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Clean up previous delta:

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* Fix typo (defautls).
* Don't use hard sentence breaks in new text.
* Don't introduce the use of the second person (you).
* Use the standard "IMPLEMENTATION NOTES" section name instead of the
  non-standard "TUNING".
This commit is contained in:
sheldonh 2001-08-05 11:15:23 +00:00
parent 12e38bb3be
commit c0e08b2583
1 changed files with 14 additions and 8 deletions
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22
share/man/man4/aac.4
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@ -100,18 +100,24 @@ disk/container interface
.It Pa /boot/kernel/aac.ko
aac loadable module
.El
.Sh TUNING
.Sh IMPLEMENTATION NOTES
The read-only sysctl
.Va hw.aac.iosize_max
defautls to 65536 and may be set at boot time to another value via
defaults to 65536 and may be set at boot time to another value via
.Xr loader 8 .
This value determines the maximum data transfer size allowed
to/from an array. Setting it higher will result in better performance,
especially for large sequential access patterns. BEWARE: internal limitations
of the card limit this value to 64K for arrays with many members. While it
may be safe to raise this value, do so AT YOUR OWN RISK. Note also that
performance peaks at a value of 96K, and drops off dramatically at 128K, due
to other limitations of the card.
to/from an array.
Setting it higher will result in better performance,
especially for large sequential access patterns.
.Em Beware :
internal limitations
of the card limit this value to 64K for arrays with many members.
While it may be safe to raise this value, this is done
.Em at the operator's own risk .
Note also that
performance peaks at a value of 96K,
and drops off dramatically at 128K,
due to other limitations of the card.
.Sh DIAGNOSTICS
Compiling with
.Dv AAC_DEBUG