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Old 24th June 2010
barum87 barum87 is offline
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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.
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Old 24th June 2010
ocicat ocicat is offline
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Quote:
Originally Posted by barum87 View Post
The problem is that songs are generally playing too fast.
Here is a thread from the official misc@ mailing list which will help guide you. It's a bit dated, but the information is still valid:

http://marc.info/?t=123516885200003&r=1&w=2

It would be worth your time to search for related terms, as this topic tends to reappear infrequently.
Quote:
...setup RAID5 with the other three using softraid.
I can't help you here. Again, searching the misc@ archives is your best bet. Of course you can post to misc@, but it is highly recommended that searching the archives is done first.
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Old 24th June 2010
barum87 barum87 is offline
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Thank you! I did not think to search the mailing list.
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Old 24th June 2010
ocicat ocicat is offline
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Quote:
Originally Posted by barum87 View Post
Thank you! I did not think to search the mailing list.
It is often more productive to search the misc@ archives than spend time searching in Google.
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