Re: [Emc-users] Difficulty defining jitter, was Re: May be of Interest

2012-04-01 Thread Jack Coats
On Sun, Apr 1, 2012 at 6:15 PM, Jon Elson wrote: > Kent A. Reed wrote: >> >> As an aside, it was interesting to me that while the author of the >> bitmuster article made note of the fact that different tools reported >> different numbers, he/she seemed indifferent to the actual numbers reported. >

Re: [Emc-users] Difficulty defining jitter, was Re: May be of Interest

2012-04-01 Thread Jon Elson
Kent A. Reed wrote: > > As an aside, it was interesting to me that while the author of the > bitmuster article made note of the fact that different tools reported > different numbers, he/she seemed indifferent to the actual numbers reported. > > Uhhh, why bother making a measurement if you hav

Re: [Emc-users] Difficulty defining jitter, was Re: May be of Interest

2012-04-01 Thread Kent A. Reed
On 4/1/2012 2:03 PM, Jon Elson wrote: > Kent A. Reed wrote: >> With a preempt_RT enabled kernel 2.6.33.7.2-rt30 and an appropriately >> modified EMC2.4.4 [patches from Michael Büsch and Jeff Eppler] running >> on an IBM Thinkpad T40 with a 1500MHz PentiumM cpu, the author measured >> the following:

Re: [Emc-users] Difficulty defining jitter, was Re: May be of Interest

2012-04-01 Thread Jon Elson
Kent A. Reed wrote: > > With a preempt_RT enabled kernel 2.6.33.7.2-rt30 and an appropriately > modified EMC2.4.4 [patches from Michael Büsch and Jeff Eppler] running > on an IBM Thinkpad T40 with a 1500MHz PentiumM cpu, the author measured > the following: > - > 1) the EMC2 latency-test > >

[Emc-users] Difficulty defining jitter, was Re: May be of Interest

2012-04-01 Thread Kent A. Reed
On 3/31/2012 4:45 PM, Kirk Wallace wrote: > I found this: > http://www.bitmuster.org/projects/emc.html > > the thing that comes to mind, considering the rev date, how it seems > fairly significant, and recent questions on the list, it's a little > surprising that this hasn't hit the wiki or been on