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author | Lawrence Stewart <lstewart@FreeBSD.org> | 2011-01-24 23:08:38 +0000 |
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committer | Lawrence Stewart <lstewart@FreeBSD.org> | 2011-01-24 23:08:38 +0000 |
commit | 050570efa79efcc9cf5adeb545f1a679c8dc377b (patch) | |
tree | 8ecd0666e2a0cc863323b0b79a0e980cfd705e8d /sbin/fdisk/fdisk.c | |
parent | 5f3b301a43c68d4a8eac808098c750af879fe6fb (diff) | |
download | src-050570efa79efcc9cf5adeb545f1a679c8dc377b.tar.gz src-050570efa79efcc9cf5adeb545f1a679c8dc377b.zip |
Import the ERTT (Enhanced Round Trip Time) Khelp module. ERTT uses the
Khelp/Hhook KPIs to hook into the TCP stack and maintain a per-connection, low
noise estimate of the instantaneous RTT. ERTT's implementation is robust even in
the face of delayed acknowledgements and/or TSO being in use for a connection.
A high quality, low noise RTT estimate is a requirement for applications such as
delay-based congestion control, for which we will be importing some algorithm
implementations shortly.
In collaboration with: David Hayes <dahayes at swin edu au> and
Grenville Armitage <garmitage at swin edu au>
Sponsored by: FreeBSD Foundation
Reviewed by: bz and others along the way
MFC after: 3 months
Notes
Notes:
svn path=/head/; revision=217806
Diffstat (limited to 'sbin/fdisk/fdisk.c')
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