topic Re: powersave daemon - SLES9 on DL360 G3 - necessary? in Operating System - Linux

powersave daemon - SLES9 on DL360 G3 - necessary?

Eric Meiring — Fri, 14 Apr 2006 12:52:50 GMT

Hello,

I have SUSE Linux Enterprise 9 on an HP DL360 G3. Not long after the OS installation, I noticed that when I log into the server GUI, I get a message that appears briefly and says:
"The powersave daemon is not running or you are not a member of the powersave system group. Starting it will improve performance: /usr/sbin/rcpowersave start"

When I go to /user/sbin, I don't see a "rcpowersave" file - I do see "rcpowersaved" though (note the d at the end).

What I'm wondering is, what is HPs/the local guru's recommendation with regards to this on HP hardware?

Also, what are the drawbacks (if any) if I choose to implement this?

Thanks!

Re: powersave daemon - SLES9 on DL360 G3 - necessary?

Eric Meiring — Thu, 20 Apr 2006 16:34:33 GMT

Interestingly, I still get this message on the KDE desktop (but not in the syslog file) when I log in.

Even after I changed the POWERSAVE_CPUFREQD_MODULE to "off", as recommended by the errors in /var/log/messages (I don't want CPU scaling on this server).

Hmm....

Re: powersave daemon - SLES9 on DL360 G3 - necessary?

Stuart Browne — Thu, 20 Apr 2006 20:16:03 GMT

My thoughts are simple:

It's a server.

If it's an activly used server, then having power-saving measures on it (for anything other than a screen, which should be turned *off* anyway (the ultimate in power-saving techniques!)) are redundant. You want the thing to *ROCK*.. Not save a few cents off your power bill.

Re: powersave daemon - SLES9 on DL360 G3 - necessary?

Eric Meiring — Fri, 21 Apr 2006 10:23:03 GMT

I'd have to agree. But that message just gets annoying. :)

Regardless, I won't lose sleep over it.

Re: powersave daemon - SLES9 on DL360 G3 - necessary?

Jun Yu — Fri, 21 Apr 2006 15:20:01 GMT

Hi,

Pls disable powersaved daemon from chkconfig list , DL360g3 server runs well without it.

I did a small hpc cluster with such operation on all 8 nodes.

Good Luck,

Re: powersave daemon - SLES9 on DL360 G3 - necessary?

Eric Meiring — Fri, 21 Apr 2006 16:18:13 GMT

Thanks for the info...but could you tell me exactly how to disable that? (Sorry, I'm pretty new at Linux in general).

Re: powersave daemon - SLES9 on DL360 G3 - necessary?

Stuart Browne — Fri, 21 Apr 2006 16:35:35 GMT

Make sure the 'apmd' service isn't running.

Re: powersave daemon - SLES9 on DL360 G3 - necessary?

Jun Yu — Sun, 23 Apr 2006 08:58:46 GMT

Hi Eric,

To turn off the powersaved service forever, execute the following steps:

1. #chkconfig --list|grep power

the screen will show you
hostname:~ # chkconfig --list|grep power
powersaved 0:off 1:off 2:on 3:on 4:off 5:on 6:off
powertweakd 0:off 1:off 2:off 3:off 4:off 5:off 6:off

It shows your powersaved will be started when the system startup to runlevel 3 and 5

2. #chkconfig powersaved off

this command will stop the powersaved daemon starting after next reboot.

3. re-run the first command to confirm you do turn off the powersaved service from the system service list.

4. #rcpowersaved stop to stop the powersaved service immediately.

Good Luck,

Re: powersave daemon - SLES9 on DL360 G3 - necessary?

Eric Meiring — Mon, 24 Apr 2006 08:52:10 GMT

Thanks guys. I now see that the service is off, even after I rebooted.

I still get that annoying message when I log on using the VNC GUI, however. Ah well - as long as the service isn't up, I'm ok with that.