Questions tagged [performance-monitoring]

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

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1answer
21 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?
3
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1answer
48 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 ...
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0answers
6 views

Monitor performance of IIS UrlRewrite Extensibility Sample SQL Custom Rewrite Provider

I've implemented the SQL provider from IIS UrlRewrite Extensibility Samples and it seems to work well, but I'm wondering about the performance impact of IIS calling a stored procedure on an Azure SQL ...
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0answers
21 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 ...
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0answers
82 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 ...
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0answers
27 views

What do the various “fit” algorithms mean in Kibana?

In Timelion visualisations in Kibana there is the option to interpolate/upsample an infrequent measurement, i.e. "invent" samples in the empty timestamps between known values to fill out a line plot. ...
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0answers
62 views

How to view CSV performance log formatted with one counter per line?

Short: How can I view a CSV performance log formatted with one counter per line? Details: Some process I don't control provided me with a csv performance log that looks like this: "TimeStamp","Path",...
2
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1answer
345 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 ...
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1answer
147 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, $...
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0answers
13 views

Recording Window Name on Perfmon

Under the manual configuration window in Perfmon, it is possible to select counters that record at the instance level (e.g. record Microsoft Excel usage). Is it possible to further disaggregate this ...
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3answers
655 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/...
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30 views

SVN server performance and Load testing

What is the best approach to perform Load & Performance testing on SVN server which is configured for http? Are there any tools/Frameworks available? As there are no recommendations for SVN ...
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27 views

Windows performance counter returning strange value

When asking the value for the performance counter [\Terminal Services\Active sessions] the Windows Server 2019 sometimes returns values like 3.616667, 6.800000 or 6.766667. How is this possible?
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1answer
219 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 ...
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0answers
41 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 ...
2
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1answer
448 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 ...
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1answer
89 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 ...
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0answers
42 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-...
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6answers
7k 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 ...
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0answers
499 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 ...
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0answers
39 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 ...
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0answers
72 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?
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2answers
249 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 ...
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0answers
138 views

How to get PCI Tx/Rx byte counters?

I know how to read statistics about the configured network interfaces, for example via cat /proc/net/dev. Is there a way to read similar byte counters of PCI or PCIe traffic? Apparently, according ...
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1answer
2k views

Windows Performance Monitoring - “Packets Received Discarded” Never Changes

I wrote the following short PowerShell script to help diagnose some performance issues on a server: $counters = @("\Process(*)\% Processor Time","\Process(*)\Working Set","\Process(*)\IO Read Bytes/...
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5answers
880 views

Configure JMeter to test a proxy service

I have developed a proxy service using ballerina language by referring the following [1] and [2]. It works perfectly fine. Now I want to run a load test via JMeter. That is JMeter should be configured ...
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2answers
1k views

How to backtrace slowness of a shared hosting web server

I have a shared hosting plan (godaddy), and time to time I suffer slowness problem. When this happens, I try to login to cpanel to double check if the problem is me or the server, and it also takes 1-...
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0answers
18 views

How to sort the system calls by frequency generated by the perf command?

I have collected the perf syscall events using the perf tool by executing the command perf record -F 99 -e 'syscalls:*' -p <pid> The perf report command displays the system calls and its ...
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2answers
49 views

Can Perfmon be configured to survive a hard-reset or flush reports on the go?

I am having trouble configuring perfmon here (Windows Server 2016 if it's relevant). My situation: our server recently get random hit and we are diagnosing the problem, so I put a Data Collector Set. ...
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1answer
755 views

iperf3 UDP not reliable with iptables drop random

I'm performing some local test on my network with iperf3 using UDP connections between 2 Ubuntu 18.04 hosts. But it seems that the UDP iperf3 connections it is not robust to support a random packet ...
3
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1answer
1k views

How to get load average in Windows

In linux by "uptime" command you can get the load average in last 15 minutes. But how to get that in windows? Many had suggested alternative found here. But it is about CPU utilization where load ...
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2answers
925 views

docker container linux-tools-generic package

My goal is to use perf to run performance tests on some Docker images. By default, the images I'm using don't come with perf. As such, I tried apt-get update apt-get install linux-tools-generic to ...
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1answer
41 views

What's the significance of the *initially* displayed data when launching atop?

I've just started using atop to try to get to the bottom of some system bottlenecks. I've found https://linux.die.net/man/1/atop which is very useful and explains most of what it does just fine. ...
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1answer
34 views

Azure reporting metrics via powershell driving the Stop-AzureRmVM command

Good afternoon all, I am apparently in search of a unicorn. I've been through Azure Metrics, not wide enough... I've been through automation and the automation library... nada I have a basic ...
4
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3answers
6k views

sar: enable data collecting

I've just installed the sysstat package on Manjaro. When running sar for the first time I see: Cannot open /var/log/sa/sa21: No such file or directory Please check if data collecting is enabled How ...
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1answer
1k views

Docker performance monitoring - how to query I/O busy time and exact block reads/writes?

The "docker stats" command provides some basic info about containers. For example: CONTAINER ID NAME CPU % MEM USAGE / LIMIT ...
2
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0answers
137 views

Cant remote manage server “Access is denied”

Im trying to work with performance monitor on windows server 2016 core. I have my PC a VM a new or was atleast new Installation of server core and i got some other VMs running. All im trying to do is ...
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1answer
683 views

Performance monitor access is denied

I've been seaching for about the last 5 hour about perforamce monitor and how it works, and it has been a pain. I'm trying to get Performance monitor working on Windows Hyper-v Server 2016. I also ...
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1answer
1k views

Does Azure allow to monitor RAM and CPU usage of an on-premises server?

I have an on-premises server and an Azure MSDN account. I heard that Azure supports the concept of a hybrid cloud where some server may be on-premises, not sure if I understand it correctly, though. ...
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1answer
102 views

How can I access steal time data in Solaris SunOS 5.10

I think that the version of Solaris that we are running is too old to report steal time in top. Is there a way to get this information on this older version of Solaris. Here is the basic version ...
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1answer
423 views

What is the most accurate way of measuring cpu utilization of processes in Windows based systems

I have been trying to find out the best way to measure the CPU utilization of processes in a Windows Server 2012R2 system and I found out that there are many inconsistencies among the methods used to ...
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1answer
95 views

Diagnose Sudden Slowness on Linux

I have two identical Linux laptops (Core™ i7-4810MQ with 32GB RAM) both running Ubuntu 16.04. Running seemingly any command on machine 2 takes about 4-12 times as long as on machine 1, depending on ...
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1answer
2k views

High response time on Azure Web App

I have developed a RESTful api that I deployed on Azure Web App. While performing the load test using JMeter, I see that the response time is huge i.e ~18secs. This response time appalls me because ...
0
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1answer
252 views

Performance counter files in Windows Server 2016 are limited to 2 GB in size

We want to record performance counters in files up to 6 GB in size. This worked on Windows Server 2008 R2 but on Windows Server 2016 the recording stops when the file has reached in 2 GB in size. We ...
8
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6answers
3k views

At what point is a server considered idle?

Conceptually, what is the definition of an idle server? What resource metrics would you look at to make an assumption on whether or not a server was idle? Would you look at: CPU utilization Disk ...
1
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2answers
148 views

Track User CPU usage for a period of time

I need to track amount of processes that a single user invoked and how much CPU-time (or % ) these processes consumed for a given period of time. The trick is that each of these processes normally ...
2
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1answer
526 views

Measuring Only Page Faults That Reach the Disk

I would like to measure "truly" hard page faults, i.e. page faults that result in a disk IO. It looks as if Memory\Page Reads/sec might do the trick, but as was explained in this answer, the page ...
3
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1answer
3k views

Performance Monitor: Memory\Page Faults/sec vs Process\Page Faults/sec

When I was investigating some Hard Page Faults I came across this. Objects Memory & Process give different value's from the same counter: Page Faults/Sec. Are there some OS related processes that ...
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1answer
85 views

How to monitor EMC VNXe3200? [closed]

Currently, I'm using Solarwind to monitor my system, but VNXe can not. Any solution to monitor this? I just get a notification via email or SMS when my disk or array is failed. Thanks.
8
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1answer
164 views

Windows / NTFS - is it possible to measure completion time of file operations?

I'm looking for possibility of measuring how much time it takes to finish file operation issued to NTFS driver (open file close file delete file, write, read etc) and to be able to log it. I can't ...

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