Re: so many applications wake up so often
On Fri, Sep 08, 2006 at 12:36:17PM -0500, John Goerzen wrote: I have no idea what Gnome, KDE, etc. are doing to my disk -- all I know is that they seem to have business with it all the time, and it makes it very difficult for the disk to spin down. FYI, kernel 2.6.17 has support for tracing all block device events from userspace. Gabor -- - MTA SZTAKI Computer and Automation Research Institute Hungarian Academy of Sciences - -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
so many applications wake up so often
Using strace, I discovered many programs are constantly busy these days. No wonder one can't seem to save power. There ought to be a law... = Subject: Re: silent PC vs. emacs Newsgroup: gmane.emacs.pretest.bugs From: Dan Nicolaescu [EMAIL PROTECTED] ...The OLPC/Fedora people are working on eliminating application wakeups in order to save power. I cite here from one of the bug reports about this: We're working with RH engineers on a tickless idle kernel, which has the goal of reducing power and hypervisor loads when the system is idle. This is done by removing the regular ticking clock when the system is idle, so that in theory long sleep periods are possible for the hardware (or hypervisor). The kernel portion of this works great, however when using a gnome desktop there are many however when using a gnome desktop there are many timers going off all the time for userspace, so many that the actual savings are not so great (about 250 events per second). Given that so many applications wake up so often, what emacs does might not be measurable at this point, but it might make a difference in the future. (If anyone is interested in more details, the bug tracking this activity is: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=204906 ) -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: so many applications wake up so often
On Fri, Sep 08, 2006 at 08:17:09PM +0800, Dan Jacobson wrote: One other thing here -- and I would argue perhaps even more important -- is hard disk access. I've spent quite some time tuning that, and with traditional services (cron, MTAs, syslog, etc.) it's a bit time-consuming but possible. I have no idea what Gnome, KDE, etc. are doing to my disk -- all I know is that they seem to have business with it all the time, and it makes it very difficult for the disk to spin down. -- John -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: so many applications wake up so often
Hi, On Friday 08 September 2006 19:36, John Goerzen wrote: I have no idea what Gnome, KDE, etc. are doing to my disk -- all I know is that they seem to have business with it all the time, and it makes it very difficult for the disk to spin down. do you mount with noatime und nodiratime? regards, Holger pgp2HivpIEKoL.pgp Description: PGP signature
Re: so many applications wake up so often
On Fri, Sep 08, 2006 at 10:17:00PM +0200, Holger Levsen wrote: Hi, On Friday 08 September 2006 19:36, John Goerzen wrote: I have no idea what Gnome, KDE, etc. are doing to my disk -- all I know is that they seem to have business with it all the time, and it makes it very difficult for the disk to spin down. do you mount with noatime und nodiratime? I have been using noatime for quite awhile now. mount(8) does not mention nodiratime anywhere, and I have never used it. -- John -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: so many applications wake up so often
On 9/9/06, John Goerzen [EMAIL PROTECTED] wrote: I have been using noatime for quite awhile now. mount(8) does not mention nodiratime anywhere, and I have never used it. Same here. But googling for nodiratime shows it's definitely in the kernel, and in wide use. Learned something today... cheers, martin -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: so many applications wake up so often
On Sat, Sep 09, 2006 at 01:52:12PM +1200, Martin Langhoff wrote: On 9/9/06, John Goerzen [EMAIL PROTECTED] wrote: I have been using noatime for quite awhile now. mount(8) does not mention nodiratime anywhere, and I have never used it. Same here. But googling for nodiratime shows it's definitely in the kernel, and in wide use. Learned something today... Grepping through the kernel source, though, it doesn't seem to be used on any common Linux filesystems -- just on ones such as ntfs. -- John -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
