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| author | Kévin Le Gouguec <kevin.legouguec@gmail.com> | 2018-06-07 18:25:23 +0200 |
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| committer | Kévin Le Gouguec <kevin.legouguec@gmail.com> | 2018-06-07 18:25:42 +0200 |
| commit | 01f75c314e19d0ab671acdc7a46f993653dde0d2 (patch) | |
| tree | ad81d07a0ca2de6c2f61d54c7c6593f0bb94a260 /technical | |
| parent | bc858629703748e4ace70c9dd08128e55148f970 (diff) | |
| download | memory-leaks-01f75c314e19d0ab671acdc7a46f993653dde0d2.tar.xz | |
Start adding notes on linux.conf.au 2018
More to come.
Diffstat (limited to 'technical')
| -rw-r--r-- | technical/reviews/linux.conf.au-2018.md | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/technical/reviews/linux.conf.au-2018.md b/technical/reviews/linux.conf.au-2018.md new file mode 100644 index 0000000..3fa1d66 --- /dev/null +++ b/technical/reviews/linux.conf.au-2018.md @@ -0,0 +1,67 @@ +# linux.conf.au 2018 + +## Making Technology More Inclusive Through Papercraft and Sound + +By Andrew Huang. + +I like how the talk goes over a range of cross-domain topics: + +- high-level motivations + +Improving inclusiveness is necessary to make open-source actually +empower people; right now a very small subset of the population is +computer-savvy enough to take advantage of it. If the situation does +not improve, a handful of developers will hold a lot of power over +lots of alienated users, and lawmakers may resort to "preposterous" +solutions to attempt to regain control, e.g. license bonds for +software developments. + +- Kickstarter campaign management +- design choices & rationale + - "China-ready" + - "patience of a child" constraint +- gory hardware details +- the end result + +## QUIC: Replacing TCP for the Web + +By Jana Iyengar. + +Starts by introducing impressive application performance improvements, +although where were those measured? E.g. rural areas? + +Advantage that can already be inferred from the layer view: QUIC needs +fewer handshakes than TCP+TLS. + +Achieves 0-RTT when the server's cryptographic credentials are known. + +Supports "stream multiplexing": the upper layer (e.g. HTTP) can +transfer multiple objects independently in a single connection. +Losing part of one object does not block the others: retransmission is +managed at the stream level, not at the connection level. + +On top of UDP: allows userspace (Chrome) implementation. + +> If you think of layers as a set of functions, things that you want +> done, UDP is not a transport protocol. + +I.e. UDP does not provide reliability, same-order delivery… + +Jana was "in the SCTP bandwagon". + +They actually have *better performance improvements* for *bigger +latencies*? Nice. + +> § QUIC improvements by country + +👏 + +(Of course the end goal is probably to make sure regions with poor +connections do not miss out on the adfest; still, these remain welcome +technical improvements) + +Transport headers are encrypted to prevent "middlebox ossification". +They left a *single* byte unencrypted (the flags byte): this allowed +middleboxes to observe that it kinda had the same value on most +connections, assume that this was a "nominal" value, and block traffic +when this value differed. |
