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Questions tagged [multi-core]

133 questions
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Stand alone single thread optimized server vs vm running on VMWare

I apologize for the length of my post. We recently converted our business system to a product that is licensed by the number of Cores. We purchased the 2 core license and are currently running it on VMWare. It is quite expensive to move to the next…
JohnM2092
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Is there a limitations to the number of cores on Windows 7 64 operating system?

Is there a limitation to the number of cores a Windows 7 64 bit operating system can support? I am planning to use that as render server. Rendering software is truly multi-threaded. I am getting a 32 core ( 4 Intel 8 core processor) machine for…
ramdaz
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Can IIS create threads from GPU cores?

Can IIS be set up to take advantage of new massively multi-core GPU's to provide additional thread for maximum concurrency? My thought is that with technology like the AMD Fusion would it be possible to execute threads off of these 400+ cores to…
ChaseAucoin
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Only 1 CPU Core is used in IIS 7.5

I have the following configuration. Quad Core Windows Server 2008 IIS 7.5 4GB RAM 32 bit I have hosted MVC 1 application in this server. But when running this application yields that only 1 CPU Core is used. Is there is any setting in IIS 7.5 or…
abcplex
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4 answers

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 rate. But, and here is the problem, when I send a…
Marc Riera
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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 threads execute serially. I am particularly…
Tom Hawtin - tackline
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Bad multicore performance on DL360 Gen 10 with 2xXeon 6154

I have some issue on the multi-core performance of some server. The server are HPE DL360 Gen10, mounting 2x Xeon Gold 6154 (18 cores). When i refer to the performances they are slower then some older counterpart on HPC computation (CFD, in…
vimax87
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MPI job hangs on one specific node only

I'll preface this with the note that I'm not a sysadmin (anymore)- I'm a scientist, but I'm trying to help our sysadmins out here. So I can't immediately try things that require hardware changes or require sudo, but will provide as much information…
Laxsnor
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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 me two processors with each one core, while I have…
Abel
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per processs core limit to allevate high sy/kernel cpu usage

My understanding is high kernel/sy CPU usage is a symptom of network and disk IO or issues of RAM throughput. #516139. However, I suspect in the case below, over allocating threads is giving the kernel (via scheduling) way too much to do and the…
Will
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Find process causing IO wait time

mpstat -P ALL shows high %wa time on a single core from an 8 core CPU and I'm trying to figure out what's writing to disk. So how can I figure out what is running on that CPU core?
Anthony Miller
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VMware - Can a 1 vCPU VM use more than 1 physical core at the same time?

Assume I have a physical ESX host with ONE quad-core processor and hyper-threading disabled. This means it has a total of 4 physical cores or pCPUs. I create a single VM on this VMware host. I assign this VM to have 1vCPU and put no CPU…
RealVirtualGuy
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MySQL MyISAM multi-core optimization

I've noticed that our app does not respond to requests when a demanding request is in execution. Running top seems to identify the source of the problem: top - 13:54:25 up 1 day, 13:43, 2 users, load average: 1.02, 0.98, 0.83 Tasks: 110 total, …
rinogo
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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 code: A corrected hardware error occurred. …
Jason
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Should I expect a great increase in Oracle performance in terms of handling multiple requests switching from single to dual core?

We have an Oracle database of roughly 100 GB that runs on top of a Windows Server 2k3R2 VM in ESX in a 1 socket, 1 core configuration. Whenever it has to handle a major query it seems to get "pegged" for the duration of that query (50% - 75% CPU…
tacos_tacos_tacos
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