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Questions tagged [performance-monitoring]

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

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typeperf disk write log interpretation

When running typeperf utility to get total disk write. typeperf -si 2 "\LogicalDisk(_Total)\Disk write Bytes/sec" I get results in the format "01/11/2019 01:29:40.674","58066.696363" what is the ...
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15 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
29 views

Process level performance monitoring in Windows 2008 R2 / Windows 7

How do you normally monitor intermittent performance problems? I would normally use task manager which is great to see current system state. Then perfmon counters for getting system vitals from the ...
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22 views

nginx: Expose number of requests pending for an upstream server

I'd like to monitor an nginx instance, specifically tracking the number of requests an upstream backend is currently processing. This is important to me since the specific backend has a limit on the ...
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0answers
12 views

Performance monitor triggering a batch script

I've created a batch script which once triggered it'll send myself an Email, the issue i'm having is i'm trying to set up performance monitor to trigger the batch file if CPU usage has been over 80% ...
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0answers
27 views

SQL Server 2008 R2 slow performance on OS level

finally decided to reach out here for help regarding an SQL server performing really slowly. It's pretty similar to another question below that have been asked previously. (Windows Server 2008 R2 ...
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21 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
34 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
78 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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60 views

Disk access too slow in ubuntu virtual server

I have an ubuntu 18.04 virtual server, and I believe there is something wrong with the disk access. opening normal small files takes a long time and websites frequently time out without any specific ...
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1answer
113 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
123 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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10 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
31 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
147 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
189 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
173 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
27 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
26 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 ...
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3answers
954 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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0answers
53 views

Mapping a PID to w3wp# in data collector sets

I am trying to create a data collector set with a couple of memory counters for an IIS 7 worker process. I know the PID for the worker process. But in the Performance Monitor data collector set ...
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1answer
311 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 ...
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0answers
78 views

Windows Server 2016 - Pages per second and non paged block of memory

We have a Windows Server 2016 with only AD role and remote conections. There is no SQL server installed, only basic software. It has 16 GB of RAM and even when only the admin session is active we get ...
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0answers
61 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
241 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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0answers
9 views

Perfmon counter included in collector set but does not appear in log

I created a perfmon collector set to track a number of server counters including Paging File/%usage. In total, the set includes about 25 performance counters. The resulting log file contains a value ...
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1answer
424 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
71 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
59 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
55 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
665 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 ...
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1answer
161 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 ...
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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 ...
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0answers
121 views

IIS Server Performance Counters For Requests Do Not Add Up

I am using perfmon to monitor request behavior on the IIS server. But as can be seen in the following graph, Requests Queued plus Requests Executing do not add up to Requests Current. What is missing ...
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2answers
71 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 ...
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0answers
18 views

White-box monitoring with PandoraFMS

I'm searching for replacement of ELK stack and looking and PandoraFMS but I can't figure out how to implement next scenario. Some of my services sends metrics from the code. For ELK there are ...
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1answer
114 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 ...
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1answer
902 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
47 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.
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255 views

Maximum cpu performance mode, configure in BIOS and/or the S.O?

I`m running a database benchmark (Tpc-h), and running a same SQL query several times. To my surprise, the time spent has a significant difference, even though it is the same query, reaching up to 40% ...
8
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1answer
146 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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1answer
217 views

How to guarantee CPU time for VPS?

I offered VPS and with virgin Debian it often hangs: simple ssh command responds too long. It is bad :( I made benchmark for it: every 2 minutes it starts ffmpeg to convert 30 seconds low quality ...
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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 ...
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1answer
172 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, ...
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0answers
49 views

perf-events not showing StackTraces on debian 8 jessie

I am trying to profile a simple C program with perf-events on debian 8 jessie. I can see symbols but I am unable to get stacktraces. The same procedure generates good stacktraces on ubuntu 16.04. I ...
6
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1answer
721 views

Disk Queue length of 30 in Azure App Service, that can't be right

We are having a battle with the Microsoft Azure support team. I hope the Serverfault community can chime in as the support team has messed us about before. Here is what is happening. As part of a ...
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1answer
347 views

Is there a better way to analyze Varnish hit rate

I currently analyze varnish hit rate like this While this is good, a major part of the request the server services is non-cacheable. This brings down the hit rate drastically. How can I modify this ...
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1answer
769 views

Configure Windows Server Performance Monitor to create new log for every day

I want to config my "Data Collector Set" to create a new log file each day instead of appending logs from this day to existing log file. I configured the schedule to run every day at specific time, ...
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1answer
2k views

PHP loads slow on nginx server

I have a php application with 815k monthly unique users which loads pretty fast on my dev machine ( around 600 ms for the home page ), and used to load fast on the production server. I am not a ...