On Fri, Dec 02, 2005 at 08:35:54PM +1030, Daniel O'Connor wrote: > On Fri, 2 Dec 2005 19:35, Marco Calviani wrote: > > > It's not present under powerd for the simple fact that to be efficient > > > in term of not being too intrusive (kernel to user data transfers, etc), > > > powerd can only provide a limited number of check per second (at this > > > time, 2 per second). But the current algorithm present in powerd is > > > not well suited in that case. You have to wait one demi-second > > > for the processor being put to full speed if the system was idle > > > before. > > > > Are there on the horizon any sort of plans to implement a newer and > > more efficient algorithm to increase the number of transition per > > second? Sorry but i've not understood why linux-cpufreqd is able to > > cope with those without being so intrusive..... > > I don't see why you can't run powerd more frequently, I do.. Unless your ACPI > has a problem that means the transition is slow.
I'm sure this could not be done under Linux without a lot of problems (it is required to use the /proc things and it's too slow in that case). > I can't imagine that doing 5 (or even 50) syscalls a second is a big CPU load > unless there is a specific problem with sysctls or the cpufreq > infrastructure. If that's possible being not so intrusive with, say 50 syscalls under FreeBSD, then all I said above is indeed stupid crap. > I run powerd like this -> > /usr/sbin/powerd -i 90 -r 30 -a adaptive -b adaptive -n adaptive -p 200 > -- Bruno Ducrot -- Which is worse: ignorance or apathy? -- Don't know. Don't care. _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"
