Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #90440 > unrolled thread

Running cool and silent

Back to article view | Back to comp.lang.python

Contents

  Running cool and silent Rustom Mody <rustompmody@gmail.com> - 2015-05-12 02:33 -0700
    Re: Running cool and silent Rustom Mody <rustompmody@gmail.com> - 2015-05-12 02:34 -0700
    Re: Running cool and silent Skip Montanaro <skip.montanaro@gmail.com> - 2015-05-12 08:16 -0500
    Re: Running cool and silent Anssi Saari <as@sci.fi> - 2015-05-19 12:14 +0300
    Re: Running cool and silent Anssi Saari <as@sci.fi> - 2015-05-19 12:16 +0300

#90440 — Running cool and silent

For some reason my Dell laptop runs hot and noisy in linux but cool and
silent in Windows-8

Running

$ echo "min_power" | sudo tee /sys/class/scsi_host/host*/link_power_management_policy

makes the fan slow/stop.

But I am not sure what it does!!
[I dont want my laptop fried and its rather HOT out here right now :-) ]

So is this command safe?
Does someone know what it does? [Dont remember where I found it]

[toc] | [next] | [standalone]

#90441

On Tuesday, May 12, 2015 at 3:03:53 PM UTC+5:30, Rustom Mody wrote:
> For some reason my Dell laptop runs hot and noisy in linux but cool and
> silent in Windows-8
> 
> Running
> 
> $ echo "min_power" | sudo tee /sys/class/scsi_host/host*/link_power_management_policy
> 
> makes the fan slow/stop.
> 
> But I am not sure what it does!!
> [I dont want my laptop fried and its rather HOT out here right now :-) ]
> 
> So is this command safe?
> Does someone know what it does? [Dont remember where I found it]

Whoops!!
Wrong list... Sorry

[toc] | [prev] | [next] | [standalone]

#90448

On Tue, May 12, 2015 at 4:33 AM, Rustom Mody <rustompmody@gmail.com> wrote:
> $ echo "min_power" | sudo tee /sys/class/scsi_host/host*/link_power_management_policy
>
> makes the fan slow/stop.
>
> But I am not sure what it does!!

My guess is it lowers the clock speed. To bring this into the realm of
Python, here's something you might try:

python -m test.pystone
echo "min_power" | sudo tee
/sys/class/scsi_host/host*/link_power_management_policy
python -m test.pystone

My guess is that you will see the pystone value reduced after issuing
the min_power command.

Skip

[toc] | [prev] | [next] | [standalone]

#90833

Rustom Mody <rustompmody@gmail.com> writes:

> For some reason my Dell laptop runs hot and noisy in linux but cool and
> silent in Windows-8
>
> Running
>
> $ echo "min_power" | sudo tee /sys/class/scsi_host/host*/link_power_management_policy
>
> makes the fan slow/stop.
>
> But I am not sure what it does!!
> [I dont want my laptop fried and its rather HOT out here right now :-) ]

That just turns on the power management on your SATA links. Goggle SATA
ALPM if you like. It's perfectly safe.

[toc] | [prev] | [next] | [standalone]

#90834

Rustom Mody <rustompmody@gmail.com> writes:

> Does someone know what it does? [Dont remember where I found it]

One more comment: run Intel's Powertop to see what else you can do to
improve power management on your laptop.

[toc] | [prev] | [standalone]

Back to top | Article view | comp.lang.python

csiph-web