IBM T200F manual Data Compression Log Parameters

Note: For this command, a megabyte is equal to 1 048 576 bytes. As an example,

a value of 17487h in Parameter 3 is equal to 95 367 megabytes, which is

equal to 100 000 000 000 bytes.

Data Compression Log

The Data Compression Log Page Code is 32h. Parameter byte fields 0 and 1 are 2 bytes long. Parameter byte fields 2 through 9 are each 4 bytes long.

The supported fields are listed in Table 25.

Table 25. Data Compression Log Parameters

Parameter	Description	Length	DU	LP	LBIN
0	Read Compression	2	0	0	0
	ratio × 100
1	Write Compression	2	0	0	0
	Ratio × 100
2	Megabytes transferred	4	0	0	0
	to server
3	Bytes transferred to	4	0	0	0
	server
4	Megabytes read from	4	0	0	0
	tape
5	Bytes read from tape	4	0	0	0
6	Megabytes transferred	4	0	0	0
	from server
7	Bytes transferred from	4	0	0	0
	server
8	Megabytes written to	4	0	0	0
	tape
9	Bytes written to tape	4	0	0	0

Parameters 2 through 9 occur as pairs that represent a large number of bytes transferred. The first 4-byte parameter represents the number of whole megabytes transferred, rounded to the nearest megabyte. The second 4-byte parameter represents the difference between this number of megabytes and the actual number of bytes. This may be a signed quantity.

This data may be reset, but may not be written.

Chapter 2. Command Support 25