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Disable the ctl driver in GENERIC.

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It unfortunately steals a fair chunk of RAM at startup even if it's not
actively used, which prevents FreeBSD VMs of 128MB from successfully
booting and running.
This commit is contained in:
Adrian Chadd 2013-03-02 08:12:41 +00:00
parent fdf25068b7
commit fe138cc2af
3 changed files with 9 additions and 2 deletions
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7
UPDATING
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@ -26,6 +26,13 @@ NOTE TO PEOPLE WHO THINK THAT FreeBSD 10.x IS SLOW:
disable the most expensive debugging functionality run
"ln -s 'abort:false,junk:false' /etc/malloc.conf".)
20130301:
The ctl device has been disabled in GENERIC for i386 and amd64.
This was done due to the extra memory being allocated at system
initialisation time by the ctl driver which was only used if
a CAM target device was created. This makes a FreeBSD system
unusable on 128MB or less of RAM.
20130208:
A new compression method (lz4) has been merged to -HEAD. Please
refer to zpool-features(7) for more information.

2
sys/amd64/conf/GENERIC
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@ -138,7 +138,7 @@ device sa # Sequential Access (tape etc)
device cd # CD
device pass # Passthrough device (direct ATA/SCSI access)
device ses # Enclosure Services (SES and SAF-TE)
device ctl # CAM Target Layer
#device ctl # CAM Target Layer
# RAID controllers interfaced to the SCSI subsystem
device amr # AMI MegaRAID

2
sys/i386/conf/GENERIC
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@ -146,7 +146,7 @@ device sa # Sequential Access (tape etc)
device cd # CD
device pass # Passthrough device (direct ATA/SCSI access)
device ses # Enclosure Services (SES and SAF-TE)
device ctl # CAM Target Layer
#device ctl # CAM Target Layer
# RAID controllers interfaced to the SCSI subsystem
device amr # AMI MegaRAID