To invoke DISCFREE enter:
or
RUN DISCFREE.PUB.SYS;INFO="[format][,ldev]" |
or
DISCFREE "[format][,ldev]" |
where
- format
is the specified display type. The format default is A.
- ldev
specifies a particular system volume. The ldev default is no ldev, causing all volumes to be displayed.
If you do not specify either of the parameters, DISCFREE prompts for them. If you enter format but not ldev, DISCFREE reports on all logical disk devices. To report
on a particular volume, enter the name of the volume set. For example,
to display information about the volume USER_VOL_SET, you would enter:
RUN DISCFREE.PUB.SYS;INFO=",,USER_VOL_SET" |
The format values you can specify are:
| A | A histogram showing numbers of blocks by size categories. |
| B | Shows transient
and free space allocations in sectors. |
| C | Shows transient
and free space allocations in percentage of total device capacity. |
| D | Shows disk allocation
summary in sectors. |
| E | Shows disk allocation summary
in percentage of total space. |
Displaying the histogram |
 |
To display a histogram for ldev 1 only enter:
To display the histogram for all disk devices enter:
Or, you may enter the DISCFREE command (without any options) and, at the prompt,
enter only the format and ldev or only the format. For example:
Enter [<format>][,<ldev>] : "A,1"
Enter [<format>][,<ldev>] : "A" |
Displaying the allocation summary |
|
To display the allocation summary as a percent of total space on all logical
disk devices, enter:
If you omit quotation marks, the default is the specified
format for all devices.
DISCFREE displays the following information:
| DEVICE
SIZE | The capacity, in
sectors, of the device. |
| TRANS
SPACE | The number of sectors
currently allocated for transient space. Transient space is used
for objects which are not permanent files, such as stacks, heaps and
system tables. |
| MAX
TRANS SPACE | An upper limit
on the number of sectors that may be allocated for transient space.
TRANS SPACE should not exceed this number although it may if the percentage of MAX TRANS SPACE space is lowered
using VOLUTIL. |
| FREE
SPACE | The amount of space
on a device currently not used for transient or permanent space. Space available
for use. |
| AVAIL
TO TRANS SPACE | The amount of space
on the device currently available for use as transient space. The
difference between MAX TRANS SPACE and TRANS SPACE. If this difference
exceeds the amount of FREE SPACE, DISCFREE displays the amount of FREE SPACE. |
| PERM
SPACE | The number of sectors
currently allocated for permanent space. User and system files use
permanent space. |
| MAX
PERM SPACE | An upper limit
on the number of sectors that may be allocated for permanent space.
PERM SPACE should not exceed this number although it may if the percentage of MAX PERM SPACE space is lowered
using VOLUTIL, or if enough space is consumed by files brought
in during an UPDATE. |
| AVAIL TO PERM SPACE | The amount of space on the device
currently available for use as permanent space. The difference between
MAX PERM SPACE and PERM SPACE. |
AVAIL TO TRANS SPACE and AVAIL TO PERM SPACE may be negative values. For example, if TRANS SPACE exceeded MAX
TRANS SPACE, AVAIL TO TRANS SPACE would be negative. This could
occur if VOLUTIL were used to change the maximum percentage of
MAX TRANS SPACE to a level lower than currently used for TRANS SPACE.
Also, if enough permanent space is used by files brought in during
an UPDATE, PERM SPACE may exceed MAX PERM SPACE, which would make
AVAIL TO PERM SPACE a negative number.
Additional Discussion |
|
For more information on the general topic of disk volumes
refer to Volume Management Reference Manual.
For more information on the DSTAT command refer to MPE/iX Commands Reference
Manual.
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