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Questions tagged [performance-monitoring]

Questions about monitoring server hardware and software performance, or network performance.

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Understanding CPU steal time in cloud

I am trying to understand about CPU steal time. This article is the top result: https://scoutapm.com/blog/understanding-cpu-steal-time-when-should-you-be-worried To be honest, I do not understand the ...
some user's user avatar
  • 181
3 votes
0 answers
161 views

How to investigate 100% CPU load for 15 minutes on random days

"I have a server that runs a website on Apache2 and is behind Cloudflare. The server's normal load, according to 'htop', is 10%. However, at random days/times, the server load spikes up to 100%, ...
CodePanda's user avatar
  • 141
0 votes
2 answers
292 views

Undersubscribed ESXI host shows 100% CPU

I guess the question is more theoretical one. We have ESXI host with 48 Logical Cores (HT enabled, 24 real cores). We run 4 machines each provisioned with 8 vCpu. Each machine operates on 75% CPU on ...
Boris's user avatar
  • 185
0 votes
2 answers
186 views

How to use top without interactivity?

I want to periodically monitor the CPU usage and plot in time series. Not having much knowledge, I plan to use the top command, something like this question (Monitor cpu usage (and perhaps memory ...
user180574's user avatar
0 votes
1 answer
270 views

Does frequent ping affect local network speed?

(Sorry for my english) Hi, I am about to set up a monitoring server and wanted to know if pinging the network devices could significantly affect the speed of the local network. I want to ping every ...
Kuroro's user avatar
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0 votes
1 answer
554 views

Is there any tool or any way to get all processes which are queued in windows?

Is there any tool or any way to get all processes which are queued in windows? i have value of CPU Queue very high i have few apps running on server. the CPU Queue continue to reach sometimes 3000, ...
Farhan's user avatar
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1 vote
0 answers
784 views

kswapd0 jumps near 100%, freezes an EC2 t2.micro instance

I have an EC2 t2.micro instance that I use as a test instance for a web app, OS: Ubuntu 22.04.1 LTS the CPU consumption of kswapd0 the process jumps near 100% once in a while, causes a freezes of the ...
Max L.'s user avatar
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1 answer
187 views

Identifying source of memory drain on Windows Server 2019

Every Saturday night around midnight the server in question experiences a sudden loss of available memory. Over the course of about 35-40 minutes the available memory drops until the OS is unable to ...
DB_2022's user avatar
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0 answers
612 views

How to monitor memory usage of all processes individually (in Windows)

I looked through the forum suggestions for my question but they were all Unix-based. I'm trying to troubleshoot a Windows Server 2019 system that keeps locking up due to a "lack of resources"...
DB_2022's user avatar
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-1 votes
1 answer
356 views

Is there a way to monitor remotly multiple windows server for hardware performance? [closed]

We have 5 server installed as VM with "Windows Server 2016" on VMWware. These servers are configured as RDS, means multiple users are working on it. Users which are connected on these ...
Baku Bakar's user avatar
0 votes
1 answer
291 views

How to monitor ubuntu server resources consumption history

I'm working with a new web application installed on Ubuntu 20.04 server. The web application is still in testing status and I need to check if the machine resources are enought during the day. How can ...
Tobia's user avatar
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2 votes
1 answer
339 views

Windows Server Command Line for Remotly Measure Data Disk IOPS,CPU,RAM Monitoring

I want to measure data usage like IOPS, CPU, RAM ,Capacity ,Bandwidth ETC from Remote Server. I Know, that it is possible to measure it localy with the Typeperf Command. However, again, i want to ...
StackBuck's user avatar
  • 133
0 votes
1 answer
943 views

Comparision trigger in Zabbix

I got two items created for showing certain values. One of them is shoving value from today and the other one from week ago. How can I create trigger that compares them and alert when one of them is ...
Golompg's user avatar
0 votes
1 answer
488 views

Monitoring Byte Usage of Large MySQL InnoDB Buffer Pools?

I am trying to monitor the total number of used bytes in a MySQL 5.7 InnoDB Buffer Pool, that can go up to 100GB, using Innodb_buffer_pool_bytes_data but it seems that this status variable is a 32-bit ...
Vjz's user avatar
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0 answers
320 views

Apache crashing because of high memory usage

CPU[|||| 3.3%] Tasks: 71, 155 thr; 1 running Mem[|||||||||||||||||||||||||||||||||||||||||||||||||1261/1875MB] Load average: 0.00 0.02 0.01 ...
Sayaman's user avatar
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1 vote
1 answer
859 views

How to write pidstat output to a sadc file for analysis later (sar)

How can I write the output of pidstat to a file for analysis later? In sar, you can monitor usage and write-out to a file for later analysis using the -o argument. From the man page: If ...
Michael Altfield's user avatar
-1 votes
1 answer
103 views

Obtaining the CPU L2 shared memory percentual of usage on Linux machine

On Linux based systems, how can I estimate or maybe read the CPU L2 shared memory % of usage?
Duloren's user avatar
  • 107
1 vote
0 answers
89 views

What defines the "interval" when playing back Performance Co-Pilot data in pcp-atop?

I have PCP (Performance Co-Pilot) recording performance metrics on a RHEL 7 host. The recording cadence is set to Y seconds here: /etc/pcp/pmlogger/control.d/local When I copy the performance metrics ...
Dennis Dragonbain's user avatar
1 vote
1 answer
510 views

MySQL RDS Performance Insight got stuck

We are using AWS MySQL RDS. Quite recently, we are saw MySQL RDS Performance Insight got stuck with SET `@slave_uuid` = ? Like the following image The second one that follows the above is Use `...
Set Kyar Wa Lar's user avatar
0 votes
0 answers
105 views

Monitoring (summarizing) network usage of a single application (process) (Linux)

I have a single application that seems to be a network pig (based on a casual glance at its logs - it seems awfully chatty). I'd like to find out what its bandwidth usage is - preferably in the form ...
davidbak's user avatar
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-3 votes
1 answer
42 views

Is there a program to diagnose and summarize why my mchine is slow? [closed]

Is there a program that will tell me why my server is slow? What is being over utilized? CPU / Memory / Disk / Network ... and what processes are driving that utilization? I want a program that can ...
9mjb's user avatar
  • 95
0 votes
1 answer
173 views

How can I isolate resources from a VM in VMware-Esxi to do load testing? [closed]

We have some web services running on a VM in VMWare-ESXi. We would like to see how the system behaves under certain amount of users. How can we configure the VM to provide accurate results without ...
nck's user avatar
  • 129
0 votes
1 answer
50 views

Double call to root path "/" in a website

I'm checking my web page performance, but some strange reason it double calls to root path. Any idea why this is happening? Thank you.
Mauricio Reyes's user avatar
2 votes
1 answer
961 views

Reducing idle CPU usage of Windows Server 2019 Datacenter Core VM

I'm moving a few installations to Windows Server Datacenter Core 2019 running in KVM VMs on Linux hosts. My first Windows VM has, when it's idle, a bit more than 32000 VM exits per second, half of ...
Simon Richter's user avatar
1 vote
1 answer
208 views

Monitor the nginx deployed on GKE cluster

I want to monitor the nginx requests (5xx, 4xx, 3xx, 2xx) where multiple applications are running with different domain urls. Nginx is deployed as Kind : Deployment. Is there a way for real time ...
Sai Anjan's user avatar
0 votes
1 answer
853 views

Track outgoing bandwidth usage of single IIS website on my VPS

I want to track OUTGOING bandwidth consumption from a single website in IIS to my site visitors (no internal traffic), e.g. CSS, images, HTML. The reason is that I want to know which package would be ...
Adam's user avatar
  • 287
1 vote
2 answers
203 views

How to setup Server to Monitor Resource Usage Over Period of Time & Generate Report

I am working on a research project and we usually start a job on a server and it takes about a day or two to run and then we go and look back at the results. The problem is that in some cases we are ...
Jeremy W.'s user avatar
  • 113
-1 votes
1 answer
4k views

The causes for frozen server

We built one windows 2012R2 server (it has enough free memory/disk space, high performance of CPU), but it would be frozen for around half hour every 12 hours. The symptoms: couldn't access the ...
Sphinx's user avatar
  • 161
0 votes
0 answers
45 views

Determine number of Kubernetes CPUs utilised over time

I have spent a bit of time in Kubernetes monitoring on GCP (https://cloud.google.com/stackdriver/docs/solutions/gke/observing) and cannot find where to see how many CPUs were used by a particular ...
Sinker's user avatar
  • 101
0 votes
1 answer
446 views

How to load one physical CPU in a system with virtual cores?

I have an AMD processor with 4 physical cores and SMT enabled. Because of the latter, I see 8 virtual cores in a Linux box. For example, stress command can spawn a number of workers spinning on sqrt()....
mate200's user avatar
2 votes
3 answers
3k views

NVMe disk problems - smartctl 0x2002 status

My NVMe disk works but it is very slow compared to what it was. I benchmarked it 6 months ago at 2000MB/s using fio, the exact same test now is giving me 350MB/s I ran smartctl but it's giving a ...
GCPuser's user avatar
  • 23
0 votes
2 answers
108 views

Is it "common" for an IT department to provide a Network SLA to the business internally? [closed]

Service Level Agreements (SLAs) are pretty common when services are being purchased, we all expect that our business grade ISP, cloud providers, etc will offer a guarantee of 99.9% uptime, X amount of ...
tremor's user avatar
  • 143
1 vote
1 answer
148 views

Can Performance Co-Pilot serve as a standalone NMS solution?

I was wondering whether Performance Co-Pilot (PCP) be set up in the way that it has all the features of NMS application, ie. Nagios or Zabbix. I was using it to extract metrics from a host and plot ...
mac13k's user avatar
  • 143
1 vote
1 answer
1k views

pidstat: difference between task and process?

The pidstat command has options relating to tasks and others relating to processes (e.g. -C and -G). What's the difference?
Xaser's user avatar
  • 223
3 votes
1 answer
163 views

ESXi (Free Versions) Notifications when there is sustained high CPU usage

I'm looking for a way to have the free version of ESXi notify me (Email is fine) when CPU usage is over 60% for at least 60 minutes. Generally, my CPU usage is around 25%. If it stays high for a ...
EfficionDave's user avatar
1 vote
0 answers
246 views

Variance in memory reported with perfmon vs Task Manager in Windows

I am recording Memory\% Committed Bytes In Use with perfmon every 15 seconds but I see that it doesn't always tie to task manager's reported memory %. They almost always tie but when memory starts to ...
vizyourdata's user avatar
1 vote
0 answers
861 views

Monitoring SLA/SLO/SLI using Prometheus

I have done much research about monitoring SLI metrics with Prometheus. I have found only how to monitor a cluster using Kubernetes. I'm hoping to find a response here for simple monitoring. I also ...
Hasagiii's user avatar
  • 111
2 votes
1 answer
2k views

AWS CloudWatch alarm not populating data points - Insufficient state always

I am configuring CloudWatch alarm from the custom metric. Custom metric for disk space is configured, and I can see that every 5 minutes I am able to see the data. But when I set the alarm, the data ...
serverstackqns's user avatar
0 votes
2 answers
1k views

Slow initial connection to database (php / mssql)

Our webserver and database server are on a local network and the webserver uses an IP address to connect to the database. $con = new \PDO('sqlsrv:Server=10.200.2.1\sql2017;Database=dbname, $user, $...
Hugo Delsing's user avatar
3 votes
5 answers
4k views

Rsync to /dev/null overwrites it

I am seeing a random behavior when copying from one server to another using rsync to the /dev/null of the destination server. This is as part my network performance testing, and I want to avoid Disk I/...
Eilbron's user avatar
  • 31
8 votes
1 answer
2k views

How to record and replay htop?

TL;DR Is there an option to run htop in a way that will generate some report and the load it using htop later? Similar to perf record and perf report. I'm a big fan of htop. I use it quite a lot when ...
kfir's user avatar
  • 111
3 votes
0 answers
1k views

How can I count EC2 instances over time in AWS?

I want to know the number of EC2 instances I have running over time. I am able to view this data from the following menu: ec2 dashboard Auto Scaling Groups select my group from the table of groups ...
auerbachb's user avatar
  • 131
4 votes
1 answer
4k views

how to gracefully kill linux perf tool process

I'm trying to use the linux performance tool perf to monitor kvm events on a host where a guest VM exists. The command I invoke perf is perf kvm stat record After some time, I'll press Ctrl + C to ...
Michael Tong's user avatar
0 votes
1 answer
256 views

How to identify the source of growing blocked processes on a system container (LXC/OpenVZ)

When the number of blocked processes grow indefinitely, how to identify exactly what are these processes. Since I'm inside a system container (LXC/OpenVZ), I can't modify the hosts' kernel modules to ...
Paulo Coghi's user avatar
1 vote
0 answers
149 views

Profiling CPU, memory, networking performance and generating reports

Background I have a performance-intensive (i.e. consumes a lot of CPU cycles, memory, and network resources) application. Multiple instances of this application, along with some third-party vendor-...
Cloud's user avatar
  • 425
18 votes
6 answers
15k views

Why the discrepancy between Speedtest and Wget?

My customer complains about low internet speeds. When measured with Speedtest.net speeds are acceptable. Periodic measured downloads are 10% to 30% of the nominal speed. I cannot explain that. Some ...
Johannes Linkels's user avatar
1 vote
0 answers
1k views

Unexplainable high load average on a QNAP NAS

we have two QNAP TS-1635 NASes (one per location), running at identical configuration and firmware versions. However, one of them has ever higher and higher load averages and actually needs to be ...
Marco Schuster's user avatar
0 votes
0 answers
71 views

Icinga configuring error

After configuring Icinga host list in host conf i got error like root@server scripts]# icinga2 feature list Disabled features: api gelf influxdb opentsdb Enabled features: checker command compatlog ...
Venkatesh P's user avatar
0 votes
0 answers
199 views

High wa but no IO usage

My VPS is having extremely high wa (around 90), but there is no IO usage taking place. htop: iotop: nethogs: What can be the problem here?
HappyFace's user avatar
  • 161
1 vote
2 answers
819 views

Can a high load on a VPS be caused by the underlying infrastructure?

My VPS started to have random stints of high load (around 2-3, but the system becomes extremely slow, running ls takes like 30 seconds). I hadn’t changed anything on it, there was pretty much nothing ...
HappyFace's user avatar
  • 161

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