1
vote
0answers
54 views

Does installing more CPUs (Intel) than indicated by “Max CPU Configuration” prevent all cores from being used?

I am looking at a server that has 4 physical processors, the Intel documentation indicates they are 6 core processors but this WMI query WMIC CPU Get NumberOfCores, NumberOfLogicalProcessors ...
3
votes
1answer
76 views

Investigating a potential CPU failure

On a Ubuntu server that I am using for computations I have recently observed that some CPU extensive programs (GUROBI,CPLEX) often segfault. Being in correspondence with tech support of the ...
4
votes
2answers
728 views

How to improve Intel X520-DA2 10Gb NIC throughput without Jumbo packets

Here's what I have done so far: Using more Rx/Tx buffers boosts performance the most from defaults. I set RSS Queues to 4 on each adapter, and specified starting RSS CPU on the second port to ...
-1
votes
1answer
112 views

Kvm poor cpu performance

I have running some Minecraft Servers in a Qemu VM over Libvirt, and the performance is only half good than on real hardware. Libvirt started the vm over: /usr/bin/kvm -S -M pc-1.1 -cpu ...
0
votes
1answer
190 views

Why no Ivy Bridge servers? [closed]

It seems that Intel released server versions of their Ivy Bridge chips in May of 2012. It's now October of 2012, why can't I buy a server with an Ivy Bridge chip? When might I be able to?
2
votes
2answers
373 views

Optimal number of threads for compute-intensive task on server with Hyperthreading

When running a compute-intensive task on a server with an Intel i7 quad-core processor with Hyperthreading, is it ideal to run eight threads (for the eight virtual cores), or only four (for the four ...
0
votes
1answer
902 views

What is the difference betwwen two Xeon CPUs with stepping 11 and 7?

Would you please explain me what kind of differences between these two CPUs have: 1) processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 15 model name : ...
0
votes
1answer
2k views

Best upgrade option for socket LGA771 Intel platform?

I've got a dual CPU Intel Dual-Core Xeon E5140 system. What's my best option to max the system performance-wise by CPU upgrading. It's an IBM server with LGA771 sockets. It's meant for typical LAMP ...
0
votes
6answers
3k views

How come Core i7 (desktop) dominates Xeon (server)? [closed]

I have been using this performance benchmark results to select what CPUs to use on my web server and to my surprise, looks like Core i7 CPUs dominates the list pushing Xeon CPUs into the bush. Why ...
4
votes
1answer
2k views

cat /proc/cpuinfo shows 3.00GHz model but 1400.000 cpu MHz?

I ran this command on ssh to see CPU info: cat /proc/cpuinfo And it says: ... vendor_id : GenuineIntel cpu family : 15 model : 4 model name : Intel(R) Pentium(R) 4 CPU ...
0
votes
1answer
118 views

How would an eight-core Pentium 4 compare with a Core 2 Duo? [closed]

Specifically, an eight-core "Paxville" Xeon system clocked at 3 GHz versus the Core 2 Duo system clocked at 2 GHz, ceteris paribus. This is assuming that the workload is effectively distributed ...
1
vote
1answer
551 views

What would be a ec2 unit equivalent of a X5670 hex core xeon

A ec2 compute unit is 1.0-1.2 GHz 2007 Opteron or 2007 Xeon processor. I'm looking at a X5670 hex core xeon: http://ark.intel.com/Product.aspx?id=47920 Is it even possible to compare the 2? I'm ...
16
votes
1answer
13k views

Monitoring/controlling Intel Turbo Boost in Linux

Is there a nice way to monitor and/or control Intel Turbo Boost technology on Nehalem processors from a Linux host? I'm looking to do this RHEL/CentOS 5.5 hosts running stock or Realtime MRG kernels. ...
2
votes
2answers
225 views

Performance difference between E5405 and X3460

I'm looking at purchasing one of two servers. They're of similar specs except the CPUs. Server 1 comes equipped with 2 x E5405 and server 2 only has one X3460. I've got a few servers that are ...
1
vote
1answer
2k views

What is the difference between the C0 and E0 stepping in the Intel Xeon 5400 family of processors?

My primary question is in the title, and can be answered as simply as that. However, I think some background information may be relevant. I'm doing some research into upgrading one of our three year ...
3
votes
1answer
1k views

Confused about Intel vPro/AMT technlogies

I'm a bit confused about Intel vPro/AMT and processors/motherboards supporting these features. If I install an Intel i3 processor - a CPU not vPro compatible - on a motherboard compatible with these ...
0
votes
3answers
883 views

Speedstep and Intel x5570?

My new server has 2 x X5570 CPUs. Now here is the output of grep -i hz /proc/cpuinfo model name : Intel(R) Xeon(R) CPU X5570 @ 2.93GHz cpu MHz : 1600.231 model name : Intel(R) Xeon(R) ...
6
votes
6answers
445 views

Life span of Pentium computers

I was given the task to determine the life span of a computer with a Pentium 1 processor. One of our clients is unwilling to upgrade their computers in order for our software to run and we are ...