CPU is the portion of a computer system that carries out the instructions of a computer program, to perform the basic arithmetical, logical, and input/output operations of the system. The CPU plays a role somewhat analogous to the brain in the computer.

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188 views

Is this a 2 or 4 CPU Configuration? [closed]

I'm looking at this server configuration (I'm reviewing a customer's potential order for a server for our software) and I'm trying to understand what kind of CPUs would come on the server. HP SB Gen8 ...
1
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0answers
127 views

Using Perfmon counters only, how can I determine host CPU contention / overload?

I'm running VMWare and have an ESX host that is running at 100% CPU. I also have two Exchange 2010 CAS servers that are running at 100% CPU, Here are some additiona observations: The sum of the ...
0
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1answer
172 views

IBM Blade HS21 Processor Compatibility

Can anyone tell me of a resource where I can find out specifically which IBM HS21 blades support which processors. In particular I have Intel 2X E5420 and Intel 2X E5450 which will work in some of my ...
0
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1answer
63 views

Server goes to 100% and stays there, how can I investigate this? [duplicate]

I have a problem. I am on a Xen VPN, running CentOS 6 and Apache. I have a medium traffic Zen Cart store and a few low traffic wordpresses. I have one or two very simple PHP form submission scripts, ...
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2answers
189 views

How do power consumption and size-of-smallest-feature matter when buying a processor? [closed]

Background: I am shopping for processors to build a server on Newegg. The first bullet point on each processor displays the size of the chip in nm and its wattage. Why? I am looking at the number ...
0
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0answers
54 views

High load cause? [duplicate]

Possible Duplicate: what is my server high load cause (4 cores and 8 thread cpu) What is my high load cause? CPU,RAM or IO? 4 Core, 8 thread cpu top - 22:27:07 up 149 days, 5:26, 1 ...
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1answer
145 views

Replacing a loud fan in a 1RU server

I just bought a firewall that is very loud. The biggest problem is the two fans in the back (2 x Sunon 40mm fans) running at full speed. The firewall is 1RU with pfSense installed on it.The CPU is a ...
0
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1answer
164 views

*tiny* SOHO fileserver upgrade recommendations in 2012? [closed]

I say 2012 as we'll likely be buying last year's hardware. We're non-profit (a two-man operation), and this purchase isn't on project funding, so we're cost-restricted, but I always advocate for ...
0
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1answer
400 views

BIOS System Firmware failed

One of my company's servers won't boot. Both CPUs' error LEDs are lit. The iRMC interface shows the following errors: CPU 1 failed CPU 2 failed BIOS System Firmware (BIOS/EFI) failed All other ...
0
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0answers
525 views

Ubuntu 12.04 64bit - What would cause high System CPU %sys during high MySQL loads?

128GB RAM, 32cores Xeon RAID 10 SSD. Mysql version is the latest 5.5 for Ubuntu 12.04 . We have a lot of queries - about 1800+ per second. During high MySQL load - 2700+% load on a 32 CPU system - ...
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2answers
201 views

What is the best way to get ubuntu webserver cpu and memory load chart? [duplicate]

Possible Duplicate: What tool do you use to monitor your servers? I have a simple ubuntu 12.04 server that runs nginx, gunicorn and some python WSGI websites. Every morning i want to see ...
3
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2answers
795 views

Laggy server, seems iptables is doing the load

I added a few thousand IPs packed in multiple /24 classes to a CentOS box and because of that I am getting scanned day and night. Since this server will be a workhorse and it will only need to be ...
0
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0answers
109 views

cannot find high load cause

I cannot find high load cause. CPU usage is not high. Maybe disk is causing high i/o, but disk utilization is not that high too. The peaks around 4:30am is backup time and not that important.
2
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1answer
3k views

How to make Windows 2008 R2 see 4 CPU cores, with two single core processors , Hyperthreading enabled

I had server with old Xeon DP and Windows 2008 R2 , With hyperthreading enabled OS saw 2 CPU cores. Recently I've added second same Xeon DP , but OS steel sees 2 CPU cores. I did uninstall all cpu's ...
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0answers
190 views

Nginx reverse proxy apache2 High CPU load

my server: 2x Intel Xeon 5506 2.13GHz 24 GB DDR3 RAM Debian 5.0.8 64-bit My server CPU is aroung 90% at 600 users and around 6 page views per second. There are 2 Sites on the server. One Forum with ...
6
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1answer
954 views

KVM/Qemu, Ubuntu: Why do more guests CPUs enhance Disk-I/O rapidly?

We have an Heartbeat/DRBD/Pacemaker/KVM/Qemu/libvirt cluster consisting of two nodes. Each node runs Ubuntu 12.04 64 Bit with the following packages/versions: Kernel 3.2.0-32-generic #51-Ubuntu SMP ...
6
votes
4answers
915 views

using i7 “gamer” cpu in a HPC cluster

I'm running WRF weather model. That's a ram intensive, highly parallel application. I need to build a HPC cluster for that. I use 10GB infiniband interconnect. WRF doesn't depends of core count, but ...
0
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0answers
161 views

Cisco 7206vxr cpu reducing

I have a 7206VXR (NPE-G2) . At the rate of 140 kpps i gain 80% of cpu . So i looking for ways how to reduce it? So i want to turn off netflow(but don't want to this,monitoring is highly important for ...
0
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3answers
293 views

Linux: One cpu core is always in 0 use

Today I notice a very strange thing. One cpu core is always in 0 use . Is it a bug? Cpu0 : 0.0%us, 0.0%sy, 0.0%ni, 0.0%id, 0.0%wa, 0.0%hi,100.0%si, 0.0%st Cpu1 : 37.7%us, 44.4%sy, 0.0%ni, ...
3
votes
1answer
2k views

Strange high CPU I/O wait on postgresql server

I'm really struggling with a performance issue currently, where all my database queries takes up to a 1000 times more than normally, when my database server is under "heavy" load. I have a server ...
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votes
1answer
68 views

Can i boot the server [closed]

Hello and good day. I have a ml350 g4 and i have these questions: I dont have the cpu-fan & heatsink does it need that to boot? Does it need the chassis fan to boot? What ram does it need? ...
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1answer
1k views

How to limit excessive CPU usage from guest OS in KVM

On Xen it is easy as we have CreditScheduler [1], so on a machine with each guest OS sharing only portion of CPU, e.g. 6 guests running on top of a dual core CPU, excessive CPU usage is prohibited. ...
2
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1answer
538 views

Monitoring usage resources per user in Linux

I want to get statistic hourly by used averages resources per user such as cpu and memory. How I can get it?
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1answer
746 views

High CPU Usage in windows server 2003

In one of our production servers the CPU usage is 100% and thus some of the backup jobs failed. In windows server 2003 cms.exe shows : 50%, tomcat_3.exe : 25%, and tomcat_1.exe : 25%. Please help me ...
1
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1answer
604 views

AIX CPU Utilization behavior

We are facing a strange (for us) situation regarding the CPU utilization management. We have an lpar with 2 up to 4 online cores. While the application workload peaks, CPU usage is 100% (70% user + ...
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1answer
96 views

4 CPUs - 2 on 100% 2 on 30% - How do I even the load out?

When running a job on a SQL Server 2008, I notice that 2 CPUs are running at 100% but 2 are only about 30%. How can I spread the load and will it reduce the duration of the job which currently takes ...
12
votes
3answers
2k views

Balancing RAM when using multiple CPUs

We have HP DL360 G7 server with one cpu and 16G 12G ram. We plan to add another cpu. So, we need also ram for second cpu. Is there any negative performance impact if we add different size of ram to ...
2
votes
2answers
10k views

How do I determine what taskhost.exe is doing?

Once or twice a week taskhost.exe slows my computer to a halt! It takes up 25% of my CPU power (ie. 1 processor). I can't kill it an have no idea what it is doing. I imagine that its some kind of ...
0
votes
0answers
275 views

Why does CentOS Linux use cpu/core #1 so much more in a 4-core system?

I've been watching top and htop for awhile on a very active server and I am wondering why linux does not automatically use cpu affinity better? CPU #1 (actually core #1 of 4) is used much more ...
1
vote
2answers
147 views

CPU Cooling with Heatsinks [closed]

I've constructed a server that uses 2 Xeon E5-2620 CPUs and per Intel's recommendation I'm in the process of ordering heatsinks for each and I'm slightly concerned about thermal management. The case ...
3
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1answer
3k views

Disabling CPU management

If I add the following processor.max_cstate=0 to the kernel command line for boot up, does that disable all CPU power management and throttling? I also found: ...
2
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1answer
365 views

Load average relation to cpu threads and cpu cores

Is load average related to CPU ThreadS OR CPU core? i am having a xenon cpu with 8 cores and 16 threads. How much can be the acceptable load average? Sometimes Load AVerage reaches 11. so does ...
0
votes
1answer
208 views

Maximum CPU and hyperthreading [closed]

Hyperthreading doubles the logical cores, but doesn't double CPU resources. Linux measure CPU usage in %, allocating 100% points for each thread, thus reporting a maximum of 800% for a quad-core CPU ...
0
votes
1answer
321 views

HIGH CPU USAGE + low memory usage

As you can see in below, Apache is using a high amount of CPU. PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 28577 apache 15 0 99676 53m 3488 S 21 0.2 1:13.67 httpd ...
4
votes
2answers
3k views

How to calculate CPU % based on raw CPU ticks in SNMP

According to http://net-snmp.sourceforge.net/docs/mibs/ucdavis.html#scalar_notcurrent ssCpuUser, ssCpuSystem, ssCpuIdle, etc are deprecated in favor of the raw variants (ssCpuRawUser, etc). The ...
4
votes
3answers
7k views

What is the meaning of “deassert” in this context?

The English majors over at Dell provided me with this error message provided by a PowerEdge 2950. CPU2 Status: Processor sensors for CPU2, IERR was deasserted I've Googled it, random forum posts ...
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2answers
370 views

What is cpuinfo telling me?

On my current server, when I do cat /proc/cpuinfo, I get: E3-1230 @ 3.2ghz / 1600mhz and there are 8 of these. Does this mean there are 2x quad core processors? I've looked everywhere and I'm not ...
1
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2answers
1k views

Coreinfo reports i7-3770 CPU doesn't support EPT (aka SLAT) and VMX

Here is the output I get when I run coreinfo: Coreinfo v3.05 - Dump information on system CPU and memory topology Copyright (C) 2008-2012 Mark Russinovich Sysinternals - www.sysinternals.com Note: ...
0
votes
2answers
269 views

find the cpu usage of a process on Ubuntu?

Is there a way to find the CPU usage of a process on ubuntu combined with the cpu usage of all the child process. And also would it be possible to get this number as a % of the total CPU usage?
0
votes
1answer
193 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
343 views

Monitor CPU usage over period of time on Ubuntu

Is there some way to monitor my CPU usage over a period of time, e.g. get a graph that shows CPU% vs. date/time? I occasionally see high load using htop, but I'd like to see what's happening ...
4
votes
3answers
534 views

Is it possible to get a list of running processes with a Cloudwatch Alarm?

We have an EC2 instance (Ubuntu) that has a few java-based applications and lately we're getting hit with high CPU utilization spikes that trigger one of our Cloudwatch alarms. By the time we get ...
2
votes
2answers
1k views

IBM x3400 upgrading to 2 x CPU Quad-Core Intel Xeon E5430

I'm trying to install two Quad-Core Intel Xeon E5430 CPUs in an IBM x3400 with an IBM M97IP motherboard. When I turn the power on, it takes approx. 3 sec. then the fan stops and nothing happens. ...
4
votes
1answer
879 views

Difference between Processors and CPU core

can any one please clarify the difference between actual no of processors and CPU cores. in my case i am having Intel Xeon® Processor E5620 as per intels product page: its having # of Cores 4 # of ...
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1answer
458 views

CPU frequency shows different numbers from time to time

I have a web server with CentOS 5.8. My hosting provider says that I have e6600 with 2.4GHZ. I tried the following and I get different clock speeds each time. Is my CPU underclocked? cat ...
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votes
1answer
531 views

MySQL runs at >=100% CPU, heavy disk I/O?

Recently my Debian Linux server has been experiencing slow web server response times. I've investigated and it seems that MySQL is the culprit, yet there are no slow queries indicated by the slow ...
5
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5answers
1k views

Ubuntu Server 12.04 CPU Load

I have a Server (2x Hexa-Core Xeon E5649 2.53GHz w/HT with 32GB RAM and 20000 GB Bandwidth) running Ubuntu Server 12.04 LTS. The server runs LAMP and serves one website only, the estimated number of ...
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votes
3answers
923 views

HP Proliant DL320 G5 CPU Fault Led

My HP DL320 G5 will go through post, even start the boot sequence from the CD, but halts with the CPU Fault LED glowing red. Each time I go back to BIOS the date is always reset to 2007. The server ...
1
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1answer
2k views

Why does mpstat show different values when I use the interval setting?

Here's the output I get when I run mpstat: $mpstat Linux 3.2.0-30-generic (my-laptop-C650) 09/17/2012 _x86_64_ (2 CPU) 05:32:01 PM CPU %usr %nice %sys %iowait %irq %soft ...
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votes
4answers
293 views

Does shutdown idle VMs improve the performance?

Often our team members are coming to me with a compliant that their VMs are slow. Our team members suggested to shutdown some of the VMs temporarily and try to access the VM. But most cases that ...