HackerReposA FIELD GUIDE TO OPEN SOURCE
ProSponsor the shelf♧ 0
← Back to top all-time
vrv
linux-microsecondrto
Systems & Infrastructure2011–2013
vrv / linux-microsecondrto

linux-microsecondrto

Linux patches to support microsecond granularity RTOs in datacenters.

Systems & InfrastructureHardware & Embedded
Explore on GitHubRead Hacker News discussions
3Distinct people
4Mentions
0Explicit recommenders
16GitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Linux patches to support microsecond granularity RTOs in datacenters.

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 6:01:08 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by month4 dated mentions

Observed mentions: 2011-06-06 18:04:57 UTC to 2013-08-06 06:46:23 UTC.

012011-06-01 00:00:00 UTC to 2011-07-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 commentsJun 20112011-07-01 00:00:00 UTC to 2011-08-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2011-08-01 00:00:00 UTC to 2011-09-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2011-09-01 00:00:00 UTC to 2011-10-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2011-10-01 00:00:00 UTC to 2011-11-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2011-11-01 00:00:00 UTC to 2011-12-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2011-12-01 00:00:00 UTC to 2012-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2012-01-01 00:00:00 UTC to 2012-02-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2012-02-01 00:00:00 UTC to 2012-03-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2012-03-01 00:00:00 UTC to 2012-04-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2012-04-01 00:00:00 UTC to 2012-05-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2012-05-01 00:00:00 UTC to 2012-06-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2012-06-01 00:00:00 UTC to 2012-07-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2012-07-01 00:00:00 UTC to 2012-08-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 commentsJul 20122012-08-01 00:00:00 UTC to 2012-09-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2012-09-01 00:00:00 UTC to 2012-10-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2012-10-01 00:00:00 UTC to 2012-11-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2012-11-01 00:00:00 UTC to 2012-12-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2012-12-01 00:00:00 UTC to 2013-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2013-01-01 00:00:00 UTC to 2013-02-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2013-02-01 00:00:00 UTC to 2013-03-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2013-03-01 00:00:00 UTC to 2013-04-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2013-04-01 00:00:00 UTC to 2013-05-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2013-05-01 00:00:00 UTC to 2013-06-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2013-06-01 00:00:00 UTC to 2013-07-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2013-07-01 00:00:00 UTC to 2013-08-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2013-08-01 00:00:00 UTC to 2013-09-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 commentsAug 2013

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
Jun 20112011-06-01 00:00:00 UTC2011-07-01 00:00:00 UTC101
Jul 20112011-07-01 00:00:00 UTC2011-08-01 00:00:00 UTC000
Aug 20112011-08-01 00:00:00 UTC2011-09-01 00:00:00 UTC000
Sep 20112011-09-01 00:00:00 UTC2011-10-01 00:00:00 UTC000
Oct 20112011-10-01 00:00:00 UTC2011-11-01 00:00:00 UTC000
Nov 20112011-11-01 00:00:00 UTC2011-12-01 00:00:00 UTC000
Dec 20112011-12-01 00:00:00 UTC2012-01-01 00:00:00 UTC000
Jan 20122012-01-01 00:00:00 UTC2012-02-01 00:00:00 UTC101
Feb 20122012-02-01 00:00:00 UTC2012-03-01 00:00:00 UTC000
Mar 20122012-03-01 00:00:00 UTC2012-04-01 00:00:00 UTC000
Apr 20122012-04-01 00:00:00 UTC2012-05-01 00:00:00 UTC000
May 20122012-05-01 00:00:00 UTC2012-06-01 00:00:00 UTC000
Jun 20122012-06-01 00:00:00 UTC2012-07-01 00:00:00 UTC000
Jul 20122012-07-01 00:00:00 UTC2012-08-01 00:00:00 UTC000
Aug 20122012-08-01 00:00:00 UTC2012-09-01 00:00:00 UTC000
Sep 20122012-09-01 00:00:00 UTC2012-10-01 00:00:00 UTC000
Oct 20122012-10-01 00:00:00 UTC2012-11-01 00:00:00 UTC000
Nov 20122012-11-01 00:00:00 UTC2012-12-01 00:00:00 UTC000
Dec 20122012-12-01 00:00:00 UTC2013-01-01 00:00:00 UTC101
Jan 20132013-01-01 00:00:00 UTC2013-02-01 00:00:00 UTC000
Feb 20132013-02-01 00:00:00 UTC2013-03-01 00:00:00 UTC000
Mar 20132013-03-01 00:00:00 UTC2013-04-01 00:00:00 UTC000
Apr 20132013-04-01 00:00:00 UTC2013-05-01 00:00:00 UTC000
May 20132013-05-01 00:00:00 UTC2013-06-01 00:00:00 UTC000
Jun 20132013-06-01 00:00:00 UTC2013-07-01 00:00:00 UTC000
Jul 20132013-07-01 00:00:00 UTC2013-08-01 00:00:00 UTC000
Aug 20132013-08-01 00:00:00 UTC2013-09-01 00:00:00 UTC101

What Hacker News says

1 sources
vrv·Jun 6, 2011
This work is really cool and is attacking an important problem in a lot of datacenter networks. It's also great that they've released the source code too. As someone who's worked on this problem, I encourage those interested in reading up more about this. Here are a few papers on the problem in chronological order: 1. Original paper briefly talking about the "incast" TCP problem in storage environments: http://portal.acm.org/citation.cfm?id=1049998 2. Our follow up work on that problem from a few years back: Measurement paper ( http://portal.acm.org/citation.cfm?id=1364825 ) and our initial solution ( http://portal.acm.org/citation.cfm?id=1592604 ) with a microsecond retransmission Linux patch here: https://github.com/vrv/linux-microsecondrto 3. Another paper talking about Incast in Datacenter environments, focusing on a different for
Read the rest
m of the workload: http://portal.acm.org/citation.cfm?id=1592693 4. RAMCloud - a project that briefly talks about the need for low-latency transports: http://www.stanford.edu/~ouster/cgi-bin/papers/ramcloud.pdf 5. ICTCP - paper from last year that tries to solve the Incast problem using receiver advertised window algorithms: http://conferences.sigcomm.org/co-next/2010/CoNEXT_papers/13... DCTCP tries to go beyond solving the Incast problem and focuses on trying to control buffer occupancy in datacenter environments that contain both long flows and bursty flows. I think these papers all assume lossy link layers (Ethernet), but there are standards and other technologies (Datacenter Ethernet, Myrinet, Infiniband) that aim for lossless link layers to make the transport problem easier, but come with various other drawbacks today (cost, compatibility, etc.). In the meantime, I hope DCTCP or the microsecond TCP patch prove useful in solving some of these problems.
In DCTCP: TCP optimized for lower latency in Data Centers

MAKE YOURSELF AT HOME

A few shortcuts

/
Search the collection
?
Open this guide
Esc
Close dialogs and navigation

Your saved repositories and interests stay in this browser.