Process Explorer, I noticed that System -- and occasionally Interrupts -- are taking between 5% and 20% CPU constantly, for hours on end. This is resulting in weird video playback problems. (Audio files have 'gaps' and YouTube videos have pauses in them.)  This problem has been happening for a while. Sometimes, a restart fixes it, IIRC. I also recently upgraded to a 1920x1080 monitor... But this shouldn't have any affect on audio. I also just disabled ReadyBoost (which I also got recently).  I killed PeerBlock and uTorrent, and this still continues to happen; previously, killing them was enough to get my CPU back down to ~0%.  My CPU temperature is ~55 C and my HDD is at &lt;40 C.      So it is uTorrent's fault (or PeerBlock or Comodo).
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When you undervolt or overlock an CPU, when it passes a certain limit it starts to make the system unstable, reboot, etc. But these are the effects of it.  What I'm curious about is what happens on the CPU. What happens? It gives wrong answers to instructions? Bits on cache flip?
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I got me a nice new laptop and I want to know a bit more about the hardware.  How can I see how many CPUs my computer has in Windows&nbsp;7?  (Note: Clicking on Start → right clicking on Computer → selecting properties shows me the processor type, but it does not say anything about the core count.)
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We are beginning to provision a set of physical servers for a virtual cluster of SQL Server 2016 nodes within VMware. We will be utilizing Enterprise Edition licenses.  We plan on setting up 6 nodes, but there is a bit of a debate on what the ideal way to provision the physical servers with regards to CPU clock speed versus CPU core count.  I know this is largely dependent on transaction volume and number of databases stored among other software-specific factors, but is there a general rule of thumb that is advised?  For instance, is a dual 8-core, 3.2 GHz physical server (16 cores) more preferential to a dual 16-core, 2.6 GHz server (32 cores)?  Has anyone come across a white paper that further delves into this type of topic?
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We're about to install a memory intensive application and will purchase a server for it.  The server will have at least 4 CPUs, with multiple cores. While the application is memory intensive, the consultants we're speaking with said that 32GB should be sufficient.  They also said that if I add more memory than that, the server will slow down because of the "extra wiring" to connect all of the memory.  I'm not planning on putting VMs on the hardware so I don't need extra memory to partition for virtual machines.  However I am concerned that 32GB may not be enough.  Does the consultant's assertion that more memory than I need will slow the machine down correct?
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I have two desktops (one of which I'm using as a server), my main machine has a weaker i5 cpu, my server has a stronger i7 cpu. On my main machine I am experiencing stutters because the CPU often runs at full load under regular use (strangely, I also use upwards of 10GB of RAM, no joke... The heaviest program I'm running is google chrome).  I was wondering if there was any possible way to share a cpu from one machine over network to another machine as an emulated processor, which could be used by the client machine in a similar sort of fashion as virtual machines use or "borrow" their host's cpu.  This way I could offload work onto the server's cpu when the main cpu is under full load to prevent annoyances like stutter, and possibly combine both of them for more intense tasks (like decryption, compilation, archiving or other multithreaded stuff)  Does this sort of software exist, or has anyone at least tried to make it? If not, is it feasible?  (This sort of program would also ideally be able to offload data onto the server's RAM for faster processing, since the now common gigabit connections get to have nearly the same speeds as a standard HDD this doesn't sound far fetched either)  To reiterate, what I am primarily looking for is the ability to offload work from a system's main cpu when it is under too much load and forwarding it to another computer's cpu over network.
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I want to compare (not precisely, no accurate benchmarking, just the big picture) two CPUs, the one of my main gaming PC (built in Feb 2011) and the one of my newest PC (built last week).  One has an Intel Core i7 870 and the other has an Intel Core i7 3630QM.  One would think that the new one would destroy the other or at least show a noticable difference, and I am only taking about their specifications, not even in practice! and it is not that obvious...  I mean when looking at the specs, the frequencies look close, the number of cores is the same, I mean what in the specs make one of those CPUs better that the other...  Comparing CPUs used to be way easier back in my days ;)
18488
Currently I have a web app running where I have 9 VPS servers connected to a Load Balancer. As my web app has been getting traffic, I've been purchasing new VPSs to handle the load. Managing so many of them is pretty annoying and I don't really have time to learn Puppet/Chef.   I am wondering, would I get more output if I purchase say 2 high end dedicated servers assuming that my Ubuntu/Apache config would be cloned over to them? Is there any way to estimate the gains/loses in hit/sec that I would get? Right now most of my VPSs are 8GB ram with low CPU priority.   This is my level of volume right now:   Often times I have spikes of up to 2k/sec. My VPS system seems to cap at around ~850/sec.  Would going dedicated by the next logical step?
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We are studying implementing some virtualized servers here, but we don't know what will be better suitable for us. Some folks are saying better have two huge servers, and others are saying have like a ten middle-end servers.  We have a legacy Visual Foxpro application, which nowadays run on Dual Xeon E5405 @ 2GHz and 16Gb of RAM. The currently server its getting too slow due the number of active users and process running on it. Virtualizing this server will give us the benefit of an faster disaster recovery.  So the question is, having like ten physical servers running at 1.7GHz and 4Gb of RAM, we could virtualize one server into 4 machines, and have one virtualized server running at 6.8GHz and 16Gb of memory? If yes, there is some how if one machine stops, automatically manage this virtual machine to another one, and execute the appropriate maintenance on it, and later back to it again?
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Is there any tool that helps to determine the weakest link of my current laptop hardware specification? Any online guide to help me choose nice balanced configuration for the new laptop?    I need to find the answers:  a) which component should be invested to increase overall performance the most? CPU? GPU? RAM?  b) which component may decrease overall performance and work as a bottleneck for the specific configuration?    The question is general and regards both to validating the current hardware usage (and its possible bottlenecks) and estimating the performance (and avoiding possible issues) of specs I'm going to choose and buy.    P.S. For the specific laptop I need to replace, the following software will be in use:    Windows antivirus, firewall, dropbox service running in the background mail app + web browser with a dozen or so tabs open from time to time: libreoffice apps, movies, games (both online and installed).
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Here are a few questions, I wish you could enlighten me.   Is it possible to combine processing power of 2 computers? How do I do it?
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What are the pros and cons of controlling (lowering, or even overclocking) the CPU frequency on a laptop? How can I do it in Ubuntu and will it increase my battery life (as I never play games and stuff)  And do fan speed and CPU frequency have any correlation?