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Lund Performance Solutions


SOS Volume Detail

The Volume Detail Screen

The Volume Detail screen provides detailed performance numbers for the volume group or logical volume specified.




Figure 33.1 SOS Volume Detail screen
To access the Volume Detail screen from any SOS display screen:
  • Type s from the SOS Enter command: prompt to view the Screen Selection Menu screen.
  • From the Screen Selection Menu screen, enter V (Volume Detail).
  • At the secondary prompt:
  • Press the Enter key to display the Volume detail information for the given volume.
  • Or, select another volume from the list.
  • The Volume Detail screen will display. An example of the screen is shown in Figure 33.1.
  • Use the y command key to toggle between the normal and extended process displays.
  • Volume Detail Display Items

    VOLUME DETAIL

    The VOLUME DETAIL portion of the Volume Detail screen displays information about the mirror write consistency (MWC) cache. The data items are described in the next table.
    Table 33.1 SOS VOLUME DETAIL data items
    Data Item
    Description
    Volume Dev File
    The device file associated with the specified volume.
    MWC Size
    MWC cache size (not applicable to logical volumes),
    MWC QLen
    The average cache queue length over the interval (not applicable to logical volumes),
    MWC Hits
    The number of cache hits (not applicable to logical volumes),
    MWC Misses
    The number of cache misses (not applicable to logical volumes),
    Logical
    Read Rate (/s)
    Logical reads per second (see "logical I/O").
    Write Rate (/s)
    Logical writes per second performed by a process.
    Avg Read Size (kb)
    The average size of a logical read.
    Avg Write Size (kb)
    The average size of a logical write.
    Physical
    Read Rate (/s)
    Physical reads per second (see "physical I/O").
    Write Rate (/s)
    Physical writes per second performed by a process.
    Avg Read Size (kb)
    The average size of a physical read.
    Avg Write Size (kb)
    The average size of a physical write.
    Raw
    Read Rate (/s)
    Raw memory reads per second (see "raw I/O").
    Write Rate (/s)
    Raw memory writes per second performed by a process.
    Avg Read Size (kb)
    The average size of a raw memory read.
    Avg Write Size (kb)
    The average size of a raw memory write.
    Virt Mem
    Read Rate (/s)
    Virtual memory reads per second (see "virtual memory I/O").
    Write Rate (/s)
    Virtual memory writes per second performed by a process.
    Avg Read Size (kb)
    The average size of a virtual memory read.
    Avg Write Size (kb)
    The average size of a virtual memory write.
    User FS
    Read Rate (/s)
    User reads per second (see "user I/O").
    Write Rate (/s)
    User writes per second performed by a process.
    Avg Read Size (kb)
    The average size of a user read.
    Avg Write Size (kb)
    The average size of a user write.
    SYS FS
    Read Rate (/s)
    System reads per second (see "system I/O").
    Write Rate (/s)
    System writes per second performed by a process.
    Avg Read Size (kb)
    The average size of a system read.
    Avg Write Size (kb)
    The average size of a system write.

    MAPPING INFORMATION

    The MAPPING INFORMATION portion of the Volume Detail screen provides mapping information between volume groups, logical volumes, and physical volumes (disks).


    For volume groups each physical disk, logical volume, and corresponding file system will be listed.


    For logical volumes, the volume group, physical volume (if the lv is contained within one disk), and the corresponding file system will be listed.

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