Messages in this thread | ![/](/images/icornerl.gif) | | Date | Wed, 30 Jul 2003 19:44:57 +0200 | From | Pavel Machek <> | Subject | Re: PATCH : LEDs - possibly the most pointless kernel subsystem ever |
| |
Hi!
> > But this kind of blinkenlights needed pretty fast LEDs. (At 486 time > > I decided that parport on ISA is fast enough..) > > I'll buy some LEDs and build a parallel port connected LED panel > tomorrow... Do you think the overhead of driving the LEDs would have > too much of a negative effect on system performance? If so, or if > we
I'm not sure. At 486 days I was pretty sure it did not matter. These days you might get 10% slowdown on some microbenchmark, or something like that. I do not think it can slow down common tasks.
My construction of LED lights is extremely flaky, and I'm afraid of burning printer port. At 486 days ports were expected to survive such abuse. Not sure if todays EPP/wtf ports can handle that. Pavel
-- Horseback riding is like software... ...vgf orggre jura vgf serr. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| ![\](/images/icornerr.gif) |