eSight performance graphs were deleted because insufficient memory

Publication Date:  2014-02-20 Views:  144 Downloads:  0
Issue Description
Customer loose all performance graph statistics collected with eSight V200R003C00SPC200 once at 4-7 days. 


Alarm Information
none
Handling Process
eSight periodically query data from database to implement performance graphs. Collection objects can be interogated at specific time. If you query a very large number of object in a short time, eSight will need a very large memory to store the all data into mysql database. 

In order to keep eSight running normally, eSight will monitor the amount of data in the database based on the system hardware conditions. Periodically dump the data in the database into files. Once data in database are dumped. It cannot be query on eSight.

Customer use low-end hardware to perform monitoring, because of this, periodically dump need to be performed. 
We suggest to upgrade the hardware and set collection period to 15 minutes. 
Root Cause
none.
Suggestions
none

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