<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On 3 Jan 2013, at 18:20, Gene Heskett wrote:</div><blockquote type="cite"><div><font class="Apple-style-span" color="#000000"><br></font>I guess what I wanted to say was that for some uses, the latest and <br>greatest, because its real world performance sucks dead toads thru soda <br>straws, is a disaster. </div></blockquote><div><br></div><div>Couldn't agree more Gene :) I use Linux for music production (occasionally) and need hard real-time performance. Things have been getting steadily worse since 10.10 and the latest release is completely useless to me. (Audio latency minimum I can get is 200ms, as opposed to 5ms with 10.10).</div><div><br></div><div>However I don't think (K)Ubuntu are to blame for this, it's entirely in the hands of the kernel developers and Linus himself has no interest in realtime.</div><div><br></div><div>Mark</div><div><br></div><div><br></div><br><blockquote type="cite"><div>You simply cannot move a machine capable of moving <br>a flood cooled cutting tool spinning 20k rpms through alu or steel in terms <br>of meters per minute, without being able to sample its position, do the <br>math and issue corrective orders at millisecond or faster rates for servo <br>controls, or to stepper motors at a minimum of 40,000/sec with software <br>step generation. External stepper generators can take that maximum rate to <br>over a megacycle, but then of coarse its no longer a 100% LinuxCNC <br>solution, needing additional hardware that can run $1000/axis controlled.<br><br>Cheers, Gene<br>-- <br>"There are four boxes to be used in defense of liberty:<br> soap, ballot, jury, and ammo. Please use in that order."<br>-Ed Howdershelt (Author)<br>My web page: <<a href="http://coyoteden.dyndns-free.com:85/gene">http://coyoteden.dyndns-free.com:85/gene</a>> is up!<br>My views <br><<a href="http://www.armchairpatriot.com/What%20Has%20America%20Become.shtml">http://www.armchairpatriot.com/What%20Has%20America%20Become.shtml</a>><br>This is National Non-Dairy Creamer Week.<br>I was taught to respect my elders, but its getting <br>harder and harder to find any...<br><br>-- <br>kubuntu-users mailing list<br><a href="mailto:kubuntu-users@lists.ubuntu.com">kubuntu-users@lists.ubuntu.com</a><br>Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/kubuntu-users<br></div></blockquote></div><br></body></html>