HFS Global Data Section

Offsets Name Length Format Description
0 0 R746GMXV 4 binary Value of VIRTUAL(MAX) (in MB).
4 4 R746GUSV 4 binary Total amount (in pages) of virtual storage in use.
8 8 R746GMNF 4 binary Value of FIXED(MIN) (in MB).
12 C R746GUSF 4 binary Total amount (in pages ) of permanently fixed storage in use.
16 10 R746GMC 8 l_float Number of times the metadata for a file was found in virtual storage (cache) during file lookup.
24 18 R746GMNC 8 l_float Number of times the metadata for a file was not found in virtual storage (cache) during file lookup and an index call was necessary which may result in an I/O.
32 20 R746G1C 8 l_float Number of times the first page of a data file was requested and found in virtual storage (cache).
40 28 R746G1NC 8 l_float Number of times the first page of a data file was requested and not found in virtual storage (cache) and an I/O was necessary.
48 30 R746GLRC 4 binary Return code from OMVS BPX1PCT for DisplayBufferLimits command.
52 34 R746GLRS 4 binary Reason code from OMVS BPX1PCT for DisplayBufferLimits command.
56 38 R746GSRC 4 binary Return code from OMVS BPX1PCT for DisplayGlobalStats command.
60 3C R746GSRS 4 binary Reason code from OMVS BPX1PCT for DisplayGlobalStats command.
64 40 R746GSFL 1 binary Status flags.
Bit
Meaning when set
0
OMVS kernel not ready
1
No buffer limit data
2
No global data
3
Partial global data
4-7
Reserved.
65 41   7   Reserved.