The load-testing tag is for issues relating to the setting up or running of load tests.

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How to get what IP Address Ranges used by Visual Studio Online Load Testing Agents?

I need to setup IP Whitelisting in an environment that I need to run some Visual Studio Online Load Tests on. I was able to find some documentation as to what IP Addresses Visual Studio Online ...
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1answer
9 views

Diameter traffic generator [closed]

I am in a hunt for a Diameter protocol simulator / traffic generator. It needs to be robust, actively maintained, well documented and portable (Solaris and Linux OS is expected). The goal is to ...
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1answer
49 views

Increase bandwidth per connection on a server

Requirement: I am load testing Rabbit MQ by generating a large number of requests/sec to the server (Server config: 8 core, 16GB). To achieve the above, I am generating load from a client machine at ...
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1answer
62 views

HAProxy max out at ~10,700 connections

I am stress testing ejabberd with Tsung. My EC2 instances setup as follows: Tsung : c3.xlarge ejabberd : c3.2xlarge HAProxy : t1.mirco When I let Tsung talk to the ejabberd instance directly, I ...
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1answer
346 views

Why are 32-bit application pools more efficient in IIS? [closed]

I've been running load tests with two different ASP.NET web applications in IIS. The tests are run with 5,10,25, and 250 user agents. Tested on a box with 8 GB RAM, Windows 7 Ultimate x64. The same ...
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1answer
244 views

Monitoring “Request Wait Time” in PerfMon

A website I'm load testing is adding requests to the iis request queue. I can see the queue size getting bigger using the relevant performance counter: \ASP.NET\Requests Queued However I'm trying ...
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1answer
48 views

how to benchmark an ubuntu webserver using Jmeter and create a test report.?

I have an ubuntu webserver(LAMP) running a clients website.I have already created a test plan with jmeter, what i would like to know is how would we benchmark the server with Jmter and create a test ...
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0answers
344 views

HAProxy configuration for RabbitMQ

I have an API that sends messages to RabbitMQ. I have a high availability RabbitMQ cluster behind HAProxy. When I load test my API I start seeing lots of this: Recovering from a network failure... ...
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2answers
541 views

Advice for simulating a high load on a web application — realistic httperf parameters

I have already selected httperf as the load testing tool to use. I'm trying to figure out some realistic parameters to use, and if I need to use multiple machines to create more simultaneous ...
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0answers
45 views

emulate shared hosting load

I want to emulate some shared-hosting activity in testing environment. Is particularly interested I/O performance. Need to emulate: many sql queries, http queries, and some additional activity, ...
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0answers
356 views

Load testing HTTPS with Siege (open auth)

I am trying to load test our new website with siege. It is currently behind basic auth. I have edited my .siegerc file to include the right username and password (I've checked many times that it is ...
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0answers
78 views

How do I interpret this 'siege' load test results?

I'm performing some stress tests to a server with siege (v3.0.0), and I want to get back the following information: Number of requests that returned a status code < 400 Number of requests that ...
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2answers
73 views

How long/how hard should I stress test CPU and memory before declaring it OK?

One of our Dell PowerEdge LCDs was showing "CPU 2 machine check error", but I couldn't find anything in the logs regarding MCE or "Hardware Error." I cleared the message, but I wanted to run the ...
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1answer
104 views

Simple tool to test Amazon EC2 instance throughput?

I'm looking for a way to test the bandwidth throughput of a c3.8xlarge instance. I have two c3.8xlarge instances set up, so I imagine I could use the other to simulate the traffic. What's the ...
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2answers
43 views

How to limit disk performance?

I am load-testing a web application and studying the impact of some config tweaks (related to disk i/o) on the overall app performance, i.e. the amount of users that can be handled simultaneously. ...
0
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1answer
247 views

How can I determine Breaking point of my Web application using JMeter?

How can I determine Breaking point of my Web application using JMeter? I have executed the JMeter Testplan with different concurrent users load. EX. 300 users(0% error), 400 users(7% error in a ...
1
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1answer
193 views

Continuous hits to the server with Jmeter

I have 100 threads in JMeter which I want to hit a server 12 times in a loop. But each time 100 threads will run and pause for 5 seconds and then resume hitting the servers for next 100 times. Here ...
4
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1answer
153 views

How can I safely estimate the max # of users based on a load test measurement like max hits/second?

In my specific case, I am working with websites, however the question is more general than that. What I’m looking for (I think) is something like a formula. The situation is that I’ve already done ...
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4answers
14k views

How to generate CPU load on Linux server

I would like to test fake load on the server, I'm looking for some burn-in or benchmark command line utility that would generate CPU load on the system. I would like to be able to burn-in only CPU ...
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7answers
42k views

How can I monitor hard disk load on linux

Is there a good command line utility to monitor hard disk load on linux? Something like top but then monitoring disk activity i.s.o. cpu usage. More specifically, I suspect that for some (heavy load) ...
0
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1answer
58 views

Load Testing a Security/Gateway Appliance

In a couple weeks I will load testing a security/gateway appliance. We're a small residential college, and that "residential" means the traffic moving through the appliance is a bit like the Wild ...
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5answers
4k views

How many simultaneous requests would you expect a webserver to handle

I know there is no straight answer to this question - depends on specs etc. But what is the order of magnitude of simultaneous requests you'd expect a server to handle? Currently, our server starts to ...
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3answers
7k views

How do you do load testing and capacity planning for web sites?

This is a canonical question about capacity planning for web sites. Related: Can you help me with my capacity planning? How do you do Load Testing and Capacity Planning for ...
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11answers
21k views

Tools for load-testing HTTP servers?

I've had to load test HTTP servers/web applications a few times, and each time I've been underwhelmed by the quality of tools I've been able to find. So, when you're load testing a HTTP server, what ...
17
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1answer
2k views

How do you do load testing and capacity planning for databases?

This is a canonical question about capacity planning for databases. Related: Can you help me with my capacity planning? How do you do Load Testing and Capacity Planning for Web ...
2
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3answers
787 views

stress test video streaming [closed]

is there a way to stress test video streaming? Basically simulating a high number of people simultaneously streaming a video? This is an amazon 'cloud' service that will be enabled for my site.
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2answers
714 views

Automated Load/Stress testing via a continuous integration server

My company currently has stress tests that are run manually through JMeter. We also use TeamCity for automation of JUnit testing. It's become clear that we need to automate our stress testing as well ...
2
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1answer
1k views

Inefficient CPU usage by Tomcat

I am using tomcat to convert pdf to png. I was using Jmeter to load/throughput test the app using a Intel(R) Xeon(R) CPU X5550 @ 2.67GHz server which has 16 hyper-threaded cores. Tomcat6 had 2gigs of ...
2
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2answers
430 views

Does mysql connection error count ever flush or will the host eventually get blocked?

During performance testing of our application I found that under extreme loads one problem that can occur is the occasional mysql connection error (i.e. at this stage I don't believe it is fair to ...
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2answers
1k views

How to test a site with multiple concurrent users from various IPs (load test)?

I need to test a site and how it handles several connections simultaneously. Each user must: Connect from a different IP address Simulate a browsing user --> (open a few pages, click a few buttons) ...
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0answers
71 views

Configure SilkPerformer to work with Fiddler

Does anyone know how to capture a Silk Performer HTTP request, using Fiddler? We can't seem to capture this information no matter what we try (it seems like it ignores all proxy settings).
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0answers
53 views

nginx+mysql5 loadtesting configuration strangeness

i am trying to setup a new server running on debian6 and trying to make it work smooth under load. i ve used a wordpress site as a test object, and tried the configurations on http://blitz.io. when i ...
2
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2answers
359 views

CPU, Memory, Network, IO resources are under utilized when I tried various JMeter load testing

I am trying to assess the performance of my web server which has Linux and Apache. I tried load testing using JMeter, and gradually increased the number of requests and recorded the response time as ...
2
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2answers
87 views

When load testing, is network 'distance' a factor?

I have a server application running on EC2 behind a Elastic Load Balancer. I have tested this using Blazemeter - a jMeter based load testing service that also runs on EC2 based infrastructure. The ...
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4answers
5k views

How can I replay Apache access logs back at my servers to do real world load testing?

I looked at http://serverfault.com/questions/2107/tools-for-load-testing-http-servers but I couldn't see how to replay my own existing logs in any of those tools. I have a bug that only occurs under ...
0
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1answer
248 views

Load testing nginx inside AWS

I'm trying to load test nginx running on AWS. I need to try to optimise it to handle 1Gbps of inbound traffic. Currently I've got it to peak at 85Mbit/s by running nginx on an m1.large with 4 other ...
0
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2answers
194 views

Load/stress testing methodology. What to expect and how to interpret results?

We have this new client for whom we're reviewing our server infrastructure. I know pretty well the web API because I've helped building it and now I'm on my own maintaining and pushing it forward, so ...
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3answers
714 views

Virtualbox HTTP load testing, host CPU overload issues

I'm doing HTTP load testing benchmarks (using Apache Benchmark and Siege) on a small Java EE 1.7.0 / Tomcat 7.0.26 application running on a Debian Squeeze 6.0.4 x64 virtualized with Virtualbox 4.1.8. ...
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0answers
192 views

Stress testing Django app - how to improve throughput?

I'm having my first attempt at stress testing a simple django web app running from gunicorn and nginx which I’ve put on a small 256MB Rackspace Cloud server. Using httperf, I increase the number of ...
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1answer
374 views

How to test HTTP Requests/sec + CPU + RAM usage?

Trying to evaluate the requirements of my Web application, I wanted to put it under load and at the same time check how it scales on memory and CPU. But running AB/HTTPerf and htop/"pidstat -C" in a ...
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5answers
23k views

How many requests should my webserver be able to handle?

Not going into specifics on the specs since I know there is no real answer for this. But I've been doing load testing today with the ab command in apache. And got to the number of 70 requests per ...
2
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3answers
565 views

Is there a service that simulates high traffic using data from log files?

I need to test a saas service load by sending 1000s requests/sec from multiple remote sources. The urls need to be from my access log. Is there a service that does that?
0
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1answer
71 views

Windows Memory being freed before limit is hit during a load test

I'm running a load test on a .NET web application over a LAN. The server hosting the web app is a VM, Windows Server 2008 R2, with 2 GB of RAM and a 3GB limit for virtual memory. No other web ...
2
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1answer
206 views

ab Failed Requests

I've built a simple apache + django + mod_wsgi webapp that I am testing on my local machine. I've started load testing it using ab - and I am seeing a few failed requests. ab -n 500 -c 100 ...
0
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1answer
262 views

SonicWALL SRA blocks load test as a DoS attack

I am evaluating the Web Application Firewall (WAF) service on a SonicWALL SRA virtual appliance. When I try to load test the protected website, SonicWALL blocks my requests with this error: "Reset ...
3
votes
3answers
1k views

Load testing sites behind an EC2 load balancer with ApacheBench

When ever I try to load test a site that is load balanced on EC2 I get the following message: ab -n 20 -c 20 http://www.somesite.com/ Benchmarking www.somesite.com (be patient)...Send request ...
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0answers
126 views

Performance and Resilience testing DNS servers

We are going to run a DNS server in our company and we want to test it before we allow our users make DNS requests using the server. I want to be able to simulate huge load on the DNS server and I ...
2
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4answers
6k views

MySQL load/stress testing

I am going to do load testing on mysql server, could someone recommend good metrics to concentrate on? Any automated way(read software) of getting/tracking them? Thank you!
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1answer
130 views

What hardware factors may be considered bottlenecks on a Hyper-V virtual server during load testing? [closed]

Our organization is load testing our application using virtual servers via Hyper-V to see what the user load can be using fair equipment on a single box setup. The developer group questioned the ...
0
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3answers
947 views

Interpreting SQLIO test results

I've been running a series of load tests on a dedicated DB SAN from a pre-production cluster (Dell R710 connecting to a dedicated RAID10 SAN over 2 gigabit ethernet connections), and I'm not sure if ...