In <19D3B904B96FD11197A70060084EEE6E174AB1@frbucmsx03medge>, on
03/02/98 at 02:39 PM,
"Boireau, Eric (MED-Cap Gemini)" <BOIREER AT EUROMSX.GEMSE DOT FR> said:
>Does any one has perform some benchmark on disk configuration with
>ADSM V3.1 NT. The hardware used is an HP LxPro 2xPentium Pro 200 with
>50GB Raid 5. May be there is some configuration in WinNT which are
>better that other for performance. Actually all ADSM disk volume (DB,
>LOG, STG) are on the same NTFS partition (32GB). I have note when the
>data goes directly to tape it is more speed that using disk storage
>pool (Tape :DLT7000 STK9714).
If you install on an NT 4.0 Server, be sure to go into the registry
and alter the memory allocation method so that Process Working Set is
preferred over Disk Working Set. The default (for a Server) will
allow the Disk Cache to grow until the entire ADSM code (process) is
swapped out permanently and runs thrashing like hell, executing from
the swap file.
This applies to pretty much *any* NT/S 4 performing Disk intensive
duties (other than simple file serving -- ie, application serving), no
matter what the application is (in our case, ADSM v2r1) (unless, of
course, it is a Microsoft Application, which knows how to "fix" the
ill-conceived memory management algorithms.
I have not seen this problem on NT 3.51 -- it is a "feature" of NT 4.
I do not at this moment remember the exact registry key that you need
to modify, but I will look it up this morning and post it to the list
later today.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Keith Medcalf (416) 410-5791 http://www.dessus.com/ IBM
OS/2, LAN Server, DB2, TCP/IP, DOS, Windows 95, Windows NT
Finger or email kmedcalf-pgp AT dessus DOT com for my PGP Public Key
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