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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

...emperature, 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

Hi, all These days, I am interested in green IT area for low power OS So, I have a question about it. Is there any good idea or comments about power management related with cgroup based resource management? I have no idea about that, but it seems to be possible to find a good concept. And I hope so Is it some strange question? ^^ Regards, Dong-Jae Kang

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.

file_remove_suid() should be called with i_mutex held, file_update_time() too. So move them after mutex_lock(). Plus, check the return value of kmalloc(). Signed-off-by: WANG Cong <amwang@redhat.com> --- diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 7c3cd24..cd36301 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -944,14 +944,17 @@ static ssize_t btrfs_file_write(struct file

Shadies and Mentlemen; I am trying to be green and put our backup servers to sleep during the day and have them wake on LAN and fire back up at night for our nightly backups as "sleep" is a sort of low power usage mode. (At this point I would be curious to know the different levels of sleep, what can I achieve? Does my server just drop into a low power state, or can I stop the hard

Hi, we have some problems with acpidump running on Xen Dom0. On 64 bit Dom0 it will trigger the OOM killer, on 32 bit Dom0s it will cause a kernel crash. The hypervisor does not matter, I tried 4.1.3-rc2 as well as various unstable versions including 25467, also 32-bit versions of 4.1. The Dom0 kernels were always PVOPS versions, the problems starts with 3.2-rc1~194 and is still in 3.5.0-rc3.