Swap to SD cards: performance and burnout test
epastorino at plan.ceibal.edu.uy
Fri Dec 11 08:21:16 EST 2009
Haven't heard of it....
I'm going to check it out for sure!
Thanks for the tip, Tomeu!
On Fri, Dec 11, 2009 at 11:15 AM, Tomeu Vizoso <tomeu at sugarlabs.org> wrote:
> On Tue, Dec 8, 2009 at 15:05, Emiliano Pastorino
> <epastorino at plan.ceibal.edu.uy> wrote:
> > Thanks for all your replies.
> > I'll show you the results when we're done.
> >> What's most important to the user is probably going to be the latency
> >> (pointer "sluggishness", UI reaction time), though, and I don't have an
> >> idea how to test that (still keeping in mind that it needs to be
> >> comparable and repeatable).
> > Agree.
> > So long, we've seen that you can be running 15 activities (and more, but
> > that won't make much sense) simultaneously and UI reaction time "seems"
> > be the same, while an XO with no swapping always crashes with 4 or 5
> > activities running at the same time.
> Btw, have you considered using compcache? It may have tradeoffs
> interesting to you. Martin Dengler (added to CC) has run it quite
> intensively on the XO.
> > I'll speak to my boss and see if these subjective results are
> > btw, right now I'm using a Verbatim SDHC 4GB C6 card, but I'll be trying
> > more flavours
> > On Tue, Dec 8, 2009 at 9:10 AM, Neil Graham <Lerc at screamingduck.com>
> >> On Tue, 2009-12-08 at 10:18 +0100, Sascha Silbe wrote:
> >> > > I don't think it's terribly useful to test memory consuming
> >> > > non-interactive tasks.
> >> > The problem is that the only way to get _comparable_, _repeatable_
> >> > numbers is to make the test non-interactive.
> >> Yup, but that's looking where you didn't drop your contact lens because
> >> the light is better over here.
> >> > What's most important to the user is probably going to be the latency
> >> > (pointer "sluggishness", UI reaction time), though, and I don't have
> >> > idea how to test that (still keeping in mind that it needs to be
> >> > comparable and repeatable).
> >> Simply cannot be done, User interfaces are inherently based around,
> >> well, interfacing with the user. The user is a component of the system.
> >> You could have a bot that does some automated clicking but you run the
> >> risk of ignoring exactly the data that would be relevant.
> >> The behaviour of the user will change with he speed of the system,
> >> sometimes that change will significantly change the speed of the system.
> >> An example is the user triggering an operation twice because the system
> >> took too long to demonstrate it was responding to the first one. Even
> >> if the double action is handled gracefully, it makes extra work to
> >> figure out what to do.
> >> When my daughter was younger she would just keep on clicking on supertux
> >> until it appeared, bringing the system to a standstill while it launched
> >> 20 copies.
> >> _______________________________________________
> >> Devel mailing list
> >> Devel at lists.laptop.org
> >> http://lists.laptop.org/listinfo/devel
> > --
> > Ing. Emiliano Pastorino
> > LATU - Plan Ceibal
> > Av. Italia 6201 CP: 11500, Montevideo, Uruguay
> > Tel: (598 2) 601 5773 int.: 213
> > _______________________________________________
> > Devel mailing list
> > Devel at lists.laptop.org
> > http://lists.laptop.org/listinfo/devel
> «Sugar Labs is anyone who participates in improving and using Sugar.
> What Sugar Labs does is determined by the participants.» - David
Ing. Emiliano Pastorino
LATU - Plan Ceibal
Av. Italia 6201 CP: 11500, Montevideo, Uruguay
Tel: (598 2) 601 5773 int.: 213
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Devel