View Single Post
  #1   (View Single Post)  
Old 24th June 2010
barum87 barum87 is offline
New User
 
Join Date: Jun 2010
Posts: 2
Default New to OpenBSD: problem with music, raid?

I just installed OpenBSD for the first time on my computer yesterday and I have some questions.

1) I installed mpd and ncmpc for music, and I used libao in the mpd.conf. The problem is that songs are generally playing too fast. Some of them sound like chipmunks singing. Has anyone experienced this? I looked through the openbsd documentation, but I could not find any specific setup/fix. I tried playing with audioctl, but I can't seem to change any values.
(Not sure if this is connected to the next problem)


2) I have 4 hard drives on my computer, so I used one for root partition, and setup RAID5 with the other three using softraid. I copied my backed up files from my laptop through nfs and scp, but it took almost a whole day to copy the data (connected through LAN). So, I tried benchmarking the disk io performance using bonnie++ and the results are:

Code:
Single hardrive
====

Version  1.03       ------Sequential Output------ --Sequential Input- --Random-
                    -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
iron.my.domain   3G  2790   3  2744   3  3829   2 38803  61 63115  17 115.8   0
                    ------Sequential Create------ --------Random Create--------
                    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP /sec %CP
                 16 12860  19 +++++ +++ 13066  13 16239  22 +++++ +++ 13971  11
iron.my.domain,3G,2790,3,2744,3,3829,2,38803,61,63115,17,115.8,0,16,12860,19,+++++,+++,13066,13,16239,22,+++++,+++,13971,11


RAID5 with 3 disks
====
Version  1.03       ------Sequential Output------ --Sequential Input- --Random-
                    -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
iron.my.domain   3G 37630  39 35307  16  7529   2 36849  56 36871   7 78.7   0
                    ------Sequential Create------ --------Random Create--------
                    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP /sec %CP
                 16 +++++ +++ +++++ +++ +++++ +++ 29301  29 +++++ +++ 10789  22
iron.my.domain,3G,37630,39,35307,16,7529,2,36849,56,36871,7,78.7,0,16,+++++,+++,+++++,+++,+++++,+++,29301,29,+++++,+++,10789,22
Not too sure how to interpret these numbers. If anyone has some data to compare, it would be very helpful.
Reply With Quote