Anyone know of any restrictions on the max physical IO
(under Solaris8) that is imposed by file systems?  To
illustrate -

Using a tablespace on a raw device under veritas vol
mgr
- maxphys is 512k
- vxio:vol_maxio is 512k
- db block size is 8k
- db multi read is 64
and as expected, a level 8, 10046 trace shows me that
I can get 512k max io...so far, so good

If I repeat the exercise after putting a file system
(vxfs or ufs) on this device, then the best I can get
is 256k.

Any Solaris internal people out there ?

Cheers
Connor

=====
Connor McDonald
http://www.oracledba.co.uk (mirrored at 
http://www.oradba.freeserve.co.uk)

"Some days you're the pigeon, some days you're the statue"

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