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Suggested config for MAXDB 64bit on Linux + Dual Core

Suggested config for MAXDB 64bit on Linux + Dual Core

2006-10-22       - By Martin Cordova

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Hello:

I just installed MaxDB 7.6.0.34 X86-64 on kernel 2.6.16 (opensuse
10.1), Pentium D-945  3.4Ghz +1GB RAM DDR2-667, with a RAID-0 (See http://AID-0.ora-code.com) based on
2 SATA2 disks with 16MB buffer. Experimenting with a test database and
some commonly used queries. Largest table contains about 420.000 rows.

I gave about 460MB of cache to MAXDB.

Problem observed:

MaxDB consumes (according to command "top") 100% or more CPU time,
even for queries with a low cost plan. I can't see any disk activity,
and cache hits display 100%. Even when there is no client activity,
the MaxDB process (kernel) shows constant activity, up to 30% or more
in some cases. Is this normal??

I guess my queries are becoming CPU intensive, instead of IO
intensive. Is there anything I can tune in the database parameters? I
observed that with this version COROUTINES=YES, instead of load
balancing, is this a good default for this platform?

Any advice will be appreciated.

Regards,
Martin
--
Dinamica - RADical J2EE framework
open source, easy and powerful
http://www.martincordova.com

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