Whisper data format ....

gistfile1.txt

Whisper data base format
------------------------

Byte Map of whisper file format

+------------------+
| Aggregation func | 4 bytes             - Type of allocate strategies for file
+------------------+                       * Use of fallocate if it is available, book the disk space
|    Max time      |                       * Use of sparse, fragmented, if it is configured.
|    retention     | 4 bytes               * Booking whole space writing zeros over there
+------------------+
|   file factor    | 4 bytes
+------------------+          
|  count archives  | 4 bytes  
+------------------+          
|  Archive info 1  | 12 bytes 
|+----------------+|          
||  data offset   ||---       
|+----------------+|   |                            
|| sec. per point ||   |      
|+----------------+|   |      
||  num. points   ||   |                            
|+--------------- +|   |
+------------------+   |
|  Archive info 2  |   |
|+----------------+|   |
||  data offset   ||------
|+----------------+|   |  |
|| sec. per point ||   |  |
|+----------------+|   |  |
||  num. points   ||   |  |
|+--------------- +|   |  |
+------------------+   |  |
|    point 1       |<--'  |
+------------------+      |
|    point 2       |      |
+------------------+      |
|       .          |      |
|       .          |      |
|       .          |      |
|       .          |      |
+------------------+      |
|    point 1       |<-----'
+------------------+
|    point 2       | 
+------------------+
|       .          |
|       .          |
|       .          |
|       .          |        
+------------------+