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Document ENABLE_VFS_IOOPT

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Eivind Eklund 2000-09-19 10:36:19 +00:00
parent b0d17ba69e
commit c16dc61bd2
2 changed files with 24 additions and 2 deletions
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13
sys/conf/NOTES
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@ -718,6 +718,18 @@ options EXT2FS
# inclusion on shell boxes.
options VFS_AIO
# Enable the code UFS IO optimization through the VM system. This allows
# use VM operations instead of copying operations when possible.
#
# Even with this enabled, actual use of the code is still controlled by the
# sysctl vfs.ioopt. 0 gives no optimization, 1 gives normal (use VM
# operations if a request happens to fit), 2 gives agressive optimization
# (the operations are split to do as much as possible through the VM system.)
#
# Enabling this will probably not give an overall speedup except for
# special workloads.
options ENABLE_VFS_IOOPT
# Cryptographically secure random number generator; /dev/[u]random
device random
@ -2543,7 +2555,6 @@ options DEBUG
options DEBUG_LINUX
#options DISABLE_PSE
options ENABLE_ALART
options ENABLE_VFS_IOOPT
options FB_DEBUG
options FB_INSTALL_CDEV
options FE_8BIT_SUPPORT

13
sys/i386/conf/NOTES
View file

@ -718,6 +718,18 @@ options EXT2FS
# inclusion on shell boxes.
options VFS_AIO
# Enable the code UFS IO optimization through the VM system. This allows
# use VM operations instead of copying operations when possible.
#
# Even with this enabled, actual use of the code is still controlled by the
# sysctl vfs.ioopt. 0 gives no optimization, 1 gives normal (use VM
# operations if a request happens to fit), 2 gives agressive optimization
# (the operations are split to do as much as possible through the VM system.)
#
# Enabling this will probably not give an overall speedup except for
# special workloads.
options ENABLE_VFS_IOOPT
# Cryptographically secure random number generator; /dev/[u]random
device random
@ -2543,7 +2555,6 @@ options DEBUG
options DEBUG_LINUX
#options DISABLE_PSE
options ENABLE_ALART
options ENABLE_VFS_IOOPT
options FB_DEBUG
options FB_INSTALL_CDEV
options FE_8BIT_SUPPORT