Prtdiag -V displays 1GB Segment size & 128 MB Bank size with interleave factor of 8 for newly added 32 GB (Doc ID 1372786.1)

Last updated on NOVEMBER 02, 2011

Applies to:

Solaris SPARC Operating System - Version: 10 5/08 U5 and later   [Release: 10.0 and later ]
Information in this document applies to any platform.

Goal



# prtdiag -v

======================= Physical Memory Configuration ========================
Segment Table:
--------------------------------------------------------------
Base           Segment  Interleave  Bank     Contains
Address        Size     Factor      Size     Modules
--------------------------------------------------------------
0x0            64 GB    16         4 GB     MB/CMP0/BR0/CH0/D0
                                            MB/CMP0/BR0/CH1/D0
                                   4 GB     MB/CMP0/BR1/CH0/D0
                                            MB/CMP0/BR1/CH1/D0
                                   8 GB     MB/CMP1/BR0/CH0/D0
                                            MB/CMP1/BR0/CH1/D0
                                   8 GB     MB/CMP1/BR1/CH0/D0
                                            MB/CMP1/BR1/CH1/D0
                                   4 GB     MB/CMP0/BR0/CH0/D1
                                            MB/CMP0/BR0/CH1/D1
                                   4 GB     MB/CMP0/BR1/CH0/D1
                                            MB/CMP0/BR1/CH1/D1
                                   8 GB     MB/CMP1/BR0/CH0/D1
                                            MB/CMP1/BR0/CH1/D1
                                   8 GB     MB/CMP1/BR1/CH0/D1
                                            MB/CMP1/BR1/CH1/D1
                                   4 GB     MB/CMP0/MR0/BR0/CH0/D2
                                            MB/CMP0/MR0/BR0/CH1/D2
                                   4 GB     MB/CMP0/MR0/BR1/CH0/D2
                                            MB/CMP0/MR0/BR1/CH1/D2
                                   4 GB     MB/CMP0/MR0/BR0/CH0/D3
                                            MB/CMP0/MR0/BR0/CH1/D3
                                   4 GB     MB/CMP0/MR0/BR1/CH0/D3
                                            MB/CMP0/MR0/BR1/CH1/D3


--

There is a difference in the way prtdiag Segment Size is broken down for the original 64GB of memory and newly added 32GB of memory.
See snippet below of prtdiag-v output:  (why does it show up as 32 instances of 1GB Segment Size --- with interleave factor of 8 and bank size of 128 MB?)

0x1000000000   1 GB     8          128 MB   MB/CMP0/BR0/CH0/D0
                                            MB/CMP0/BR0/CH1/D0
                                   128 MB   MB/CMP0/BR1/CH0/D0
                                            MB/CMP0/BR1/CH1/D0
                                   128 MB   MB/CMP0/BR0/CH0/D1
                                            MB/CMP0/BR0/CH1/D1
                                   128 MB   MB/CMP0/BR1/CH0/D1
                                            MB/CMP0/BR1/CH1/D1
                                   128 MB   MB/CMP0/MR0/BR0/CH0/D2
                                            MB/CMP0/MR0/BR0/CH1/D2
                                   128 MB   MB/CMP0/MR0/BR1/CH0/D2
                                            MB/CMP0/MR0/BR1/CH1/D2
                                   128 MB   MB/CMP0/MR0/BR0/CH0/D3
                                            MB/CMP0/MR0/BR0/CH1/D3
                                   128 MB   MB/CMP0/MR0/BR1/CH0/D3
                                            MB/CMP0/MR0/BR1/CH1/D3

Solution

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