Commit Graph

38 Commits

Author SHA1 Message Date
joerg
ea8a7d9989 then -> than
MFC after:	1 day
2010-03-15 16:06:52 +00:00
imp
6db2453429 Since APM is a legacy technology, that won't be adapted to other
platforms, move the test for i386 from the Makefile to powerd.c.  The
powerpc specific checks are already done this way...
2010-02-04 07:26:26 +00:00
ed
073cafdd42 The last big commit: let usr.sbin/ use WARNS=6 by default. 2010-01-02 11:07:44 +00:00
ed
b9ca89bfc4 ANSIfy almost all applications that use WARNS=6.
I was considering committing all these patches one by one, but as
discussed with brooks@, there is no need to do this. If we ever
need/want to merge these changes back, it is still possible to do this
per application.
2009-12-29 22:53:27 +00:00
gavin
ff11c95c02 Grammar and minor tweaks to powerd(8) man page.
PR:		docs/133186
Approved by:	ed (mentor)
MFC after:	2 weeks
2009-12-21 22:56:06 +00:00
nwhitehorn
4feecabff8 Teach powerd how to query the PMU AC line state on PowerPC. 2009-05-31 10:27:24 +00:00
trhodes
bc9f9a22f1 Fix a typo higter->higher.
Spotted by:	ganbold
2008-12-24 09:17:30 +00:00
mav
bb609f07ed Restore original frequency on exit.
PR:		bin/113813
2008-11-18 15:48:23 +00:00
mav
faa047f97d Set of powerd enchancements:
1. Make it more SMP polite. Previous version uses average CPU load that
often leads to load underestimation. It make powerd with default
configuration unusable on systems with more then 2 CPUs. I propose to use
summary load instead of average one. IMO this is the best we can do without
specially tuned scheduler. Also as soon as measuring total load on SMP
systems is more useful then total idle, I have switched to it.

2. Make powerd's operation independent from number and size of frequency
levels. I have added internal frequency counter which translated into real
frequencies only on a last stage and only as good as gone. Some systems may
have only several power levels, while others - many of them, so adaptation
time with previous approach was completely different.

3. As part of previous I have changed adaptive mode to rise frequency on
demand up to 2 times and fall on 1/8 per time internal.

4. For desktop (AC-powered) systems I have added one more mode - "hiadaptive".
It rises frequency twice faster, drops it 4 times slower, prefers twice
lower CPU load and has additional delay before leaving the highest frequency
after the period of maximum load. This mode was specially made to improve
interactivity of the systems where operation capabilities are more
significant then power consumption, but keeping maximum frequency all the
time is not needed.

5. I have reduced default polling interval from 1/2 to 1/4 of second.
It is not so important for algorithm math now, but gives better system
interactivity.

Discussed on:	mobile@
2008-11-18 13:24:38 +00:00
obrien
d2b669d980 Add an abbreviation for adaptive mode, and document all the abreviations. 2008-06-22 17:52:57 +00:00
kevlo
c74ac9adc1 getopt(3) returns -1, not EOF. 2008-02-18 03:19:25 +00:00
marck
d5c48380b2 Failing to set new frequency should not lead to powerd exiting.
Change err(3) to warn(3) as three other cases.

Approved by:	njl, des
2007-06-13 19:05:11 +00:00
des
2c73974f3f Back out revs 1.18 and 1.19; they were based on incorrect assumptions.
Requested by:	nate
2006-02-19 00:40:28 +00:00
des
733ad39b75 Look for cpu/ichss instead of cpu/p4tcc, which is i386/amd64-only. 2006-02-18 16:01:07 +00:00
des
8fe6e13e40 Load cpufreq at startup if it isn't there already. 2006-02-18 11:35:12 +00:00
des
c5944732d8 Don't use threads when there's no real reason to.
MFC after:	2 weeks
2006-01-03 21:32:02 +00:00
joel
7eed0b9958 s/5.5/6.0/ in HISTORY section.
Discussed with:	ru
2005-11-24 09:25:10 +00:00
ru
8a2652d669 -mdoc sweep. 2005-11-18 10:56:28 +00:00
pjd
59d6dffbb0 Be more consistent with the rest of the manual page. 2005-11-06 20:01:47 +00:00
njl
427aeb138a Create the devd thread after we have called daemon(). Otherwise, it would
be killed when the parent exits.

Submitted by:	Rudolf Cejka <cejkar / fit.vutbr.cz>
2005-10-24 18:34:54 +00:00
njl
39560838ba Whitespace fix. 2005-10-23 00:55:56 +00:00
njl
cd579e831a Set the signal handlers before creating the thread. This is so it inherits
the parent's signal mask.  Once daemon() forked, signals would be ignored
in the child thread.  While I'm here, check the return value of daemon().
This fixes termination in the daemon case (bug introduced in last commit).

Noticed by:	Frederik Lindberg
2005-10-20 05:12:20 +00:00
njl
d5e033e83c Use a pipe for reading devd events as another method of getting the AC line
status.  Add a thread that waits for events on the named pipe instead of
polling the line status via apm or the ACPI sysctl.  Additionally, use
robust error handling in case devd goes away or we temporarily can't set
a frequency (i.e., passive cooling has preempted our setting).

Later, this should be improved so that if adaptive control is not being used,
we will block while waiting for AC line events, saving a little CPU.

Submitted by:	Frederik Lindberg <fli+freebsd-current/shapeshifter.se>
2005-10-19 04:48:44 +00:00
des
953bbe6a0d Accept "maximum" and "minimum" modes as well as their abbreviations.
MFC after:	2 weeks
2005-09-26 12:16:27 +00:00
pjd
3d2323799f Test last minute changes, as gcc isn't too smart.
Reported by:	Steve Kargl <sgk@troutmask.apl.washington.edu>
2005-08-24 19:42:40 +00:00
pjd
6de559363a Add '-P' option which allows to specify pidfile. 2005-08-24 17:32:41 +00:00
bruno
16471328fb Change the default adaptive algorithm for phk's one. Thanks to phk
and Kevin Oberman for this work.

Submitted by:	Kevin Oberman
Reviewed by:	njl
Approved by:	njl
2005-08-24 07:52:59 +00:00
njl
b7400ec2b9 powerd(8) requires root permissions to run so notify the user if they
try to start it without this.

Submitted by:	Philip S. Schulz
MFC after:	2 days
2005-07-25 16:43:12 +00:00
ume
ab226d7010 Ignore EPERM from sysctl(3). It is returned when passive cooling
is active.

Reviewed by:	njl
2005-07-18 20:15:31 +00:00
ru
6b05ae87c7 Fixed markup.
Approved by:	re
2005-06-16 20:01:43 +00:00
njl
ef01f96275 Drop the default running value to 60% from 80%. Testing shows that we
cycle too much, wasting power if we trigger a jump to full speed too
easily.  CPU-bound tasks quickly push idle below this level.
2005-04-10 20:42:55 +00:00
njl
46d7cfdb4b Add support for recording the total energy used (in joules) when in
verbose mode.  This is useful for profiling new adaptive algorithms
in performance (via time(1)) and total energy consumed for a given
workload.
2005-04-10 19:02:29 +00:00
brueffer
c50bb2eb16 man page -> manual page 2005-02-27 15:49:07 +00:00
njl
a59663d2e5 Move the AC line checking code into its own function, reducing the
ifdef __i386__ stuff for APM.  Tested as working correctly on i386 and
compile-tested on sparc64.
2005-02-27 01:58:49 +00:00
marcel
3ebf74b8a8 Unbreak !i386 platforms. Only i386 has APM, so don't try to fallback
on APM on other platforms.
2005-02-27 00:23:19 +00:00
njl
2347ac87e8 Change the default levels for adaptive mode to 80% and 90%. On a system
with moderate IO going on, system usage can hover around 65-77% even
though it would benefit from higher performance.  Typically, only truly
idle systems pass the 90% mark so only demote then.
2005-02-26 23:22:00 +00:00
njl
91e6bfeedc Remove SRCS line since it isn't needed for single-source programs.
Pointed out by:	ru
2005-02-26 22:50:25 +00:00
njl
3960f7cce3 Import powerd(8), a utility for managing power consumption. Currently, it
just uses cpufreq(4) but in the future it should also do things like spin
down disks.  This is based on the work by Colin Percival (called "estctrl").
2005-02-26 21:17:31 +00:00