What are the units of the values returned from sp_whoisactive
<p>I am using the nice <a href="http://whoisactive.com" rel="nofollow noreferrer">sp_whoisactive</a> made by Adam Machanic.</p>

<p>The documentation is however a little sparse. Specifically the meaning and units of the columns provided is unclear to me.</p>

<p>How should I understand "number of physical reads"? Can I convert this to e.g. MB or is it not a 1to1 conversion? Are tempdb_allocations and reads given in those same units?</p>

<p>For CPU: "For an active request, total CPU time consumed by the current query"</p>

<p>Does this mean cpu time in seconds, milliseconds? Does it count double when parallelized?</p>

<p>I am running this command:</p>

<pre><code>sp_whoisactive @filter_type='login', @filter='myusername', @get_plans=1
</code></pre>

<p>and this one for the help text:</p>

<pre><code>sp_whoisactive  @help=1
</code></pre>