Teradata administrators worldwide face similar challenges.
I propose creating a worldwide database containing the characteristics of Teradata systems. This will allow for easy comparison and analysis of performance issues between different systems.
My initial report displays the CPU idle time and the number of disk I/O waits for every hour throughout the day.
To contribute to the database construction, please execute the following SQL statement on your system:
EXTRACT(HOUR FROM TheTime) time_of_day,
((sum(CPUIoWait)) / (sum(CPUIoWait+CPUUExec+CPUUServ+CPUIdle)))*100 as CPU_WAITING,
((sum(CPUIdle)) / (sum(CPUIoWait+CPUUExec+CPUUServ+CPUIdle)) ) *100 as CPU_IDLE
FROM
DBC.ResUsageSpma
WHERE TheDate between DATE-30 AND DATE-1 GROUP BY time_of_day ORDER BY 1;
The query will execute in just a few seconds and retrieve 24 records, each representing an hour.
Typically, the data in the DBC.ResUsageSpma table is regularly purged and saved in a backup table. It is presumed that you have knowledge of the implementation and location of this process on your system.
Please provide details regarding the system type, number of nodes, and AMPs.
Please send your results to [email protected] (plain text or Excel Sheet).
I will collect all results and make them available online (charts & tables). Here is our current collection:
Kindly inform me of any additional measures that may interest you. I believe that a database of measures would be advantageous for everyone.
Best regards,
DWH Pro
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By sending this information, aren’t we violating customer’s right to infrastructure privacy??
I cannot oversee the legal situation regarding the confidentiality of such information. Depending on where you reside and where you work, anything from full disclosure to strict confidentiality is possible.
I recommend clarifying with your company if such information is allowed to be made public. Any information published shall be done in an anonymized form, i.e. without mentioning the very system or company it came from.
Treat it like an opinion poll where you are asked about your preferences and your situation, without being named.
Thank you for the comment.