Detailed information on a specific segment ID

The -D option displays detailed memory-usage statistics for segments.

The following is an example:

# svmon -D 38287 -b
Segid: 38287
Type:  working
PSize: s (4 KB)
Address Range: 0..484
Size of page space allocation: 2 pages (  0,0 MB)
Virtual: 18 frames ( 0,1 MB)
Inuse: 16 frames ( 0,1 MB)

          Page   Psize    Frame     Pin        Ref        Mod  ExtSegid    ExtPage
           341    s       527720     N          N          N         -          -
           342    s       996079     N          N          N         -          -
           343    s       524936     N          N          N         -          -
           344    s       985024     N          N          N         -          -
           347    s       658735     N          N          N         -          -
           348    s        78158     N          N          N         -          -
           349    s       174728     N          N          N         -          -
           350    s       758694     N          N          N         -          -
           404    s       516554     N          N          N         -          -
           406    s       740622     N          Y          N         -          -
           411    s       528313     N          Y          Y         -          -
           412    s      1005599     N          Y          N         -          -
           416    s       509936     N          N          Y         -          -
           440    s       836295     N          N          Y         -          -
           443    s        60204     N          N          Y         -          -
           446    s       655288     N          N          Y         -          -

The explanation of the columns are as follows:

Page

Specifies the index of the page within the segment.

Psize

Specifies the size of the page (s for 4 KB, m for 64 KB, L for 16 MB and S for 16 GB).

Frame

Specifies the index of the real memory frame that the page resides in.

Pin

Specifies a flag indicating whether the page is pinned.

Ref

Only specified with the -b flag. Specifies a flag indicating whether the page's reference bit is on.

Mod

Only specified with the -b flag. Specifies a flag indicating whether the page is modified.

ExtSegid

In case the page belongs to an extended segment that is linked to the inspected segment, the virtual segment identifier of this segment is displayed.

ExtPage

In case the page belongs to an extended segment that is linked to the inspected segment, the index of the page within that extended segment is displayed.

           Page     Psize   Frame     Pin        Ref        Mod  ExtSegid    ExtPage
          65574     s       345324     N          N          N    288071         38
          65575     s       707166     N          N          N    288071         39
          65576     s       617193     N          N          N    288071         40

The -b flag shows the status of the reference and modified bits of all the displayed frames. After it is shown, the reference bit of the frame is reset. When used with the -i flag, it detects which frames are accessed between each interval.