Ubuntu :: Do CPUs Cut Procceses In Half?
Aug 1, 20111.What is a time slice?
2.Do CPUs cut procceses in half? When is a process stopped for another to take place?
1.What is a time slice?
2.Do CPUs cut procceses in half? When is a process stopped for another to take place?
I just upgraded from 9.04 to 10.04 and so far I have those problems:
1. Before, everything in my system was in English. Now, half is in English, half in another language (PCManFM, some menus etc). I tried setting up Language Support but it changes nothing.
2. Cursor themes work only when hovering the mouse over "X" buttons in the right top corner of the window. As soon as I move the mouse somewhere else, it goes back to default cursor theme, even though I tried selecting 5 different themes - same result.
4. Hibernation don't work anymore. s2disk saves image to disk and then it resumes it but computer stops on text message along the lines of "Resume completed successfully".
5. Changing volume with keyboard shotcuts no longer works.
6. Smplayer does not display picture anymore when playing movies. The view is just empty. I can only hear the soundtrack. It is using XV filter.
7. PCmanFM that used to worked flawlessly, now after going into 1 or 2 subdirectories stops reacting to clicks on file/folder list. Need to open new instance to be able to do anything and this again would become unusable after visiting 1-2 folders.
I'm not sure if this is the right place for this. I'm not sure which veraion of linux I have but it was the latest veraon bfor the recent update. I accidentally hit alt ctrl f11 and my comp went inyo the grub menu. I've tried startx and it does nothing. About half the commands I enter do nothing and the other half r not found or are incorrect. The only vommand thw actualley work is reboot. I searched for this and read a grub guide but it did no good.
View 4 Replies View RelatedI'm looking for a CPU frequency applet which monitors the frequency of ALL CPUs at once.
Does it exist such applet?
I have just purchased an AMD Phenom II 1055T 6 Core CPU to replace my aging CPU. The problem is only 1 core is visible to Ubuntu, Does it actually support 6 cores?
View 7 Replies View RelatedMy setup:
HP XW8200
2x 3600MHz Xeon CPUs
4GB RAM
Quadro FX3800 PCIe graphics
Dual boot Ubuntu 10.10 32bit (primary use) and XP (gaming use only)
The issue I have is that the CPUs seem to run at 100% constantly in Ubuntu meaning that the CPU fans are constantly at high. This makes the machine sound like a wind tunnel!
It is nice and quiet in XP.
I installed GKrellM monitor which is what is telling me about the 100% CPU useage.
Would using the 64bit Ubuntu make any difference? (dont really want to reinstall tbh)
I'm using Ubuntu 10.04 x64, and I have an AMD Phenom 2 x4 940 CPU. First I have to underline that four cores worked perfectly in previous versions of Ubuntu as well as Windows.
When looking at system monitor it tells me that I have two CPUs/Cores, it should be four.
This is the output of CPU info:
Code:
processor: 0
vendor_id: AuthenticAMD
cpu family: 16
model: 4
[Code].....
I'm buying a new fanless desktop unit with 2 x 1.66GHz Intel Atom D510 CPUs. The vendor calls these a '64-bit processor'. But the unit has just 4Gb of memory and I don't want the fuss of 64-bit for the basic stuff I do. So I asked them to load Lucid-32.
Will the processors work with 32-bit?
The vendor tells me 32-bit won't make full use of the 4GB, only three and a half, but all else will be fine. So they'll load 32 and I'll try a live DVD of 64 in my own time. But I thought 32 bit was fine up to and including 4GB of memory?
I have an i7 980x (hexacore) machine, installed with ubuntu 10.04. Has the stock 2.6.28-15-server #52-Ubuntu SMP kernel. When I check my /proc/cpuinfo, I can see only 8 CPUs. Was expecting to see 12. Is there any way to get all my 12 CPUs.
View 1 Replies View RelatedI've got some weird stuff going on with my F14 setup, I seem to be getting loads of CPU activity with nothing happening! Both CPUs are running about 60% as soon as I log in to my normal account. If I log into another account it drops to about 15%. Sometimes when I log out I get a message saying that 'an unknown process' is still running. Looking at processes it is not apparent what is causing this as nothing is using that much CPU. It does show some processes with no name, which seem to come and go and change ID. The only things I've installed recently are dropbox and myth tv. I've removed dropbox but no change. how I can find out where my CPU time is going!
View 3 Replies View RelatedI have a high resolution file (1080p) encoded with H.264 and when I play it back, it lags at certain parts (and enough parts to destroy the job of watching the video).
I don't think that my computer is that crappy and it has been able to play many H.264 encoded files with high resolution - so there is always a possibility that this file is just encoded poorly (lacking a better computer, I cannot test).
For information, I'm running Ubuntu 9.10 64 bit. I have a Intel Core2 Quad CPU Q9550 (@2.83 GHz). I have 8 GB of RAM (forgot the speed off the top of my head). And a Nvidia GeForce GTX 280 (1 GB of memory).
During the playback, the RAM is far from being completely used; however, it seems that one (and only one) of the cores of my CPU becomes saturated at 100% precisely at the moments in which the file lags. When the CPU utilization is below 100%, there is smooth playback.
My question is - is it possible to use all four cores during playback, or is such a process not capable of easy parallel processing.
Another side question is, how can I be sure that my GPU is being used in the decoding process - or is that also being under-utilized?
Not so long time ago I have installed Centos 5.3 on my AMD Phenom II X4 server (I am hosting game servers on it). Only today I noticed, that cpuinfo shows me only two CPUs. I watched for the info in the dmesg and found there that the system boots up only 2CPUs.
Here is some info from the dmesg:
Quote:
Linux version 2.6.18-164.11.1.el5 (mockbuild@builder10.centos.org) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-46)) #1 SMP Wed Jan 20 07:32:21 EST 2010
Command line: ro root=/dev/VolGroup00/LogVol00
ACPI: Local APIC address 0xfee00000
[Code]....
Am I correctly understand that something wrong in BIOS? Or it is something else?
Not so long time ago I have installed Centos 5.3 on my AMD Phenom II X4 server (I am hosting game servers on it). Only today I noticed, that cpuinfo shows me only two CPUs. I watched for the info in the dmesg and found there that the system boots up only 2CPUs.Here is some info from the dmesg:
Linux version 2.6.18-164.11.1.el5 (gcc version 4.1.2 20080704 (Red Hat 4.1.2-46)) #1 SMP Wed Jan 20 07:32:21 EST 2010
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
Processor #0 0:4 APIC version 16
[code].....
I have fresh install of Ubuntu 10.04 LTS Added Wine from Software Center but have no any Win apps loaded or running yet. I have also enabled visual Effects and the system installed and enabled NVidia's driver for the video-card after which the picture quality improved.
Here is the screen of my CPU monitor (sorry labels arre in Russian but the charts are quite intuitive) As you can see this 100% load "jumps" from one core to another periodically. On the Processes tab there is nothing fancy:
Less than 10% processes load. I have tried to play with CPU Clock Gnome widget, it doesn't really change the picture whether I use MAX CPU clock of 2Ghz or reduced power-saving 1,2 GHz. I have found couple similar cases on forum but see no solution so far.BTW, I have already launched the update manager and currently Ubuntu does not offer any new updates.
[code]....
PS. In the attachement - Report of some built in System Diag Tool
I'm using bioinformatics programs i run from console on my system or on the server and some of them don't have a option for use multiple cores/cpus.There's a way to force it? some programs have to run for days and use a single core...
View 1 Replies View RelatedI've got a Toshiba Satellite L655D-S5109 and the gnome cpu temp applet only shows 3 cpu's. Its a dual core AMD Turion II - I would have expected 4 cpu in the temp applet.
View 5 Replies View RelatedWhen running cat /proc/cpuinfo under Linux, a variety information is kicked-back. For example:
> cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Xeon(R) CPU 5130 @ 2.00GHz
[Code]...
First, what does all of that actually mean? I see I have a processor 0 and processor 1. Does that mean Linux is reporting both cores of the CPU, or, since it is a VM, the two that I happen to have right now (even if they're on physically different CPUs)?
Second, how can I get a similar information dump form the command line in Windows? Third, is there a way using either platform to determine the number of physical CPUs versus total CPU cores?
While searching for the maximum numbers of CPUs supported by CentOS 5 x86_64 I found the following page: [URL]. The question I have regarding the specified information ("64/255" logical CPUs) is, which number means what. Does this mean 64 real CPUs with a maximum of 255 cores/hyperthreaded CPUs or something similar or totally different?
View 4 Replies View RelatedWhile searching for the maximum numbers of CPUs supported by CentOS 5 x86_64 I found the following page: [URL] The question I have regarding the specified information ("64/255" logical CPUs) is, which number means what. Does this mean 64 real CPUs with a maximum of 255 cores/hyperthreaded CPUs or something similar or totally different?
View 9 Replies View RelatedI am somewhat familiar with SGE (Sun Grid Engine, now Oracle Grid Engine) commands but am having a problem when running parallel jobs.
Present Machine configuration:
machine I - 12 cpus
machine II - 12 cpus
machine III - 12 cpus
.... so on ...
One_machine - 16 cpus
(I have all machine of 12 cpus and 1 machine having 16 cpus)
I want to schedule jobs on these machine such that if I ask for 12 cpus - my jobs should execute on any of the machines which has all 12 free cpus (eg machine I or machine II) in this case.
Eg. suppose I ask for 24 cpus
Option I : 12@machine1 12@machine2 ----- I need this
Options II : 10@machin1 10@machine2 4@machine3 ---- I don't need such a distribution
Hence, Option I is ideal here. Also, when running 12 jobs on machine1 (say) - even if all 12 cpus are not being used at some instance of time, none of the 12 cpus should be freed.
In short, until my run finishes, all blocked cpus should remain blocked.
If you may understand, the purpose here is to run some performance tests.
I'm using 'qrsh' to launch jobs.
I have a OpenSuse Linux system that needs to use only one core of its four core processor. I tried putting this in the menu.lst file.
###Don't change this comment - YaST2 identifier: Original name: linux###
title openSUSE 10.3
root (hd0,1)
[code].....
Am I placing the nosmp and maxcpus options in the proper location?
I am quite new to this ubuntu business, but i like what I'm seeing so far. Well, almost everything that I'm seeing. I seem to have run into a tricky problem with xubuntu 10.04. I was in the process of customizing my desktop appearance (via Xfce4 Settings manager), and I found a nice theme to go with (dusk I think it was called). I then went on to change the window settings and starting from the bottom most option I browsed the various styles. After a few of these my computer decided to log me out quite suddenly, and I was prompted to login.
This is where the problem is: I type in my password and it logs me in for maybe a half a second only to log me out again. No matter how many times I put in the password I keep getting logged out. So now I'm running xubuntu 10.04 off a pendrive that was used in its initial installation. Is there any way to log back in and stay logged in long enough to undo the window styling at fault? I had put in quite a bit of work migrating files, installing all sorts of things and setting up fancy launchers, and I would prefer not to have to redo it again.
I have a machine currently running Debian Lenny on which I would like to run Ubuntu for the driver support in its newer kernel. However, I did a test boot from the installation CD and it appears to be running at less than half its rated speed. This is the output from the Debian kernel:
brendand@kant:~$ uname -a
Linux kant 2.6.26-2-amd64 #1 SMP Wed May 12 18:03:14 UTC 2010 x86_64 GNU/Linux
brendand@kant:~$ cat /proc/cpuinfo
processor: 0
[Code].....
Maybe this is some sort of power save bug where the CPU speed is incorrectly scaled back. Has anyone else encountered this problem? Should I report it as a bug, and, if so, how do I do that?
so i have a data file of a couple thousand lines. for example, my file will look like this (condensed of course):
Code:
something something 100 something 1 2 3
something something 101 something 4 5 6
[code]....
I have 2x 1TB drives:
Code:
But when I check
Code:
I only have 914G space...
Finally got around to buying a DVD player so i put 3 old Clint Eastwood spaghetti westerns on one dvd and it plays fine on the computer. However , when played on the tv-dvd player only one movie ( the last one on the dvd ) would play . I did not use a 3rd party converter app as the dvd player advertised that it would play standard avi movies. I burned with Brassero and noted that half the dvd was still blank if that's relative .
View 2 Replies View RelatedI'm clearly missing something small. My Ubuntu machine can see the XP machines in the WORKGROUP, pull files over and even print to the printer attached to one of them. Internet sharing also works. However, the XP machines cannot find the Ubuntu system.
View 1 Replies View RelatedHow do install wmctrl. The configure it to split the window's in half across the screen? So one window is half the screen and the other is the rest?
View 2 Replies View RelatedI recently upgraded from XP to Kubuntu, and I noticed that during partitioning (during installation) I could only partition 80GB out of the 160GB I should have.
Code:
df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 71G 2.8G 64G 5% /
none 719M 296K 718M 1% /dev
none 723M 0 723M 0% /dev/shm
none 723M 92K 723M 1% /var/run
none 723M 0 723M 0% /var/lock
none 723M 0 723M 0% /lib/init/rw
none 71G 2.8G 64G 5% /var/lib/ureadahead/debugfs
/dev/sdb1 7.1G 5.8G 964M 86% /media/disk
Code:
sudo fdisk -l | grep Disk
Disk /dev/sda: 80.0 GB, 80026361856 bytes
Disk identifier: 0x000ed7ef
Disk /dev/sdb: 8004 MB, 8004132864 bytes
Disk identifier: 0x000a154d
Also, at Grub there are several old Ubuntu selections from a previous install I did a long time ago; not the next oldest 1 or 2 Kubuntu versions, older Ubuntu versions.
My desktop has been shifted about half way to the right and a "black hole" has been left. I'm not sure how else to describe this, so I will include a picture to try to make things clearer:
I have no idea how I have done this. The Android SDK Emulator is the only thing I have downloaded and played with recently. I've checked monitor settings, changed the background image, adjusted the number of desktops (all desktops are affected), logged out & back in and rebooted. I'm not sure where else to look. Googling hasn't given me any more clues so far.
Everything else is working fine. Windows will open up normally and cover up the "black hole". Although they do leave an after-image, particularly when you move them around - like a 70s video clip!