High Low value in System.Statistics.get_global_statistics

Lots of history in that question. When we first developed iControl in 2001, the SOAP standard and encodings didn't support 64 bit numbers. To add to that, Java didn't support unsigned values so we were stuck signed ints for the high and low values (thus the negative numbers in some of them). We then had to find a way to turn our 64 bit statistic values into numbers that the various client toolkits supported. In hindsight, we probably should have also passed down a string with the 64 bit value in it.

 

 

As for the high and low values, those are the high and low 32 bits of the 64 bit number.

 

 

The calculation to convert a high and low 32bit value is this:

 

 

64 bit value = ((unsigned long)high)^32 + (unsigned long)low.

 

 

The fact that some are 0 and some aren't, just means the numbers are bigger.

 

 

Hope this helps...

 

 

-Joe

 

In hindsight, we probably should have also passed down a string with the 64 bit value in it.

 

 

v11.2 perhaps ?

 

 

:)

 

 

H

I think the formula is bit shifted, not a power of 32, given the following result:

statistics[] =
        (Common.Statistic){
           type = "STATISTIC_CLIENT_SIDE_BYTES_IN"
           value =
              (Common.ULong64){
                 high = 97
                 low = 841866601
              }
           time_stamp = 0
        },
        (Common.Statistic){
           type = "STATISTIC_CLIENT_SIDE_BYTES_OUT"
           value =
              (Common.ULong64){
                 high = 390
                 low = 2041437072
              }
           time_stamp = 0
        },

The formula for the result would be

value = high << 32 + low

Giving value = (97 << 32) + 841,866,601 = 417,453,694,313

The alternative would yield (97^32) + 841866601 = 3773075507922571775273744352333525624409237957166570158701128042