神马文学网[Packer01] Section 19.2. The Next Step
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The Next Step
Ifyou use packaged software, it may not be possible for you to tuneeither your applications or your database schema. And even if you docarry out your own development, it is neither realistic nor necessaryto seek perfect performance in tuning your applications and databaseschema. The 80/20 rule applies here as elsewhere: 80 percent of yourtuning effort could well be spent squeezing the last 20 percent ofperformance from your applications. Emphasize elimination of the majorbottlenecks.
Onceeverything possible has been done to deal with the class of problemsdescribed above, we are now ready to proceed to the next stage:monitoring the operating system and database.
Aftermonitoring, you should finally find yourself in a position to decidewhether your hardware is adequate to achieve satisfactory performance.
Butbefore we can develop a drill-down method for finding performanceproblems, we need to first look at the monitoring tools available tohelp with the task. The next chapter gives a snapshot of some of theuseful system monitoring tools available for Solaris.