NAME
acctsuspend, acctresume — suspend and resume accounting when available disk space reaches threshold
VALUES
Default
acctsuspend:
2
acctresume:
4
Allowed values
acctresume:
-100 - 101
acctsuspend:
-100 - acctresume-1
Recommended values
acctsuspend:
2 - 6
acctresume:
4 - 10
(But more than acctsuspend)
DESCRIPTION
The
acctsuspend
and
acctresume
tunables control when accounting stops and
resumes due to disk space constraints.
When free disk space on the file system being used by accounting reaches the
suspension threshold, which is the
acctsuspend
percentage relative to the percentage of disk space available only to the
superuser, accounting is suspended until such time as the free disk
space reaches the resumption threshold, which is the
acctresume
percentage relative to the percentage of disk space available only to the
superuser.
Note:
Since the
acctsuspend
and
acctresume
values are specified relative to the percentage of disk space available only
to the superuser, negative values of these parameters can make sense.
For example, if the superuser has reserved 10 percent of the disk space on the
file system at file system creation time, and acctsuspend is -5 and
acctresume is 0, the suspension threshold will be 5 percent of the total
disk space and the resumption threshold will be 10 percent of the total disk
space.
Who Is Expected to Change This Tunable?
Anyone using accounting.
Restrictions on Changing
Changes to this tunable take effect at the next reboot.
When Should the Value of This Tunable Be Raised?
Increasing either variable should be considered when it is necessary to
maintain a higher percentage of free space on the accounting filesystem.
What Are the Side Effects of Raising the Value of This Tunable?
The higher either value is, the less accounting data may be captured.
The further the values are separated, the greater the amount of potentially
lost accounting data.
When Should the Value of This Tunable Be Lowered?
If additional disk space is needed for accounting data, and it cannot
be obtained by moving files off of the filesystem, then the value of
acctsuspend
should be lowered.
What Are the Side Effects of Lowering the Value of This Tunable?
Filesystem performance (writing accounting records) decreases as the filesystem
fills up.
In turn, this will decrease the overall performance of accounting processes.
What Other Tunables Should Be Changed at the Same Time?
When changing either of these tunables, both should be considered.
WARNINGS
All HP-UX kernel tunable parameters are release specific.
This parameter may be removed or have its meaning changed in
future releases of HP-UX.
Installation of optional kernel software, from HP or other vendors,
may cause changes to tunable parameter values. After installation,
some tunable parameters may no longer be at the default or
recommended values. For information about the effects of
installation on tunable values, consult the documentation
for the kernel software being installed.
For information about optional kernel software that was
factory installed on your system, see
HP-UX Release Notes
at
http://docs.hp.com.
AUTHOR
acctsuspend
and
acctresume
were developed by HP.
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