How to quickly stress test a web server Rumi, November 13, 2017 The Curl syntax allows you to specify sequences and sets of URL’s. Say for example we’re going to run a load stress test against Google we can run… curl -s "http://google.com?[1-1000]" This will make 1000 calls to google i.e. http://google.com?1 http://google.com?2 http://google.com?3 \... http://google.com?1000 So say you want to stress test your web application and it won’t complain if it’s fed an extra parameter, 10,000 calls could be done something like. curl -s "http://yourappp.com/your_page_to_test.php?[1-10000]" Multiple Pages, easy just add each page to the command line. curl -s "http://yourapp.com/page1.php?[1-1000]" "http://yourappp.com/page2.php?[1-1000]" Or even… curl -s "http://yourapp.com/page{1, 2}.php?[1-1000]" Timing Using the time command we can get a view on our performance time curl -s "http://yourapp.com/page{1, 2}.php?[1-1000]" real 0m0.606s user 0m0.009s sys 0m0.008s Simulating consecutive users OK, this is great for sending a whole bunch of calls one after the other but what about simultaneous calls. For this we can place the Curl calls in a script and set them running in the background. i.e. my_stress_test.sh curl -s "http://yourapp.com/page{1, 2}.php?[1-1000]" & pidlist="$pidlist $!" curl -s "http://yourapp.com/page{1, 2}.php?[1-1000]" & pidlist="$pidlist $!" curl -s "http://yourapp.com/page{1, 2}.php?[1-1000]" & pidlist="$pidlist $!" curl -s "http://yourapp.com/page{1, 2}.php?[1-1000]" & pidlist="$pidlist $!" curl -s "http://yourapp.com/page{1, 2}.php?[1-1000]" & pidlist="$pidlist $!" curl -s "http://yourapp.com/page{1, 2}.php?[1-1000]" & pidlist="$pidlist $!" curl -s "http://yourapp.com/page{1, 2}.php?[1-1000]" & pidlist="$pidlist $!" for job in $pidlist do echo $job wait $job || let "FAIL+=1" done if [ "$FAIL" == "0" ]; then echo "YAY!" else echo "FAIL! ($FAIL)" fi Then run time my_stress_test.sh Caveats This does not simulate user behaviour exactly as the browser is not only downloading the page but all attached images, javascripts, stylesheet etc. You could simulate this too by adding the URL’s to the url command. Src: http://servermonitoringhq.com/blog/how_to_quickly_stress_test_a_web_server Related Scripts Load TestStress Test
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