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From: Dave Taht <dave.taht@gmail.com>
To: bloat <bloat@lists.bufferbloat.net>
Subject: [Bloat] low latency workshop
Date: Wed, 19 Jun 2013 14:27:00 -0700	[thread overview]
Message-ID: <CAA93jw5QCEbCAxvb3DG=H6TJFU6P5SSicKQuTkKo4Fi0uLvWWA@mail.gmail.com> (raw)

I was trying to find the isoc/rite low latency workshop info via
google today and stumbled across a competing event in london  and a
whole website dedicated to the latency issues in the trading industry.

This talk

http://low-latency.com/audio/london-low-latency-summit-2013-workshop-low-latency-application-engineering

had slide 18 showing the enormous improvement in from-userspace
timestamp fetching behavior in linux - from 637ns for CLOCK_REALTIME
in 2.6.27, to 35ns in linux 3.5.4...

Based on some old scars I was leery of using timestamping in userspace
for some tasks. No longer.

There are also some boards that look useful for analyzing hard
networking stuff in detail mentioned.

-- 
Dave Täht

Fixing bufferbloat with cerowrt: http://www.teklibre.com/cerowrt/subscribe.html

             reply	other threads:[~2013-06-19 21:27 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-06-19 21:27 Dave Taht [this message]
2013-06-20  8:58 ` Matthew Ford

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