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

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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 ...
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0answers
497 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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0answers
116 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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1answer
83 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
398 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 ...
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1answer
375 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 ...
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3answers
2k 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 ...
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1answer
146 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 ...
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3answers
1k 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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3answers
2k 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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3answers
2k 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 ...
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1answer
5k 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 ...
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5answers
29k 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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1answer
117 views

Large amount of traffic incoming. Preparation tips

Looking for any tips on improving performance on the server level as my client will be getting some heavy traffic in the next few days. Using a 1and1 cloud vps and increased the memory pretty high on ...
4
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1answer
229 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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1answer
599 views

How to Benchmark an x86 Router?

How would one go about objectively benchmarking different x86 server for their potential as x86 routers? One idea I had is to setup two subnets, 10.0.0.0/24 and 10.0.1.0/24, on opposite sides of a ...
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3answers
929 views

Simulate 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 can simulate high traffic using the ...
0
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1answer
178 views

how to simulate load on multiple app servers when nginx balances load according to IP

I use httperf from external server to stress test my app (on scalr/EC2). However nginx is configured to distribute load according to IP address of the source (so each app server will receive all the ...
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2answers
123 views

load testing based on access log recording [duplicate]

Possible Duplicate: Tools for load-testing HTTP servers? I need to load test a saas system to find capacity+bottlenecks. My preferred method is to record a few 100,000s or millions of real ...
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2answers
2k views

Stress Testing / Load Testing Proxy services / web servers

What are the best load testing tools for stress testing web servers and proxy services such as NAT. Some metrics to consider include throughput. hits per second. machine load.
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1answer
2k 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 ...
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1answer
213 views

Test PHP script load on Debian server

Anyone maybe know is there Linux (debian) tool for testing PHP application performance? I want to check in witch places my PHP/MySQL script need optimization.
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3answers
981 views

Apache/Tomcat Parameters

I have a Medium server on EC2. I don't know that much about Apache or Tomcat - they are up and running, but other than that I don't have advanced knowledge of how to tinker. I know that I can set the ...
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1answer
305 views

Tool to replay access.log files with cookies?

Is there any tool that will replay combined access.log-style (or any other format) files back and preserve the cookies? We need to load test our application with real user accesses but we really need ...
0
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1answer
277 views

How to replay access logs in the presence of timing problem?

I'd like to replay the IIS or Tomcat access logs to do load testing. The access logs contain only Get request, so the session data/post data is not a problem here. However two timing problem is ...
0
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3answers
1k views

How do I check how many users can a server handle before going online? [duplicate]

Possible Duplicate: How do you do Load Testing and Capacity Planning for Web Sites I'm moving a site from shared hosting to a VPS, which I have set up. I've made a change to my hosts file ...
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4answers
844 views

Stress test a server for simultaneous connection

I am trying to figure out a practical way to stress test a server for 300 to 600 simultaneous connections. Any advice? Thank you everyone for the help. To be more specific (sorry I wasn't before) ...
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4answers
143 views

Network testing: looking for any test daemon and client combination to measure firewall load with 500..2000 incoming connections

I need to measure IPTables/inline Snort impact on performance, so need to put my test server under a good load. Unfortunately, no hardware traffic generator is available, thus connections must be ...
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3answers
1k 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
690 views

Are there any tools for load / stress testing that can simulate image, video and audio uploads to Amazon EC2?

As part of my web application users can upload photos, audio and video files from a Flash SWF to my EC2 based upload server. I want to find a tool that I can use to stress test the EC2 instance (which ...
0
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1answer
119 views

Firewall perfomance test

What tools you can recomend for firewall and/or VPN perfomance testing (TCP & UDP traffic) ? iperf?
2
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2answers
1k views

Coldfusion 8 Application Crashes Under Heavy Load

We have a CF8 app that runs for 20-25 minutes before crashing under heavy load ~ 1200 users. This load is generated by our load testing tool: 1200 users ramped up in 5 mins (approx behavior of our ...
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2answers
1k views

Nginx / uWsgi / Django site can handle more traffic with rewrite URL

I'm running a Django app, using uWsgi behind Nginx. I've been doing some performance tuning and load testing using ApacheBench and have discovered something unexpected which I wonder if someone could ...
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6answers
23k 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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3answers
1k views

How do you know what number of page views per second is an acceptable amount for your server?

Apache's AB tool allows us to test our server to see how many pages per second a server can handle. The results are obviously is going to vary based on the specs of the server hardware and software ...
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2answers
698 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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2answers
2k views

How to determine approximate maximum number of requests? [duplicate]

I'm building a quite simple web application, and need to get some rough understanding of how much load my server can take. Of course, this depends on a whole lot of factors, but I just need a rough ...
2
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2answers
338 views

Globally-distributed load testing service providers

We are looking for a third-party service providers to load-test our website infrastructure, preferably across multiple geos. Any recommendations? We have done internal load testing with Load Runner ...
0
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1answer
434 views

httperf repeat wsesslog

For httperf with a wsesslog is there a way to repeat the activity in the script without wrapping it in a shell loop? If I do httperf --server=test.foo.com --wsesslog=20,0,foo.wsesslog I get 20 ...
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7answers
599 views

Can anyone please recommend any good Load Testing software? [closed]

Can anyone please recommend any good Load Testing software? I have a website which updates scores every minute via ajax calls and need a load testing software which supports ajax calls (javascript) ...
3
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1answer
2k views

Tips for benchmarking and load testing web server?

I'm trying to benchmark and load test various web server setups (mod_php vs php as fastcgi, max/min worker/thread configuration, and so on). I'm starting with ab, but would be interested in other ...
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2answers
2k views

How to calculate server bandwidth / load estimates?

What's either a good rule of thumb or a method to estimate load on a Windows server for a php application? How do I estimate bandwidth required for 1000 users on the site, or 10,000?
2
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1answer
494 views

How to interpret ab result?

I am using ab to load test my server. As I increase the concurrency number from 1, the requests per sec. goes up. I also see time per request (mean) goes up, while time per request (mean across all ...
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2answers
176 views

Load and performance testing for webapps with JavaScript support

Years ago I used OpenSTA to perform load and performance tests for web applications. I remember that it offered great recording possibilities which enabled us to quickly create new test scripts. ...
2
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4answers
1k views

Linux testing - CPU & disk

I am a bit rusty lately. What is the standard way to test CPU and disk I/O these days?
0
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1answer
215 views

Request bursting from web application Load Tests

I'm migrating our web and database hosting to a new environment on all new machines. I've recently performed a Load Test using WAPT to generate load from multiple distributed clients. The server has ...
1
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1answer
3k views

ApacheBench result to a file

I would like to save ApacheBench (ab) tool on linux to a file. When I run it with -v 2 it displays some results in my ssh window. How to move these data into a file and make sure that it will not ...
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0answers
88 views

Is there anyway way to speed up Exchange 2007's Load Generator tool?

I'm running Load Generator to test our new deployment before going live and the initialization process has been running for two days and is only at 25% for ~58000 user test. Does anyone know of a way ...
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5answers
8k 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 ...
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1answer
329 views

Recommendations for Java Web Server [closed]

I am currently using DBCP for connection pooling since it is more or less provided with tomcat and easy to setup. I am thinking about migrating to Glassfish or Jetty and haven't yet determined which ...