|
Rockbox mail archiveSubject: Re: Testers wanted: up to 50% greater battery lifeRe: Testers wanted: up to 50% greater battery life
From: Michael O'Quinn <michael_at_oquinn.info>
Date: Tue, 29 Jul 2003 09:49:27 -0700 (PDT) On Tue, 29 Jul 2003, John Stevenson wrote: > > 4) Your testing would not be 'real life' based, > people do not use their player in that way. Might be > best to time over normal usage - more people could > take part then. The normal stuff such as switching > on, off, (which uses more battery power) creating > queues and just playing with it, that way you will get > a more realistic set of metrics. That is not true. The purpose of his test is to compare battery usage under a controlled set of conditions, and playing the way he described it works. He will not be comparing this usage pattern against a more "normal" usage pattern. He will be comparing it against other runs of the same type, to determine which software has the longest run time compared to the other versions USING THE EXACT SAME CONDITIONS FOR EACH TEST. Doing it your way would be much more complicated to accomplish. THe problem is that you would need to duplicate the exact same keypresses at the exact same time to really get an accurate comparison. Tom: You ARE planing to distribute all three versions to each tester, right? I mean, given differences in battery life among seemingly identical batteries (You use a 1 hour charger, I use an overnight charger, so my batteries probably have a different run time from yours, that sort of thing) you have to compare different runs on the exact same JB and battery set to really get valid data. To get decently accurate results, you should instruct the testers to run one test first to fully discharge the batts, then fully charge them, THEN run the first valid test to actually collect data. I don't REALLY think this needs to be a blind test. It might not hurt to have the user run the first test over when the other ones are done, just to make sure the batteries are still behaving the same. This IS a different than normal usage pattern, and the battery characteristics may change over the life of the test. That would be five runs minimum: One dummy to prep the batteries, three actual tests, and one final test (re-run of the first actual test) to confirm the batts haven't changed radically. Could you make a counter that logs each time a song is played? This would make collecting the data a lot easier, and should suffice for your purposes. I don't look forward to sitting there with a stop watch. If this really works, and doesn't break things, it'll be a very welcome enhancement! Michael Received on 2003-07-29 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |