brian m. carlson schrieb: > On Sun, Dec 16, 2007 at 09:38:48PM +0100, Sjoerd Simons wrote: >> strace -tt would be more usefull as that outputs timing information. The >> open,ioctl,close triple will cause various wakeups every two seconds.. >> But only >> in a short time, so that shouldn't have a big impact on the time your >> processor >> can actually spent in a lower power state. > > I'll get that to you as soon as I log out and log in again. > hal-disable-polling --enable-polling is broken (see the bug report I > just filed). > > I'm not exceptionally pleased by the fact that HAL is polling at all; > polling is a fundamentally broken way to do things, and despite the fact > that the hardware is broken (by not supporting the MMC commands), it > still rubs me the wrong way. Whatever it's doing, it should not be > waking up the processor on average 20 times a second.
Only never SATA drives support hardware notifications (via libata). For others, the only options is to poll, unfortunately. Why polling every 2 secs causes 20 wakeups per seconds is unclear to me. Maybe a driver issue, maybe not. Michael -- Why is it that all of the instruments seeking intelligent life in the universe are pointed away from Earth?
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