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20 Commits

Author SHA1 Message Date
Dag-Erling Smørgrav
f1e58a9ac4 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
Dag-Erling Smørgrav
af2cde52b3 Look for cpu/ichss instead of cpu/p4tcc, which is i386/amd64-only. 2006-02-18 16:01:07 +00:00
Dag-Erling Smørgrav
aa5cfd0420 Load cpufreq at startup if it isn't there already. 2006-02-18 11:35:12 +00:00
Dag-Erling Smørgrav
2f7a934c4f Don't use threads when there's no real reason to. 
MFC after:	2 weeks
 2006-01-03 21:32:02 +00:00
Nate Lawson
33a00fc0b1 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
Nate Lawson
b194bdc2ae Whitespace fix. 2005-10-23 00:55:56 +00:00
Nate Lawson
72699a2216 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
Nate Lawson
a1819ab598 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
Dag-Erling Smørgrav
db20dc4dbb Accept "maximum" and "minimum" modes as well as their abbreviations. 
MFC after:	2 weeks
 2005-09-26 12:16:27 +00:00
Pawel Jakub Dawidek
a9ed1f7ffc 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
Pawel Jakub Dawidek
84148fd1da Add '-P' option which allows to specify pidfile. 2005-08-24 17:32:41 +00:00
Bruno Ducrot
7065e0e9f4 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
Nate Lawson
c996f586de 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
Hajimu UMEMOTO
f92a4b93c5 Ignore EPERM from sysctl(3). It is returned when passive cooling 
is active.

Reviewed by:	njl
 2005-07-18 20:15:31 +00:00
Nate Lawson
2f8ad6c087 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
Nate Lawson
ab19351c39 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
Nate Lawson
48bd710904 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 Moolenaar
5f4aa96715 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
Nate Lawson
b3c9af5615 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
Nate Lawson
5883360b2f 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