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0
votes
1answer
48 views

Can RHEL5/CentOS5 be run on Intel Haswell-EP (E5-26XX V3) CPUs?

We need to upgrade the hardware on some of our CentOS 5.11 servers. From Redhat's Intel CPUs and Supported RHEL Versions page, I see that the E5-26XX V2 CPUs are supported. However, the E5-26XX V3 ...
-2
votes
1answer
45 views

Amazon G2 not giving a much better computing performance than my laptop CPU [closed]

I have a Java console application that performs Reed-Solomon error correction on large volumes of data (~700 MB at a time), just to test performance. The application is multithreaded, I can see it ...
0
votes
0answers
101 views

What bus size does the armadaxp CPU with armv7l architecture of a Synology DS214 have?

less /proc/cpuinfo prints Processor : Marvell PJ4Bv7 Processor rev 2 (v7l) processor : 0 BogoMIPS : 1064.96 processor : 1 BogoMIPS : 1064.96 Features : swp ...
0
votes
1answer
326 views

What are the performance implications of Hyper-threading for single Nehalem+ CPU? [duplicate]

I am choosing between two models of servers, the major difference between them being the the availability of Hyper-Threading. Servers in question are SYS-E32-1 and SYS-E32-3 from So you Start (an OVH ...
4
votes
2answers
386 views

Emulating a different CPU architecture per a VM on VMware ESXI

I currently have a VMWare ESXI server. We plan on having some build machines for compiling and testing software however we've run into a problem. All of the CPUs that the software will end up ...
5
votes
2answers
599 views

Will dual CPU servers run with one failed?

Do dual CPUs on a modern server actually provide redundancy? If one fails can the server be rebooted and run on the remaining CPU? In the past I have come across the case where CPU 0 always had to ...
-5
votes
1answer
81 views

Why is a 32bit OS limited to 4 GigaBytes of RAM? [closed]

What I don't understand is where the 4 GigaBytes comes from. Most of the articles I read say that 2^32bits = 4 GigaBytes, but this doesn't seem correct given that 8 bits = 1 byte. For a 32 bit OS: ...
1
vote
1answer
685 views

Understanding CPU related output displayed by lshw

I am trying to understand the meaning of some of the CPU related output provided by lshw. $ sudo lshw -class processor *-cpu description: CPU product: Intel(R) ...
1
vote
1answer
55 views

No architecture vs architecture-specific binaries

From what I understand, the noarch suffix means that it's architecture independent and should work universally. If this is the case, why should I install architecture-specific packages at all? Why not ...
5
votes
2answers
78 views

Multi-Architectures and Their Binaries

Why is there a /usr/lib and a /usr/lib32 directory but only a /usr/bin and no /usr/bin32 directory on a AMD64 64-bit-install of Ubuntu? If or when Debian/Ubuntu start supporting ...
-3
votes
3answers
385 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
votes
3answers
250 views

Detect CPU Vendor on OSX

So, I considered asking here instead of SO because people here are more likely to be familiar with this stuff. I'm currently using PHP to detect some generic stuff on the host OS. In this case, I'm ...
2
votes
1answer
447 views

Converting from 32-bit Linux to 64-bit LInux — Amazon Web Services EC2 cloud server — Import AMI

My client would like to upgrade from our current development 32-bit server to a much larger server running on a 64 bit platform. I'd very much so like to just import a snapshot of my current server's ...
12
votes
5answers
3k views

So really, what is the overhead of virtualization and when should I be concerned?

I'm searching for good rules of thumb to understand when NOT to virtualize a machine. For example, I know that a fully CPU-bound process with near 100% utilization is probably not a good idea to ...
2
votes
1answer
1k views

Hyperthreading vs. SQL Server & PostgreSQL

I have read that hyperthreading is a "performance killer" when it comes to DBs. However, what I read didn't state which CPUs. Further, it mostly indicated that I/O was "cut to < 10% performance". ...
0
votes
1answer
53 views

Install correct libraries depending on 64/32 bit

I am using Bash to install a customised version of JBoss, and one of the things I would like to do is install the correct version of the Apache Portable Runtime, which is a native binary. This script ...
1
vote
1answer
375 views

IBM x3200 M2 and chaning the CPU

As my server IBM x3200 M2 and CPU (E4600) does not have VT-x for virtualization (I would like to virtualize Windows in XenServer), may I substitute this CPU for some core2duo or core2quad that ...
1
vote
1answer
4k 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 ...
1
vote
2answers
380 views

which Intel CPU is faster?

I'm talking to a representative of a hardware company trying to sell me a new server and he's adamant that the E5504 CPU which is a Quad core 2Ghz with 4mb cache would be faster than our existing ...
-2
votes
3answers
332 views

What is a dual-core processor and how is it different form single core? [closed]

In what ways are dual-core processors different from single core processor ? Are dual core processors different form multi-processors ? If yes, then how ? What are logical and physical CPUs ?
1
vote
4answers
338 views

How can Linux run on different microprocessors?

How can Linux run on different microprocessors? Is the Linux kernel being compiled at installation each time?
6
votes
2answers
3k views

How does Windows 2008 R2 run 32-bit applications?

If 32-bit processor support is disabled in Windows Server 2008 R2, how does the operating system run 32-bit programs?