On Thu, Mar 27, 2008 at 11:27:25PM -0600, Daniel Denson wrote: > not really. IO is not CPU bound and nicing a process only changes its > CPU usage priority (on linux 2.6) > > Now, if you have a processes eating up 100% of the CPU, renicing a > processes that uses heavy IO *can* have an effect as the program using > all the IO could gain(or loose) the ability to get to the CPU in a > timely manner.
I don't think that this should be a problem. IO is handled by the kernel. The process is stuck until the kernel finishes IO. When kernel finished IO, it doesn't care whether the process will pick up the results now or sometime later. That's at least what I _assume_ to happen, I don't know for sure. > generally speaking though, renicing and IO bound task wont make any > difference You could try ionice to lower the IO impact... HTH, Tino. -- www.craniosacralzentrum.de www.spiritualdesign-chemnitz.de www.forteego.de Tino Schwarze * Lortzingstraße 21 * 09119 Chemnitz ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
