[OpenAFS] Slow AFS performance

[Jason Edgecombe]

I'm experiencing poor AFS performance on under Sparc solaris 9 09/05HW
running Openafs server 1.4.1 on a Sun StorageTeck 3511 Fibre channel  to
SATA array

At first, I thought that having UFS logging disabled was the culprit,
but I have enabled UFS logging and I am using the namei server, but
performance still stinks. It took 1.5 hours to move a 3.2GB volume to
the server. Things seem fine except on the Fibre channel disks.

Here is a snippet from "iostat 2":

   tty        sd1           ssd0          ssd1          ssd2           cpu
 tin tout kps tps serv  kps tps serv  kps tps serv  kps tps serv   us sy
wt id
   3   41   0   0    0  575  82   60    0   0    0    0   0    0    0  0
26 73
  21  125   0   0    0  544  78   78    0   0    0    0   0    0    0  1
26 72
   0   40   0   0    0  663  96   67    0   0    0    0   0    0    0  1
23 76
   0   40   0   0    0  442  50   23    0   0    0    0   0    0    0  0
25 75
  21   47   0   0    0  398  50   23    0   0    0    0   0    0    0  0
25 75
  20  102   0   0    0  388  51   24  1558   6   41    0   0    0    0 
2 28 69
   0   40   0   0    0  425  54   24  45657  56  140    0   0    0    1
13 62 25
   0   41   3   1    9  735  57   22  46988  60  136    0   0    0    0
14 57 28
   0   41   0   0    0  826  66   23  44894  63  138    0   0    0    0
14 59 27
   0   41   0   0    0  951  73   24  46346  61  137    0   0    0    0
14 59 26
   0   66   1   1    7  812  73   35  10235  48  116    0   0    0    0 
6 36 58
   0   41   0   0    0  1026  89   31  228   2   21    0   0    0    0 
2 24 74


kps on ssd0 (/vicepa) stays around 300-400. The 44000kps on ssd1 is when
I ran "dd if=/dev/zero of=/vicepc/dummy" to a different disk on the same
array

My bonnie++ performance numbers for vicepa are here:
http://www.coe.uncc.edu/~jwedgeco/bonnie.html


What could AFS be doing that causes the performance to stink?

Thanks,
Jason