Disk very slow in FreeBSD

Depo Catcher depocatcher at gmail.com
Sat Jul 10 02:57:39 UTC 2010

I've tried everything here:
and here: http://forums.freebsd.org/showthread.php?t=15722
Also followed this: 

I have a 2TB WD drives that I would like to use as one big data partition.
I'm using UFS2. No raid, nothing fancy. I'm on FreeBSD 6.4 Release.

Under windows I can easily read/write about at ~75MB/s without doing 
nothing but formatting it.
My friend has the same drives in Linux, he says he can get ~50MB/s on 
his very low end system (crap cpu and only 256mb of ram).

Under FreeBSD, my write is at best ~6MB/s and read is about ~9MB/s. The 
CPU, amount of ram, etc are all better than both the above boxes so 
don't think it's bound by anything externally like that. From what I 
read, the partitions aren't aligned correctly?

What's going on here? For start to finish, how should I partition and 
format these so they don't suck?


[root at fire2 ~/drive]# diskinfo -v /dev/da3
         512             # sectorsize
         2000396746752   # mediasize in bytes (1.8T)
         3907024896      # mediasize in sectors
         243201          # Cylinders according to firmware.
         255             # Heads according to firmware.
         63              # Sectors according to firmware.


8 partitions:
#         size      offset     fstype     [fsize     bsize    bps/cpg]
a:  3906961408           1     4.2BSD       4096     32768


bsdlabel -R  /dev/da3 datadrive.cfg
newfs -S 4096 -b 32768 -f 4096 -O 2 -U -m 8 -o space -L u2 /dev/da3


/dev/da3                /u3             ufs     rw              2       2

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