hp-ux 11iv3 multipath VERY SLOW .. hp rp3440 and ibm ds4300

Hi there-
Have an hp-ux 11iv3 rp3440 with  AB379-60101 dual port HBA hooked up to a HP Storageworks 4/8 San Switch hooked up to an IBM ds4300.

Basically the multipath is not working at all.  I usually do quick tests of writing files

# dd if=/dev/zero of=1gigfile bs=1024 count=1000000

which takes anywhere between 15 to 30 seconds.  In this case it takes over 10 minutes.  When I pull the cable from the left port or the right port, it takes the 15 to 30 seconds.  When both cables are plugged in it takes over 10 minutes

any ideas?  Googled around a bit and tried a few things.  Updated the driver to

  FibrChanl-01                  B.11.31.0909   FibrChnl;HW=A6826A,A9782A,A9784A,AB378A/B,AB379A/B,AB465A,AD193A,AD194A,AD300A

Also found that commonio was not installed on the system so downloaded and installed that.

Any ideas?  I'm coming to my wit's end here.  

I am not using pvlinks (that I know of).  When I ran the ioscan it already showed the multipath to the disk.  Here is the ioscan output:

# ioscan -f -n -N -C disk
Class     I  H/W Path  Driver S/W State   H/W Type     Description
===================================================================
disk      3  64000/0xfa00/0x0  esdisk   CLAIMED     DEVICE       HP 73.4GST373455LC /dev/disk/disk3   /dev/rdisk/disk3
disk      4  64000/0xfa00/0x1  esdisk   CLAIMED     DEVICE       HP 73.4GST373455LC /dev/disk/disk4   /dev/rdisk/disk4
disk      5  64000/0xfa00/0x2  esdisk   CLAIMED     DEVICE       TEAC    DV-28E-C /dev/disk/disk5   /dev/rdisk/disk5
disk     46  64000/0xfa00/0xc  esdisk   CLAIMED     DEVICE       IBM     1722-600 /dev/disk/disk46   /dev/rdisk/disk46

# ioscan -f -n -C disk
Class     I  H/W Path       Driver S/W State   H/W Type     Description
=======================================================================
disk      2  0/0/2/0.0.0.0  sdisk   CLAIMED     DEVICE       TEAC    DV-28E-C /dev/dsk/c0t0d0   /dev/rdsk/c0t0d0
disk      0  0/1/1/0.0.0    sdisk   CLAIMED     DEVICE       HP 73.4GST373455LC /dev/dsk/c2t0d0   /dev/rdsk/c2t0d0
disk      1  0/1/1/1.2.0    sdisk   CLAIMED     DEVICE       HP 73.4GST373455LC /dev/dsk/c3t2d0   /dev/rdsk/c3t2d0
disk      6  0/3/1/0.1.7.0.0.0.0  sdisk   CLAIMED     DEVICE       IBM     1722-600 /dev/dsk/c9t0d0   /dev/rdsk/c9t0d0
disk     30  0/3/1/1.1.7.0.0.0.0  sdisk   CLAIMED     DEVICE       IBM     1722-600 /dev/dsk/c8t0d0   /dev/rdsk/c8t0d0
#

Any guesses?

Thanks in advance!