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

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0answers
11 views

Load testing for HTTPS [on hold]

We want to switch our web servers to use HTTPS as their primary protocol. Since ages I use the simple tool siege. However, with HTTPS I do not get any meaningful results any more since siege does a ...
2
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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 ...
3
votes
3answers
794 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 ...
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0answers
10 views

SIPp configuration (SIP/RTP packet replay)

Just today found sipp and would like to use it to replay a packet capture of a video SIP call, made with Wireshark. If it works, next, I will try to replay captures in-parallel, with some delay, for ...
0
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1answer
87 views

haproxy-varnish can't reach 6k requests

Issue I can't reach 6k requests/seconds. I get a lot of timeouts. My response time goes as high as 26 seconds. Intro I am setting up a server that will host a 100MB static-website. The thing is ...
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0answers
11 views

NGNIX limit_per_ip best for 100-200 users from same IP

so i am setting up a web server running ngnix and have it all nice and running, however after some load testing i have noticed a lot of requests are getting 503 errors due to the limits set by ngnix ...
5
votes
1answer
139 views

Odd performance fluctation with php-fpm and nginx

I'm running a load test against a web service. It's a php application running on php-fpm and nginx, with fastcgi. There is a MySQL backend being used for small reads only. Invariably, I'm seeing a ...
66
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4answers
18k 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 ...
2
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0answers
120 views

nginx - connect() failed upstream under load testing

I've been doing some load testing with wrk of my nginx reverse proxy -> my web app setup and I noticed that when I get to 1000+ concurrent connections, nginx starts returning 502s and the following ...
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0answers
24 views

appropriate traffic to load test couchdb horizontal scaling

I'm designing the CouchDB backend to my web application, and I want to estimate how many GETs and PUTs per second I can achieve with a given number of instances. (Arguably I should be testing view ...
0
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0answers
32 views

How does tsung counts users?

Totally based on max-users setting on ? In my situation there 2 sessions with total of 20 requests under . Each request within any sessions have a random 2 seconds think time. Max users are 5000, ...
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5answers
6k 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 ...
-3
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1answer
74 views

How to artificially open many tcp connection on a host (testing)? [closed]

I'm trying to build a test setup which test my server's performance under high load. In order to do that I want to open thousands of tcp connection. The problem is that I only have two hosts, one is ...
47
votes
8answers
64k 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
78 views

Http proxy server performance analyzing

I have implemented a http proxy client/server. Currently I intended to test performance of this proxy client/server. Can anybody tell me what kind of tests should I take to analyze it's performance? ...
0
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0answers
55 views

Bad ping results while testing 6000 TCP clients with 18 mbytes/s total traffic on Windows Web Server 2008

The clients are running on the machine #1. The server is installed on the machine #2. The machines have a gigabit connection through a switch on their private vlan. There are no errors in the switch ...
3
votes
1answer
44 views

Architecting for Load Testing

I'm trying to architect a set of web and database servers so that we can load test them. I'm running into some problems given the constraints I have to work with: We can't load test against ...
1
vote
2answers
3k 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... ...
0
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2answers
301 views

Tuning high-raffic nginx and wordpress server

I have been conducting load-tests (via blitz.io) as I attempt to tune server performance on a pool of servers running php 5.5, wordpress 3.9.1, and nginx 1.6.2. My confusion arises when I overload a ...
2
votes
3answers
2k views

Can I simulate concurrent wireless connections for load testing?

Our office internet typically has about 25-30 computers connected. For an upcoming event, we will have to support about 100 connections, mostly via wireless, for a few days. I'd really like to test ...
0
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2answers
149 views

Tools for replaying _all_ HTTP traffic [closed]

I intend to log all production HTTP requests to be able to do load testing and analysis on that data later on. The log replaying software I have seen so far only seem capable of replaying GETs. Are ...
0
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0answers
82 views

How to profile how much memory my tomcat server needs?

I'm running a tomcat server on my own for the first time and I was shocked by how much memory Java apps need compared to apps in other languages. Since I am paying a web host, I want to determine how ...
0
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1answer
111 views

How do I interpret this Load Test result?

We used BlazeMeter to evaluate our site's capability to handle load. I set up a simple script that logs in (using a special page which ensures each load test user has a different account), visits ...
0
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0answers
91 views

stress testing a QOS switch

I need to test a network Switch that has QOS capabilities. I need to simulate a large network (preferably up to or exceeding 100 devices), and I need to do it as a live test. My requirements are: • ...
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0answers
176 views

Improving siege results on nginx

My server has Nginx and I've been testing it with siege. top was showing the server wasn't even breaking a sweat with 150 connections from siege -c150 -d10 -t180S http://foo.com However, there were ...
0
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0answers
119 views

X520-DA2 10GbE PCIe NIC on Ubuntu 12.04 doesn't respond correct ARP information for a traffic tester

I'm trying to configure stand-alone test network to examine a server that has two 10GbE ports PCIe NIC. But I couldn't get any ARP responses of those 10GbE ports. To execute my test, it's necessary to ...
2
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1answer
378 views

High Mysql Connections

Having a challenge discovering why results are as they are. Perhaps missing something obvious. Sorry this isn't very specific. But if anyone has an pointers on areas to focus on that would be very ...
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0answers
413 views

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 ...
1
vote
1answer
115 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 ...
2
votes
1answer
615 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 ...
4
votes
1answer
2k 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 ...
1
vote
1answer
907 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 ...
0
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1answer
141 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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2answers
634 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
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0answers
60 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, ...
0
votes
2answers
145 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 ...
0
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1answer
202 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 ...
1
vote
2answers
57 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
votes
1answer
558 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
vote
1answer
432 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
votes
1answer
198 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 ...
7
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4answers
20k 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 ...
0
votes
1answer
130 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 ...
0
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5answers
5k 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 ...
20
votes
1answer
3k 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
votes
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.
2
votes
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 ...
2
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2answers
703 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
3k 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) ...
1
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0answers
100 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).