Ok. Better late than never.<div>Attached here are the logs from the XO batteries.</div><div><br></div><div>Each file has one .csv log with the battery serial at the end of the file name given by the olpc-pwr-log.</div><div>
The tests were all run simultaneously even though some timestamps are off.</div><div><br></div><div>There are two logs for each battery. The first one chronologically is the one corresponding to the battery discharging and the second one is for the charging process.</div>
<div><br></div><div>There were two XO with a brand NEW battery, with a label NEW at the end of the file names and two tests run with really OLD and badly shaped batteries, labeled OLD. The rest are from old but "good enough" batteries.</div>
<div><br></div><div>Caveat: the charging tests were done with the xset -dpms not set due to some miscalculation, so the screen went off some times. Sorry about that. The discharging process went as planned.</div><div><br>
</div><div>I haven't had time yet to analyze the logs, so I don't have comments regarding the results.</div><div><br></div><div>Cheers!</div><div><br><div class="gmail_quote">2011/3/24 Paul Fox <span dir="ltr"><<a href="mailto:pgf@laptop.org">pgf@laptop.org</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div class="im">ismael wrote:<br>
> OK. Great. Is the attached version newer than the one in Sugar 0.88??<br>
<br>
</div>almost certainly.<br>
<font color="#888888"><br>
paul<br>
</font><div><div></div><div class="h5"><br>
<br>
> Because the latest dextrose image is mainly based on Sugar 0.88<br>
><br>
> 2011/3/24 Richard A. Smith <<a href="mailto:richard@laptop.org">richard@laptop.org</a>><br>
><br>
> > On 03/24/2011 10:41 AM, Ismael Schinca wrote:<br>
> ><br>
> > I'm planning to use different XO's, all of them 1.0 hardware. I<br>
> >> definately won't be able to finish today because they all have different<br>
> >> OS images and I think it would be best if I update them all (even for<br>
> >> future tests). Maybe tomorrow, maybe monday.<br>
> >><br>
> ><br>
> > Yes certainly please use the same image on all of them. If you have to<br>
> > install software then please use the latest version of olpc-pwr-log. I have<br>
> > it attached to this mail.<br>
> ><br>
> ><br>
> > I think it will be very hard to perform the same test under the same<br>
> >> conditions as you suggest because:<br>
> >> - It will be very time consuming (though it doesn't need a lot of<br>
> >> attention during the test)<br>
> >><br>
> ><br>
> > My goal is to automate the test and use a very short test window. ie 20<br>
> > minutes or so.<br>
> ><br>
> ><br>
> > - The air conditioning in our building is quite frankly chaotic so<br>
> >> temperature is really variable (which is actually a lot worse for us<br>
> >> humans than batteries ;) )<br>
> >><br>
> ><br>
> > Yes. Sorry my use of the word exactly was probably too strong. I don't<br>
> > mean that it has to be 25 degC ambient and only that temperature. The temp<br>
> > fluctuations in a air conditioned office should be within reason. I just<br>
> > don't want the profiles generated in an office and then the test run in a<br>
> > outside warehouse at 33C. Or the curves generated on a XO-1 with build 8.2<br>
> > but the test run on a 1.5 with build 10.1.3. That sort of thing.<br>
> ><br>
> > The closer I might get, which I think could be pretty close is:<br>
> >> - Install the SAME fresh OS image and firmware version on all the test XOs<br>
> >> - Disable power management in every XO.<br>
> >><br>
> ><br>
> > and dpms. xset -dpms from the sugar terminal other wise the screen will<br>
> > turn off in 20 minutes and change the power draw.<br>
> ><br>
> ><br>
> > - The laptops batteries are mostly charged, so it will be a charge after<br>
> >> discharge, so I think temperature there is less of a concern<br>
> >> - Run the tests at the same time in every XO<br>
> >><br>
> ><br>
> > Yes. I believe that will work fine.<br>
> ><br>
> > Note: I'm getting on a plane in a few minutes so this will be my last<br>
> > e-mail until much later on today. Possible tonight or tomorrow.<br>
> ><br>
> ><br>
> > --<br>
> > Richard A. Smith <<a href="mailto:richard@laptop.org">richard@laptop.org</a>><br>
> > One Laptop per Child<br>
> ><br>
><br>
><br>
><br>
> --<br>
> Ismael Schinca<br>
> Centro Ceibal - Depto. Técnico - I+D<br>
> Avda. Italia 6201 - Edificio Los Ceibos<br>
> Montevideo - Uruguay.<br>
> Tel.: 2601 57 73 Int. 2232<br>
</div></div><div class="im"> > part 2 text/plain 129<br>
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<br>
</div><div><div></div><div class="h5">=---------------------<br>
paul fox, <a href="mailto:pgf@laptop.org">pgf@laptop.org</a><br>
</div></div></blockquote></div><br><br clear="all"><br>-- <br>Ismael Schinca<br>Centro Ceibal - Depto. Técnico - I+D<br>Avda. Italia 6201 - Edificio Los Ceibos<br>Montevideo - Uruguay.<br>Tel.: 2601 57 73 Int. 2232<br><br>
</div>