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• How do I calculate clock speed in multi-core processors?

  - by NReilingh

  Is it correct to say, for example, that a processor with four cores each running at 3GHz is in fact a processor running at 12GHz? I once got into a "Mac vs. PC" argument (which by the way is NOT the focus of this topic... that was back in middle school) with an acquaintance who insisted that Macs were only being advertised as 1Ghz machines because they were dual-processor G4s each running at 500MHz. At the time I knew this to be hogwash for reasons I think are apparent to most people, but I just saw a comment on this website to the effect of "6 cores x 0.2GHz = 1.2Ghz" and that got me thinking again about whether there's a real answer to this. So, this is a more-or-less philosophical/deep technical question about the semantics of clock speed calculation. I see two possibilities: Each core is in fact doing x calculations per second, thus the total number of calculations is x(cores). Clock speed is rather a count of the number of cycles the processor goes through in the space of a second, so as long as all cores are running at the same speed, the speed of each clock cycle stays the same no matter how many cores exist. In other words, Hz = (core1Hz+core2Hz+...)/cores.

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• Is the Intel Core i5 mobile processor better than the Intel Core i7 mobile processor?

  - by Tim Barnaski

  I'm shopping for a new laptop from Dell (going to install Ubuntu on it) and I'm currently trying to sort out which processor I want. Based purely on the clock speed, it would seem that the core i5 is better than the core i7. The Intel® Core™ i5-430M has a 2.26GHz clock speed, while the Intel® Core™ i7-720QM Quad Core Processor only has a 1.6GHz clock speed. Would this not indicate that the i5 is faster than the i7?

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• Processor with higher FSB than motherboard can support.

  - by Wesley

  Hi all, Please redirect me if there is a similar question, but I have an ECS P4VXASD2+ (V5.0) motherboard, which supports a 533 MHz FSB. I want to put in a Pentium 4 3.2 GHz processor (Socket 478) with an FSB of 800 MHz. Would this be possible? Would the FSB of the processor just be limited to 533 MHz? Thanks in advance.

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• Relationship between RAM & processor speed

  - by deostroll

  RAM is just used for temporary storage. But since this storage is in the cpu memory (RAM) it is fast. Programs can easily read/write values into it. I've noticed more the RAM less time it takes for the application to load/execute. But doesn't this actually depend of the processor speed (MHz or GHz values). I am wondering what is the science/relationship between processor speed and RAM.

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• Processor with higher FSB than motherboard can support.

  - by Wesley

  Hi all, Please redirect me if there is a similar question, but I have an ECS P4VXASD2+ (V5.0) motherboard, which supports a 533 MHz FSB. I want to put in a Pentium 4 3.2 GHz processor (Socket 478) with an FSB of 800 MHz. Would this be possible? Would the FSB of the processor just be limited to 533 MHz? Thanks in advance.

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• Good light debian derivates-distro for VIA C3 processor

  - by stighy

  Hi, i would like to install a good distro on a VIA C3 Samuel system. It would be a light server (with a graphical environment) useful for print server, file server etc. I've tried to install crunchbang linux but it tell me that my processor not support cx8 and cmov instructions. So i'm trying Knoppix.. but i still have some problem ... Do you know other good lightweight distro debian derivates that support via c3 processor ? Thanks

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• In a Virtual Machine, is the Virtual Processor using RAM or part of the Processor?

  - by Jason H

  I am running a 15" MacBook Pro (2.66GHz) and 4GB of RAM. I am considering downgrading to a 13 MacBook Pro (2.4GHz) with 8GB of RAM. Most of what I do at work is through Windows and I need to run it virtually. So my real question is when running a virtual machine will the virtual processor be utilizing RAM or part of the hosts processor? My assumption is that it will utilize the allocated RAM but I have seen zero documentation to support that.

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• run a 2nd computer as an extra processor

  - by MMK

  I have a laptop with a busted l.c.d., but otherwise works fine with an external monitor. I was wondering if it is possible to connect it to my main pc as an extra processor(main pc is getting old, it's only single core processor) and if so how? I currently have them connected with a network cable so that I can access the laptop's hard drive but would like to use it to give my pc a bit more power. Both my pc and my laptop have 2 gb ram and are running windows vista sp2

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• Problem with xvideoservice thief

  - by Nrew

  Xvideo service thief is an application that allows you to download and convert youtube videos into .avi format. The problem is when it tries to convert the .flv into a .avi. The audio in the video is not being played when you try to play the video. But the .flv works fine. I have also enabled Intel(R) speedstep feature in my processor(Pentium Dual core E5200) to decrease the power consumed by the processor with the help of Granola software. What might be the reason for the audio less video converter by xvideo service thief? Could it be the enabling of intel(R) speedstep? Because the software works fine when its not enabled. Is this possible?That the output some applications can be altered when enabling this processor feature?

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• Upgrading from single core to dual core - Will throughput get doubled ?

  - by S.Man

  If i replace a single-core processor with a dual-core processor, Will it increase the throughput by two times ? If No, why throughput does not get doubled ?

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• Why does Ubuntu (and other ubuntu based distros like lubuntu and linux mint) randomly shutdown on my laptop?

  - by Imran

  I have a lenovo g555 laptop and whenever I try and boot a ubuntu based distro off a usb, it randomly shuts off my PC (Not like a normal shutdown with shutdown loading screen but a like a sudden hard power off). This problem occurs even if I have installed the distro on my harddrive. In the past I've been able to use the distro for 10 min or so before it would it would do this. Now with the latest distros, It randomly pwers off even before it has fully booted up. My hardware specs are on this website.

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• How can I troubleshoot flash player/hardware conflict?

  - by sparthikas

  OBJECTIVE: Have a web browser on my Ubuntu install that can play youtube and hulu videos. Also would like to understand problem so that I can fix it again if I change software. Workarounds welcome, technical understanding and solution preferable. SYMPTOMS: Flash does not run - cannot make the right-click menu appear, an empty box is where video should be, changes to black box when hovering over other links. The "The Adobe Flash plugin has crashed" message does not appear with its sad lego face. cannot activate proprietary graphics driver - causes system to reboot to a prompt. SOLUTIONS TRIED: Replaced OS (tried slackware 13.37, fedora 17, linuxmint 13 maya, gentoo, lubuntu, and even winXP. lubuntu confirmed to work, don't remember how much tweaking, if any, this required. Slack, fedora, mint, and gentoo all failed to run flash just like ubuntu) many reinstalls of flash player via different methods, including cleaning up old installs first, also tried gnash and lightspark. replaced graphics card (replaced HIS IceQ Radeon HD 4670 AGP with older GeForce 5700 LE no change in problem) flash does successfully work on winXP installation with Catalyst AGP hotfix driver applied, however I consider windows wholly unacceptable for web browsing due to lack of security. Lubuntu install also works, however I do not want to be tied down to just using Lubuntu on this computer. SYSINFO: Have latest versions of Ubuntu, Firefox, and Flash on fresh Ubuntu install. Using Gigabyte 7s748 motherboard with Athlon XP 2800+ and 3 GB of RAM with Radeon HD 4670 AGP card, also a Dell soundblaster live series sound card (due to malfunction of onboard sound on motherboard) Wired internet connection, Maxtor 6Y120L3 HDD, Sony DVD RW AW-Q170A, Dell M993s monitor. NOTES: I do not know if the graphics driver issue and the flash troubles are linked. Substitution of older graphics card having same flash troubles seems to suggest they aren't. My troubleshooting method is rather reductionist, consisting mainly of "replace things until you find out what was causing the error by process of elimination" only it seems that this must be a conflict which arises when software decides how to configure itself on my hardware. That is, I know the hardware can run Flash, and I know that on other systems the same software can too, but somehow the combination fails. Consequently I feel out of my depth. I will keep trying things off and on, but I have spent probably about 30 man-hours in the last 4 months working on this problem with no joy other than the lubuntu workaround. Any help will be appreciated, I will be checking back and posting updates. Any pertinent questions regarding me or my computer will be answered, outputs from config files can be accessed and posted (IDK which ones or what parts to post).

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• mpirun -np N, what if N is larger than my core number?

  - by Daniel

  Say I have a 4-core workstation, what would linux (Ubuntu) do if I execute mpirun -np 9 XXX Q1. Will 9 run immediately together, or they will run 4 after 4? Q2. I suppose that using 9 is not good, because the remainder 1, it will make the computer confused, (I don't know is it going to be confused at all, or the "head" of the computer will decide which core among the 4 cores will be used?) Or it will be randomly picked. Who decide which one core to call? Q3. If I feel my cpu is not bad and my ram is okay and large enough, and my case is not very big. Is it a good idea in order to fully use my cpu and ram, that I do mpirun -np 8 XXX, or even mpirun -np 12 XXX. Q4. Who decides all of these effciency optimization, Ubuntu, or linux, or motherboard or cpu? Your enlightenment would be really appreciated.

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• Core Parking in Ubuntu?

  - by Xxx Xxx

  Core parking is a new feature that introduced in Windows 7 to get better Battery performance . Depending on the resource use of the operating system it may park one or multiple cores of a multi-core cpu to reduce the computer’s power consumption and thermal emissions. Once operations require more processing power, the parked cores are activated again to assist in the tasks So my question is that is there any way i can do it on Ubuntu 12.04 " Core Parking " ?

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• How to fetch processor CPU flags in .net ?

  - by Kushal Waikar

  How to fetch processor CPU flags in .net ?

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• Processor affinity settings for Linux kernel modules?

  - by Stephen Pape

  In Windows, I can set the processor affinity of driver code using KeSetSystemAffinityThread, and check which processor my code is running on using KeGetCurrentProcessorNumber. I'm trying to do something similar in a Linux kernel module, but the only affinity calls I can see are for userland processes. Is there any way to do this, so that I can run assembly code on a specific processor? (i.e. sgdt)

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• cpufreq not available 11.10

  - by code shogan

  on 11.04 I had cpufreq working on my "AMD Turion(tm) 64 X2 Mobile Technology TL-50 stepping 02" processors, however now on oneiric cpufreq won't load. The core temperature of my cpu is normally 40 c, but lately it's cooking away at 75-80+ c and the fan is always extremely loud even when cpu usage has at 0.4%. and after this dmesg | grep -i cpu I got: Brought up 2 CPUs Switch to broadcast mode on CPU1 Switch to broadcast mode on CPU0 Switched to NOHz mode on CPU #1 Switched to NOHz mode on CPU #0 ACPI: acpi_idle registered with cpuidle cpufreq-nforce2: No nForce2 chipset. cpuidle: using governor ladder cpuidle: using governor menu powernow-k8: Found 1 AMD Turion(tm) 64 X2 Mobile Technology TL-50 (2 cpu cores) (version 2.20.00) I see something about governors and ladder there, does this mean the OS is able to scale my cpu's or not? If so is there a way I can determine it's working? I saw that for other users that the wrong module had been loaded and by disabling it they were able to get cpufreq loaded. How can I tell what scaling module is loaded? stats: Ubuntu Oneiric 32bit Dell Inspiron 1501

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• How much powerful processor is required while downlaoding data from a high speed internet connection

  - by avanish

  Hello, I was just wondering about the use of a processor while downloading any data (say for example a movie) from internet. Can anyone tell me, how much a processor is really in use while downloading and in first place is a processor really required during download.

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• My Intel Core i3 frequently shuts down due to "Processor Thermal Trip error"

  - by explorest

  My Desktop PC running Windows 7 on Intel Core i3 dual processor machine started shutting down during the boot process a couple of days ago. I left it alone for about 48 hours and tried again. The boot process informed me about Processor Thermal Trip as being the cause of boot failures and suggested a Windows recovery process. I went through the recovery process which completed without problems. The PC booted normally and Windows 7 worked as expected but after 10 minutes it again tripped and now whenever I start it, it shuts down during the boot process. What should I do next?... is there a boot menu / setup settings that needs to be adjusted to avoid it... Or is there a hardware problem (which seems unlikely as the machine occasionally boots perfectly )?

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• Which is a faster processor?

  - by Absolute0

  Which is a faster ("better") processor the Intel Core i5-750 or the AMD Phenom II X4 965?

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• processor upgrade

  - by Bill

  Can a Core2 quad processor,be a direct replacement for a Core2 duo given same socket arrangement.

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• Motherboard or Processor Problem

  - by bradlis7

  My computer is broken, but I'm having trouble narrowing down the issue. I replaced the power supply, because I assumed that was the issue, but it has the same problem. The issue started with my computer starting the fans and running, but it didn't get to the BIOS screen for about 10 seconds. Now it refuses to do anything when the power button is pressed, except when I turn off the machine and take the processor out for 10-20 seconds, then put it back in, I came hit the power button immediately, and the fans start for 1/2 second, and quit. Does this sound like a is a processor or motherboard issue? I removed all components, so I know that the issue is with one of these two things.

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• Proper approach to debug PC startup problems (POST)

  - by saurabhj

  My CPU was heating up to around 65 deg C and last time this had happened (about a year ago), I got thermal paste put between the CPU and heat sink and this managed to get it down to about 45 - 50 degrees. This time, I got some thermal paste and put it myself. However, my PC is not showing the POST display and not starting up. This is what happens LEDs light up HDDs spin Mouse is getting power All fans including the processor fan starts No display on monitor No diagnostic beep sounds (no sounds at all) What I have tried Removing everything including RAM, HDD, PCI cards, AGP card Boot up machine No changes from first state. What steps can I take to figure out where the problem lies? Note (might be important) When I removed the heat sink, the processor came out with it (it was stuck to it inspite of the processor latch on) Had to pry it separate with a screw-driver. Configuration Pentium 4, 2.8 Ghz with HT (very old, I know) Original Intel Mobo with onboard sound and graphics (GB series) 2x512 Mb DDR-RAM 2 SATA disks (320 Gigs / 250 gigs) DVD Writer Creative Sound Card Network card Any help would be appreciated. Thanks!

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• AMD processors witn graphics card bundled [closed]

  - by shybovycha

  Sorry for posting this question here - just don't know to which StackExchange website i should be writing. I've heard AMD created processors with video card bundled. So now these processors should work as fast as just usual processors with discrete video card but AMD's ones should use less power and spread less warm. Some googling around gave me the result like "AMD processors of A-series". They were mentioned to be build using that technology i described above. But on the other hand, we have a small rate of publishing and not-very-good quality of AMD drivers. I am a game-developer and web-developer so i need a powerful processor and graphics card and a lot of RAM on board (to make it possible to create a sample Grails application, for example or to create some 3D models in Maya/Cinema4D, for instance). Still i want my battery to be a long-living one, so power usage is a bit critical for me. So, my questions are: are there any processor building technology like i've described and which series they are (if they exist)? which processor shall fit the laptop the best: AMD one or i5/i7 on with nVidia graphics card for the purposes mentioned above?

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• Perfmon % Processor Time vs. task manager's CPU usage

  - by nat

  I'm new to using Perfmon and performance monitoring in general (so go easy on me please ;) I know that Perfmon doesn't have anything exactly like Task Manager's CPU usage display, but I'm trying to figure out how to monitor user's CPU usage via Perfmon in a similar way, and trying to understand the measurements (or how to convert the numbers to get a similar understanding) For example, if in Task Manager, a particular user is consistently using more than 5% CPU, I would want to contact the user about it. I learn best by example, so here is exactly what I'm trying to do, with a specific example: This is for a 32-bit Dual Quad Core Windows 2003 web server (8 CPUs), there are many web sites on the server, each running within their own application pool/worker process ID. Through other research here I learned of a registry change that I made so that the PID shows up with the w3wp process so I can easily identify the site later by cross-referencing it. I set up a counter with the following settings: Process -> % Processor Time -> all instances Here is an example. Say I'm interested in "black line" user in this graph below, as his process is spiking quite high compared to all the other users: (I wasn't allowed to post the image as I'm a new user on this site.. I've uploaded the image to:) http://i35.tinypic.com/106yn8k.jpg So... using this as an example, I see that they have an AVERAGE % PROCESSOR TIME of 23.264 , and have spiked as high as 103.124 So what exactly does this 23.264 number mean to me? Is it similar to an average of Task Manager's CPU reading for this user? Or, since this server has 8 CPUs, should I divide this number by 8? (23.264/8 = 2.9% AVERAGE CPU LOAD?) Thanks in advance.

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