similar to: some questions about tuned ...

Hi, The default "stop" action for the cpupower service seems to be to set the ondemand governor, but this fails. I can reproduce the issue directly by running cpupower: $ sudo cpupower frequency-set -g ondemand Setting cpu: 0 Error setting new values. Common errors: - Do you have proper administration rights? (super-user?) - Is the governor you requested available and modprobed? -

Add cpufreq governors: performance, powersave, userspace This patch add 3 more governors beside original running ondemand cpufreq governor. performance governor is with best performance, keeping cpu always running at highest freq; powersave governor is with best power save effect, keeping cpu always running at lowest freq; userspace governor provide user setting freq ability; Signed-off-by: Liu,

hi, twice in the last week I've been caught out where the laptop was running tuned with 'throughput-performance' profile on the work table, and I walked away, carried on working - and had the battery run flat in just over an hour. Compare this with tuned running the 'powersave' profile - will usually take the battery through to 3hrs+ - and if i just totally turn down the

On 03/25/2015 03:47 PM, Konrad Rzeszutek Wilk wrote: > On Mon, Mar 16, 2015 at 02:16:13PM +0100, Peter Zijlstra wrote: >> Hi Waiman, >> >> As promised; here is the paravirt stuff I did during the trip to BOS last week. >> >> All the !paravirt patches are more or less the same as before (the only real >> change is the copyright lines in the first patch).

On 03/25/2015 03:47 PM, Konrad Rzeszutek Wilk wrote: > On Mon, Mar 16, 2015 at 02:16:13PM +0100, Peter Zijlstra wrote: >> Hi Waiman, >> >> As promised; here is the paravirt stuff I did during the trip to BOS last week. >> >> All the !paravirt patches are more or less the same as before (the only real >> change is the copyright lines in the first patch).

On 09/23/2017 03:52 AM, hw wrote: > Thank you very much for the notice!? Looking at a couple machines, I found > that the automatic choice of profile isn?t what I would want. > > Now I wonder how everyone deals with this, i. e. do you set a profile once > and never change it, or do you keep changing the profile according to > circumstances?? Is changing it even advisable, i. e.

Jim Perrin wrote: > Last week we noticed that the default scheduler isn't being set properly > in CentOS 7. I haven't checked this for CentOS 6, but it might be worth > exploring. > > The TL;DR is unless you're running CentOS 7 on a laptop or as a virtual > guest, you should probably run 'tuned-adm profile throughput-performance' > > I wrote up the full

[I sent this to the RHEL4 list - but maybe someone on this list knows more] I have a number of dual CPU and dual CPU/dual core Opteron systems that are used as compute servers. In an effort to reduce power consumption and reduce heat output, I would like to make use of the PowerNow! capabilities to clock back the CPUs when the machines are idle. These machines are running a 2.6.9-42 RHEL4 kernel

I''ve a problem with managing power consumption on Intel Nehalem CPU. I''ve installed Xen 3.4 on our Dell PowerEdge T610 system on a Ubuntu 9.04 distribution. I recompiled the kernel 2.6.30rc5. Now I can see the c-states of the CPUs but no access to P-states information and the frequency scaling does not work. By the way, if I run the kernel 2.6.28.13 which is the last one

Last week we noticed that the default scheduler isn't being set properly in CentOS 7. I haven't checked this for CentOS 6, but it might be worth exploring. The TL;DR is unless you're running CentOS 7 on a laptop or as a virtual guest, you should probably run 'tuned-adm profile throughput-performance' I wrote up the full details here ->

Hello, I was not happy with the power consumption of CentOS 6 x86_64 on a new Lenovo Thinkpad x220 Tablet and I worked on reducing it. I just wanted to share with the list one of the changes which gave me the most significant improvement. As per http://www.williambrownstreet.net/blog/?p=387, add the following kernel arguments to the GRUB boot configuration: pcie_aspm=force

Hi, I have quite a few low-end development/test servers running continuously and I would like to better manage their power consumption. I have 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

On 7/4/19 10:18 PM, Steven Tardy wrote: > I would also look at power settings in the BIOS and c-state settings in the > BIOS and OS as disabling c-states (often enabled by default to meet > green/energy star compliance) can make a noticeable performance difference. I'd be surprised if it did, but now that you mention it, I think that we should probably mention more often that

Hi, This has been a problem since the xen-acpi-processor code was added to the kernel source. I wasn''t sure if the problem I was seeing was related to the old version (4.1.2) of Xen that I was using but now I''m on 4.2.0 and it still exists I thought I would check if I have a misconfiguration or if I have discovered a problem. My system is a dual AMD Opteron(tm) Processor

On 09/21/2017 07:02 PM, Fred Smith wrote: > On Thu, Sep 21, 2017 at 11:45:12AM -0700, Jim Perrin wrote: >> Last week we noticed that the default scheduler isn't being set properly >> in CentOS 7. I haven't checked this for CentOS 6, but it might be worth >> exploring. >> >> The TL;DR is unless you're running CentOS 7 on a laptop or as a virtual >>

Hello, Using kernel: 2.6.18-92.1.13.el5.centos.plus the cpu throttling works as desired (see 2 traces below) ------------- trace snips -------------- dmesg | grep -i pow ACPI: SSDT (v001 PTLTD POWERNOW 0x00000001 LTP 0x00000001) @ 0x3fff9b40 powernow-k8: Found 1 AMD Athlon(tm) 64 X2 Dual Core Processor 4600+ processors ( 2 cpu cores) (version 2.20.00) powernow-k8: 0 :

We have a lot of diskless Linux clients which are booting via PXELINUX or ETHERBOOT. The problem is that they are on for 24 hours and APM PowerSave mode works for ETHERBOOT only. But in the future we want to use PXELINUX only, which seems to have no features for APM or ACPI PowerSave included. Would it be possible to integrate such features in PXELINUX or is there a way to boot a special image

Hi wich tuned profile are the best for dom0 and domU? There are virt-host and virt-guest profiles for kvm, should I use them? If yes, should I use in domU ever virt-guest or is for example network-throughput profile better for a nfs/samba fs server inside domU better? -- ------ Greetz

On Thu, Sep 21, 2017 at 11:45:12AM -0700, Jim Perrin wrote: > Last week we noticed that the default scheduler isn't being set properly > in CentOS 7. I haven't checked this for CentOS 6, but it might be worth > exploring. > > The TL;DR is unless you're running CentOS 7 on a laptop or as a virtual > guest, you should probably run 'tuned-adm profile

Hi, Is there any documentation on enabling hypervisor support for both C and P-state control? On xen-unstable and linux-2.6.18-xen.hg, if I enable cpuidle=1 on the xen command line and then run xenpm, I will get output for C-states (shown below) but it complains that "Xen cpufreq is not enabled!" cpu id : 0 total C-states : 2 idle time(ms) : 73264 C0