convert tcp timestamps to scaled sbintime
AbandonedPublic
Actions

Authored by kmacy on Dec 4 2015, 2:04 AM.

Details

Reviewers

rrs
lstewart

Group Reviewers

transport

Summary

convert tcp timestamps to using a scaled sbintime based off of the TSC

See the following paper for background:
Safe and Effective Fine-grained TCP Retransmissions for Datacenter Communication

https://www.cs.cmu.edu/afs/cs.cmu.edu/Web/People/ekrevat/docs/SIGCOMMIncast.pdf

NB: this a first iteration and still needs to be extended to support unsynchronized TSCs and refactor the MD bits more appropriately

Test Plan

Compare the incast mitigation effects of sub-millisecond RTO versus legacy tick based timestamps

Diff Detail

Repository

rS FreeBSD src repository - subversion

Lint

Lint Skipped

Unit

Tests Skipped

Event Timeline

kmacy updated this revision to Diff 10717.Dec 4 2015, 2:04 AM

kmacy retitled this revision from to convert tcp timestamps to scaled sbintime.

kmacy updated this object.

kmacy edited the test plan for this revision. (Show Details)

kmacy added a reviewer: lstewart.

kmacy set the repository for this revision to rS FreeBSD src repository - subversion.

kmacy added a project: transport.

kmacy added subscribers: benno, gnn, rwatson.

Herald added a subscriber: imp. · View Herald TranscriptDec 4 2015, 2:04 AM

rstone subscribed.Dec 4 2015, 3:24 AM

jch subscribed.Dec 4 2015, 11:57 AM

convert tcp_timer_activate to sbintime

restore 40 line context

hiren added a reviewer: rrs.Oct 4 2016, 12:45 AM

hiren added a subscriber: transport.

@lstewart is this worth updating or should I just abandon?

Herald added a reviewer: transport. · View Herald TranscriptMay 3 2018, 3:55 AM

kmacy abandoned this revision.May 7 2018, 8:00 AM

Revision Contents
Changeset List

Path

Size

sys/

amd64/

include/

clock.h

2 line(s)

netinet/

93 line(s)

11 line(s)

68 line(s)

28 line(s)

10 line(s)

5 line(s)

41 line(s)

2 line(s)

30 line(s)

22 line(s)

2 line(s)

sys/

callout.h

2 line(s)

x86/

tsc.c

31 line(s)

Diff 10757

View Options

sys/amd64/include/clock.h

View Options

sys/netinet/tcp_input.c

View Options

sys/netinet/tcp_output.c

View Options

sys/netinet/tcp_seq.h

View Options

sys/netinet/tcp_subr.c

View Options

sys/netinet/tcp_syncache.c

View Options

sys/netinet/tcp_timer.h

View Options

sys/netinet/tcp_timer.c

View Options

sys/netinet/tcp_timewait.c

View Options

sys/netinet/tcp_usrreq.c

View Options

sys/netinet/tcp_var.h

View Options

sys/netinet/toecore.c

View Options

sys/sys/callout.h

View Options

convert tcp timestamps to scaled sbintimeAbandonedPublicActions

Details

Diff Detail

Event Timeline

Revision ContentsChangeset List

Diff 10757

sys/amd64/include/clock.h

sys/netinet/tcp_input.c

sys/netinet/tcp_output.c

sys/netinet/tcp_seq.h

sys/netinet/tcp_subr.c

sys/netinet/tcp_syncache.c

sys/netinet/tcp_timer.h

sys/netinet/tcp_timer.c

sys/netinet/tcp_timewait.c

sys/netinet/tcp_usrreq.c

sys/netinet/tcp_var.h

sys/netinet/toecore.c

sys/sys/callout.h

sys/x86/x86/tsc.c

convert tcp timestamps to scaled sbintime
AbandonedPublic
Actions

Revision Contents
Changeset List