The multi-core tag has no wiki summary.
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1answer
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On Multiple Processors sytem, System load is high while most of CPUS are idle
See the following output of "top". Any idea?
top - 17:33:25 up 7 days, 28 min, 4 users, load average: 12.04, 8.35, 6.30
Tasks: 477 total, 2 running, 474 sleeping, 0 stopped, 1 zombie
Cpu0 ...
2
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1answer
106 views
CPU Throttling on Opteron 6272 in Windows
I'm in the process of attempting to benchmark a multithreaded application on my new HP Proliant Server which has an 2x Opteron 6272 and 64gb of ram.
When I run the application on a desktop machine (a ...
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2answers
139 views
VMware ESXi Virtual Machine configuration for hyperthreading
I have a Xeon E3-1230 processor, which has 4 physical cores, but has hyperthreading so an operating system running on it sees 8 logical cores.
I installed VMware ESXi and am creating virtual machines ...
1
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1answer
43 views
Assigning cores to VM in vSphere
Complete vSphere newbie here...
Background:
So, I have a 12 core machine with 24 VMs on it. Currently, all the processing power is shared between these VMs equally.
The question:
Can I configure ...
1
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2answers
113 views
Will all cores be used on an i7 when running SQL Server 2008 R2 Standard
I have a server with an Intel Core i7 processor (4 cores). If I view processor activity in Task Manager I see that there are 8 cores. I believe that this is because of hyperthreading (please correct ...
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3answers
68 views
How can I run command and select core to be used
I have a command to run (in this case is a php5 script) and I would like to know if there is something to run this command and select the core to be runed.
What I want to do is to run 1 command per ...
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4answers
217 views
How to force a process to run on a particular cpu?
I know that taskset can be used to force a process to run on a particular cpu.
How can I force tomcat to run on a particular CPU?
I then want to run apache bench on a seperate CPU.
Update
I ...
-3
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3answers
206 views
Why do I need six cores in a cpu for a server? [closed]
I was getting specs for dell server and one cpu is an Intel Xeon with 6 cores, another 4 cores. What am I getting with this? Do I need six cores? What does that give me? I don't know what ...
0
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1answer
119 views
Tomcat performing terribly for no apparent reason
We're running a game application .WAR on Tomcat 6 on an Amazon EC2 server, 8 core processor, 7gb RAM. The application uses a MySQL database hosted on Amazon RDS.
This Facebook application takes ages ...
1
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2answers
258 views
Hyperthreading on multicore processors - is it of any use? [closed]
I know hyperthreading from the time long ago where the processors used to have only a single core. The technology was really usefull then. Right now, Intel is still offering hyperthreading with 6-core ...
3
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2answers
81 views
Performance implications of CPU/cores ratio
With the recent widespread adoption of multi-core CPUs, a question comes to mind: how does CPU/cores ratio relate to performance?
Which of these is better, how and why?
1 8-core CPU
2 4-core CPUs
4 ...
1
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5answers
169 views
How can I move a process to a core or dedicate a process to a processor?
I have an Intel E5620 processor. I have used cat /proc/[pid]/stat to determine what processor the process was last run on (39th field). How can I ensure that a process is dedicated to a processor (I ...
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3answers
304 views
Setting up Apache to use multiple cores
Recently I have purchased a 6 core server which is running Ubuntu 10.04 and Apache. How do you set up apache to use all 6 cores and what is the best practice to do this?
Is it possible and if it is ...
4
votes
1answer
467 views
MySQL and Multi-Core processors
I'm running MySQL on win2008 server on a multi-core xeon processor.
It looks like it only uses a single core.
Is there something I need to configure to make it use all cores ?
The server is ...
2
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1answer
111 views
Q9650 vs. i7-870 for Server
One of our dedicated machines we use for hosting in London has exceeded the CPU usage, so I contacted the datacenter last week for a quote on an upgrade. We are hosting game servers, and most of these ...
2
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1answer
235 views
IIS 7.5 application pool CPU configuration
I have a web application that when runs on windows 2008 r2 data center edition and when the server is configured with a single core processor consumes 13 mb ram, when configured to run on dual core ...
1
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1answer
87 views
Java doesn't seem to utilize more than two cpus
In my current setup (debian squeeze x64, 6 cpus) neither java nor apache seem to utilitze the full potential of the server. The munin monitoring shows cpu usage never exceeds the 200% mark. We ran ...
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4answers
227 views
Free alternative to NI Real-Time Hypervisor?
Is there an free alternative to National Instruments' NI Real-Time Hypervisor? National Instruments provides both a Windows and Linux versions.
2
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2answers
173 views
How to find out if my debian server setup is a dual core or not?
I have access to root and would like to find out.
Thanks
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3answers
291 views
mpstat not showing all CPUs on CentOS 5.5 (64 bit)
I have two Quad Core XEON processors. When I run "mpstat" then it just shows combine figure of all CPUs like this:
12:16:44 AM CPU %user %nice %sys %iowait %irq %soft %steal %idle ...
1
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2answers
1k views
How to get Windows Server 2008 VM to use multiple cores
I have a Windows Server 2008 machine running in VirtualBox. On initial installation, only one processor was made available, but now I want to run it as a multiprocessor machine.
I have made all four ...
2
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4answers
777 views
rsync with multi-core server should go faster than it goes. Am I wrong?
I'm launching a rsync simple command between two servers. Both servers have two eth interfaces on bonding. When I send a big file from one server to the other with rsync I reach 130M/s transfer ...
1
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1answer
609 views
Many instances of sql express use all the same cpu?
Sql Server Express has the following major hardware limitations that has a consequence on performance:
1 CPU
1GB of memory
My question is: if on a multicore machine many instances of sql server ...
5
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4answers
442 views
need high performance /bin/sort; any suggestions?
Greetings,
I'm looking for a high performance /bin/sort drop in replacement. I know there is pbzip2 for using multiple cores, but is there a similar product for /bin/sort?
I've found distsort.sh, ...
3
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2answers
571 views
top in batch mode, need CPU% for every core
I know that after running top, I can press '1' and get a list of the CPUs with their utilization percentages. I suspect I can do this in batch mode too with the -b option, but I don't know how, and I ...
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2answers
691 views
Multicore license: ESX Vs Citrix Xenserver [closed]
Possible Duplicate:
Can you help me with my software licensing question?
VMware ESX is free for upto 6 cores per CPU only
Vsphere Advanced version is required for 12 CPU cores
does ...
1
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2answers
154 views
SQL server availability issue: large query stops other connections from connecting
I've got a high-spec (multicore, RAID) server running MS SQL 2008, with several databases on it. I have a low throughput process that periodically needs a small amount of information from one of the ...
2
votes
1answer
583 views
Can Windows 2008 64bit make use of a 6 core cpu?
There's a version of AMD Phenom CPU which is 6 cores. Would Windows 2008 64 bit & SQL Server 2008 64 bit make use of all the cores? Any special settings of the OS or sql server needed to benefit ...
2
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2answers
723 views
Running a VM on a hyperthreaded CPU
Is it better to run a VM on a dual core hyperthreaded machine as a four core or as a two core VM.
The hyperthreaded 'virtual' cores are not as fast as the real cores. Does this effect the VM?
4
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2answers
859 views
Xen - Make one guest OS have 2 cpus?
I have inherited a Xen setup. The dom0 and domU's are all linux. dom0 has 8 cores (or CPUs, I'm not sure). We want to run more stuff on one domU. I want to make it a multicore CPU, ie so that the domU ...
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4answers
3k views
Why does my Windows 7 VM running under Linux' KVM not use all the virtual processors?
All
I've had a problem on my server since I migrated one of my VM's from Windows 2008 Server to Windows 7 (ultimate): though I've assigned four cores to the VM and it even seems to see them, it seems ...
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3answers
3k views
More RAM or More Cores for a MySQL Database Server?
Here's the scenario, which I'd love your expert advice on:
I've got about 2GB of database currently, maybe double that in a year. I want the optimum server performance for the dedicated DB server I'm ...
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2answers
395 views
SQL Server 2005 preferring a single core per cpu?
HI folks,
I've a SQL Server 2005 system, with 4 cpus in it each with 4 cores. It's currently mainly utilising just 4 cores, ie 4 hover around 90% utilisation at peak and the others closer to 30%. I'm ...
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2answers
290 views
Two Xeon Processors with Different Clock Speeds on the Same Motherboard: Possible?
If I have a 2.0gHz Woodcrest 5130 Xeon and a 1.6gHz Woodcrest 5110 Xeon, can I put them both on the same motherboard?
The machine in question is a PowerEdge 2950.
0
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1answer
617 views
Hardware virtualization support for Core i7 + P55
I'm considering a hardware upgrade from AMD Opteron 1216 to a Core i7 920 or Core i7 860. I want to know if Hardware Virtualization (VT-X) is supported? I found the spec sheets online which say yes. ...
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2answers
7k views
Disable CPU cores in bios?
Is it possible to disable CPU (Intel) cores in BIOS, and if yes what HP/DELL (others?) 1U/2U servers would allow this?
It is becoming difficult to find new server hardware with dual core CPUs, most ...
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2answers
3k views
How to determine actual virtual CPU configuration of ESX image?
We have severe performance issues on an ESX client, but from where I am I cannot directly view the server configuration, yet I want to find out whether they set it up correctly.
Running CPU-Z shows ...
1
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1answer
124 views
Should a core be “reserved” for the OS in a multi-core (SMP) Linux system?
If I plan to run eight applications on an eight core machine and expect all applications to utilise 100% cpu, will the OS "get enough time" for its own tasks or should I instead run seven applications ...
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2answers
258 views
Util. to tell me how many cores are being used under Win 2003 Standard
Confusion reigns about licensing, with the No. of processors that can be engaged by various versions of 2003/ 2008 server. Now that we have 6 core AMDs and future 8 core Intels, I wonder if hardware ...
0
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2answers
272 views
Is Pentium D915 plug compatible with Core 2 Quad?
I have a system:
dual core pentium d 915 currently running at 2.8GHz
with 2GB DDR2.
I wish to upgrade it to be used as an application server.
I wish to upgrade the processor and ram to 4GB.
...
2
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2answers
778 views
Can I turn off a faulty core temporarily on my CPU?
I have the following CPU:
AMD Phenom 9600 Agena 2.3GHz 4 x 512KB L2 Cache 2MB L3 Cache
Series Phenom X4
Model HD960ZWCGDBOX
Socket AM2+ 95W Quad-Core Processor
I'm getting BSODs and an event ...
0
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2answers
1k views
CPU Utilization of a multithreaded process
Background: I have a whole mess of systems running the 2.6.20 and 2.6.22 kernel in what started as a Fedora Core 2 install several years ago. These systems have 8 cpus, as reported by cat ...
3
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4answers
255 views
Can Windows be configured to only use a single hardware thread?
Is is possible to configure Windows to only use a single hardware-thread. Every machine for the last couple of years seems to be at least dual-core, but some timing bugs are only reproducible when ...
1
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5answers
177 views
low cost multi-core testbed system [closed]
I'm looking into research in multi-core processing and hardware to test it on. I would need at least 4 cores (but that's fairly minimal and I would prefer as many as I can get without upping the price ...
