General :: Difference Between CPU Core And Sockets?
Mar 26, 2010how to differentiate cores and sockets in CPU?
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General :: Difference Core And Thread In Processor?
Jun 1, 2011Can someone explain to me about the "core" and "thread" in the processor.
1. What is core?
2. What is thread?
3. What's the difference between core and thread?
Networking :: Limitof UDP Sockets We Can Bind At Same Time In Fedora Core X64 ?
Jan 18, 2011During the development of a java application appearantly found that cannot bind more than 500 UDP sockets at the same time.
The developed java application is running on Fedora Core (x64)
Is there some procedure to check how many sockets I can bind at the same time on that linux distribution?
In case the limit exists, can it be increased easily?
$ uname -a result is :
General :: Difference Between Fedora Core 4 And Fedora Core 14?
Jan 12, 2011I am in school for my CIS degree and the book I am using this session covers Windows XP and Fedora Core 4. I am having trouble finding & downloading Fedora Core 4. My question is: Is there a big enough difference between Fedora Core 4 and Fedora Core 14 that I would not be able to use 14 instead of 4?
View 14 Replies View RelatedHardware :: Difference Between Processor And Core?
Dec 22, 2010When i viewed the cpuinfo file (using command: vi /proc/cpuinfo ), i found that there are listings for 4 processors( i.e 4 sets of listings each one starting with item : processor - 0 ; processor -1 and so on..). Each of them have similar data among which one is "cpu cores" which is 2 for all.. How do i make sense of this data.. 4 processors with 2 cores each ? Also, what could be this hardware be classified as : dual core? quad core ?...
P.s: each of these processor listings also have an item called "siblings" which is 2 for all... Just thought i'll include this here because i felt it may be relevant to this question..
OpenSUSE :: Difference Between Core, Community And Playground?
Feb 17, 2010I've been thinking of going into opensuse for a long time and now with KDE 4.4 is finally out - I'm going to do it. The installation shouldn't be a problem but I wonder how I can upgrade to kde 4.4, since opensuse 11.2 will have 4.3 by default? I saw in the documentation to add these repos:
# Core packages: http://download.opensuse.org/reposit.../openSUSE_11.2
# Community: Index of /repositories/KDE:/KDE4:/Community/openSUSE_11.2_KDE4_Factory_Desktop
# Playground: Index of /repositories/KDE:/KDE4:/Playground/openSUSE_11.2_KDE4_Factory_Desktop
whats the difference between core, community and playground? And isnt there "stable" repos for the KDE 4.4 release? And are there a repo with amarok 2.3 Beta?
General :: Only One Core Of Dual Core Processor Are Working
Mar 14, 2011I recently read in a forum that by default the Linux kernel only activates one of two cores in a dual core processor. Searching online gave one option to find out and that was the mpstat command. I therefore ran the command and got the following output.As the result says, it shows only 1 cpu. I was wondering what I could do to activate both cores in my machine, and whether doing so was going to cause me any problems.
View 14 Replies View RelatedGeneral :: Processes And CPU 4-core - Which Core The Program Used?
Mar 26, 2011I've a program that launches new processes, and wait for them to die before it exits. So, for example, my program is a process, and it launches 3 more processes, and when the 3 child processes end, it will exit.
As you see, at end of the example, the program used a total number of 4 processes.
1 - Now, I'm running this program in a CPU with 4 cores. This means that the program used each core for each process?
2 - How can I know which core the program used?
General :: Using Netlink Sockets To Get MAC Address?
Jul 7, 2010I am trying to retrieve an interface's MAC address using netlink address. I got to a point, where I am able to parse the reply for 'RTM_GETLINK' till 'case IFLA_ADDRESS'. After that, I have no idea to print the MAC address.
View 1 Replies View RelatedGeneral :: (Netstat -a Command) Why Some Sockets Do Not Have Path Name
Oct 15, 2010When I run "netstat -a" commnand, it display:
Active UNIX domain sockets (servers and established)
Proto RefCnt Flags Type State I-Node Path
unix 2 [ ACC ] STREAM LISTENING 20269 /tmp/.gdm_socket
...
unix 2 [ ] DGRAM 997161
unix 3 [ ] STREAM CONNECTED 942628 /tmp/.X11-unix/X0
unix 3 [ ] STREAM CONNECTED 942627
unix 3 [ ] STREAM CONNECTED 942626 /tmp/.X11-unix/X0 ....
Why some socket don't have Path name? And what mean's RefCnt = 2?
General :: Setting Timeout Time For TCP Sockets?
Jun 8, 2011I have written simple TCP server-client programs in 'C' on my RHEL 5 64 bit.I want to add SEND and RECEIVE timeout for this socket; so that if server is not responding in given time, request will get timeout instead of waiting in "recv" call.But I failed to do so.
View 6 Replies View RelatedGeneral :: Force All Sockets To Close From The Command Line?
Sep 14, 2010How can I force all currently open sockets in linux to close from the command line?
View 2 Replies View RelatedGeneral :: One Server Many Client Chat Program Using Sockets
Aug 1, 2011I am trying to write a chat program with sockets as part of my project. I made a socket server, using fork ,I tried to connect it with different clients.Each client will send messages to others through server.So server has a shared memory storing every clients username and client id. But the problem facing is first client is able to sent messages to every other client formed after that.But second client onwards it is not able to sent message to previously connected ones. Server is not able to write on those client id's.
View 4 Replies View RelatedGeneral :: Starting And Stopping Apache / No Listening To Sockets Available, Shutting Down?
Sep 16, 2010I have just installed Ubuntu 10.04 and it works fine. Next, I attempted to install Apache 2.2.16 server on the machine. I was able to get Apache installed but I cant't get it to start. The command I used to get it to start is "apachectl -k start" and got the response "command not found". Then I used the absolute path which is "/home/Administrator/Downloads/apache/bin/apachectl -k start" and got the response"httpd: could not reliably determine ther server's fully qualified domain name, using 127.0.1.1 for ServerName(13)Permission denied: make_sock: could not bind to address 0.0.0.0:80.no listening to sockets available, shutting down". Please advise me on what to do. My eyes hurt from looking at the screen for so long trying different options and reading almost all the apache install instructions that exists. Just ready to have it up and running.
View 7 Replies View RelatedGeneral :: Netstat Command - Active Internet Connections / Domain Sockets?
Oct 12, 2010When I typed netstat -lna, the output:
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 0.0.0.0:580 0.0.0.0:* LISTEN
...
...
Active UNIX domain sockets (servers and established)
Proto RefCnt Flags Type State I-Node
unix 2 [ ACC ] STREAM LISTENING 23581
...
...
Can anyone explain to me:
1. What is "Active Internet connections" & "Active UNIX domain sockets"?
2. What is unix Proto?
3. Difference between LISTEN and LISTENING state.
Ubuntu :: Run Dual Core - Crash - Single Core Runs Perfect
Apr 1, 2011i am running gigabyte GA-M68M-S2P and AMD sempron 2.7. the problem is when i try to run dual core. it will boot and run for 2mins then it crashes. single core runs perfect.
View 6 Replies View RelatedFedora Installation :: Dual Core Only Showing Single Core On F14?
Nov 3, 2010I just loaded F14 on an old Dell Dimension 3000 with a dual core processor but only one is showing. Here's the output from top:
processor: 0
vendor_id: GenuineIntel
cpu family: 15
model: 4
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OpenSUSE :: Get Application To Utilize More Than One Core In Multi-core Setup?
Mar 27, 2011I have a command line OCR program called OCR Shop XTR (Vividata corp) that I am using on a system with a 6-core AMD chip. I changed the bios so that the 6-cores were activated, but htop shows me that while the program is running, I am only getting activity on one core (the program maxes out the one core with consistent usage between 97% and 100%).
I have read that many programs are not written to take advantage of multiple core cpu's. However, I am just hoping that there is some way to get this program to take advantage of the extra cores. Does anyone know of a way to invoke programs from the command line which would spread the workload out among additional cores?
Here is the output of uname -a:Linux linux 2.6.37.1-1.2-desktop #1 SMP PREEMPT 2011-02-21 10:34:10 +0100 i686 athlon i386 GNU/LinuxAnd here is the output for one of the cores from cat /proc/cpuinfo:processor : 5
vendor_id : AuthenticAMD
cpu family : 16
model : 10
model name : AMD Phenom(tm) II X6 1100T Processor
stepping : 0
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Ubuntu Installation :: Dual Core Support Core 2 E8500 Out Of Box?
Feb 14, 2010Just a quick question. Does Kubuntu Karmic support core 2 E8500 out of the box or do you need the SMP kernel?
View 3 Replies View RelatedProgramming :: Multi-core Support - Control On What Core Will A Thread Run
Oct 31, 2010Is there any Linux API that will let me control on what core will a thread run? If not, do I have to use assembly language?
View 2 Replies View RelatedDebian :: Wheezy Only Recognizes 1 Core Or Dual Core CPU?
Sep 7, 2011I have now installed Wheezy on two different hard drives and in each case it seems only one CPU of my dual core CPU computer is recognized. System Monitor, Gkrellm and lscpu show just one when prior to the new install the old Wheezy showed both CPU's. I have put the hard drive into two other computers with dual core CPU's and all show just one CPU.
Interestingly System Profiler and Benchmark (hardinfo?) > Devices > Processors now show a large amount of processor infomation when with the old Wheezy I would only see both CPU's listed and nothing else.
Ubuntu :: Lucid Lynx - Dual Core - One Core Always At 100%
May 15, 2010I've a Compaq CQ61 laptop, and i noticed that one of the cores is always at 100%.
I didn't check the duration of the battery but surely it will "eat" my battery in a hurry
Programming :: Get Process Running CPU Core And The Utilization On That Core?
Apr 27, 2010Assume someone bind a particular process to a particular CPU core(In multi core machine) by using sched_setaffinity() like functions. Then how we can get that process running core id and CPU core utilisation of that process on that running CPU core(Pragmatically or by a Linux command)?.
View 5 Replies View RelatedFedora Installation :: Upgrading From Core 4 To Core 10?
May 20, 2009I have created a virtual machine of a system running Fedora Core 4 and I need to upgrade it to Fedora Core 10. Based on what I have read, it iis possible so I started theupgrade process. I get an error message saying that /dev/hda6 (my root paritition does not exist) even though it does.
Does the installer need to read a label from /etc/fstab? I executed tune2fs -L / /dev/hda6 amd ,and added LABEL=/ for the corresponding entry for fstab. but the FEDORA CORE 10 is still giving the same problems for the installation process. Should I upgrade to an intermediate verson like Fedora Core 7 first?
Programming :: Core Dump Issues. Program Crashes But Does Not Generate Core Dump File?
Oct 7, 2009I want to generate core dump files from my program when it crashes. Its a pretty big process and has about 10-11 threads in it.I have followed the documentation to enable core dump by setting ulimit to unlimited etc. I quickly tried "A demo program creating a core dump" from the following webpage, which succeeds in Segfault and dumping a core file in the directory that I configured.However, I tried running my original program and caused it to crash. I did this by making calls to kill(), raise() or the same null pointer access as shown in the webpage above. In each case, my program crashed but did not generate a core dump file. Am I missing something?My program is in C++ and my environment is Redhat 9.0 (kernel 2.4.20)
Going through the "Why do I NOT get a core dump?" section on the same webpage as above, I can see two potential problems. One - there are issues with the suid/sgid (bullet # 6). I am not able to change any settings with suid because my system does not contain either /proc/sys/fs/suid_dumpable or /proc/sys/kernel/suid_dumpableTwo, my program has threads in it and the bullet # 8 is the problem.
CentOS 5 Hardware :: Infiniband (mlx4) Works On 16-core System But (now) Fails On 32-core System
Jan 27, 2010We have a small cluster of 20 HP systems, all running CentOS 5.3 in an NFS-root environment. Half are quad-socket, quad-core Xeon E7340 @ 2.40GHz (total 16 cores), the other half are 8-socket, quad-core Opteron 8354 (total 32 cores). All systems have a Mellanox Infiniband adapter ("Mellanox Technologies MT25418 [ConnectX VPI PCIe 2.0 2.5GT/s - IB DDR / 10GigE] (rev a0)")
With kernel 2.6.18-128.1.6.el5, infiniband works fine on all systems.
With the update to kernel 2.6.18-164.11.1.el5 (and both types of node running the same NFS-root image), the 16-core Xeons still work fine. Infiniband no longer works on the 32-core Opterons. Specifically, either the ib0 interface fails to appear, or it does appear but when configured with an IP address, doesn't actually work. In either case, loading the IB kernel modules takes a long time, but I haven't instrumented the load script yet to see which module, if any, is at fault. More errors listed below.
However, if I tweak the BIOS of the 32-core systems to reduce the per-socket core count to 2 (so effectively 8-socket, dual-core, down to a total of 16 available cores), Infiniband starts working again. Putting it back to 32-cores makes it fail. Booting the older kernel makes it work again. In summary: old kernel, IB works on all systems. Newer kernel, IB only works on 16-core systems.
Updating the IB firmware from 2.5.0 to 2.7.0 (latest available) doesn't help. I also did a full 'yum update' to make sure that libmlx4, openibd all other associated packages were up-to-date. Doesn't help either.
Some errors that appear on 32-core nodes:
ib_query_port failed (-16) for mlx4_0
ib_query_port failed (-16) for mlx4_0
mlx4_core 0000:04:00.0: SW2HW_MPT failed (-16)
mlx4_core 0000:04:00.0: SW2HW_MPT failed (-16)
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Ubuntu :: Only Single Core Active On Quad Core AMD When Acpi Is Active?
Jun 8, 2011Only Single core active on quad core AMD when acpi is active.with acpi=offuname -aLinux dvip4 2.6.32-30-server #59-Ubuntu SMP Tue Mar 1 22:46:09 UTC 2011 x86_64 GNU/Linux
Code:
cat /proc/cpuinfo
processor : 0
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Software :: Install Older Version Of Gcc 2.95.3 In Fedora Core 8 Or Fedora Core 12?
Mar 14, 2010i download the rpm package of gcc .
View 10 Replies View RelatedNetworking :: How Many Possible Sockets On 64-bit
Jan 24, 2011What's the total no. that the OS can create? Does this differ from 32-bit?
View 1 Replies View RelatedGeneral :: Run On One Core And Windows The Other?
Apr 20, 2010I know this is probably a totally ludicrous question, but is there a way to have Linux run on one processor and half the RAM in the background while Windows is in the foreground... and switch between them at will?
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