Re: Anyone used Tru64 "spike" for Performance Optimization ?

  • From: "Kevin Lidh" <kevin.lidh@xxxxxxxxx>
  • To: hkchital@xxxxxxxxxxxxxx
  • Date: Tue, 3 Oct 2006 10:28:52 -0600

When I was with my former company, we did do a spike test.  It was a large
billing system (J2EE/WebLogic) running against a 2 TB, 3-node, 9.2.0.4.0 RAC
database (I have more specs if you're interested).  We did see a nominal
gain but it really paled in comparison to the gains from fixing bad SQL (no
binds, indexing, etc.).  What our SA told us was that if we changed any of
the variables such as workload, the spiked version of the binary could be
worse than the original.  So you'd have to re-evaluate performance from
time-to-time.  I'm trying to contact the SA who did the spike with us in
case you have more specific questions.

On 10/3/06, Hemant K Chitale <hkchital@xxxxxxxxxxxxxx> wrote:


The 9i  and 10g Administrator's Reference ,  Appendix D /F on Tru64
mentions
"spike" as a performance optimization tool on Tru64.
eg

http://download-west.oracle.com/docs/cd/B19306_01/server.102/b15658/appf_tru.htm

http://download-west.oracle.com/docs/cd/B19306_01/install.102/b14206/pretru.htm
(even the 9iR2 and 10gR1 certification pages mention "spike").
Apparently, the last version release of spike was in 2002.
I cannot find much information on it at HP's site.
(http://h30097.www3.hp.com/dtk/spike_ov.html)

Has anyone used "spike"  ? Under what sort of database/application
load did you use "spike" ? What performance gains did you obtain ?

Hemant


Hemant K Chitale http://web.singnet.com.sg/~hkchital


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