spike testing in jmeter
<p>I'm new to jmeter, and I'm currently performing soak test using jp@gc ultimate thread group.The scenario is I want to perform the spike test within this soak test.So how can I perform it?</p>

<p><a href="http://i.stack.imgur.com/pcg6C.png" rel="nofollow">The img shows the scenario in jmeter</a></p>

<p>The above image shows the scenario. I want to perform spike test only in the jp@gc ultimate thread group.</p>

<p>Thanks in advance.</p>