<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On Apr 3, 2010, at 2:39 AM, tim vets wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">Hi all,<div>I have a rather heavy patch which causes DIO errors when I switch~ on several subpatches.</div><div>I'm running pd + Jack on a rt kernel (ubuntu-studio Hardy),... Jack shows little or no Xruns.</div><div>Now I wanted to try and optimize the patch by using [pd~].</div>
<div>The way I understood it is that [pd~] will start a subprocess and it will (automatically ?) divide the audio computation load over multiple processors.</div><div>However, I get the impression that by using [pd~] I get the same (or even worse) results as with my regular "abstraction / [switch~]" approach; DIO error crackles.</div>
<div>Any advice very welcome!</div>
</blockquote><br></div><div>Have you had clicks before? In my experience running Linux, I have had much fewer dio errors (basically none) running pd -rt on a *non* realtime kernel. I use the basic Ubuntu kernel with realtime privileges enabled, no running pd as root. I also do not use jack but alsa directly, which seems more stable.</div><br><div>
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>--------</div><div>Dan Wilcox</div><div><a href="http://danomatika.com">danomatika.com</a></div><div><a href="http://robotcowboy.com">robotcowboy.com</a></div><div><br></div></div></span><br class="Apple-interchange-newline"></span><br class="Apple-interchange-newline">
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