<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
However, I finally ditched it. I figured it will slow down boot of an<br>
aging system. Instead, I added bcache to my spinning rust plus an<br>
affordable SSD. This works very well and reduces boot times much better<br>
than readahead (by a factor of at least 5).</blockquote><div><br></div><div>Perhaps such a feature is more useful as a diagnostic tool for poorly-performing/broken systems.</div><div><br></div><div><br></div><div>-- grok.</div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div> </div></div></div></div>