Load testing is end-to-end performance testing under anticipated production load, which determine response times for various time critical transactions and business processes. As per wikipedia: Load testing is the process of putting demand on a system or device and measuring its response. ...
-1
votes
1answer
53 views
Estimating Concurrent Users for Web Applications - the 10%/10% rule of thumb [closed]
I know that there is no substitute for knowing your application intimately and testing but I've always used the "10% rule" as a rule of thumb when it comes to estimating concurrent users.
e.g.
Of ...
scalability
0
votes
0answers
5 views
Permission denied running WCAT remotely on EC2
I've been trying to configure a WCAT controller and several WCAT clients in EC2 for load testing a web application.
I have wcat successfully running from localhost and executing a scenario without ...
1
vote
1answer
47 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 ...
0
votes
0answers
37 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 ...
-6
votes
0answers
30 views
Does this dedicated server enough for my website ? Social Networking [closed]
I developed this social networking project, I want to test it for our college. We have 5000 students in our newsletter that will join the site in the first 6 months of launching it. It doesn't offer ...
-4
votes
1answer
50 views
What hardware factors may be considered bottlenecks on a Hyper-V virtual server during load testing?
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 ...
5
votes
1answer
211 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. ...
0
votes
0answers
44 views
Linux Server Load [closed]
Possible Duplicate:
How do you do Load Testing and Capacity Planning for Web Sites
I'm wondering what I can do to figure out how much traffic my server can handle at once? What is ...
2
votes
3answers
370 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 ...
0
votes
3answers
198 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 ...
4
votes
1answer
128 views
How do you do Load Testing and Capacity Planning for Databases
To go along with "How do you do Load Testing and Capacity Planning for Web Sites"
I'm looking to create a canonical question of tools and methods of capacity planning for Databases. This is intended ...
12
votes
1answer
371 views
How do you do Load Testing and Capacity Planning for Web Sites
I'm looking to create a canonical question of tools and methods of capacity planning for web sites and web-applications.
This is intended to be a canonical question so that we don't have to have ...
0
votes
1answer
58 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
votes
1answer
77 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 ...
1
vote
1answer
191 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 ...
0
votes
2answers
98 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
votes
1answer
76 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 ...
0
votes
2answers
47 views
load testing based on access log recording [closed]
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 ...
1
vote
2answers
160 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.
2
votes
1answer
316 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 ...
1
vote
0answers
102 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 ...
1
vote
1answer
86 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.
-1
votes
1answer
99 views
My new site (just launched) is under very heavy traffic / load at the moment. What can I do? [closed]
I'm panicking! :)
I'm hosted on GoDaddy (I know, I know...), economy web hosting. Any help would be wonderful. The site is pretty slow at the moment (an image rating site).
EDIT: My images are being ...
3
votes
3answers
165 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 ...
1
vote
1answer
114 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
votes
1answer
132 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
votes
3answers
260 views
How do I check how many users can a server handle before going online?
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 so that I see the site on the new server - it works ok as long as I'm the only user. But I want ...
1
vote
4answers
185 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) ...
0
votes
4answers
66 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 ...
3
votes
2answers
246 views
stress test video streaming
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.
1
vote
2answers
144 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
votes
1answer
93 views
Firewall perfomance test
What tools you can recomend for firewall and/or VPN perfomance testing (TCP & UDP traffic) ?
iperf?
2
votes
2answers
562 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 ...
3
votes
3answers
762 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 ...
4
votes
4answers
2k 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 ...
2
votes
3answers
347 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 ...
0
votes
2answers
280 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 ...
1
vote
2answers
588 views
How to determine approximate maximum number of requests?
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
votes
2answers
130 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
votes
1answer
220 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 ...
1
vote
8answers
296 views
Can anyone please recommend any good Load Testing software?
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
votes
1answer
522 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 ...
1
vote
2answers
594 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
votes
1answer
230 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 ...
1
vote
2answers
130 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
votes
4answers
605 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?
3
votes
1answer
105 views
Is there a network “tee”-alike with one leg returning to /dev/null?
I've just built a new PostgreSQL server for my employers, which is happily replicating using WALs. I'm now left with the problem of verifying its performance. One nice way which came up in ...
0
votes
1answer
133 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 ...
0
votes
1answer
494 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 ...
1
vote
0answers
49 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 ...
