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Questions tagged [cpu-usage]

The amount of processing units of the CPU used to execute a task and how long it takes.

2
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1answer
390 views

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 ...
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0answers
218 views

CPU performance counter not working in Windows 10 guest, VMWare ESXi host

CPU performance counters are not working inside my Windows 10 guest virtual machine. I run a bare metal VMWare ESXi (6.5) host. As can be seen from the screen shot all other non-CPU performance ...
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1answer
123 views

Improve performance for my VM instance on Google Cloud

We already have a VM instance which is a custom (6 vCPUs, 32 GB memory) Intel Sandy Bridge. The CPU utilization is always at 60%. Is that normal? Can be improved in order to optimize server response ...
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0answers
161 views

klogd using high CPU on Ubuntu 14.04

One of our servers continues to alert on high CPU. When looking into this, it is consistently being caused by the klogd process: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ ...
2
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0answers
670 views

Why do user and system cpu in cpuacct.stat not add up to cpuacct.usage?

Question relates to Linux cgroups cpu accounting. I noticed this at the container level, but it persists up to top level. For instance: # cat /sys/fs/cgroup/cpu/cpuacct.stat /sys/fs/cgroup/cpu/...
2
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1answer
277 views

Cannot move all processes by a user into cgroup using cgred

I am on a CentOS 7.4 server, and trying to setup CGroups. My cgconfig looks like this: # # Copyright IBM Corporation. 2007 # # Authors: Balbir Singh <balbir@linux.vnet.ibm.com> # This ...
1
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1answer
919 views

Windows Servers High CPU usage when no user is logged in

Since a few days ago a lot of Windows servers on a corporate domain started to have almost 100% CPU usage. All of them are on VMWare Hosts and even there we can see the 100% CPU usage on the host ...
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0answers
164 views

Xen PVM host showing wrong info about Cpu core and socket

I have XEN install on a machine which has 2 sockets of 4 core each. So total 8 core and each core have 2 thread. So the server have 48 logical CPU. [root@xen ~]# xm info release : 4.1....
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0answers
10 views

What do I scale up on a virtual server to take load off the CPU while uploading big files? [duplicate]

I have a small photography portfolio website running on Ubuntu. It's a Digital Ocean droplet with the following parameters: 512RAM memory 1 vCPU 20GB SSD disk 1TB transfer This setup is sufficient ...
3
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1answer
1k views

qemu-system-x86 consumes about 25% cpu on host while guest is in idle state

I run two kvm guests on my host, with the same config. One of them is a ubuntu 17.10, the other is a debian 9.2. Both are running on linux kernel 4.13 (debian is installed from the backports repo) On ...
6
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4answers
812 views

How is RAM and CPU allocated if no manual changes are applied to an Ubuntu Server

We have an Ubuntu Server (16.04) running R-Studio Server where we do statistical simulations. Those simulations are sometimes heavy on RAM and CPU so i would like to know how memory and RAM is ...
0
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1answer
125 views

Is Kernel-General time sync event linked with CPU usage?

We are running 6 2008 SQL Servers on Windows Server 2008 R2, 4 of which were sitting around 50%+ CPU usage during peak usage. On Wednesday, the CPU on 2 of these 4 servers dropped by 20% and ...
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2answers
1k views

CPU usage in a VM is over 100%

I have installed an Ubuntu server 16.04 in a VM from vultr (my plan is 2 CPU, 4GB RAM) and I noticed today in the admin panel that the CPU usage the last month is over 100% (currently is in 103%). In ...
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0answers
274 views

AWS EC2 instance not rising above 60% CPU utilization

We have an AWS Scaling Group with several EC2 instances that will never go over 60% CPU utilization rate and we have no idea why. We have other servers with similar functions and builds that don't ...
3
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0answers
1k views

PowerShell high CPU usage in Windows Server 2012 R2

I'm facing this problem recently: My server gets very slow, I went to check and see one instance of PowerShell using a lot of the CPU. I force the task to end and after some hours it comes back. The ...
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0answers
288 views

Find out CPU and memory usage percent of Docker container within its running environemt

Does anyone know how to get resource consumption of a specific Docker container within its running environment? Outside of a container, we can get it easily by typing a command "docker stats". ...
0
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2answers
409 views

High CPU load on Apache mod_php webserver

My web server (Ubuntu, Apache and Redis-server) is hitting 100% CPU on peak times. There is a rapid increase on CPU usage after redirecting all traffic to HTTPS. We are using PHP 5.6, Apache 2.2, ...
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2answers
223 views

How to measure bandwidth per cpu utilization [closed]

I'm trying to measure efficiency of the networking system and looking for a tool that either allows to limit max bandwidth for each test or, ideally, limit cpu utilization. At the end I need to have ...
3
votes
2answers
55 views

How to project / measure physical host wait with multi-core guests in ESXi

I’ve heard that if you have a guest with N virtual cores under ESXi, the hypervisor waits for N total logical processors on the host to become available simultaneously before delegating work from the ...
1
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1answer
26 views

Analyze single CPUs activities instead of sum of total CPU for what is usefull for?

I'm building a monitor to track down all Linux /proc data that can be usefull to understand how the server is behaving. Still I cannot understand if I should track every single CPU (and in a virtual ...
0
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0answers
56 views

Unknown commands running and eating up all the CPU

Here are a few unknown commands eating up all the CPU resources on Amazon ec2. This is since 10 hours. Command names are unrecognizable and read as phpxxxxx_xxxx. Can any one guess what is going on ...
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0answers
233 views

WSUS CPU & MEM issue

We have hosted WSUS services on Windows Server 2008 R2. The sqlservr.exe and w3wp.exe is using lot of memory. But as per observation The physical memory is 50% used but CPU usage is more than 90%. ...
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1answer
184 views

no reduction of CPU usage using “nice” utility in Dual Core Machine [closed]

to observe the actual working of "nice" utility in linux, I wrote a python script to calculate SHA512 non-stop. - Preparation - a Dual Core Linux Machine, a Single Core Linux Machine ( actually, ...
3
votes
1answer
2k views

How to throttle Chrome's CPU usage?

We've got a company using a terminal server to do most of their work and when multiple people are using Chrome with a few tabs open the CPU gets maxed. Is there an easy way to limit how much of the ...
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0answers
509 views

windows server 2012 cpu quota

I have written a multi-threaded program that is running on Windows server 2012. The program will create threads to take advantage of multiple CPUs and I can control the number of simultaneous threads ...
1
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1answer
168 views

AWS Amazon AMI EC2 get memory usage with php for shell exec

Apologies for the rookie question would really like some advice on best practice regarding my issue. I have ffmpeg installed in my box and I am running a simple script that converts a .mp3 to a .wav ...
0
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3answers
2k views

High load average, when should I be worried? [duplicate]

I have a server which runs a few hundred processes simultaneously, most of them are idle, it is some sort of web crawler it sleeps between requests for various reasons. So as a result, my load ...
-1
votes
2answers
1k views

How much interrupts is too much?

On an AWS instance x1.32xlarge (128 cores), we are getting a lot of interrupts per seconds. Here are the top CPUs in interrupts/s: Interrupts Top CPUs CPU0: 140838.0 CPU1: 77867.0 CPU4: 66495.0 CPU6:...
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2answers
1k views

Tomcat consuming more Memory after Application Data is added .

A Tomcat Server suddenly shows an increment of 2 GB memory consumption after adding more data into the Application or Application Oracle Database. What I mean is that after restart Tomcat is normal ...
0
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2answers
2k views

High CPU from MySQL process

We have a Magento website on a dedicated server (Xeon E5-1620, 64Gb RAM, SSD), we don't generate high traffic, it is a rather small site, around 30000 page views/month, an average of 100 orders/day. ...
0
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1answer
228 views

SNMPD reporting conflicting CPU usage to top/htop

I've got a bit of an issue with reporting discrepancies. I've currently got a server running Ubuntu 14.04.1 trusty and am receiving SNMP alerts saying that 2 of my cores are at 100% usage. When I ...
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0answers
31 views

Process CPU% doubles when paired with more, similar processes

We're running into an interesting conundrum that I'd appreciate some help troubleshooting. We have a service that has several processes. To distribute load, we can startup n-processes of most types. ...
1
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1answer
2k views

Find out CPU and memory usage percent of Docker container

Say I have a single machine and I want to find out how much of the physical CPU is used when I run a container. I am not interested in inside-container stats. Similarly I want to find out the memory ...
0
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1answer
248 views

Can I get the “Active Time Percentage” of the physical drives programmatically?

How can I get the "Highest Active Time" of the drives programmatically? I can see it on Resources Monitor, but I want to get it programmatically with a script (VBScript, Batch) or application, so I ...
1
vote
1answer
201 views

GCE micro instance-group autoscaling anomalies

I have a managed instance-group in a project in Google Cloud Platform. My instance group is using the smallest predetermined machines that GCP offers, the f1-micro (more info here: https://cloud....
0
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1answer
658 views

php-fpm with NGINX response time exponentially increase over time

I have a load balanced application on AWS, on two c4.2xlarge (8 vCPUs, 15GB ram) servers and they serve a very simplistic site but with a system call to ffmpeg encode a <5s mp4. Individually, the ...
1
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1answer
788 views

Very High CPU load Low to Medium RAM usage on VPS (mysql over 100% CPU)

I'm on a VPS Virtuozzo server with: 8GB RAM 6 CPU SSD Hard Drive Debian 8.8 PHP 5.6.30 MySQL 5.5.55 There only one website that is served. Its a wordpress with SSL enabled website with around 22000 ...
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2answers
688 views

Update64.exe Using All CPU Resources

I have tried finding out what Update64.exe really does. I think it might be a virus but there's not much out there on the topic. Does anyone know how to fix this? It's using pretty much 80-100% of CPU....
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0answers
372 views

Troubleshooting Nginx + Php-Fpm Set up

Researched this issue many times and now need help understanding some diagnostics. Basically switched a server over from Apache + Php regular to Nginx + php-fpm. The problem is after a small ...
2
votes
1answer
560 views

isolcpus - binding not working

I am using isolcpus to isolate cores. I would like to bind specific threads to cores, but it is not working. The threads are moved to different cores after I bind them. Cores 13, 14, and 15 are ...
3
votes
1answer
290 views

Linux Load Average in Billions with Thread Count Only in Thousands?

One of our servers is currently sitting with its load averages in the billions (with a b), while reporting that it only has 1,031 resident threads: top - 12:04:26 up 2 days, 19:03, 68 users, load ...
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2answers
184 views

Why is CPU usage somewhat “nicer” today than yesterday?

First post here from an eager learner more educated with front end. Please consider the following munin graph: Considering the general traffic the site on this box got today was the "same" as ...
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votes
3answers
2k views

MySQL is using too much CPU

I have i7 3770 dedicated server with 32GB ram, and Centos7 is installed, below are CPU details [root@server ~]# lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: ...
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votes
1answer
4k views

How do I monitor system parameters like memory, CPU and disks on windows systems via SNMP? [duplicate]

I want to monitor system parameters like CPU load, CPU Idle time on windows system via SNMP. Does HOST-RESOURCES-MIB can handle this?
1
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2answers
784 views

How to get all processes running on each CPU core in Ubuntu?

I am working on Ubuntu14.04 server and it has 48 CPU cores. I am seeing there is high CPU usage on one core from sar information. So I want to know which processes are running on that core. How should ...
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0answers
94 views

Ubuntu reduce/increase the number of cores used on a per demand base

I would like to ask for best practices how to manage on demand base the number of cores in use of a Dell PowerEdge 1950 Gen II running Ubuntu 16.04 lts. The PowerEdge 1950 has two quad core Intel ...
1
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1answer
331 views

Apache recently using increased CPU while idle

I've been running an Ubuntu 14.04 server with the standard LAMP stack for quite some time now and have the system report hourly average CPU usage to me via daily emails. For a long time, this was ...
1
vote
2answers
1k views

Why is my AWS instances suddenly becoming irresponsive reporting high “stolen” CPU

The setup I have a bunch of t2.small EC2 instances running hosting the image processing library called thumbor for simple on-the-fly image resizing. Originals are loaded from S3. In front of the ...
0
votes
1answer
307 views

Random High CPU load

I have a server that suddenly peaks between 4 to 6 load average at random times of the day and can't pinpoint what the cause is. Majority of the time, the load average would be hovering between 1.5 to ...
0
votes
2answers
342 views

CPU usage spikes when calling website

I have a quick question for something I couldn't find while searching. I'm a total server noob so please don't get angry. When I track CPU usage using ssh top I can the user process causing about 20 ...