At 10:58 AM 10/30/1998 -0600, Les bureaux de credit du nord wrote:
>    I experience IO BOTTLENECK on our HP957SX with the following
>configuration:     & 2) 5 C2490A FW SCSI disk on first FW io card   C2490A
>FW SCSI disk on second FW io card Memory capacity 192 Mbytes 10 users 5.16
>Gbytes free of hard disk space operating system MPE ix 5.0 HP30391C.05.08
>TurboIMAGE/XL Image prefetch is turned on.   In an attempt to resolve the
>problem I have:   - defragmented the database to create large blocks of
>data with few  extents - performed a condense of all LDEVS - run howmessy
>software and performed repacks and checked for sysnonym  chains.     Most
>of my database access are keyed access.                 Any suggestions you
>might have would be greatly  appreciated.     Jean Huot Northern Credit
>Bureaus, [log in to unmask] (819) 762-4351

If you have any remote communications devices (eg. Hubs, muxes, etc.)
connected to the HP, it is possible that the trouble is originating with
one of them malfunctioning and producing an ultra-high volume of bogus
transactions. Such an event brought our previous HP3K to its knees. Once
identified, the malfunctioning device was shut-off and the I/O bottleneck
disappeared immediately.
Good Luck, Eric Bender