search for: powertop

Hello guys, Did anyone noticed how green CentOS 6 is compared to the previous release? I've been running a couple of "CentOS 6" VMs (on our vSphere environment) for the last couple of weeks and noticed a BIG difference when it comes to CPU usage when the VM is completely idle. I would like to share what I've seen in our environment: PfSense 2.0 (FreeBSD) VM: 40 Mhz CentOS

hello tincers, when I on battery on my notebook, running powertop, I get nic:<tinc-net-name> as the most power consuption resource in my notebook just after the screen. This happens no matter if I have traffic or not. I am not really sure that if this is really a tinc fault or a tap/tun implementation that never sleeps. any advice? -------------- next pa...

...found interesting information on how to perform CPU scaling (e.g. [1] or [2]). But I cannot find if there is a way to (software) monitor power consumption on CentOS (or other such data like CPU temperature, fan speed etc.). What I read so far is that support is quite limited in this kernel (e.g. PowerTop not providing useful information). Before I start tuning I would like to be able to measure whether my changes are having any impact at all. Thanks in advance, Mathieu [1] http://www.lesswatts.org/tips/cpu.php [2] http://www.spencerstirling.com/computergeek/powersaving.html

....com --- Created attachment 127486 --> https://bugs.freedesktop.org/attachment.cgi?id=127486&action=edit New dmesg output after manually turning on power management So Lekensteyn asked me to run a few commands to also shut off the bus the GPU is on. If I do so and then proceed by running powertop on battery, intel_pstate complains about turbo not being available, a usb device disconnects, a while later Nouveau resumes kernel object trees, Bluetooth reconnects and nouveau suspends again. The commands are: # echo auto > /sys/bus/pci/devices/0000\:00\:1c.4/power/control # grep . /sys/bus/...

...ss? It forces the agent in the child process to poll the parent, so it can exit when the parent finishes. If the agent was the parent process, it could use wait() instead. I'm sure there's some reason. It'd be nice to take ssh-agent off the list of polling processes you get with powertop[1], however far down it is. Please CC me in replies Yours, Alan [1] http://www.linux-powertop.org

Hi, I would have filed this as a bug but bugs.xiph.org doesn't seem to work (despite quite enthusiastically claiming to :)). So here goes: I'm seeing quite a few wakeups/sec in icecast2 2.3.2 on Debian Testing. In fact, whether icecast is doing anything or not, powertop reports 44.3 wakeups per second. This is pretty big number, on my laptop it means icecast alone is responsible for every third wakeup on idle. I have no time to start digging through the code right now, but please post if you have a hunch where these wakeups are coming from. If I have time lat...

...s on 3x 300GB SCSI disks as /dev/sdb (total 572GB) (RAID-5) Stock Centos 6.4 x64, everything updated. Kernel : 2.6.32-358.2.1.el6.x86_64 #1 SMP My Load always shows : top - 10:30:21 up 23:09, 1 users, load average: 0.99, 0.96, 0.79 yet there is no services what-so-ever doing anything. Using PowerTOP I can see that xfsaild is causing second most wake-ups (after kernel core : hrtimer_start (tick_sched_timer) ) < Detailed C-state information is not P-states (frequencies) 3.00 Ghz 100.0% 1500 Mhz 0.0%...

...p://www.williambrownstreet.net/blog/?p=387, add the following kernel arguments to the GRUB boot configuration: pcie_aspm=force i915.i915_enable_rc6=1 i915.lvds_downclock=1 i915.i915_enable_fbc=1 (in /boot/efi/EFI/redhat/grub.conf since I use EFI, /boot/grub/grub.conf otherwise) As measured using PowerTop, this made the power consumption decrease from 20W to 11W ! (I had already decreased it from 25W to 20W with the usual tips of disabling hardware, shutting down services, switching tuned profiles, etc.) All in all, battery time was more than multiplied by two, and the computer is now much more sil...

Hi, My laptop runs a local IMAP server so that I'm immune from breaking my mail client, and when playing around with powertop I discovered that Dovecot (in particular imap-login) wakes up every 1000ms and then every 50ms even when no clients are connected. A bit of stracing shows this: gettimeofday({1180875699, 667917}, NULL) = 0 <0.000010> poll([{fd=7, events=POLLIN|POLLPRI|POLLERR|POLLHUP|POLLNVAL}, {fd=10, even...

...is a Tuxedo XC1706 (aka Schenker XMG P706 aka Clevo P671RG) (i7-6700HQ/GTX 970M), external outputs (HDMI and 2 x DP) are wired to the NVIDIA card. The intel HD only has the laptop screen attached. Issue 1 (minor): ---------------- Without pcie_port_pm=off and on battery I see DynOff, but ~26W with powertop (i.e. nvidia card is not turned off). With pcie_port_pm=off and on battery I see DynOff and 16-18W with powertop (i.e. nvidia card is turned off). Issue 2: -------- With pcie_port_pm=off and on AC I always see DynPwr even though the nvidia card is unused (see below) - shouldn't this change to...

...end; I have never installed any linux variant on a laptop, so when I did it was startling to find out how incredibly terrible the battery life / power management functions were. I was getting ~2 hours of life just doing simple web browsing. After spending an afternoon tweaking everything (using powertop, thinkfan etc), I was able to increase that marginally. Then, I had someone recommend that I use win7 as my host OS, and then use a VM for rails development. While doing some research, I came across Vagrant. I got it set up and installed using one of the boxes made for rails development, howev...

...mpatible controller: NVIDIA Corporation TU104GLM [Quadro RTX 4000 Mobile / Max-Q] (rev a1) What I need for now is either nouveau, or bbswitch if it still works to turn the nvidia chip off every time I power on/reboot/plug/unplug external power. if I don't load the nouveau module, I get this in powertop: Bad Runtime PM for PCI Device NVIDIA Corporation TU104GLM [Quadro RTX 4000 Mobile / Max-Q] powertop cannot really turn it off and I get The battery reports a discharge rate of 63.0 W If I load the nouveau driver, the chip gets turned off (great), but it's unstable and hard crashes m...

I see Intel has released a new tool. Oh, it requires some patches to the kernel to record latency times. Good thing people don''t mind patching their kernels, eh? So who can write the equivalent latencytop.d the fastest? ;-) http://www.latencytop.org/ -- cburgess at qnx.com

...DIA Corporation TU104GLM [Quadro RTX 4000 Mobile / Max-Q] (rev a1) > > What I need for now is either nouveau, or bbswitch if it still works to > turn the nvidia chip off every time I power on/reboot/plug/unplug > external power. > if I don't load the nouveau module, I get this in powertop: > Bad Runtime PM for PCI Device NVIDIA Corporation TU104GLM [Quadro RTX 4000 Mobile / Max-Q] > powertop cannot really turn it off and I get > The battery reports a discharge rate of 63.0 W > > If I load the nouveau driver, the chip gets turned off (great), but it's &gt...

...menico.iezzi.201 at gmail.com QA Contact: xorg-team at lists.x.org Created attachment 141734 --> https://bugs.freedesktop.org/attachment.cgi?id=141734&action=edit kernel log Overall, nouveau works without problem in managing discrete GPU PM, and if I check power consumption using powertop on a fresh boot it reports an average battery discharge rate of ~7W like always. After I resume the laptop from suspend, /sys/kernel/debug/vgaswitcheroo/switch reports that the device is dynamically turned off: 0:IGD:+:Pwr:0000:00:02.0 1:DIS: :DynOff:0000:01:00.0 But if I check with powertop, I g...

https://bugs.freedesktop.org/show_bug.cgi?id=110830 Bug ID: 110830 Summary: [nouveau] GeForce GTX 1660 Ti (mobile) not supported (NV168/TU116) Product: xorg Version: 7.7 (2012.06) Hardware: Other OS: All Status: NEW Severity: normal Priority: medium Component:

https://bugs.freedesktop.org/show_bug.cgi?id=98398 --- Comment #5 from rick.2889 at gmail.com --- Adding pcie_port_pm=off to my kernel command line causes the card to turn off and powertop to report ~7.5W of power usage. According to Lekensteyn this reverts nouveau to the 4.7 and lower behavior of using DSM, so I think this is a regression from using the new method. -- You are receiving this mail because: You are the assignee for the bug. -------------- next part -------------- An...

https://bugs.freedesktop.org/show_bug.cgi?id=98398 --- Comment #6 from rick.2889 at gmail.com --- Booting without pcie_port_pm=off, while blacklisting nouveau on boot, then executing: echo 0 > /sys/bus/pci/devices/0000:01:00.0/d3cold_allowed && modprobe nouveau also causes powertop to report a ~7.5W value. -- You are receiving this mail because: You are the assignee for the bug. -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://lists.freedesktop.org/archives/nouveau/attachments/20161022/a9bc7e1c/attachment.html>

On Wed, Oct 21, 2009 at 5:53 PM, Karl Heyes <karl at xiph.org> wrote: >> I'm seeing quite a few wakeups/sec in icecast2 2.3.2 on Debian Testing. >> In fact, whether icecast is doing anything or not, powertop reports 44.3 >> wakeups per second. This is pretty big number, on my laptop it means >> icecast alone is responsible for every third wakeup on idle. > > This will vary depending on what you have icecast doing but you should find > that the trunk code has less wakeups. ?The conn...

Hi all, I use CentOS 5.5 x86_64 on my laptop. I have couple of entries in /etc/sysctl.conf entries according to the recommendations http://www.lesswatts.org/projects/powertop/ When Gnome Desktop starts something resets them to defaults. For example 'vm.dirty_writeback_centisecs = 1500' resets back to 30. Does anybody have any idea how to workaround this? Thanks. Andrej.