[Rxtx] Latency Woes
hakcenter at gmail.com
Tue Mar 8 16:26:15 MST 2011
So if I could get the baud up
15625, theoretical maximum latency is 1.92ms ? Basically 500 samples/sec ?
125000, theoretical maximum latency is 0.24ms ? Basically 4167 samples/sec ?
Keeping the protocol the same.
On 03/08/11 15:05, jfh at greenhousepc.com wrote:
> It's nowhere near that bad. I'd measured it once before, and I
> believe it's sub-millisecond.
> Julie Haugh
> Senior Design Engineer
> greenHouse Computers, LLC // jfh at greenhousepc.com
> <http://greenhousepc.com> // greenHousePC on Skype
> -------- Original Message --------
> Subject: Re: [Rxtx] Latency Woes
> From: Curtis Hacker <hakcenter at gmail.com <mailto:hakcenter at gmail.com>>
> Date: Tue, March 08, 2011 3:27 pm
> To: rxtx at qbang.org <mailto:rxtx at qbang.org>
> Thank you guys, cause I was really worried there. I guess another win
> for math today hahaha. So what is the imposed latency that rxtx has ?
> maybe 5-10ms ?
> On 03/08/11 13:14, Bob Jacobsen wrote:
> > On Mar 8, 2011, at 12:33 PM, Curtis Hacker wrote:
> >> Tunerpro log : http://www.ds-map.net/tunerpro_log.csv
> > It's only reading one sensor per line.
> > Note that e.g. Boost PSI changed in lines 6, 30 and 54; every 24
> lines. IAT changed in lines 16 and 40; every 24 lines but at a
> different phase. GramsRev in lines 23 and 47; every 24 lines, at
> yet another phase.
> > Looks like (69-1) readings in 1.30 seconds = 19msec per reading.
> Arithmetic still works!
> > Bob
> > --
> > Bob Jacobsen, LBNL
> > Bob_Jacobsen at lbl.gov <mailto:Bob_Jacobsen at lbl.gov>
> +1-510-486-7355 fax +1-510-643-8497 AIM, Skype JacobsenRG
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