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author | sheldonh <sheldonh@FreeBSD.org> | 2001-08-05 11:15:23 +0000 |
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committer | sheldonh <sheldonh@FreeBSD.org> | 2001-08-05 11:15:23 +0000 |
commit | 9c6f83510b81ca662660de747b0c3f085795dcb5 (patch) | |
tree | 75c0181a9e75f937f0d6b5347e0af6800aff3572 /share/man | |
parent | 08485c20e9ad152cb6a605ab6d3a331bfd9a2f86 (diff) | |
download | FreeBSD-src-9c6f83510b81ca662660de747b0c3f085795dcb5.zip FreeBSD-src-9c6f83510b81ca662660de747b0c3f085795dcb5.tar.gz |
Clean up previous delta:
* 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".
Diffstat (limited to 'share/man')
-rw-r--r-- | share/man/man4/aac.4 | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/share/man/man4/aac.4 b/share/man/man4/aac.4 index 22167b9..65afac2 100644 --- a/share/man/man4/aac.4 +++ b/share/man/man4/aac.4 @@ -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 |