Just saw Gustin's suggestion as I was posting the same thing, definitely check out what hdparm says about your drive settings - turning on DMA will make a huge difference.
Run a test before and after with DMA off/on using: hdparm -tT /dev/hda for example. The min value is what will be used for reconstruction if there is user/application I/O taking place and max is when there isn't. If you don't care, just set them both high to the same value. On Monday 27 June 2005 15:16, Roy Souther wrote: > I did try changing those values but no that high. I did not find any > information as to what that value could be. > I will try to crank it up more. > > What about speed_limit_min? Should I leave that alone? > > On Mon, 2005-06-27 at 13:31 -0700, Curtis Rempel wrote: > > Quoting Roy Souther <[EMAIL PROTECTED]>: > > > Creating my own distribution for my own servers, based on Debian. When > > > it comes time to create the raid partions using mdadm I do so in the > > > way pointed out to me on all the web sites I have found that talk about > > > it. > > > > > > # My install script does this > > > echo -en "y\r" | mdadm --create "/dev/md0" --level 1 --raid-devices=2 > > > "/dev/hda5" "/dev/hdc5 > > > watch "cat /proc/mdstat" > > > > > > The problem is that this is very very slow. A 40GB partition has be > > > going all morning (4 hours) so far and it is only up to about 80% done. > > > > > > If I use Mandrake to do an install with the same partitions the section > > > where the installer builds the RAID only takes about 30 minutes to do > > > the same job. > > > > > > Any ideas how I could make the mdadm create new blank RAID partitions > > > faster? > > > > Roy, > > > > You may want to check to see if there are differences between Debian and > > Mandrake in /proc/sys/dev/raid/speed_limit_max > > > > If so, wind it up a little tighter using: > > > > echo -n 500000 > /proc/sys/dev/raid/speed_limit_max > > > > Hope that helps, > > > > Curtis > > > > > > _______________________________________________ > > clug-talk mailing list > > [email protected] > > http://clug.ca/mailman/listinfo/clug-talk_clug.ca > > Mailing List Guidelines (http://clug.ca/ml_guidelines.php) > > **Please remove these lines when replying > > Roy Souther > www.SiliconTao.com > Let Open Source help your business move beyond. > > For security this message is digitally authenticated by GnuPG. -- Curtis Rempel, RHCE, RHCX, LPIC-1, LPIC-2 Enigma Logic Inc. www.enigma-logic.ca [EMAIL PROTECTED] 403.804.8633 _______________________________________________ clug-talk mailing list [email protected] http://clug.ca/mailman/listinfo/clug-talk_clug.ca Mailing List Guidelines (http://clug.ca/ml_guidelines.php) **Please remove these lines when replying
