What is the hot spot?

Hi there;

I read some content on the data warehouse, and I met a sentence as such:

(context) Hardware and i/o considerations in Data Warehouses-> automatic interleaving->

"For probes of index (for example, within a nested loop join or parallel index scan interval), interlacing of operating system allows you to avoid hot spots by evenly distributing I/O on the discs." http://docs.Oracle.com/CD/B10500_01/server.920/a96520/hardware.htm


What is the hot spot? Could you please explain briefly; Thanks in advance.

Post edited by: tahasozgen

Hot spots: a quarrel of disc, i.e. when an individual disk drive is overloaded with e/s and have the ability to answer within the time scheduled or desired. The term dates with database I/O performance, where a relatively small segment of the database (hot spot) is responsible for a high number of disk bed and written that overloading a single disc.

StorageRap: How wide distribution eliminates hot spots and displays excellent performance

Concerning

Girish Sharma

Tags: Database

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