sys_attrs_advfs(5)sys_attrs_advfs(5)NAMEsys_attrs_advfs - advfs subsystem attributes
DESCRIPTION
This reference page lists and describes attributes for the Advanced
File System (advfs) kernel subsystem. Refer to the sys_attrs(5) refer‐
ence page for an introduction to the topic of kernel subsystem
attributes.
An asterisk (*) preceding the name of an attribute in the following
list means that the attribute can be configured at run time. Values of
other attributes cannot be changed without rebooting the system. The
maximum percentage of the malloc pool (pageable memory) that can be
possibly be allocated for AdvFS access structures.
Default value: 25 (percent)
Minimum value: 5 (percent)
Maximum value: 95 (percent)
AdvfsAccessMaxPercent is a high-water mark of possible memory
use for access structures. If AdvFS cannot allocate any more
access structures because of the memory limit imposed by Advf‐
sAccessMaxPercent, AdvFS posts an event and writes a message in
the following form to the console:
Could not create new AdvFS access structure;
already at AdvFS memory limit as specified by
AdvfsAccessMaxPercent value of percent.
At this point, the system administrator can either kill pro‐
cesses to cause files to be closed or set AdvfsAccessMaxPercent
to a higher value.
One of the following four values that control what AdvFS does in
the event of a domain panic. The live_dump() function mentioned
in these descriptions is a system call used only inside the ker‐
nel. This system call creates vmunix and vmcore files in the
/var/adm/crash directory. In other words, values that enable the
live_dump() call allow the creation of dump files without call‐
ing panic() to crash the system. Do not call live_dump() for a
domain panic in either an unmounted or mounted domain. Call
live_dump() only if the domain panic occurred in a domain that
is mounted. Call live_dump() if a domain panic occurred in
either a mounted or unmounted domain. Promote the domain panic
to a system panic. This causes the system to crash, which
yields a crash dump when the system is rebooted. The number of
512-byte blocks that can be on the readylazy queue before AdvFS
starts moving I/O requests to the device queue.
Default value: 16 K (blocks)
Minimum value: 0, which disables buffering on the readylazy
queue
Maximum value: 32 K (blocks) A value that controls whether modi‐
fied (dirty) mmapped pages are flushed to disk during a sync()
system call. If the value is 1, the dirty mmapped pages are
asynchronously written to disk. If the value is 0 (zero), dirty
mmapped pages are not written to disk during a sync system call.
Default value: 1
SEE ALSOsys_attrs(5)
AdvFS Administration
System Configuration and Tuning
sys_attrs_advfs(5)
