src/sys/modules/khelp, branch release/9.0.0FreeBSD source treehttps://cgit-dev.freebsd.org/src/atom?h=release%2F9.0.02011-01-24T23:08:38ZImport the ERTT (Enhanced Round Trip Time) Khelp module. ERTT uses the2011-01-24T23:08:38ZLawrence Stewartlstewart@FreeBSD.org2011-01-24T23:08:38Zurn:sha1:050570efa79efcc9cf5adeb545f1a679c8dc377b
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
Add build infrastructure for Khelp modules.2011-01-24T07:50:29ZLawrence Stewartlstewart@FreeBSD.org2011-01-24T07:50:29Zurn:sha1:6987b09f93f1ea3d6621a60b177b9769696e0ef7
Sponsored by: FreeBSD Foundation
Reviewed by: bz
MFC after: 3 months