metrics is are a way to measure things.

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18
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2answers
2k views

Is there a Windows equivalent of Unix 'CPU steal time'?

In order to assess performance monitoring accuracy on virtualization platforms, the CPU steal time has become an increasingly relevant metric - see EC2 monitoring: the case of stolen CPU for an ...
15
votes
2answers
7k views

What is the difference between OpenTSDB and Graphite?

As far as I can tell, here are the main differences: OpenTSDB does not deteriorate data over time, unlike Graphite where the size of the database is pre-determined. OpenTSDB can store metrics per ...
12
votes
9answers
1k views

When to move a virtualized server to physical?

Virtualization has some great benefits, but there are times when a virtualized server needs more performance and should be moved to physical. My question is, how do you tell when these times are? I'm ...
11
votes
8answers
1k views

Looking for a recommendation on measuring a high availability app that is using a CDN

I work for a Fortune 500 company that struggles with accurately measuring performance and availability for high availability applications (i.e., apps that are up 99.5% with 5 seconds page to page ...
7
votes
5answers
7k views

I need to replace munin with something more scalable [closed]

I have used munin on multiple servers for many years with great success, however with more than 100 munin-nodes and when there is load on the clients, the processing is timing out. I have made some ...
7
votes
1answer
533 views

Graphite stops collecting data randomly

We have a Graphite server to collect data through collectd, statsd, JMXTrans ... Since a few days, we frequently have holes in our data. Digging through the data we still have, we can see an increase ...
5
votes
3answers
192 views

How to compare CPUs?

What are the metrics and their priorities to compare task specific performance of various CPUs?
4
votes
2answers
679 views

How to compare CDN services?

What are the metrics and their priorities to compare various CDN services?
4
votes
4answers
3k views

How to define appropriate measurements for a Service Level Agreement?

I work for a small development house who are increasingly being asked to put together formal SLAs for our products based on particular configurations. From a development side of things I'm ...
4
votes
2answers
3k views

Tracking Apache by VirtualHost

I have an apache webserver running many VirtualHosts. Recently it has been bogging down and becoming unresponsive, and I'm wondering how I can determine which VirtualHosts are causing most of the ...
4
votes
4answers
2k views

Monitoring tools that can take high rate and high volume? [closed]

We're using Cacti with RRDTool to monitor and graph about 100,000 counters spread across about 1,000 Linux-based nodes. However, our current setup generally only gives us 5-minute graphs (with some ...
3
votes
2answers
98 views

Routing selection: specificity vs metric

I understand that Linux chooses the most specific route to the destination when it does routing selection. But what about a route's metric? Does it have a higher priority than route's specificity? A ...
3
votes
5answers
3k views

LAMP monitoring by zabbix

Someone have experience with lamp monitoring ? I mean standard monitoring and slow queries monitoring for mysql, virtual hosts load as well. And alerting if something going not well. Cacti is very ...
2
votes
9answers
2k views

Measure data transfer throughput?

How can I benchmark the network transfer speed of my servers? We already have an existing file server, but it is fairly old. We recently got a donation of a (relatively) newer P4 box, and I wanted to ...
2
votes
4answers
1k views

What metrics should I watch when I monitor a server?

I saw a lot of monitoring tools and mostly show the same things. But I'm wondering if it's really necessary to watch all of these things. I would like to know which metrics really matter for example ...
2
votes
5answers
289 views

How can I measure precisely the resources consumed by each Web site on my server?

We are having performance issues on our server which may or may not be the inevitable result of high traffic to our sites. We would like to optimize each site for performance so that we can be sure ...
2
votes
1answer
84 views

Negative Request Per Second observed?

I'm currently looking at my Nagios metrics, and especially on my WebServers and I suddently noticed that sometimes, I've a negative amount of Request per second and other metrics, how it is possible?? ...
2
votes
1answer
733 views

Alternative Ganglia interfaces?

I'm evaluating various metric collection systems and appreciate just about everything in Ganglia, except for the less than clean interface. Does anyone know of alternative Ganglia interfaces or ...
2
votes
0answers
109 views

Solution for graphing application events metrics in real time [closed]

We have an application that parses tweets and we want to see the activity in real time. We have tried several solution without success. Our main problems is that the graphing solution ...
1
vote
2answers
172 views

Calculating IOPS for a single HDD - what am I doing wrong?

So I know there is no standardized way of calculating IOPS for a HDD, but from everything I have read it appears one of the most accurate formulas is the following: IOP/ms = + {rotational latency} ...
1
vote
2answers
535 views

Dealing with redundant Ethernet and WiFi under Windows

What happens under Windows (XP Pro SP3, specifically) when you have multiple network interfaces configured on the same subnet, like when your ethernet is plugged in and your WiFi is active at the same ...
1
vote
3answers
141 views

Monitoring / metric collection for system collectives that change a lot in time (a.k.a. cloud) [closed]

When your server fleet doesn't change a lot in time, like when you're using bare-metal hosting, classic monitoring and metric collection solutions (Nagios, Munin) work well. But if the number of ...
1
vote
2answers
204 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 ...
1
vote
3answers
227 views

Simple tools to quickly capture and graph some arbitrary metrics on a server?

I want something that's quick to set up, doesn't have a lot of dependencies, outputs pretty graphs, and is easily customizable (e.g. calling external scripts that simply output a numerical value). ...
1
vote
1answer
406 views

Are there any packaged “NOC Display” software packages?

I'd like to implement a "NOC Situational Awareness" board ("War Room" displays) with multiple large-format LCD's. I'd love to have different "screens" of information show up on a timed rotation ...
1
vote
1answer
212 views

Tools for gathering metrics about physical environment for use in virtualization/cloud planning?

I'm looking for tools that will work on either Linux/Unix or Windows Server that for a given set of servers in an enterprise environent, will: Identify the server [via hostname, or some other unique ...
1
vote
1answer
56 views

Measure impact of new software on Windows Server

I'm an admin for a small business. I've been asked to give another company my opinion on whether or not our servers have enough available resources to handle the addition of their software. I've had ...
1
vote
1answer
99 views

Ganglia Oracle plugin?

Can't seem to find a good Oracle plugin for Ganglia. I was hoping someone could point me in the right direction? I'm not hugely familiar with Oracle so I'm assuming it exposes the various metrics via ...
1
vote
1answer
165 views

Measuring custom statistics with sar

I have a server application which I think is leaking file handles. I want to track the usage of file descriptors over time on my Linux (ubuntu) server. I've figured out that I can track the number ...
1
vote
1answer
571 views

Graphite Clustered Webapp - Not Sharing Data

I have Graphite setup on three instances on EC2: carbon-relay - relay1.graphite.prod.example.ec2 carbon-cache + webapp - cache3.graphite.prod.example.ec2 carbon-cache + webapp - ...
0
votes
1answer
34 views

What is the counter type for Linux's /sys/block/$DEVICE/stat

What are the counter types for /sys/block/$DEVICE/stat? $ cat /sys/block/sda/stat 8323741 42381356 464031898 19207478 1940738 49062039 408122282 79935459 0 22315734 99172579 Specifically, ...
0
votes
2answers
75 views

Is it possible to find information on apache_mod_php processes under /proc?

I have an apache2 server with apache2_mod_php installed. Is there a way for me to determine from the information under /proc (or elsewhere), which apache processes are currently executing the php ...
0
votes
2answers
60 views

How to judge our scale as a metric for what kind of hosting service I need?

We have a worldwide nonprofit organization which receives a modest amount of traffic (or at least I figure it's modest but I have little to compare against -- enter SF) How do I determine what scale ...
0
votes
1answer
49 views

Redis: INFO doesn't report network/bandwidth metrics?

Is there a way to get network/bandwidth metrics from a given Redis process? Something I missed in the output of the INFO command? Some patch or compile time configuration option? Or would I need to ...
0
votes
1answer
251 views

Sun Directory Server 5.2 performance

I'm using logconv.pl (provided by Sun), to measure performance on my server. These two metrics results, are worrying me a bit: Binds: 192164 Unbinds: ...
0
votes
2answers
213 views

server performance metrics report and practicality

I have a need of preparing web server (apache-php) performance report containing important metrics like CPU usage, disk io, memory usage on user basis. Couple of domains are hosted in the same server ...
0
votes
2answers
2k views

Server 2008, 2 NICs, 2 fixed IPs - big delays using internet

I have an all in one Windows 2008 server, configured with AD/DHCP/DNS/RRAS - all set up with wizards and no specific tweaking. The server has 2 network adapters : one of which ("MyWAN") is plugged ...
0
votes
1answer
214 views

ASP Classic Website Usage Metrics

We have a ASP Classic Web site Running on IIS 6. What is the cleanest way to record the number concurrent users? We need this data over a period of time, and a way to sum it across servers would be ...
0
votes
0answers
27 views

How to calculate counter metrics not in real time

I use a Statsd daemon (bucky) and Graphite to generate counters for several metrics in our organization. Statsd protocol is real-time, meaning that you submit metrics and after an interval it ...
0
votes
0answers
56 views

datatstax opscenter v 4.1.2 short-os collection failed

I've installed Datastax opscenter v4.1.2. It was bundled with Datastax Cassandra Community edition version 2.0.8. I'm running these on Windows Server 2008 R2 64-bit. When I open opscenter all ...
0
votes
0answers
64 views

Ganglia: aggregate metrics from one host

copy of: http://stackoverflow.com/questions/20802925/ganglia-aggregate-metrics-from-one-host For example, 2 instances of 1 process produce some metric using gmetric. They launched on one host: ...
0
votes
1answer
120 views

Monitoring performance metrics from Xen (xend) with Java

I need to write a Java application that is collecting and monitoring (remotely and local) performance informations and metrics from a Xen hypervisor. This Java application should fetch the same ...
0
votes
1answer
29 views

How to distribute multiple executions of an app across many machines

I've got a simulation app (64-bit windows) that runs without any user interaction. This app gathers information and pushes it to a remote MS SQL Server. What I'd like to do is execute this ...
0
votes
1answer
608 views

Reporting Services 2008 SSRS usage metric reporting

We use web trends to track the usage of our web sites, but web trends is currently not capable of reading the logs produced by SSRS 2008. Has anyone figured out a way to modify the file so that web ...
0
votes
1answer
118 views

Configuration Rmetric with Rcov in hudson error

When I attempt to save a job that runs code coverage tests and is configured to publish an rcov report I get the error message listed below and the changes I made aren't saved. This problem cropped up ...
0
votes
1answer
125 views

Exchange 2007: Is there a way to get average number of attachements per day by file type?

I'm curious about the file formats of attachments moving through an Exchange 2007 mail environment. For instance the number of .doc vs. .docx files on average. Exchange Profile Analyzer seems more ...
0
votes
1answer
64 views

Figures on data usage through various Internet protocols?

Given this list of protocols used by the internet does anyone know any way of getting information on the amount of data (or any other usage metrics) for various ones?
-1
votes
1answer
349 views

Tracking pixels, logging/recording impressions?

I'm trying to build a tracking server for banner ads that tracks the ad's impressions. I'm having some trouble with our accuracy. It appears we're missing maybe 20% of the impressions. I'm using a ...